/**
|
******************************************************************************
|
* @file stm32f1xx_hal_uart.c
|
* @author MCD Application Team
|
* @brief UART HAL module driver.
|
* This file provides firmware functions to manage the following
|
* functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
|
* + Initialization and de-initialization functions
|
* + IO operation functions
|
* + Peripheral Control functions
|
* + Peripheral State and Errors functions
|
@verbatim
|
==============================================================================
|
##### How to use this driver #####
|
==============================================================================
|
[..]
|
The UART HAL driver can be used as follows:
|
|
(#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).
|
(#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
|
(##) Enable the USARTx interface clock.
|
(##) UART pins configuration:
|
(+++) Enable the clock for the UART GPIOs.
|
(+++) Configure these UART pins (TX as alternate function pull-up, RX as alternate function Input).
|
(##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
|
and HAL_UART_Receive_IT() APIs):
|
(+++) Configure the USARTx interrupt priority.
|
(+++) Enable the NVIC USART IRQ handle.
|
(##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
|
and HAL_UART_Receive_DMA() APIs):
|
(+++) Declare a DMA handle structure for the Tx/Rx channel.
|
(+++) Enable the DMAx interface clock.
|
(+++) Configure the declared DMA handle structure with the required
|
Tx/Rx parameters.
|
(+++) Configure the DMA Tx/Rx channel.
|
(+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
|
(+++) Configure the priority and enable the NVIC for the transfer complete
|
interrupt on the DMA Tx/Rx channel.
|
(+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle
|
(used for last byte sending completion detection in DMA non circular mode)
|
|
(#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
|
flow control and Mode(Receiver/Transmitter) in the huart Init structure.
|
|
(#) For the UART asynchronous mode, initialize the UART registers by calling
|
the HAL_UART_Init() API.
|
|
(#) For the UART Half duplex mode, initialize the UART registers by calling
|
the HAL_HalfDuplex_Init() API.
|
|
(#) For the LIN mode, initialize the UART registers by calling the HAL_LIN_Init() API.
|
|
(#) For the Multi-Processor mode, initialize the UART registers by calling
|
the HAL_MultiProcessor_Init() API.
|
|
[..]
|
(@) The specific UART interrupts (Transmission complete interrupt,
|
RXNE interrupt and Error Interrupts) will be managed using the macros
|
__HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit
|
and receive process.
|
|
[..]
|
(@) These APIs (HAL_UART_Init() and HAL_HalfDuplex_Init()) configure also the
|
low level Hardware GPIO, CLOCK, CORTEX...etc) by calling the customized
|
HAL_UART_MspInit() API.
|
|
##### Callback registration #####
|
==================================
|
|
[..]
|
The compilation define USE_HAL_UART_REGISTER_CALLBACKS when set to 1
|
allows the user to configure dynamically the driver callbacks.
|
|
[..]
|
Use Function @ref HAL_UART_RegisterCallback() to register a user callback.
|
Function @ref HAL_UART_RegisterCallback() allows to register following callbacks:
|
(+) TxHalfCpltCallback : Tx Half Complete Callback.
|
(+) TxCpltCallback : Tx Complete Callback.
|
(+) RxHalfCpltCallback : Rx Half Complete Callback.
|
(+) RxCpltCallback : Rx Complete Callback.
|
(+) ErrorCallback : Error Callback.
|
(+) AbortCpltCallback : Abort Complete Callback.
|
(+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
|
(+) AbortReceiveCpltCallback : Abort Receive Complete Callback.
|
(+) MspInitCallback : UART MspInit.
|
(+) MspDeInitCallback : UART MspDeInit.
|
This function takes as parameters the HAL peripheral handle, the Callback ID
|
and a pointer to the user callback function.
|
|
[..]
|
Use function @ref HAL_UART_UnRegisterCallback() to reset a callback to the default
|
weak (surcharged) function.
|
@ref HAL_UART_UnRegisterCallback() takes as parameters the HAL peripheral handle,
|
and the Callback ID.
|
This function allows to reset following callbacks:
|
(+) TxHalfCpltCallback : Tx Half Complete Callback.
|
(+) TxCpltCallback : Tx Complete Callback.
|
(+) RxHalfCpltCallback : Rx Half Complete Callback.
|
(+) RxCpltCallback : Rx Complete Callback.
|
(+) ErrorCallback : Error Callback.
|
(+) AbortCpltCallback : Abort Complete Callback.
|
(+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
|
(+) AbortReceiveCpltCallback : Abort Receive Complete Callback.
|
(+) MspInitCallback : UART MspInit.
|
(+) MspDeInitCallback : UART MspDeInit.
|
|
[..]
|
By default, after the @ref HAL_UART_Init() and when the state is HAL_UART_STATE_RESET
|
all callbacks are set to the corresponding weak (surcharged) functions:
|
examples @ref HAL_UART_TxCpltCallback(), @ref HAL_UART_RxHalfCpltCallback().
|
Exception done for MspInit and MspDeInit functions that are respectively
|
reset to the legacy weak (surcharged) functions in the @ref HAL_UART_Init()
|
and @ref HAL_UART_DeInit() only when these callbacks are null (not registered beforehand).
|
If not, MspInit or MspDeInit are not null, the @ref HAL_UART_Init() and @ref HAL_UART_DeInit()
|
keep and use the user MspInit/MspDeInit callbacks (registered beforehand).
|
|
[..]
|
Callbacks can be registered/unregistered in HAL_UART_STATE_READY state only.
