From aa38e5c1f48e31213ee349aa5cd6f06c85bda70d Mon Sep 17 00:00:00 2001
From: android <android@lingyun.com>
Date: Tue, 25 Jun 2024 21:49:39 +0800
Subject: [PATCH] Add GD32F103RCT6 ADC converter board SDK source code
---
mcu_sdk/gd32f103/rk_eFire/Board/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c | 7440 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 7,440 insertions(+), 0 deletions(-)
diff --git a/mcu_sdk/gd32f103/rk_eFire/Board/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c b/mcu_sdk/gd32f103/rk_eFire/Board/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
new file mode 100644
index 0000000..65f08bd
--- /dev/null
+++ b/mcu_sdk/gd32f103/rk_eFire/Board/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
@@ -0,0 +1,7440 @@
+/**
+ ******************************************************************************
+ * @file stm32f1xx_hal_i2c.c
+ * @author MCD Application Team
+ * @brief I2C HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Inter Integrated Circuit (I2C) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral State, Mode and Error functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The I2C HAL driver can be used as follows:
+
+ (#) Declare a I2C_HandleTypeDef handle structure, for example:
+ I2C_HandleTypeDef hi2c;
+
+ (#)Initialize the I2C low level resources by implementing the @ref HAL_I2C_MspInit() API:
+ (##) Enable the I2Cx interface clock
+ (##) I2C pins configuration
+ (+++) Enable the clock for the I2C GPIOs
+ (+++) Configure I2C pins as alternate function open-drain
+ (##) NVIC configuration if you need to use interrupt process
+ (+++) Configure the I2Cx interrupt priority
+ (+++) Enable the NVIC I2C IRQ Channel
+ (##) DMA Configuration if you need to use DMA process
+ (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive channel
+ (+++) Enable the DMAx interface clock using
+ (+++) Configure the DMA handle parameters
+ (+++) Configure the DMA Tx or Rx channel
+ (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on
+ the DMA Tx or Rx channel
+
+ (#) Configure the Communication Speed, Duty cycle, Addressing mode, Own Address1,
+ Dual Addressing mode, Own Address2, General call and Nostretch mode in the hi2c Init structure.
+
+ (#) Initialize the I2C registers by calling the @ref HAL_I2C_Init(), configures also the low level Hardware
+ (GPIO, CLOCK, NVIC...etc) by calling the customized @ref HAL_I2C_MspInit() API.
+
+ (#) To check if target device is ready for communication, use the function @ref HAL_I2C_IsDeviceReady()
+
+ (#) For I2C IO and IO MEM operations, three operation modes are available within this driver :
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Transmit in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Transmit()
+ (+) Receive in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Receive()
+ (+) Transmit in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Transmit()
+ (+) Receive in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Receive()
+
+ *** Polling mode IO MEM operation ***
+ =====================================
+ [..]
+ (+) Write an amount of data in blocking mode to a specific memory address using @ref HAL_I2C_Mem_Write()
+ (+) Read an amount of data in blocking mode from a specific memory address using @ref HAL_I2C_Mem_Read()
+
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Transmit in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Transmit_IT()
+ (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback()
+ (+) Receive in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Receive_IT()
+ (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback()
+ (+) Transmit in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Transmit_IT()
+ (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback()
+ (+) Receive in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Receive_IT()
+ (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+ (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT()
+ (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback()
+
+ *** Interrupt mode or DMA mode IO sequential operation ***
+ ==========================================================
+ [..]
+ (@) These interfaces allow to manage a sequential transfer with a repeated start condition
+ when a direction change during transfer
+ [..]
+ (+) A specific option field manage the different steps of a sequential transfer
+ (+) Option field values are defined through @ref I2C_XferOptions_definition and are listed below:
+ (++) I2C_FIRST_AND_LAST_FRAME: No sequential usage, functionnal is same as associated interfaces in no sequential mode
+ (++) I2C_FIRST_FRAME: Sequential usage, this option allow to manage a sequence with start condition, address
+ and data to transfer without a final stop condition
+ (++) I2C_FIRST_AND_NEXT_FRAME: Sequential usage (Master only), this option allow to manage a sequence with start condition, address
+ and data to transfer without a final stop condition, an then permit a call the same master sequential interface
+ several times (like @ref HAL_I2C_Master_Seq_Transmit_IT() then @ref HAL_I2C_Master_Seq_Transmit_IT()
+ or @ref HAL_I2C_Master_Seq_Transmit_DMA() then @ref HAL_I2C_Master_Seq_Transmit_DMA())
+ (++) I2C_NEXT_FRAME: Sequential usage, this option allow to manage a sequence with a restart condition, address
+ and with new data to transfer if the direction change or manage only the new data to transfer
+ if no direction change and without a final stop condition in both cases
+ (++) I2C_LAST_FRAME: Sequential usage, this option allow to manage a sequance with a restart condition, address
+ and with new data to transfer if the direction change or manage only the new data to transfer
+ if no direction change and with a final stop condition in both cases
+ (++) I2C_LAST_FRAME_NO_STOP: Sequential usage (Master only), this option allow to manage a restart condition after several call of the same master sequential
+ interface several times (link with option I2C_FIRST_AND_NEXT_FRAME).
+ Usage can, transfer several bytes one by one using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME)
+ or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME)
+ or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME)
+ or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME).
+ Then usage of this option I2C_LAST_FRAME_NO_STOP at the last Transmit or Receive sequence permit to call the oposite interface Receive or Transmit
+ without stopping the communication and so generate a restart condition.
+ (++) I2C_OTHER_FRAME: Sequential usage (Master only), this option allow to manage a restart condition after each call of the same master sequential
+ interface.
+ Usage can, transfer several bytes one by one with a restart with slave address between each bytes using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME)
+ or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME)
+ or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME)
+ or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME).
+ Then usage of this option I2C_OTHER_AND_LAST_FRAME at the last frame to help automatic generation of STOP condition.
+
+ (+) Differents sequential I2C interfaces are listed below:
+ (++) Sequential transmit in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Transmit_IT()
+ or using @ref HAL_I2C_Master_Seq_Transmit_DMA()
+ (+++) At transmission end of current frame transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback()
+ (++) Sequential receive in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Receive_IT()
+ or using @ref HAL_I2C_Master_Seq_Receive_DMA()
+ (+++) At reception end of current frame transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback()
+ (++) Abort a master IT or DMA I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT()
+ (+++) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback()
+ (++) Enable/disable the Address listen mode in slave I2C mode using @ref HAL_I2C_EnableListen_IT() @ref HAL_I2C_DisableListen_IT()
+ (+++) When address slave I2C match, @ref HAL_I2C_AddrCallback() is executed and user can
+ add his own code to check the Address Match Code and the transmission direction request by master (Write/Read).
+ (+++) At Listen mode end @ref HAL_I2C_ListenCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ListenCpltCallback()
+ (++) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Transmit_IT()
+ or using @ref HAL_I2C_Slave_Seq_Transmit_DMA()
+ (+++) At transmission end of current frame transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback()
+ (++) Sequential receive in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Receive_IT()
+ or using @ref HAL_I2C_Slave_Seq_Receive_DMA()
+ (+++) At reception end of current frame transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback()
+ (++) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+
+ *** Interrupt mode IO MEM operation ***
+ =======================================
+ [..]
+ (+) Write an amount of data in non-blocking mode with Interrupt to a specific memory address using
+ @ref HAL_I2C_Mem_Write_IT()
+ (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback()
+ (+) Read an amount of data in non-blocking mode with Interrupt from a specific memory address using
+ @ref HAL_I2C_Mem_Read_IT()
+ (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+
+ *** DMA mode IO operation ***
+ ==============================
+ [..]
+ (+) Transmit in master mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Master_Transmit_DMA()
+ (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback()
+ (+) Receive in master mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Master_Receive_DMA()
+ (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback()
+ (+) Transmit in slave mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Slave_Transmit_DMA()
+ (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback()
+ (+) Receive in slave mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Slave_Receive_DMA()
+ (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+ (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT()
+ (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback()
+
+ *** DMA mode IO MEM operation ***
+ =================================
+ [..]
+ (+) Write an amount of data in non-blocking mode with DMA to a specific memory address using
+ @ref HAL_I2C_Mem_Write_DMA()
+ (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback()
+ (+) Read an amount of data in non-blocking mode with DMA from a specific memory address using
+ @ref HAL_I2C_Mem_Read_DMA()
+ (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+
+
+ *** I2C HAL driver macros list ***
+ ==================================
+ [..]
+ Below the list of most used macros in I2C HAL driver.