|
Exception done MspInit/MspDeInit that can be registered/unregistered
|
in HAL_UART_STATE_READY or HAL_UART_STATE_RESET state, thus registered (user)
|
MspInit/DeInit callbacks can be used during the Init/DeInit.
|
In that case first register the MspInit/MspDeInit user callbacks
|
using @ref HAL_UART_RegisterCallback() before calling @ref HAL_UART_DeInit()
|
or @ref HAL_UART_Init() function.
|
|
[..]
|
When The compilation define USE_HAL_UART_REGISTER_CALLBACKS is set to 0 or
|
not defined, the callback registration feature is not available
|
and weak (surcharged) callbacks are used.
|
|
[..]
|
Three operation modes are available within this driver :
|
|
*** Polling mode IO operation ***
|
=================================
|
[..]
|
(+) Send an amount of data in blocking mode using HAL_UART_Transmit()
|
(+) Receive an amount of data in blocking mode using HAL_UART_Receive()
|
|
*** Interrupt mode IO operation ***
|
===================================
|
[..]
|
(+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT()
|
(+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
|
add his own code by customization of function pointer HAL_UART_TxCpltCallback
|
(+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT()
|
(+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
|
add his own code by customization of function pointer HAL_UART_RxCpltCallback
|
(+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
|
add his own code by customization of function pointer HAL_UART_ErrorCallback
|
|
*** DMA mode IO operation ***
|
==============================
|
[..]
|
(+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA()
|
(+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
|
add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
|
(+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
|
add his own code by customization of function pointer HAL_UART_TxCpltCallback
|
(+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA()
|
(+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
|
add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
|
(+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
|
add his own code by customization of function pointer HAL_UART_RxCpltCallback
|
(+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
|
add his own code by customization of function pointer HAL_UART_ErrorCallback
|
(+) Pause the DMA Transfer using HAL_UART_DMAPause()
|
(+) Resume the DMA Transfer using HAL_UART_DMAResume()
|
(+) Stop the DMA Transfer using HAL_UART_DMAStop()
|
|
*** UART HAL driver macros list ***
|
=============================================
|
[..]
|
Below the list of most used macros in UART HAL driver.
|
|
(+) __HAL_UART_ENABLE: Enable the UART peripheral
|
(+) __HAL_UART_DISABLE: Disable the UART peripheral
|
(+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not
|
(+) __HAL_UART_CLEAR_FLAG : Clear the specified UART pending flag
|
(+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt
|
(+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt
|
(+) __HAL_UART_GET_IT_SOURCE: Check whether the specified UART interrupt has occurred or not
|
|
[..]
|
(@) You can refer to the UART HAL driver header file for more useful macros
|
|
@endverbatim
|
[..]
|
(@) Additionnal remark: If the parity is enabled, then the MSB bit of the data written
|
in the data register is transmitted but is changed by the parity bit.
|
Depending on the frame length defined by the M bit (8-bits or 9-bits),
|
the possible UART frame formats are as listed in the following table:
|
+-------------------------------------------------------------+
|
| M bit | PCE bit | UART frame |
|
|---------------------|---------------------------------------|
|
| 0 | 0 | | SB | 8 bit data | STB | |
|
|---------|-----------|---------------------------------------|
|
| 0 | 1 | | SB | 7 bit data | PB | STB | |
|
|---------|-----------|---------------------------------------|
|
| 1 | 0 | | SB | 9 bit data | STB | |
|
|---------|-----------|---------------------------------------|
|
| 1 | 1 | | SB | 8 bit data | PB | STB | |
|
+-------------------------------------------------------------+
|
******************************************************************************
|
* @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 UART UART
|
* @brief HAL UART module driver
|
* @{
|
*/
|
#ifdef HAL_UART_MODULE_ENABLED
|
|
/* Private typedef -----------------------------------------------------------*/
|
/* Private define ------------------------------------------------------------*/
|
/** @addtogroup UART_Private_Constants
|
* @{
|
*/
|
/**
|
* @}
|
*/
|
/* Private macro -------------------------------------------------------------*/
|
/* Private variables ---------------------------------------------------------*/
|
/* Private function prototypes -----------------------------------------------*/
|
/** @addtogroup UART_Private_Functions UART Private Functions
|
* @{
|
*/
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
static void UART_EndTxTransfer(UART_HandleTypeDef *huart);
|
static void UART_EndRxTransfer(UART_HandleTypeDef *huart);
|
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
|
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
|
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
|
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
|
static void UART_DMAError(DMA_HandleTypeDef *hdma);
|
static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
|
static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
|
static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
|
static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
|
static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
|
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
|
static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
|
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
|
static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout);
|
static void UART_SetConfig(UART_HandleTypeDef *huart);
|
|
/**
|
* @}
|
*/
|
|
/* Exported functions ---------------------------------------------------------*/
|
/** @defgroup UART_Exported_Functions UART Exported Functions
|
* @{
|
*/
|
|
/** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
|
* @brief Initialization and Configuration functions
|
*
|
@verbatim
|
===============================================================================
|
##### Initialization and Configuration functions #####
|
===============================================================================
|
[..]
|
This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
|
in asynchronous mode.
|
(+) For the asynchronous mode only these parameters can be configured:
|
(++) Baud Rate
|
(++) Word Length
|
(++) Stop Bit
|
(++) Parity: If the parity is enabled, then the MSB bit of the data written
|
in the data register is transmitted but is changed by the parity bit.
|
Depending on the frame length defined by the M bit (8-bits or 9-bits),
|
please refer to Reference manual for possible UART frame formats.
|
(++) Hardware flow control
|
(++) Receiver/transmitter modes
|
(++) Over Sampling Method
|
[..]
|
The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init() and HAL_MultiProcessor_Init() APIs
|
follow respectively the UART asynchronous, UART Half duplex, LIN and Multi-Processor configuration
|
procedures (details for the procedures are available in reference manuals
|
(RM0008 for STM32F10Xxx MCUs and RM0041 for STM32F100xx MCUs)).
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Initializes the UART mode according to the specified parameters in
|
* the UART_InitTypeDef and create the associated handle.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
|
{
|
/* Check the UART handle allocation */
|
if (huart == NULL)
|
{
|
return HAL_ERROR;
|
}
|
|
/* Check the parameters */
|
if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
|
{
|
/* The hardware flow control is available only for USART1, USART2 and USART3 */
|
assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
|
assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
|
}
|
else
|
{
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
}
|
assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
|
#if defined(USART_CR1_OVER8)
|
assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
|
#endif /* USART_CR1_OVER8 */
|
|
if (huart->gState == HAL_UART_STATE_RESET)
|
{
|
/* Allocate lock resource and initialize it */
|
huart->Lock = HAL_UNLOCKED;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
UART_InitCallbacksToDefault(huart);
|
|
if (huart->MspInitCallback == NULL)
|
{
|
huart->MspInitCallback = HAL_UART_MspInit;
|
}
|
|
/* Init the low level hardware */
|
huart->MspInitCallback(huart);
|
#else
|
/* Init the low level hardware : GPIO, CLOCK */
|
HAL_UART_MspInit(huart);
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
}
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Disable the peripheral */
|
__HAL_UART_DISABLE(huart);
|
|
/* Set the UART Communication parameters */
|
UART_SetConfig(huart);
|
|
/* In asynchronous mode, the following bits must be kept cleared:
|
- LINEN and CLKEN bits in the USART_CR2 register,
|
- SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
|
|
/* Enable the peripheral */
|
__HAL_UART_ENABLE(huart);
|
|
/* Initialize the UART state */
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Initializes the half-duplex mode according to the specified
|
* parameters in the UART_InitTypeDef and create the associated handle.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
|
{
|
/* Check the UART handle allocation */
|
if (huart == NULL)
|
{
|
return HAL_ERROR;
|
}
|
|
/* Check the parameters */
|
assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
|
assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
|
#if defined(USART_CR1_OVER8)
|
assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
|
#endif /* USART_CR1_OVER8 */
|
|
if (huart->gState == HAL_UART_STATE_RESET)
|
{
|
/* Allocate lock resource and initialize it */
|
huart->Lock = HAL_UNLOCKED;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
UART_InitCallbacksToDefault(huart);
|
|
if (huart->MspInitCallback == NULL)
|
{
|
huart->MspInitCallback = HAL_UART_MspInit;
|
}
|
|
/* Init the low level hardware */
|
huart->MspInitCallback(huart);
|
#else
|
/* Init the low level hardware : GPIO, CLOCK */
|
HAL_UART_MspInit(huart);
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
}
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Disable the peripheral */
|
__HAL_UART_DISABLE(huart);
|
|
/* Set the UART Communication parameters */
|
UART_SetConfig(huart);
|
|
/* In half-duplex mode, the following bits must be kept cleared:
|
- LINEN and CLKEN bits in the USART_CR2 register,
|
- SCEN and IREN bits in the USART_CR3 register.*/
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN));
|
|
/* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
|
SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
|
|
/* Enable the peripheral */
|
__HAL_UART_ENABLE(huart);
|
|
/* Initialize the UART state*/
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Initializes the LIN mode according to the specified
|
* parameters in the UART_InitTypeDef and create the associated handle.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param BreakDetectLength Specifies the LIN break detection length.
|
* This parameter can be one of the following values:
|
* @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
|
* @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
|
{
|
/* Check the UART handle allocation */
|
if (huart == NULL)
|
{
|
return HAL_ERROR;
|
}
|
|
/* Check the LIN UART instance */
|
assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
|
|
/* Check the Break detection length parameter */
|
assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
|
assert_param(IS_UART_LIN_WORD_LENGTH(huart->Init.WordLength));
|
#if defined(USART_CR1_OVER8)
|
assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling));
|
#endif /* USART_CR1_OVER8 */
|
|
if (huart->gState == HAL_UART_STATE_RESET)
|
{
|
/* Allocate lock resource and initialize it */
|
huart->Lock = HAL_UNLOCKED;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
UART_InitCallbacksToDefault(huart);
|
|
if (huart->MspInitCallback == NULL)
|
{
|
huart->MspInitCallback = HAL_UART_MspInit;
|
}
|
|
/* Init the low level hardware */
|
huart->MspInitCallback(huart);
|
#else
|
/* Init the low level hardware : GPIO, CLOCK */
|
HAL_UART_MspInit(huart);
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
}
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Disable the peripheral */
|
__HAL_UART_DISABLE(huart);
|
|
/* Set the UART Communication parameters */
|
UART_SetConfig(huart);
|
|
/* In LIN mode, the following bits must be kept cleared:
|
- CLKEN bits in the USART_CR2 register,
|
- SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_CLKEN));
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN));
|
|
/* Enable the LIN mode by setting the LINEN bit in the CR2 register */
|
SET_BIT(huart->Instance->CR2, USART_CR2_LINEN);
|
|
/* Set the USART LIN Break detection length. */
|
CLEAR_BIT(huart->Instance->CR2, USART_CR2_LBDL);
|
SET_BIT(huart->Instance->CR2, BreakDetectLength);
|
|
/* Enable the peripheral */
|
__HAL_UART_ENABLE(huart);
|
|
/* Initialize the UART state*/
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Initializes the Multi-Processor mode according to the specified
|
* parameters in the UART_InitTypeDef and create the associated handle.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param Address USART address
|
* @param WakeUpMethod specifies the USART wake-up method.