+
+ (+) @ref __HAL_I2C_ENABLE: Enable the I2C peripheral
+ (+) @ref __HAL_I2C_DISABLE: Disable the I2C peripheral
+ (+) @ref __HAL_I2C_GET_FLAG: Checks whether the specified I2C flag is set or not
+ (+) @ref __HAL_I2C_CLEAR_FLAG: Clear the specified I2C pending flag
+ (+) @ref __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt
+ (+) @ref __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt
+
+ *** Callback registration ***
+ =============================================
+ [..]
+ The compilation flag USE_HAL_I2C_REGISTER_CALLBACKS when set to 1
+ allows the user to configure dynamically the driver callbacks.
+ Use Functions @ref HAL_I2C_RegisterCallback() or @ref HAL_I2C_RegisterAddrCallback()
+ to register an interrupt callback.
+ [..]
+ Function @ref HAL_I2C_RegisterCallback() allows to register following callbacks:
+ (+) MasterTxCpltCallback : callback for Master transmission end of transfer.
+ (+) MasterRxCpltCallback : callback for Master reception end of transfer.
+ (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer.
+ (+) SlaveRxCpltCallback : callback for Slave reception end of transfer.
+ (+) ListenCpltCallback : callback for end of listen mode.
+ (+) MemTxCpltCallback : callback for Memory transmission end of transfer.
+ (+) MemRxCpltCallback : callback for Memory reception end of transfer.
+ (+) ErrorCallback : callback for error detection.
+ (+) AbortCpltCallback : callback for abort completion process.
+ (+) MspInitCallback : callback for Msp Init.
+ (+) MspDeInitCallback : callback for Msp DeInit.
+ This function takes as parameters the HAL peripheral handle, the Callback ID
+ and a pointer to the user callback function.
+ [..]
+ For specific callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_RegisterAddrCallback().
+ [..]
+ Use function @ref HAL_I2C_UnRegisterCallback to reset a callback to the default
+ weak function.
+ @ref HAL_I2C_UnRegisterCallback takes as parameters the HAL peripheral handle,
+ and the Callback ID.
+ This function allows to reset following callbacks:
+ (+) MasterTxCpltCallback : callback for Master transmission end of transfer.
+ (+) MasterRxCpltCallback : callback for Master reception end of transfer.
+ (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer.
+ (+) SlaveRxCpltCallback : callback for Slave reception end of transfer.
+ (+) ListenCpltCallback : callback for end of listen mode.
+ (+) MemTxCpltCallback : callback for Memory transmission end of transfer.
+ (+) MemRxCpltCallback : callback for Memory reception end of transfer.
+ (+) ErrorCallback : callback for error detection.
+ (+) AbortCpltCallback : callback for abort completion process.
+ (+) MspInitCallback : callback for Msp Init.
+ (+) MspDeInitCallback : callback for Msp DeInit.
+ [..]
+ For callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_UnRegisterAddrCallback().
+ [..]
+ By default, after the @ref HAL_I2C_Init() and when the state is @ref HAL_I2C_STATE_RESET
+ all callbacks are set to the corresponding weak functions:
+ examples @ref HAL_I2C_MasterTxCpltCallback(), @ref HAL_I2C_MasterRxCpltCallback().
+ Exception done for MspInit and MspDeInit functions that are
+ reset to the legacy weak functions in the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit() only when
+ these callbacks are null (not registered beforehand).
+ If MspInit or MspDeInit are not null, the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit()
+ keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state.
+ [..]
+ Callbacks can be registered/unregistered in @ref HAL_I2C_STATE_READY state only.
+ Exception done MspInit/MspDeInit functions that can be registered/unregistered
+ in @ref HAL_I2C_STATE_READY or @ref HAL_I2C_STATE_RESET state,
+ thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
+ Then, the user first registers the MspInit/MspDeInit user callbacks
+ using @ref HAL_I2C_RegisterCallback() before calling @ref HAL_I2C_DeInit()
+ or @ref HAL_I2C_Init() function.
+ [..]
+ When the compilation flag USE_HAL_I2C_REGISTER_CALLBACKS is set to 0 or
+ not defined, the callback registration feature is not available and all callbacks
+ are set to the corresponding weak functions.
+
+
+ *** I2C Workarounds linked to Silicon Limitation ***
+ ====================================================
+ [..]
+ Below the list of all silicon limitations implemented for HAL on STM32F1xx product.
+ (@) See ErrataSheet to know full silicon limitation list of your product.
+
+ (+) Workarounds Implemented inside I2C HAL Driver
+ (++) Wrong data read into data register (Polling and Interrupt mode)
+ (++) Start cannot be generated after a misplaced Stop
+ (++) Some software events must be managed before the current byte is being transferred:
+ Workaround: Use DMA in general, except when the Master is receiving a single byte.
+ For Interupt mode, I2C should have the highest priority in the application.
+ (++) Mismatch on the "Setup time for a repeated Start condition" timing parameter:
+ Workaround: Reduce the frequency down to 88 kHz or use the I2C Fast-mode if
+ supported by the slave.
+ (++) Data valid time (tVD;DAT) violated without the OVR flag being set:
+ Workaround: If the slave device allows it, use the clock stretching mechanism
+ by programming NoStretchMode = I2C_NOSTRETCH_DISABLE in @ref HAL_I2C_Init.
+
+ [..]
+ (@) You can refer to the I2C HAL driver header file for more useful macros
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup I2C I2C
+ * @brief I2C HAL module driver
+ * @{
+ */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup I2C_Private_Define
+ * @{
+ */
+#define I2C_TIMEOUT_FLAG 35U /*!< Timeout 35 ms */
+#define I2C_TIMEOUT_BUSY_FLAG 25U /*!< Timeout 25 ms */
+#define I2C_TIMEOUT_STOP_FLAG 5U /*!< Timeout 5 ms */
+#define I2C_NO_OPTION_FRAME 0xFFFF0000U /*!< XferOptions default value */
+
+/* Private define for @ref PreviousState usage */
+#define I2C_STATE_MSK ((uint32_t)((uint32_t)((uint32_t)HAL_I2C_STATE_BUSY_TX | (uint32_t)HAL_I2C_STATE_BUSY_RX) & (uint32_t)(~((uint32_t)HAL_I2C_STATE_READY)))) /*!< Mask State define, keep only RX and TX bits */
+#define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE)) /*!< Default Value */
+#define I2C_STATE_MASTER_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_MASTER_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */
+
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+
+/** @defgroup I2C_Private_Functions I2C Private Functions
+ * @{
+ */
+/* Private functions to handle DMA transfer */
+static void I2C_DMAXferCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAError(DMA_HandleTypeDef *hdma);
+static void I2C_DMAAbort(DMA_HandleTypeDef *hdma);
+
+static void I2C_ITError(I2C_HandleTypeDef *hi2c);
+
+static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart);
+
+/* Private functions to handle flags during polling transfer */
+static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnTXEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnBTFFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnSTOPRequestThroughIT(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c);
+
+/* Private functions for I2C transfer IRQ handler */
+static void I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c);
+static void I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c);
+static void I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c);
+static void I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c);
+static void I2C_Master_SB(I2C_HandleTypeDef *hi2c);
+static void I2C_Master_ADD10(I2C_HandleTypeDef *hi2c);
+static void I2C_Master_ADDR(I2C_HandleTypeDef *hi2c);
+
+static void I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c);
+static void I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c);
+static void I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c);
+static void I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c);
+static void I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c, uint32_t IT2Flags);
+static void I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c);
+static void I2C_Slave_AF(I2C_HandleTypeDef *hi2c);
+
+static void I2C_MemoryTransmit_TXE_BTF(I2C_HandleTypeDef *hi2c);
+
+/* Private function to Convert Specific options */
+static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup I2C_Exported_Functions I2C Exported Functions
+ * @{
+ */
+
+/** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and de-initialization functions #####
+ ===============================================================================
+ [..] This subsection provides a set of functions allowing to initialize and
+ deinitialize the I2Cx peripheral:
+
+ (+) User must Implement HAL_I2C_MspInit() function in which he configures
+ all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC).