|
* This parameter can be one of the following values:
|
* @arg UART_WAKEUPMETHOD_IDLELINE: Wake-up by an idle line detection
|
* @arg UART_WAKEUPMETHOD_ADDRESSMARK: Wake-up by an address mark
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
|
{
|
/* Check the UART handle allocation */
|
if (huart == NULL)
|
{
|
return HAL_ERROR;
|
}
|
|
/* Check the parameters */
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
/* Check the Address & wake up method parameters */
|
assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
|
assert_param(IS_UART_ADDRESS(Address));
|
assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
|
#if defined(USART_CR1_OVER8)
|
assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
|
#endif /* USART_CR1_OVER8 */
|
|
if (huart->gState == HAL_UART_STATE_RESET)
|
{
|
/* Allocate lock resource and initialize it */
|
huart->Lock = HAL_UNLOCKED;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
UART_InitCallbacksToDefault(huart);
|
|
if (huart->MspInitCallback == NULL)
|
{
|
huart->MspInitCallback = HAL_UART_MspInit;
|
}
|
|
/* Init the low level hardware */
|
huart->MspInitCallback(huart);
|
#else
|
/* Init the low level hardware : GPIO, CLOCK */
|
HAL_UART_MspInit(huart);
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
}
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Disable the peripheral */
|
__HAL_UART_DISABLE(huart);
|
|
/* Set the UART Communication parameters */
|
UART_SetConfig(huart);
|
|
/* In Multi-Processor mode, the following bits must be kept cleared:
|
- LINEN and CLKEN bits in the USART_CR2 register,
|
- SCEN, HDSEL and IREN bits in the USART_CR3 register */
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
|
|
/* Set the USART address node */
|
CLEAR_BIT(huart->Instance->CR2, USART_CR2_ADD);
|
SET_BIT(huart->Instance->CR2, Address);
|
|
/* Set the wake up method by setting the WAKE bit in the CR1 register */
|
CLEAR_BIT(huart->Instance->CR1, USART_CR1_WAKE);
|
SET_BIT(huart->Instance->CR1, WakeUpMethod);
|
|
/* Enable the peripheral */
|
__HAL_UART_ENABLE(huart);
|
|
/* Initialize the UART state */
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief DeInitializes the UART peripheral.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
|
{
|
/* Check the UART handle allocation */
|
if (huart == NULL)
|
{
|
return HAL_ERROR;
|
}
|
|
/* Check the parameters */
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Disable the Peripheral */
|
__HAL_UART_DISABLE(huart);
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
if (huart->MspDeInitCallback == NULL)
|
{
|
huart->MspDeInitCallback = HAL_UART_MspDeInit;
|
}
|
/* DeInit the low level hardware */
|
huart->MspDeInitCallback(huart);
|
#else
|
/* DeInit the low level hardware */
|
HAL_UART_MspDeInit(huart);
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_RESET;
|
huart->RxState = HAL_UART_STATE_RESET;
|
|
/* Process Unlock */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief UART MSP Init.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_MspInit could be implemented in the user file
|
*/
|
}
|
|
/**
|
* @brief UART MSP DeInit.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_MspDeInit could be implemented in the user file
|
*/
|
}
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/**
|
* @brief Register a User UART Callback
|
* To be used instead of the weak predefined callback
|
* @param huart uart handle
|
* @param CallbackID ID of the callback to be registered
|
* This parameter can be one of the following values:
|
* @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
|
* @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID
|
* @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
|
* @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID
|
* @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID
|
* @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
|
* @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
|
* @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
|
* @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID
|
* @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID
|
* @param pCallback pointer to the Callback function
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_RegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID, pUART_CallbackTypeDef pCallback)
|
{
|
HAL_StatusTypeDef status = HAL_OK;
|
|
if (pCallback == NULL)
|
{
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
return HAL_ERROR;
|
}
|
/* Process locked */
|
__HAL_LOCK(huart);
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
{
|
switch (CallbackID)
|
{
|
case HAL_UART_TX_HALFCOMPLETE_CB_ID :
|
huart->TxHalfCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_TX_COMPLETE_CB_ID :
|
huart->TxCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_RX_HALFCOMPLETE_CB_ID :
|
huart->RxHalfCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_RX_COMPLETE_CB_ID :
|
huart->RxCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_ERROR_CB_ID :
|
huart->ErrorCallback = pCallback;
|
break;
|
|
case HAL_UART_ABORT_COMPLETE_CB_ID :
|
huart->AbortCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
|
huart->AbortTransmitCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
|
huart->AbortReceiveCpltCallback = pCallback;
|
break;
|
|
case HAL_UART_MSPINIT_CB_ID :
|
huart->MspInitCallback = pCallback;
|
break;
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
huart->MspDeInitCallback = pCallback;
|
break;
|
|
default :
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
/* Return error status */
|
status = HAL_ERROR;
|
break;
|
}
|
}
|
else if (huart->gState == HAL_UART_STATE_RESET)
|
{
|
switch (CallbackID)
|
{
|
case HAL_UART_MSPINIT_CB_ID :
|
huart->MspInitCallback = pCallback;
|
break;
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
huart->MspDeInitCallback = pCallback;
|
break;
|
|
default :
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
/* Return error status */
|
status = HAL_ERROR;
|
break;
|
}
|
}
|
else
|
{
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
/* Return error status */
|
status = HAL_ERROR;
|
}
|
|
/* Release Lock */
|
__HAL_UNLOCK(huart);
|
|
return status;
|
}
|
|
/**
|
* @brief Unregister an UART Callback
|
* UART callaback is redirected to the weak predefined callback
|
* @param huart uart handle
|
* @param CallbackID ID of the callback to be unregistered
|
* This parameter can be one of the following values:
|
* @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
|
* @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID
|
* @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
|
* @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID
|
* @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID
|
* @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
|
* @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
|
* @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
|
* @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID
|
* @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID)
|
{
|
HAL_StatusTypeDef status = HAL_OK;
|
|
/* Process locked */
|
__HAL_LOCK(huart);
|
|
if (HAL_UART_STATE_READY == huart->gState)
|
{
|
switch (CallbackID)
|
{
|
case HAL_UART_TX_HALFCOMPLETE_CB_ID :
|
huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
|
break;
|
|
case HAL_UART_TX_COMPLETE_CB_ID :
|
huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */
|
break;
|
|
case HAL_UART_RX_HALFCOMPLETE_CB_ID :
|
huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
|
break;
|
|
case HAL_UART_RX_COMPLETE_CB_ID :
|
huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */
|
break;
|
|
case HAL_UART_ERROR_CB_ID :
|
huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */
|
break;
|
|
case HAL_UART_ABORT_COMPLETE_CB_ID :
|
huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
|
break;
|
|
case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
|
huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
|
break;
|
|
case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
|
huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */
|
break;
|
|
case HAL_UART_MSPINIT_CB_ID :
|
huart->MspInitCallback = HAL_UART_MspInit; /* Legacy weak MspInitCallback */
|
break;
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
huart->MspDeInitCallback = HAL_UART_MspDeInit; /* Legacy weak MspDeInitCallback */
|
break;
|
|
default :
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
/* Return error status */
|
status = HAL_ERROR;
|
break;
|
}
|
}
|
else if (HAL_UART_STATE_RESET == huart->gState)
|
{
|
switch (CallbackID)
|
{
|
case HAL_UART_MSPINIT_CB_ID :
|
huart->MspInitCallback = HAL_UART_MspInit;
|
break;
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
huart->MspDeInitCallback = HAL_UART_MspDeInit;
|
break;
|
|
default :
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
/* Return error status */
|
status = HAL_ERROR;
|
break;
|
}
|
}
|
else
|
{
|
/* Update the error code */
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
/* Return error status */
|
status = HAL_ERROR;
|
}
|
|
/* Release Lock */
|
__HAL_UNLOCK(huart);
|
|
return status;
|
}
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup UART_Exported_Functions_Group2 IO operation functions
|
* @brief UART Transmit and Receive functions
|
*
|
@verbatim
|
===============================================================================
|
##### IO operation functions #####
|
===============================================================================
|
This subsection provides a set of functions allowing to manage the UART asynchronous
|
and Half duplex data transfers.
|
|
(#) There are two modes of transfer:
|
(+) Blocking mode: The communication is performed in polling mode.
|
The HAL status of all data processing is returned by the same function
|
after finishing transfer.
|
(+) Non-Blocking mode: The communication is performed using Interrupts
|
or DMA, these API's return the HAL status.
|
The end of the data processing will be indicated through the
|
dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
|
using DMA mode.
|
The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
|
will be executed respectively at the end of the transmit or receive process
|
The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected.
|
|
(#) Blocking mode API's are :
|
(+) HAL_UART_Transmit()
|
(+) HAL_UART_Receive()
|
|
(#) Non-Blocking mode API's with Interrupt are :
|
(+) HAL_UART_Transmit_IT()
|
(+) HAL_UART_Receive_IT()
|
(+) HAL_UART_IRQHandler()
|
|
(#) Non-Blocking mode API's with DMA are :
|
(+) HAL_UART_Transmit_DMA()
|
(+) HAL_UART_Receive_DMA()
|
(+) HAL_UART_DMAPause()
|
(+) HAL_UART_DMAResume()
|
(+) HAL_UART_DMAStop()
|
|
(#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode:
|
(+) HAL_UART_TxHalfCpltCallback()
|
(+) HAL_UART_TxCpltCallback()
|
(+) HAL_UART_RxHalfCpltCallback()
|
(+) HAL_UART_RxCpltCallback()
|
(+) HAL_UART_ErrorCallback()
|
|
(#) Non-Blocking mode transfers could be aborted using Abort API's :
|
(+) HAL_UART_Abort()
|
(+) HAL_UART_AbortTransmit()
|
(+) HAL_UART_AbortReceive()
|
(+) HAL_UART_Abort_IT()
|
(+) HAL_UART_AbortTransmit_IT()
|
(+) HAL_UART_AbortReceive_IT()
|
|
(#) For Abort services based on interrupts (HAL_UART_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
|
(+) HAL_UART_AbortCpltCallback()
|
(+) HAL_UART_AbortTransmitCpltCallback()
|
(+) HAL_UART_AbortReceiveCpltCallback()
|
|
(#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
|
Errors are handled as follows :
|
(+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
|
to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
|
Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
|
and HAL_UART_ErrorCallback() user callback is executed. Transfer is kept ongoing on UART side.
|
If user wants to abort it, Abort services should be called by user.
|
(+) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
|
This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
|
Error code is set to allow user to identify error type, and HAL_UART_ErrorCallback() user callback is executed.
|
|
-@- In the Half duplex communication, it is forbidden to run the transmit
|
and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Sends an amount of data in blocking mode.