+
+ (+) Call the function HAL_I2C_Init() to configure the selected device with
+ the selected configuration:
+ (++) Communication Speed
+ (++) Duty cycle
+ (++) Addressing mode
+ (++) Own Address 1
+ (++) Dual Addressing mode
+ (++) Own Address 2
+ (++) General call mode
+ (++) Nostretch mode
+
+ (+) Call the function HAL_I2C_DeInit() to restore the default configuration
+ of the selected I2Cx peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the I2C according to the specified parameters
+ * in the I2C_InitTypeDef and initialize the associated handle.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t freqrange;
+ uint32_t pclk1;
+
+ /* Check the I2C handle allocation */
+ if (hi2c == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_I2C_CLOCK_SPEED(hi2c->Init.ClockSpeed));
+ assert_param(IS_I2C_DUTY_CYCLE(hi2c->Init.DutyCycle));
+ assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1));
+ assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode));
+ assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode));
+ assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2));
+ assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode));
+ assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode));
+
+ if (hi2c->State == HAL_I2C_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hi2c->Lock = HAL_UNLOCKED;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ /* Init the I2C Callback settings */
+ hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */
+ hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */
+ hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */
+ hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */
+ hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */
+ hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */
+ hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */
+ hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */
+ hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
+ hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */
+
+ if (hi2c->MspInitCallback == NULL)
+ {
+ hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */
+ }
+
+ /* Init the low level hardware : GPIO, CLOCK, NVIC */
+ hi2c->MspInitCallback(hi2c);
+#else
+ /* Init the low level hardware : GPIO, CLOCK, NVIC */
+ HAL_I2C_MspInit(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /*Reset I2C*/
+ hi2c->Instance->CR1 |= I2C_CR1_SWRST;
+ hi2c->Instance->CR1 &= ~I2C_CR1_SWRST;
+
+ /* Get PCLK1 frequency */
+ pclk1 = HAL_RCC_GetPCLK1Freq();
+
+ /* Check the minimum allowed PCLK1 frequency */
+ if (I2C_MIN_PCLK_FREQ(pclk1, hi2c->Init.ClockSpeed) == 1U)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Calculate frequency range */
+ freqrange = I2C_FREQRANGE(pclk1);
+
+ /*---------------------------- I2Cx CR2 Configuration ----------------------*/
+ /* Configure I2Cx: Frequency range */
+ MODIFY_REG(hi2c->Instance->CR2, I2C_CR2_FREQ, freqrange);
+
+ /*---------------------------- I2Cx TRISE Configuration --------------------*/
+ /* Configure I2Cx: Rise Time */
+ MODIFY_REG(hi2c->Instance->TRISE, I2C_TRISE_TRISE, I2C_RISE_TIME(freqrange, hi2c->Init.ClockSpeed));
+
+ /*---------------------------- I2Cx CCR Configuration ----------------------*/
+ /* Configure I2Cx: Speed */
+ MODIFY_REG(hi2c->Instance->CCR, (I2C_CCR_FS | I2C_CCR_DUTY | I2C_CCR_CCR), I2C_SPEED(pclk1, hi2c->Init.ClockSpeed, hi2c->Init.DutyCycle));
+
+ /*---------------------------- I2Cx CR1 Configuration ----------------------*/
+ /* Configure I2Cx: Generalcall and NoStretch mode */
+ MODIFY_REG(hi2c->Instance->CR1, (I2C_CR1_ENGC | I2C_CR1_NOSTRETCH), (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode));
+
+ /*---------------------------- I2Cx OAR1 Configuration ---------------------*/
+ /* Configure I2Cx: Own Address1 and addressing mode */
+ MODIFY_REG(hi2c->Instance->OAR1, (I2C_OAR1_ADDMODE | I2C_OAR1_ADD8_9 | I2C_OAR1_ADD1_7 | I2C_OAR1_ADD0), (hi2c->Init.AddressingMode | hi2c->Init.OwnAddress1));
+
+ /*---------------------------- I2Cx OAR2 Configuration ---------------------*/
+ /* Configure I2Cx: Dual mode and Own Address2 */
+ MODIFY_REG(hi2c->Instance->OAR2, (I2C_OAR2_ENDUAL | I2C_OAR2_ADD2), (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2));
+
+ /* Enable the selected I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitialize the I2C peripheral.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the I2C handle allocation */
+ if (hi2c == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the I2C Peripheral Clock */
+ __HAL_I2C_DISABLE(hi2c);
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ if (hi2c->MspDeInitCallback == NULL)
+ {
+ hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */
+ }
+
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
+ hi2c->MspDeInitCallback(hi2c);
+#else
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
+ HAL_I2C_MspDeInit(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_RESET;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initialize the I2C MSP.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DeInitialize the I2C MSP.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MspDeInit could be implemented in the user file
+ */
+}
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+/**
+ * @brief Register a User I2C Callback
+ * To be used instead of the weak predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param CallbackID ID of the callback to be registered
+ * This parameter can be one of the following values:
+ * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID
+ * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID
+ * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID
+ * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID
+ * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID
+ * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID
+ * @param pCallback pointer to the Callback function
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if (pCallback == NULL)
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ return HAL_ERROR;
+ }
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MASTER_TX_COMPLETE_CB_ID :
+ hi2c->MasterTxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MASTER_RX_COMPLETE_CB_ID :
+ hi2c->MasterRxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID :
+ hi2c->SlaveTxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID :
+ hi2c->SlaveRxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_LISTEN_COMPLETE_CB_ID :
+ hi2c->ListenCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MEM_TX_COMPLETE_CB_ID :
+ hi2c->MemTxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MEM_RX_COMPLETE_CB_ID :
+ hi2c->MemRxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_ERROR_CB_ID :
+ hi2c->ErrorCallback = pCallback;
+ break;
+
+ case HAL_I2C_ABORT_CB_ID :
+ hi2c->AbortCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = pCallback;
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = pCallback;
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else if (HAL_I2C_STATE_RESET == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = pCallback;
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = pCallback;
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+/**
+ * @brief Unregister an I2C Callback
+ * I2C callback is redirected to the weak predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param CallbackID ID of the callback to be unregistered
+ * This parameter can be one of the following values:
+ * This parameter can be one of the following values:
+ * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID
+ * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID
+ * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID
+ * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID
+ * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID
+ * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MASTER_TX_COMPLETE_CB_ID :
+ hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */
+ break;
+
+ case HAL_I2C_MASTER_RX_COMPLETE_CB_ID :
+ hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */
+ break;
+
+ case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID :
+ hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */
+ break;
+
+ case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID :
+ hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */
+ break;
+
+ case HAL_I2C_LISTEN_COMPLETE_CB_ID :
+ hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */
+ break;
+
+ case HAL_I2C_MEM_TX_COMPLETE_CB_ID :
+ hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */
+ break;
+
+ case HAL_I2C_MEM_RX_COMPLETE_CB_ID :
+ hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */
+ break;
+
+ case HAL_I2C_ERROR_CB_ID :
+ hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */
+ break;
+
+ case HAL_I2C_ABORT_CB_ID :
+ hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
+ break;
+
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else if (HAL_I2C_STATE_RESET == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+/**
+ * @brief Register the Slave Address Match I2C Callback
+ * To be used instead of the weak HAL_I2C_AddrCallback() predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pCallback pointer to the Address Match Callback function
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if (pCallback == NULL)
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ return HAL_ERROR;
+ }
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ hi2c->AddrCallback = pCallback;
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+/**
+ * @brief UnRegister the Slave Address Match I2C Callback
+ * Info Ready I2C Callback is redirected to the weak HAL_I2C_AddrCallback() predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Exported_Functions_Group2 Input and Output operation functions
+ * @brief Data transfers functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the I2C data
+ transfers.
+
+ (#) There are two modes of transfer:
+ (++) Blocking mode : The communication is performed in the polling mode.
+ The status of all data processing is returned by the same function
+ after finishing transfer.
+ (++) No-Blocking mode : The communication is performed using Interrupts
+ or DMA. These functions return the status of the transfer startup.
+ The end of the data processing will be indicated through the
+ dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+
+ (#) Blocking mode functions are :
+ (++) HAL_I2C_Master_Transmit()
+ (++) HAL_I2C_Master_Receive()
+ (++) HAL_I2C_Slave_Transmit()
+ (++) HAL_I2C_Slave_Receive()
+ (++) HAL_I2C_Mem_Write()
+ (++) HAL_I2C_Mem_Read()
+ (++) HAL_I2C_IsDeviceReady()
+
+ (#) No-Blocking mode functions with Interrupt are :
+ (++) HAL_I2C_Master_Transmit_IT()
+ (++) HAL_I2C_Master_Receive_IT()
+ (++) HAL_I2C_Slave_Transmit_IT()
+ (++) HAL_I2C_Slave_Receive_IT()
+ (++) HAL_I2C_Mem_Write_IT()
+ (++) HAL_I2C_Mem_Read_IT()
+ (++) HAL_I2C_Master_Seq_Transmit_IT()
+ (++) HAL_I2C_Master_Seq_Receive_IT()
+ (++) HAL_I2C_Slave_Seq_Transmit_IT()
+ (++) HAL_I2C_Slave_Seq_Receive_IT()
+ (++) HAL_I2C_EnableListen_IT()
+ (++) HAL_I2C_DisableListen_IT()
+ (++) HAL_I2C_Master_Abort_IT()
+
+ (#) No-Blocking mode functions with DMA are :
+ (++) HAL_I2C_Master_Transmit_DMA()
+ (++) HAL_I2C_Master_Receive_DMA()
+ (++) HAL_I2C_Slave_Transmit_DMA()
+ (++) HAL_I2C_Slave_Receive_DMA()
+ (++) HAL_I2C_Mem_Write_DMA()
+ (++) HAL_I2C_Mem_Read_DMA()
+ (++) HAL_I2C_Master_Seq_Transmit_DMA()
+ (++) HAL_I2C_Master_Seq_Receive_DMA()
+ (++) HAL_I2C_Slave_Seq_Transmit_DMA()
+ (++) HAL_I2C_Slave_Seq_Receive_DMA()
+
+ (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
+ (++) HAL_I2C_MasterTxCpltCallback()
+ (++) HAL_I2C_MasterRxCpltCallback()
+ (++) HAL_I2C_SlaveTxCpltCallback()
+ (++) HAL_I2C_SlaveRxCpltCallback()
+ (++) HAL_I2C_MemTxCpltCallback()
+ (++) HAL_I2C_MemRxCpltCallback()
+ (++) HAL_I2C_AddrCallback()
+ (++) HAL_I2C_ListenCpltCallback()
+ (++) HAL_I2C_ErrorCallback()
+ (++) HAL_I2C_AbortCpltCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmits in master mode an amount of data in blocking mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Send Slave Address */
+ if (I2C_MasterRequestWrite(hi2c, DevAddress, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ while (hi2c->XferSize > 0U)
+ {
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+
+ if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+ }
+
+ /* Wait until BTF flag is set */
+ if (I2C_WaitOnBTFFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+ }
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receives in master mode an amount of data in blocking mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ __IO uint32_t count = 0U;
+
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Send Slave Address */
+ if (I2C_MasterRequestRead(hi2c, DevAddress, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferSize == 0U)
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ else if (hi2c->XferSize == 1U)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Re-enable IRQs */
+ __enable_irq();
+ }
+ else if (hi2c->XferSize == 2U)
+ {
+ /* Enable Pos */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Re-enable IRQs */
+ __enable_irq();
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ while (hi2c->XferSize > 0U)
+ {
+ if (hi2c->XferSize <= 3U)
+ {
+ /* One byte */
+ if (hi2c->XferSize == 1U)
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ /* Two bytes */
+ else if (hi2c->XferSize == 2U)
+ {
+ /* Wait until BTF flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Re-enable IRQs */
+ __enable_irq();
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ /* 3 Last bytes */
+ else
+ {
+ /* Wait until BTF flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Wait until BTF flag is set */
+ count = I2C_TIMEOUT_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Re-enable IRQs */
+ __enable_irq();
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == RESET);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Re-enable IRQs */
+ __enable_irq();
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+ else
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmits in slave mode an amount of data in blocking mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* If 10bit addressing mode is selected */
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
+ {
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ while (hi2c->XferSize > 0U)
+ {
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ return HAL_ERROR;
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+
+ if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+ }
+ }
+
+ /* Wait until AF flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Disable Address Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in blocking mode
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == (uint16_t)0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ while (hi2c->XferSize > 0U)
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ return HAL_ERROR;
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U))
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+
+ /* Wait until STOP flag is set */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_STOPFLAG(hi2c);
+
+ /* Disable Address Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in master mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->Devaddress = DevAddress;
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->Devaddress = DevAddress;
+
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in slave mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in master mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->Devaddress = DevAddress;
+
+ if (hi2c->XferSize > 0U)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->Devaddress = DevAddress;
+
+ if (hi2c->XferSize > 0U)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in slave mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Write an amount of data in blocking mode to a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ while (hi2c->XferSize > 0U)
+ {
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+
+ /* Wait until BTF flag is set */
+ if (I2C_WaitOnBTFFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Read an amount of data in blocking mode from a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ __IO uint32_t count = 0U;
+
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferSize == 0U)
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ else if (hi2c->XferSize == 1U)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Re-enable IRQs */
+ __enable_irq();
+ }
+ else if (hi2c->XferSize == 2U)
+ {
+ /* Enable Pos */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Re-enable IRQs */
+ __enable_irq();
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ while (hi2c->XferSize > 0U)
+ {
+ if (hi2c->XferSize <= 3U)
+ {
+ /* One byte */
+ if (hi2c->XferSize == 1U)
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ /* Two bytes */
+ else if (hi2c->XferSize == 2U)
+ {
+ /* Wait until BTF flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Re-enable IRQs */
+ __enable_irq();
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ /* 3 Last bytes */
+ else
+ {
+ /* Wait until BTF flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3
+ software sequence must complete before the current byte end of transfer */
+ __disable_irq();
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Wait until BTF flag is set */
+ count = I2C_TIMEOUT_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Re-enable IRQs */
+ __enable_irq();
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == RESET);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Re-enable IRQs */
+ __enable_irq();
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+ else
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Write an amount of data in non-blocking mode with Interrupt to a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->Devaddress = DevAddress;
+ hi2c->Memaddress = MemAddress;
+ hi2c->MemaddSize = MemAddSize;
+ hi2c->EventCount = 0U;
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Read an amount of data in non-blocking mode with Interrupt from a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->Devaddress = DevAddress;
+ hi2c->Memaddress = MemAddress;
+ hi2c->MemaddSize = MemAddSize;
+ hi2c->EventCount = 0U;
+
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ if (hi2c->XferSize > 0U)
+ {
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+ }
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Write an amount of data in non-blocking mode with DMA to a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ __IO uint32_t count = 0U;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ if (hi2c->XferSize > 0U)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ /* Abort the ongoing DMA */
+ dmaxferstatus = HAL_DMA_Abort_IT(hi2c->hdmatx);
+
+ /* Prevent unused argument(s) compilation and MISRA warning */
+ UNUSED(dmaxferstatus);
+
+ /* Clear directly Complete callback as no XferAbortCallback is used to finalize Abort treatment */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->hdmatx->XferCpltCallback = NULL;
+ }
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->XferSize = 0U;
+ hi2c->XferCount = 0U;
+
+ /* Disable I2C peripheral to prevent dummy data in buffer */
+ __HAL_I2C_DISABLE(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_SIZE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Reads an amount of data in non-blocking mode with DMA from a specific memory address.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be read
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ /* Init tickstart for timeout management*/
+ uint32_t tickstart = HAL_GetTick();
+ __IO uint32_t count = 0U;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ if (hi2c->XferSize > 0U)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ /* Abort the ongoing DMA */
+ dmaxferstatus = HAL_DMA_Abort_IT(hi2c->hdmarx);
+
+ /* Prevent unused argument(s) compilation and MISRA warning */
+ UNUSED(dmaxferstatus);
+
+ /* Clear directly Complete callback as no XferAbortCallback is used to finalize Abort treatment */
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->hdmarx->XferCpltCallback = NULL;
+ }
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->XferSize = 0U;
+ hi2c->XferCount = 0U;
+
+ /* Disable I2C peripheral to prevent dummy data in buffer */
+ __HAL_I2C_DISABLE(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferSize == 1U)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ else
+ {
+ /* Enable Last DMA bit */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Checks if target device is ready for communication.
+ * @note This function is used with Memory devices
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param Trials Number of trials
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout)
+{
+ /* Get tick */
+ uint32_t tickstart = HAL_GetTick();
+ uint32_t I2C_Trials = 1U;
+ FlagStatus tmp1;
+ FlagStatus tmp2;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ do
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+
+ /* Wait until ADDR or AF flag are set */
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
+ tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+ while ((hi2c->State != HAL_I2C_STATE_TIMEOUT) && (tmp1 == RESET) && (tmp2 == RESET))
+ {
+ if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->State = HAL_I2C_STATE_TIMEOUT;
+ }
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
+ tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if the ADDR flag has been set */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Clear ADDR Flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Clear AF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ /* Increment Trials */
+ I2C_Trials++;
+ }
+ while (I2C_Trials < Trials);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with Interrupt.
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ __IO uint32_t Prev_State = 0x00U;
+ __IO uint32_t count = 0x00U;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Check Busy Flag only if FIRST call of Master interface */
+ if ((READ_BIT(hi2c->Instance->CR1, I2C_CR1_STOP) == I2C_CR1_STOP) || (XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME))
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->Devaddress = DevAddress;
+
+ Prev_State = hi2c->PreviousState;
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((Prev_State != I2C_STATE_MASTER_BUSY_TX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with DMA.