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
* the sent data is handled as a set of u16. In this case, Size must indicate the number
|
* of u16 provided through pData.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
* @param Size Amount of data elements (u8 or u16) to be sent
|
* @param Timeout Timeout duration
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
{
|
uint8_t *pdata8bits;
|
uint16_t *pdata16bits;
|
uint32_t tickstart = 0U;
|
|
/* Check that a Tx process is not already ongoing */
|
if (huart->gState == HAL_UART_STATE_READY)
|
{
|
if ((pData == NULL) || (Size == 0U))
|
{
|
return HAL_ERROR;
|
}
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_BUSY_TX;
|
|
/* Init tickstart for timeout managment */
|
tickstart = HAL_GetTick();
|
|
huart->TxXferSize = Size;
|
huart->TxXferCount = Size;
|
|
/* In case of 9bits/No Parity transfer, pData needs to be handled as a uint16_t pointer */
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
{
|
pdata8bits = NULL;
|
pdata16bits = (uint16_t *) pData;
|
}
|
else
|
{
|
pdata8bits = pData;
|
pdata16bits = NULL;
|
}
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
while (huart->TxXferCount > 0U)
|
{
|
if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
|
{
|
return HAL_TIMEOUT;
|
}
|
if (pdata8bits == NULL)
|
{
|
huart->Instance->DR = (uint16_t)(*pdata16bits & 0x01FFU);
|
pdata16bits++;
|
}
|
else
|
{
|
huart->Instance->DR = (uint8_t)(*pdata8bits & 0xFFU);
|
pdata8bits++;
|
}
|
huart->TxXferCount--;
|
}
|
|
if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
{
|
return HAL_TIMEOUT;
|
}
|
|
/* At end of Tx process, restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Receives an amount of data in blocking mode.
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
* the received data is handled as a set of u16. In this case, Size must indicate the number
|
* of u16 available through pData.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
* @param Timeout Timeout duration
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
{
|
uint8_t *pdata8bits;
|
uint16_t *pdata16bits;
|
uint32_t tickstart = 0U;
|
|
/* Check that a Rx process is not already ongoing */
|
if (huart->RxState == HAL_UART_STATE_READY)
|
{
|
if ((pData == NULL) || (Size == 0U))
|
{
|
return HAL_ERROR;
|
}
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
/* Init tickstart for timeout managment */
|
tickstart = HAL_GetTick();
|
|
huart->RxXferSize = Size;
|
huart->RxXferCount = Size;
|
|
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
{
|
pdata8bits = NULL;
|
pdata16bits = (uint16_t *) pData;
|
}
|
else
|
{
|
pdata8bits = pData;
|
pdata16bits = NULL;
|
}
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
/* Check the remain data to be received */
|
while (huart->RxXferCount > 0U)
|
{
|
if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
|
{
|
return HAL_TIMEOUT;
|
}
|
if (pdata8bits == NULL)
|
{
|
*pdata16bits = (uint16_t)(huart->Instance->DR & 0x01FF);
|
pdata16bits++;
|
}
|
else
|
{
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
|
{
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
}
|
else
|
{
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
}
|
pdata8bits++;
|
}
|
huart->RxXferCount--;
|
}
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Sends an amount of data in non blocking mode.
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
* the sent data is handled as a set of u16. In this case, Size must indicate the number
|
* of u16 provided through pData.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
* @param Size Amount of data elements (u8 or u16) to be sent
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
{
|
/* Check that a Tx process is not already ongoing */
|
if (huart->gState == HAL_UART_STATE_READY)
|
{
|
if ((pData == NULL) || (Size == 0U))
|
{
|
return HAL_ERROR;
|
}
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->pTxBuffPtr = pData;
|
huart->TxXferSize = Size;
|
huart->TxXferCount = Size;
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_BUSY_TX;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
/* Enable the UART Transmit data register empty Interrupt */
|
__HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
|
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Receives an amount of data in non blocking mode.
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
* the received data is handled as a set of u16. In this case, Size must indicate the number
|
* of u16 available through pData.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
{
|
/* Check that a Rx process is not already ongoing */
|
if (huart->RxState == HAL_UART_STATE_READY)
|
{
|
if ((pData == NULL) || (Size == 0U))
|
{
|
return HAL_ERROR;
|
}
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->pRxBuffPtr = pData;
|
huart->RxXferSize = Size;
|
huart->RxXferCount = Size;
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
/* Enable the UART Parity Error Interrupt */
|
__HAL_UART_ENABLE_IT(huart, UART_IT_PE);
|
|
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
__HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
|
|
/* Enable the UART Data Register not empty Interrupt */
|
__HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
|
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Sends an amount of data in DMA mode.