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ __IO uint32_t Prev_State = 0x00U;
+ __IO uint32_t count = 0x00U;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Check Busy Flag only if FIRST call of Master interface */
+ if ((READ_BIT(hi2c->Instance->CR1, I2C_CR1_STOP) == I2C_CR1_STOP) || (XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME))
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->Devaddress = DevAddress;
+
+ Prev_State = hi2c->PreviousState;
+
+ if (hi2c->XferSize > 0U)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((Prev_State != I2C_STATE_MASTER_BUSY_TX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* If XferOptions is not associated to a new frame, mean no start bit is request, enable directly the DMA request */
+ /* In other cases, DMA request is enabled after Slave address treatment in IRQHandler */
+ if ((XferOptions == I2C_NEXT_FRAME) || (XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP))
+ {
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+ }
+
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((Prev_State != I2C_STATE_MASTER_BUSY_TX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential receive in master I2C mode an amount of data in non-blocking mode with Interrupt
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ __IO uint32_t Prev_State = 0x00U;
+ __IO uint32_t count = 0U;
+ uint32_t enableIT = (I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Check Busy Flag only if FIRST call of Master interface */
+ if ((READ_BIT(hi2c->Instance->CR1, I2C_CR1_STOP) == I2C_CR1_STOP) || (XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME))
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->Devaddress = DevAddress;
+
+ Prev_State = hi2c->PreviousState;
+
+ if ((hi2c->XferCount == 2U) && ((XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP)))
+ {
+ if (Prev_State == I2C_STATE_MASTER_BUSY_RX)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Enable Pos */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ /* Remove Enabling of IT_BUF, mean RXNE treatment, treat the 2 bytes through BTF */
+ enableIT &= ~I2C_IT_BUF;
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable interrupts */
+ __HAL_I2C_ENABLE_IT(hi2c, enableIT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential receive in master mode an amount of data in non-blocking mode with DMA
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ __IO uint32_t Prev_State = 0x00U;
+ __IO uint32_t count = 0U;
+ uint32_t enableIT = (I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Check Busy Flag only if FIRST call of Master interface */
+ if ((READ_BIT(hi2c->Instance->CR1, I2C_CR1_STOP) == I2C_CR1_STOP) || (XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME))
+ {
+ /* Wait until BUSY flag is reset */
+ count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ /* Clear Last DMA bit */
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->Devaddress = DevAddress;
+
+ Prev_State = hi2c->PreviousState;
+
+ if (hi2c->XferSize > 0U)
+ {
+ if ((hi2c->XferCount == 2U) && ((XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP)))
+ {
+ if (Prev_State == I2C_STATE_MASTER_BUSY_RX)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Enable Pos */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ /* Enable Last DMA bit */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ if ((XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_OTHER_AND_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP))
+ {
+ /* Enable Last DMA bit */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+ }
+ }
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Update interrupt for only EVT and ERR */
+ enableIT = (I2C_IT_EVT | I2C_IT_ERR);
+ }
+ else
+ {
+ /* Update interrupt for only ERR */
+ enableIT = I2C_IT_ERR;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* If XferOptions is not associated to a new frame, mean no start bit is request, enable directly the DMA request */
+ /* In other cases, DMA request is enabled after Slave address treatment in IRQHandler */
+ if ((XferOptions == I2C_NEXT_FRAME) || (XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP))
+ {
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+ }
+
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, enableIT);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable interrupts */
+ __HAL_I2C_ENABLE_IT(hi2c, enableIT);
+ }
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in slave mode an amount of data in non-blocking mode with Interrupt
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in slave mode an amount of data in non-blocking mode with DMA
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */
+ /* and then toggle the HAL slave RX state to TX state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmarx != NULL)
+ {
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ }
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential receive in slave mode an amount of data in non-blocking mode with Interrupt
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential receive in slave mode an amount of data in non-blocking mode with DMA
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */
+ /* and then toggle the HAL slave RX state to TX state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmarx != NULL)
+ {
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ }
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Disable Pos */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Enable the Address listen mode with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+
+ /* Check if the I2C is already enabled */
+ if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
+ {
+ /* Enable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+ }
+
+ /* Enable Address Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Enable EVT and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Disable the Address listen mode with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of tmp to prevent undefined behavior of volatile usage */
+ uint32_t tmp;
+
+ /* Disable Address listen mode only if a transfer is not ongoing */
+ if (hi2c->State == HAL_I2C_STATE_LISTEN)
+ {
+ tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK;
+ hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode);
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Disable Address Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Disable EVT and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Abort a master I2C IT or DMA process communication with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(DevAddress);
+
+ /* Abort Master transfer during Receive or Transmit process */
+ if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET) && (CurrentMode == HAL_I2C_MODE_MASTER))
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_ABORT;
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->XferCount = 0U;
+
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Wrong usage of abort function */
+ /* This function should be used only in case of abort monitored by master device */
+ /* Or periphal is not in busy state, mean there is no active sequence to be abort */
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
+ * @{
+ */
+
+/**
+ * @brief This function handles I2C event interrupt request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t sr1itflags;
+ uint32_t sr2itflags = 0U;
+ uint32_t itsources = READ_REG(hi2c->Instance->CR2);
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+
+ /* Master or Memory mode selected */
+ if ((CurrentMode == HAL_I2C_MODE_MASTER) || (CurrentMode == HAL_I2C_MODE_MEM))
+ {
+ sr2itflags = READ_REG(hi2c->Instance->SR2);
+ sr1itflags = READ_REG(hi2c->Instance->SR1);
+
+ /* Exit IRQ event until Start Bit detected in case of Other frame requested */
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_SB) == RESET) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(CurrentXferOptions) == 1U))
+ {
+ return;
+ }
+
+ /* SB Set ----------------------------------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_SB) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ /* Convert OTHER_xxx XferOptions if any */
+ I2C_ConvertOtherXferOptions(hi2c);
+
+ I2C_Master_SB(hi2c);
+ }
+ /* ADD10 Set -------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ADD10) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ I2C_Master_ADD10(hi2c);
+ }
+ /* ADDR Set --------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ADDR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ I2C_Master_ADDR(hi2c);
+ }
+ /* I2C in mode Transmitter -----------------------------------------------*/
+ else if (I2C_CHECK_FLAG(sr2itflags, I2C_FLAG_TRA) != RESET)
+ {
+ /* Do not check buffer and BTF flag if a Xfer DMA is on going */
+ if (READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) != I2C_CR2_DMAEN)
+ {
+ /* TXE set and BTF reset -----------------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_TXE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET))
+ {
+ I2C_MasterTransmit_TXE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ if (CurrentMode == HAL_I2C_MODE_MASTER)
+ {
+ I2C_MasterTransmit_BTF(hi2c);
+ }
+ else /* HAL_I2C_MODE_MEM */
+ {
+ I2C_MemoryTransmit_TXE_BTF(hi2c);
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+ }
+ /* I2C in mode Receiver --------------------------------------------------*/
+ else
+ {
+ /* Do not check buffer and BTF flag if a Xfer DMA is on going */
+ if (READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) != I2C_CR2_DMAEN)
+ {
+ /* RXNE set and BTF reset -----------------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_RXNE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET))
+ {
+ I2C_MasterReceive_RXNE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ I2C_MasterReceive_BTF(hi2c);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+ }
+ }
+ /* Slave mode selected */
+ else
+ {
+ /* If an error is detected, read only SR1 register to prevent */
+ /* a clear of ADDR flags by reading SR2 after reading SR1 in Error treatment */
+ if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ sr1itflags = READ_REG(hi2c->Instance->SR1);
+ }
+ else
+ {
+ sr2itflags = READ_REG(hi2c->Instance->SR2);
+ sr1itflags = READ_REG(hi2c->Instance->SR1);
+ }
+
+ /* ADDR set --------------------------------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ADDR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ /* Now time to read SR2, this will clear ADDR flag automatically */
+ if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ sr2itflags = READ_REG(hi2c->Instance->SR2);
+ }
+ I2C_Slave_ADDR(hi2c, sr2itflags);
+ }
+ /* STOPF set --------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_STOPF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ I2C_Slave_STOPF(hi2c);
+ }
+ /* I2C in mode Transmitter -----------------------------------------------*/
+ else if ((CurrentState == HAL_I2C_STATE_BUSY_TX) || (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN))
+ {
+ /* TXE set and BTF reset -----------------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_TXE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET))
+ {
+ I2C_SlaveTransmit_TXE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ I2C_SlaveTransmit_BTF(hi2c);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+ /* I2C in mode Receiver --------------------------------------------------*/
+ else
+ {
+ /* RXNE set and BTF reset ----------------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_RXNE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET))
+ {
+ I2C_SlaveReceive_RXNE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET))
+ {
+ I2C_SlaveReceive_BTF(hi2c);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+ }
+}
+
+/**
+ * @brief This function handles I2C error interrupt request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ HAL_I2C_ModeTypeDef tmp1;
+ uint32_t tmp2;
+ HAL_I2C_StateTypeDef tmp3;
+ uint32_t tmp4;
+ uint32_t sr1itflags = READ_REG(hi2c->Instance->SR1);
+ uint32_t itsources = READ_REG(hi2c->Instance->CR2);
+ uint32_t error = HAL_I2C_ERROR_NONE;
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+
+ /* I2C Bus error interrupt occurred ----------------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BERR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET))
+ {
+ error |= HAL_I2C_ERROR_BERR;
+
+ /* Clear BERR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR);
+
+ /* Workaround: Start cannot be generated after a misplaced Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_SWRST);
+ }
+
+ /* I2C Arbitration Lost error interrupt occurred ---------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ARLO) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET))
+ {
+ error |= HAL_I2C_ERROR_ARLO;
+
+ /* Clear ARLO flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO);
+ }
+
+ /* I2C Acknowledge failure error interrupt occurred ------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_AF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET))
+ {
+ tmp1 = CurrentMode;
+ tmp2 = hi2c->XferCount;
+ tmp3 = hi2c->State;
+ tmp4 = hi2c->PreviousState;
+ if ((tmp1 == HAL_I2C_MODE_SLAVE) && (tmp2 == 0U) && \
+ ((tmp3 == HAL_I2C_STATE_BUSY_TX) || (tmp3 == HAL_I2C_STATE_BUSY_TX_LISTEN) || \
+ ((tmp3 == HAL_I2C_STATE_LISTEN) && (tmp4 == I2C_STATE_SLAVE_BUSY_TX))))
+ {
+ I2C_Slave_AF(hi2c);
+ }
+ else
+ {
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ error |= HAL_I2C_ERROR_AF;
+
+ /* Do not generate a STOP in case of Slave receive non acknowledge during transfer (mean not at the end of transfer) */
+ if ((CurrentMode == HAL_I2C_MODE_MASTER) || (CurrentMode == HAL_I2C_MODE_MEM))
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ }
+ }
+
+ /* I2C Over-Run/Under-Run interrupt occurred -------------------------------*/
+ if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_OVR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET))
+ {
+ error |= HAL_I2C_ERROR_OVR;
+ /* Clear OVR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR);
+ }
+
+ /* Call the Error Callback in case of Error detected -----------------------*/
+ if (error != HAL_I2C_ERROR_NONE)
+ {
+ hi2c->ErrorCode |= error;
+ I2C_ITError(hi2c);
+ }
+}
+
+/**
+ * @brief Master Tx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MasterTxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Master Rx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MasterRxCpltCallback could be implemented in the user file
+ */
+}
+
+/** @brief Slave Tx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_SlaveTxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Slave Rx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_SlaveRxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Slave Address Match callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param TransferDirection Master request Transfer Direction (Write/Read), value of @ref I2C_XferDirection_definition
+ * @param AddrMatchCode Address Match Code
+ * @retval None
+ */
+__weak void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+ UNUSED(TransferDirection);
+ UNUSED(AddrMatchCode);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_AddrCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Listen Complete callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_ListenCpltCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Memory Tx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MemTxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Memory Rx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MemRxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2C error callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_ErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2C abort callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_AbortCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions
+ * @brief Peripheral State, Mode and Error functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral State, Mode and Error functions #####
+ ===============================================================================
+ [..]
+ This subsection permit to get in run-time the status of the peripheral
+ and the data flow.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the I2C handle state.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL state
+ */
+HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c)
+{
+ /* Return I2C handle state */
+ return hi2c->State;
+}
+
+/**
+ * @brief Returns the I2C Master, Slave, Memory or no mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL mode
+ */
+HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->Mode;
+}
+
+/**
+ * @brief Return the I2C error code.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval I2C Error Code
+ */
+uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup I2C_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Handle TXE flag for Master
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ if ((hi2c->XferSize == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX))
+ {
+ /* Call TxCpltCallback() directly if no stop mode is set */
+ if ((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME))
+ {
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else /* Generate Stop condition then Call TxCpltCallback() */
+ {
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ }
+ else if ((CurrentState == HAL_I2C_STATE_BUSY_TX) || \
+ ((CurrentMode == HAL_I2C_MODE_MEM) && (CurrentState == HAL_I2C_STATE_BUSY_RX)))
+ {
+ if (hi2c->XferCount == 0U)
+ {
+ /* Disable BUF interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+ }
+ else
+ {
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ I2C_MemoryTransmit_TXE_BTF(hi2c);
+ }
+ else
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+}
+
+/**
+ * @brief Handle BTF flag for Master transmitter
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX)
+ {
+ if (hi2c->XferCount != 0U)
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+ else
+ {
+ /* Call TxCpltCallback() directly if no stop mode is set */
+ if ((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME))
+ {
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else /* Generate Stop condition then Call TxCpltCallback() */
+ {
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+}
+
+/**
+ * @brief Handle TXE and BTF flag for Memory transmitter
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_MemoryTransmit_TXE_BTF(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+
+ if (hi2c->EventCount == 0U)
+ {
+ /* If Memory address size is 8Bit */
+ if (hi2c->MemaddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress);
+
+ hi2c->EventCount += 2U;
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_MSB(hi2c->Memaddress);
+
+ hi2c->EventCount++;
+ }
+ }
+ else if (hi2c->EventCount == 1U)
+ {
+ /* Send LSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress);
+
+ hi2c->EventCount++;
+ }
+ else if (hi2c->EventCount == 2U)
+ {
+ if (CurrentState == HAL_I2C_STATE_BUSY_RX)
+ {
+ /* Generate Restart */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+ }
+ else if ((hi2c->XferCount > 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+ else if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX))
+ {
+ /* Generate Stop condition then Call TxCpltCallback() */
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+}
+
+/**
+ * @brief Handle RXNE flag for Master
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ uint32_t tmp;
+
+ tmp = hi2c->XferCount;
+ if (tmp > 3U)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ if (hi2c->XferCount == (uint16_t)3)
+ {
+ /* Disable BUF interrupt, this help to treat correctly the last 4 bytes
+ on BTF subroutine */
+ /* Disable BUF interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+ }
+ }
+ else if ((hi2c->XferOptions != I2C_FIRST_AND_NEXT_FRAME) && ((tmp == 1U) || (tmp == 0U)))
+ {
+ if (I2C_WaitOnSTOPRequestThroughIT(hi2c) == HAL_OK)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ else
+ {
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Call user error callback */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ErrorCallback(hi2c);
+#else
+ HAL_I2C_ErrorCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+}
+
+/**
+ * @brief Handle BTF flag for Master receiver
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ if (hi2c->XferCount == 4U)
+ {
+ /* Disable BUF interrupt, this help to treat correctly the last 2 bytes
+ on BTF subroutine if there is a reception delay between N-1 and N byte */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+ else if (hi2c->XferCount == 3U)
+ {
+ /* Disable BUF interrupt, this help to treat correctly the last 2 bytes
+ on BTF subroutine if there is a reception delay between N-1 and N byte */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+
+ if ((CurrentXferOptions != I2C_NEXT_FRAME) && (CurrentXferOptions != I2C_FIRST_AND_NEXT_FRAME))
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+ else if (hi2c->XferCount == 2U)
+ {
+ /* Prepare next transfer or stop current transfer */
+ if ((CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME_NO_STOP))
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ else if ((CurrentXferOptions == I2C_NEXT_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_NEXT_FRAME))
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ else if (CurrentXferOptions != I2C_LAST_FRAME_NO_STOP)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ /* Disable EVT and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->PreviousState = I2C_STATE_NONE;
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX;
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ else
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+}
+
+/**
+ * @brief Handle SB flag for Master
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_Master_SB(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ if (hi2c->EventCount == 0U)
+ {
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(hi2c->Devaddress);
+ }
+ else
+ {
+ hi2c->Instance->DR = I2C_7BIT_ADD_READ(hi2c->Devaddress);
+ }
+ }
+ else
+ {
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ /* Send slave 7 Bits address */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX)
+ {
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(hi2c->Devaddress);
+ }
+ else
+ {
+ hi2c->Instance->DR = I2C_7BIT_ADD_READ(hi2c->Devaddress);
+ }
+
+ if (((hi2c->hdmatx != NULL) && (hi2c->hdmatx->XferCpltCallback != NULL))
+ || ((hi2c->hdmarx != NULL) && (hi2c->hdmarx->XferCpltCallback != NULL)))