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
* the sent data is handled as a set of u16. In this case, Size must indicate the number
|
* of u16 provided through pData.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
* @param Size Amount of data elements (u8 or u16) to be sent
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
{
|
uint32_t *tmp;
|
|
/* Check that a Tx process is not already ongoing */
|
if (huart->gState == HAL_UART_STATE_READY)
|
{
|
if ((pData == NULL) || (Size == 0U))
|
{
|
return HAL_ERROR;
|
}
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->pTxBuffPtr = pData;
|
huart->TxXferSize = Size;
|
huart->TxXferCount = Size;
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->gState = HAL_UART_STATE_BUSY_TX;
|
|
/* Set the UART DMA transfer complete callback */
|
huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
|
|
/* Set the UART DMA Half transfer complete callback */
|
huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
|
|
/* Set the DMA error callback */
|
huart->hdmatx->XferErrorCallback = UART_DMAError;
|
|
/* Set the DMA abort callback */
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
/* Enable the UART transmit DMA channel */
|
tmp = (uint32_t *)&pData;
|
HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t *)tmp, (uint32_t)&huart->Instance->DR, Size);
|
|
/* Clear the TC flag in the SR register by writing 0 to it */
|
__HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
in the UART CR3 register */
|
SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Receives an amount of data in DMA mode.
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
* the received data is handled as a set of u16. In this case, Size must indicate the number
|
* of u16 available through pData.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
* @note When the UART parity is enabled (PCE = 1) the received data contains the parity bit.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
{
|
uint32_t *tmp;
|
|
/* Check that a Rx process is not already ongoing */
|
if (huart->RxState == HAL_UART_STATE_READY)
|
{
|
if ((pData == NULL) || (Size == 0U))
|
{
|
return HAL_ERROR;
|
}
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->pRxBuffPtr = pData;
|
huart->RxXferSize = Size;
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
/* Set the UART DMA transfer complete callback */
|
huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
|
|
/* Set the UART DMA Half transfer complete callback */
|
huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
|
|
/* Set the DMA error callback */
|
huart->hdmarx->XferErrorCallback = UART_DMAError;
|
|
/* Set the DMA abort callback */
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
/* Enable the DMA channel */
|
tmp = (uint32_t *)&pData;
|
HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->DR, *(uint32_t *)tmp, Size);
|
|
/* Clear the Overrun flag just before enabling the DMA Rx request: can be mandatory for the second transfer */
|
__HAL_UART_CLEAR_OREFLAG(huart);
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
/* Enable the UART Parity Error Interrupt */
|
SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
|
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
in the UART CR3 register */
|
SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Pauses the DMA Transfer.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
|
{
|
uint32_t dmarequest = 0x00U;
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
|
if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
|
{
|
/* Disable the UART DMA Tx request */
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
}
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
|
{
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Disable the UART DMA Rx request */
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
}
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Resumes the DMA Transfer.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
|
{
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
if (huart->gState == HAL_UART_STATE_BUSY_TX)
|
{
|
/* Enable the UART DMA Tx request */
|
SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
}
|
|
if (huart->RxState == HAL_UART_STATE_BUSY_RX)
|
{
|
/* Clear the Overrun flag before resuming the Rx transfer*/
|
__HAL_UART_CLEAR_OREFLAG(huart);
|
|
/* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Enable the UART DMA Rx request */
|
SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
}
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Stops the DMA Transfer.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
|
{
|
uint32_t dmarequest = 0x00U;
|
/* The Lock is not implemented on this API to allow the user application
|
to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback():
|
when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
|
and the correspond call back is executed HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback()
|
*/
|
|
/* Stop UART DMA Tx request if ongoing */
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
|
if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
/* Abort the UART DMA Tx channel */
|
if (huart->hdmatx != NULL)
|
{
|
HAL_DMA_Abort(huart->hdmatx);
|
}
|
UART_EndTxTransfer(huart);
|
}
|
|
/* Stop UART DMA Rx request if ongoing */
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* Abort the UART DMA Rx channel */
|
if (huart->hdmarx != NULL)
|
{
|
HAL_DMA_Abort(huart->hdmarx);
|
}
|
UART_EndRxTransfer(huart);
|
}
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Abort ongoing transfers (blocking mode).
|
* @param huart UART handle.
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
* This procedure performs following operations :
|
* - Disable UART Interrupts (Tx and Rx)
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
* - Set handle State to READY
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
|
{
|
/* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Disable the UART DMA Tx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
/* Abort the UART DMA Tx channel: use blocking DMA Abort API (no callback) */
|
if (huart->hdmatx != NULL)
|
{
|
/* Set the UART DMA Abort callback to Null.
|
No call back execution at end of DMA abort procedure */
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
|
{
|
if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
|
{
|
/* Set error code to DMA */
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
return HAL_TIMEOUT;
|
}
|
}
|
}
|
}
|
|
/* Disable the UART DMA Rx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* Abort the UART DMA Rx channel: use blocking DMA Abort API (no callback) */
|
if (huart->hdmarx != NULL)
|
{
|
/* Set the UART DMA Abort callback to Null.
|
No call back execution at end of DMA abort procedure */
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
|
{
|
if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
|
{
|
/* Set error code to DMA */
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
return HAL_TIMEOUT;
|
}
|
}
|
}
|
}
|
|
/* Reset Tx and Rx transfer counters */
|
huart->TxXferCount = 0x00U;
|
huart->RxXferCount = 0x00U;
|
|
/* Reset ErrorCode */
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
/* Restore huart->RxState and huart->gState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
huart->gState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Abort ongoing Transmit transfer (blocking mode).
|
* @param huart UART handle.
|
* @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
|
* This procedure performs following operations :
|
* - Disable UART Interrupts (Tx)
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
* - Set handle State to READY
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
|
{
|
/* Disable TXEIE and TCIE interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
/* Disable the UART DMA Tx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
/* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
|
if (huart->hdmatx != NULL)
|
{
|
/* Set the UART DMA Abort callback to Null.