+ {
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+ }
+ }
+ else
+ {
+ if (hi2c->EventCount == 0U)
+ {
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(hi2c->Devaddress);
+ }
+ else if (hi2c->EventCount == 1U)
+ {
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_READ(hi2c->Devaddress);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+ }
+ }
+}
+
+/**
+ * @brief Handle ADD10 flag for Master
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_Master_ADD10(I2C_HandleTypeDef *hi2c)
+{
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_10BIT_ADDRESS(hi2c->Devaddress);
+
+ if ((hi2c->hdmatx != NULL) || (hi2c->hdmarx != NULL))
+ {
+ if ((hi2c->hdmatx->XferCpltCallback != NULL) || (hi2c->hdmarx->XferCpltCallback != NULL))
+ {
+ /* Enable DMA Request */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+ }
+ }
+}
+
+/**
+ * @brief Handle ADDR flag for Master
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_Master_ADDR(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+ uint32_t Prev_State = hi2c->PreviousState;
+
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ if ((hi2c->EventCount == 0U) && (CurrentMode == HAL_I2C_MODE_MEM))
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else if ((hi2c->EventCount == 0U) && (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT))
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Restart */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ hi2c->EventCount++;
+ }
+ else
+ {
+ if (hi2c->XferCount == 0U)
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ else if (hi2c->XferCount == 1U)
+ {
+ if (CurrentXferOptions == I2C_NO_OPTION_FRAME)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ }
+ /* Prepare next transfer or stop current transfer */
+ else if ((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) \
+ && ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (CurrentXferOptions == I2C_FIRST_FRAME)))
+ {
+ if ((CurrentXferOptions != I2C_NEXT_FRAME) && (CurrentXferOptions != I2C_FIRST_AND_NEXT_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME_NO_STOP))
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ }
+ else if (hi2c->XferCount == 2U)
+ {
+ if ((CurrentXferOptions != I2C_NEXT_FRAME) && (CurrentXferOptions != I2C_FIRST_AND_NEXT_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME_NO_STOP))
+ {
+ /* Enable Pos */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ if (((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) && ((CurrentXferOptions == I2C_NO_OPTION_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME_NO_STOP) || (CurrentXferOptions == I2C_LAST_FRAME)))
+ {
+ /* Enable Last DMA bit */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+ }
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ if (((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) && ((CurrentXferOptions == I2C_NO_OPTION_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME_NO_STOP) || (CurrentXferOptions == I2C_LAST_FRAME)))
+ {
+ /* Enable Last DMA bit */
+ SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ /* Reset Event counter */
+ hi2c->EventCount = 0U;
+ }
+ }
+ else
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+}
+
+/**
+ * @brief Handle TXE flag for Slave
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+
+ if (hi2c->XferCount != 0U)
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN))
+ {
+ /* Last Byte is received, disable Interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+
+ /* Set state at HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveTxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+}
+
+/**
+ * @brief Handle BTF flag for Slave transmitter
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->XferCount != 0U)
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+}
+
+/**
+ * @brief Handle RXNE flag for Slave
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+
+ if (hi2c->XferCount != 0U)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+
+ if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN))
+ {
+ /* Last Byte is received, disable Interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+
+ /* Set state at HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveRxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+}
+
+/**
+ * @brief Handle BTF flag for Slave receiver
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->XferCount != 0U)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+}
+
+/**
+ * @brief Handle ADD flag for Slave
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param IT2Flags Interrupt2 flags to handle.
+ * @retval None
+ */
+static void I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c, uint32_t IT2Flags)
+{
+ uint8_t TransferDirection = I2C_DIRECTION_RECEIVE;
+ uint16_t SlaveAddrCode;
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ /* Disable BUF interrupt, BUF enabling is manage through slave specific interface */
+ __HAL_I2C_DISABLE_IT(hi2c, (I2C_IT_BUF));
+
+ /* Transfer Direction requested by Master */
+ if (I2C_CHECK_FLAG(IT2Flags, I2C_FLAG_TRA) == RESET)
+ {
+ TransferDirection = I2C_DIRECTION_TRANSMIT;
+ }
+
+ if (I2C_CHECK_FLAG(IT2Flags, I2C_FLAG_DUALF) == RESET)
+ {
+ SlaveAddrCode = (uint16_t)hi2c->Init.OwnAddress1;
+ }
+ else
+ {
+ SlaveAddrCode = (uint16_t)hi2c->Init.OwnAddress2;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call Slave Addr callback */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AddrCallback(hi2c, TransferDirection, SlaveAddrCode);
+#else
+ HAL_I2C_AddrCallback(hi2c, TransferDirection, SlaveAddrCode);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ }
+}
+
+/**
+ * @brief Handle STOPF flag for Slave
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Clear STOPF flag */
+ __HAL_I2C_CLEAR_STOPFLAG(hi2c);
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* If a DMA is ongoing, Update handle size context */
+ if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ if ((CurrentState == HAL_I2C_STATE_BUSY_RX) || (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN))
+ {
+ hi2c->XferCount = (uint16_t)(__HAL_DMA_GET_COUNTER(hi2c->hdmarx));
+
+ if (hi2c->XferCount != 0U)
+ {
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+
+ /* Disable, stop the current DMA */
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Abort DMA Xfer if any */
+ if (HAL_DMA_GetState(hi2c->hdmarx) != HAL_DMA_STATE_READY)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ else
+ {
+ hi2c->XferCount = (uint16_t)(__HAL_DMA_GET_COUNTER(hi2c->hdmatx));
+
+ if (hi2c->XferCount != 0U)
+ {
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+
+ /* Disable, stop the current DMA */
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ /* Abort DMA Xfer if any */
+ if (HAL_DMA_GetState(hi2c->hdmatx) != HAL_DMA_STATE_READY)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ }
+ }
+
+ /* All data are not transferred, so set error code accordingly */
+ if (hi2c->XferCount != 0U)
+ {
+ /* Store Last receive data if any */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+
+ /* Store Last receive data if any */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ /* Update counter */
+ hi2c->XferCount--;
+ }
+
+ if (hi2c->XferCount != 0U)
+ {
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ }
+
+ if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c);
+ }
+ else
+ {
+ if (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ /* Set state at HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveRxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+
+ if (hi2c->State == HAL_I2C_STATE_LISTEN)
+ {
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ListenCpltCallback(hi2c);
+#else
+ HAL_I2C_ListenCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ if ((hi2c->PreviousState == I2C_STATE_SLAVE_BUSY_RX) || (CurrentState == HAL_I2C_STATE_BUSY_RX))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveRxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ }
+}
+
+/**
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+static void I2C_Slave_AF(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ if (((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME)) && \
+ (CurrentState == HAL_I2C_STATE_LISTEN))
+ {
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ListenCpltCallback(hi2c);
+#else
+ HAL_I2C_ListenCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else if (CurrentState == HAL_I2C_STATE_BUSY_TX)
+ {
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveTxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ /* Clear AF flag only */
+ /* State Listen, but XferOptions == FIRST or NEXT */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+ }
+}
+
+/**
+ * @brief I2C interrupts error process
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_ITError(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+ uint32_t CurrentError;
+
+ if (((CurrentMode == HAL_I2C_MODE_MASTER) || (CurrentMode == HAL_I2C_MODE_MEM)) && (CurrentState == HAL_I2C_STATE_BUSY_RX))
+ {
+ /* Disable Pos bit in I2C CR1 when error occurred in Master/Mem Receive IT Process */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+ }
+
+ if (((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ /* keep HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ }
+ else
+ {
+ /* If state is an abort treatment on going, don't change state */
+ /* This change will be do later */
+ if ((READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) != I2C_CR2_DMAEN) && (CurrentState != HAL_I2C_STATE_ABORT))
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ }
+ hi2c->PreviousState = I2C_STATE_NONE;
+ }
+
+ /* Abort DMA transfer */
+ if (READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) == I2C_CR2_DMAEN)
+ {
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ if (hi2c->hdmatx->State != HAL_DMA_STATE_READY)
+ {
+ /* Set the DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Disable I2C peripheral to prevent dummy data in buffer */
+ __HAL_I2C_DISABLE(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ else
+ {
+ /* Set the DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Store Last receive data if any */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+ }
+
+ /* Disable I2C peripheral to prevent dummy data in buffer */
+ __HAL_I2C_DISABLE(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Call Directly hi2c->hdmarx->XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ else if (hi2c->State == HAL_I2C_STATE_ABORT)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Store Last receive data if any */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+ }
+
+ /* Disable I2C peripheral to prevent dummy data in buffer */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AbortCpltCallback(hi2c);
+#else
+ HAL_I2C_AbortCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ /* Store Last receive data if any */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from DR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+ }
+
+ /* Call user error callback */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ErrorCallback(hi2c);
+#else
+ HAL_I2C_ErrorCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+
+ /* STOP Flag is not set after a NACK reception, BusError, ArbitrationLost, OverRun */
+ CurrentError = hi2c->ErrorCode;
+
+ if (((CurrentError & HAL_I2C_ERROR_BERR) == HAL_I2C_ERROR_BERR) || \
+ ((CurrentError & HAL_I2C_ERROR_ARLO) == HAL_I2C_ERROR_ARLO) || \
+ ((CurrentError & HAL_I2C_ERROR_AF) == HAL_I2C_ERROR_AF) || \
+ ((CurrentError & HAL_I2C_ERROR_OVR) == HAL_I2C_ERROR_OVR))
+ {
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+ }
+
+ /* So may inform upper layer that listen phase is stopped */
+ /* during NACK error treatment */
+ CurrentState = hi2c->State;
+ if (((hi2c->ErrorCode & HAL_I2C_ERROR_AF) == HAL_I2C_ERROR_AF) && (CurrentState == HAL_I2C_STATE_LISTEN))
+ {
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ListenCpltCallback(hi2c);
+#else
+ HAL_I2C_ListenCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart)
+{
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ /* Generate Start condition if first transfer */
+ if ((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+ else if (hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX)
+ {
+ /* Generate ReStart */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+ }
+ else
+ {
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress);
+
+ /* Wait until ADD10 flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress);
+ }
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address for read request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart)
+{
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start condition if first transfer */
+ if ((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME))
+ {
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+ else if (hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX)
+ {
+ /* Generate ReStart */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress);
+ }
+ else
+ {
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress);
+
+ /* Wait until ADD10 flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Restart */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_READ(DevAddress);
+ }
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address followed by internal memory address for write request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart)
+{
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* If Memory address size is 8Bit */
+ if (MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address followed by internal memory address for read request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart)
+{
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* Generate Start */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* If Memory address size is 8Bit */
+ if (MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ /* Wait until TXE flag is set */
+ if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+ return HAL_ERROR;
+ }
+
+ /* Generate Restart */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_START);
+
+ /* Wait until SB flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ if (READ_BIT(hi2c->Instance->CR1, I2C_CR1_START) == I2C_CR1_START)
+ {
+ hi2c->ErrorCode = HAL_I2C_WRONG_START;
+ }
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DMA I2C process complete callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMAXferCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+ HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode;
+ uint32_t CurrentXferOptions = hi2c->XferOptions;
+
+ /* Disable EVT and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Clear Complete callback */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->hdmatx->XferCpltCallback = NULL;
+ }
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->hdmarx->XferCpltCallback = NULL;
+ }
+
+ if ((((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_BUSY_TX) == (uint32_t)HAL_I2C_STATE_BUSY_TX) || ((((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_BUSY_RX) == (uint32_t)HAL_I2C_STATE_BUSY_RX) && (CurrentMode == HAL_I2C_MODE_SLAVE)))
+ {
+ /* Disable DMA Request */
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ hi2c->XferCount = 0U;
+
+ if (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ /* Set state at HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveTxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else if (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ /* Set state at HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveRxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Enable EVT and ERR interrupt to treat end of transfer in IRQ handler */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+ }
+ /* Check current Mode, in case of treatment DMA handler have been preempted by a prior interrupt */
+ else if (hi2c->Mode != HAL_I2C_MODE_NONE)
+ {
+ if (hi2c->XferCount == (uint16_t)1)
+ {
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+ }
+
+ /* Disable EVT and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ /* Prepare next transfer or stop current transfer */
+ if ((CurrentXferOptions == I2C_NO_OPTION_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_OTHER_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME))
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+ }
+
+ /* Disable Last DMA */
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_LAST);
+
+ /* Disable DMA Request */
+ CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN);
+
+ hi2c->XferCount = 0U;
+
+ /* Check if Errors has been detected during transfer */
+ if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ErrorCallback(hi2c);
+#else
+ HAL_I2C_ErrorCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+}
+
+/**
+ * @brief DMA I2C communication error callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMAError(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Clear Complete callback */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->hdmatx->XferCpltCallback = NULL;
+ }
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->hdmarx->XferCpltCallback = NULL;
+ }
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->XferCount = 0U;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ErrorCallback(hi2c);
+#else
+ HAL_I2C_ErrorCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief DMA I2C communication abort callback
+ * (To be called at end of DMA Abort procedure).
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void I2C_DMAAbort(DMA_HandleTypeDef *hdma)
+{
+ __IO uint32_t count = 0U;
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
+ HAL_I2C_StateTypeDef CurrentState = hi2c->State;
+
+ /* During abort treatment, check that there is no pending STOP request */
+ /* Wait until STOP flag is reset */
+ count = I2C_TIMEOUT_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ if (count == 0U)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ break;
+ }
+ count--;
+ }
+ while (READ_BIT(hi2c->Instance->CR1, I2C_CR1_STOP) == I2C_CR1_STOP);
+
+ /* Clear Complete callback */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->hdmatx->XferCpltCallback = NULL;
+ }
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->hdmarx->XferCpltCallback = NULL;
+ }
+
+ /* Disable Acknowledge */
+ CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ hi2c->XferCount = 0U;
+
+ /* Reset XferAbortCallback */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->hdmatx->XferAbortCallback = NULL;
+ }
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->hdmarx->XferAbortCallback = NULL;
+ }
+
+ /* Disable I2C peripheral to prevent dummy data in buffer */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Check if come from abort from user */
+ if (hi2c->State == HAL_I2C_STATE_ABORT)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AbortCpltCallback(hi2c);
+#else
+ HAL_I2C_AbortCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ if (((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ /* Renable I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+
+ /* Enable Acknowledge */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK);
+
+ /* keep HAL_I2C_STATE_LISTEN */
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ }
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ }
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ErrorCallback(hi2c);
+#else
+ HAL_I2C_ErrorCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param Flag specifies the I2C flag to check.
+ * @param Status The new Flag status (SET or RESET).
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart)
+{
+ /* Wait until flag is set */
+ while (__HAL_I2C_GET_FLAG(hi2c, Flag) == Status)
+ {
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for Master addressing phase.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param Flag specifies the I2C flag to check.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
+ {
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Generate Stop */
+ SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);
+
+ /* Clear AF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of TXE flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnTXEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if (I2C_IsAcknowledgeFailed(hi2c) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of BTF flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnBTFFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if (I2C_IsAcknowledgeFailed(hi2c) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of STOP flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if (I2C_IsAcknowledgeFailed(hi2c) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of STOP request through Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnSTOPRequestThroughIT(I2C_HandleTypeDef *hi2c)
+{
+ __IO uint32_t count = 0U;
+
+ /* Wait until STOP flag is reset */
+ count = I2C_TIMEOUT_STOP_FLAG * (SystemCoreClock / 25U / 1000U);
+ do
+ {
+ count--;
+ if (count == 0U)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ return HAL_ERROR;
+ }
+ }
+ while (READ_BIT(hi2c->Instance->CR1, I2C_CR1_STOP) == I2C_CR1_STOP);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of RXNE flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == RESET)
+ {
+ /* Check if a STOPF is detected */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET)
+ {
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles Acknowledge failed detection during an I2C Communication.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c)
+{
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Clear NACKF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Convert I2Cx OTHER_xxx XferOptions to functionnal XferOptions.
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c)
+{
+ /* if user set XferOptions to I2C_OTHER_FRAME */
+ /* it request implicitly to generate a restart condition */
+ /* set XferOptions to I2C_FIRST_FRAME */
+ if (hi2c->XferOptions == I2C_OTHER_FRAME)
+ {
+ hi2c->XferOptions = I2C_FIRST_FRAME;
+ }
+ /* else if user set XferOptions to I2C_OTHER_AND_LAST_FRAME */
+ /* it request implicitly to generate a restart condition */
+ /* then generate a stop condition at the end of transfer */
+ /* set XferOptions to I2C_FIRST_AND_LAST_FRAME */
+ else if (hi2c->XferOptions == I2C_OTHER_AND_LAST_FRAME)
+ {
+ hi2c->XferOptions = I2C_FIRST_AND_LAST_FRAME;
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_I2C_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
--
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