|
No call back execution at end of DMA abort procedure */
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
|
{
|
if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
|
{
|
/* Set error code to DMA */
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
return HAL_TIMEOUT;
|
}
|
}
|
}
|
}
|
|
/* Reset Tx transfer counter */
|
huart->TxXferCount = 0x00U;
|
|
/* Restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Abort ongoing Receive transfer (blocking mode).
|
* @param huart UART handle.
|
* @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
|
* This procedure performs following operations :
|
* - Disable UART Interrupts (Rx)
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
* - Set handle State to READY
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart)
|
{
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Disable the UART DMA Rx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
|
if (huart->hdmarx != NULL)
|
{
|
/* Set the UART DMA Abort callback to Null.
|
No call back execution at end of DMA abort procedure */
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
|
{
|
if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
|
{
|
/* Set error code to DMA */
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
return HAL_TIMEOUT;
|
}
|
}
|
}
|
}
|
|
/* Reset Rx transfer counter */
|
huart->RxXferCount = 0x00U;
|
|
/* Restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Abort ongoing transfers (Interrupt mode).
|
* @param huart UART handle.
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
* This procedure performs following operations :
|
* - Disable UART Interrupts (Tx and Rx)
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
* - Set handle State to READY
|
* - At abort completion, call user abort complete callback
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
|
{
|
uint32_t AbortCplt = 0x01U;
|
|
/* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
|
before any call to DMA Abort functions */
|
/* DMA Tx Handle is valid */
|
if (huart->hdmatx != NULL)
|
{
|
/* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
|
Otherwise, set it to NULL */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
{
|
huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
|
}
|
else
|
{
|
huart->hdmatx->XferAbortCallback = NULL;
|
}
|
}
|
/* DMA Rx Handle is valid */
|
if (huart->hdmarx != NULL)
|
{
|
/* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
|
Otherwise, set it to NULL */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
{
|
huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
|
}
|
else
|
{
|
huart->hdmarx->XferAbortCallback = NULL;
|
}
|
}
|
|
/* Disable the UART DMA Tx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
{
|
/* Disable DMA Tx at UART level */
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
/* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
|
if (huart->hdmatx != NULL)
|
{
|
/* UART Tx DMA Abort callback has already been initialised :
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
|
/* Abort DMA TX */
|
if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
|
{
|
huart->hdmatx->XferAbortCallback = NULL;
|
}
|
else
|
{
|
AbortCplt = 0x00U;
|
}
|
}
|
}
|
|
/* Disable the UART DMA Rx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
|
if (huart->hdmarx != NULL)
|
{
|
/* UART Rx DMA Abort callback has already been initialised :
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
|
/* Abort DMA RX */
|
if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
|
{
|
huart->hdmarx->XferAbortCallback = NULL;
|
AbortCplt = 0x01U;
|
}
|
else
|
{
|
AbortCplt = 0x00U;
|
}
|
}
|
}
|
|
/* if no DMA abort complete callback execution is required => call user Abort Complete callback */
|
if (AbortCplt == 0x01U)
|
{
|
/* Reset Tx and Rx transfer counters */
|
huart->TxXferCount = 0x00U;
|
huart->RxXferCount = 0x00U;
|
|
/* Reset ErrorCode */
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
/* Restore huart->gState and huart->RxState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort complete callback */
|
huart->AbortCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort complete callback */
|
HAL_UART_AbortCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Abort ongoing Transmit transfer (Interrupt mode).
|
* @param huart UART handle.
|
* @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
|
* This procedure performs following operations :
|
* - Disable UART Interrupts (Tx)
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
* - Set handle State to READY
|
* - At abort completion, call user abort complete callback
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart)
|
{
|
/* Disable TXEIE and TCIE interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
/* Disable the UART DMA Tx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
/* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
|
if (huart->hdmatx != NULL)
|
{
|
/* Set the UART DMA Abort callback :
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
|
|
/* Abort DMA TX */
|
if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
|
{
|
/* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
|
huart->hdmatx->XferAbortCallback(huart->hdmatx);
|
}
|
}
|
else
|
{
|
/* Reset Tx transfer counter */
|
huart->TxXferCount = 0x00U;
|
|
/* Restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort Transmit Complete Callback */
|
huart->AbortTransmitCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort Transmit Complete Callback */
|
HAL_UART_AbortTransmitCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
}
|
else
|
{
|
/* Reset Tx transfer counter */
|
huart->TxXferCount = 0x00U;
|
|
/* Restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort Transmit Complete Callback */
|
huart->AbortTransmitCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort Transmit Complete Callback */
|
HAL_UART_AbortTransmitCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Abort ongoing Receive transfer (Interrupt mode).
|
* @param huart UART handle.
|
* @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
|
* This procedure performs following operations :
|
* - Disable UART Interrupts (Rx)
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
* - Set handle State to READY
|
* - At abort completion, call user abort complete callback
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart)
|
{
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Disable the UART DMA Rx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
|
if (huart->hdmarx != NULL)
|
{
|
/* Set the UART DMA Abort callback :
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
|
|
/* Abort DMA RX */
|
if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
|
{
|
/* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
|
huart->hdmarx->XferAbortCallback(huart->hdmarx);
|
}
|
}
|
else
|
{
|
/* Reset Rx transfer counter */
|
huart->RxXferCount = 0x00U;
|
|
/* Restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort Receive Complete Callback */
|
huart->AbortReceiveCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort Receive Complete Callback */
|
HAL_UART_AbortReceiveCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
}
|
else
|
{
|
/* Reset Rx transfer counter */
|
huart->RxXferCount = 0x00U;
|
|
/* Restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort Receive Complete Callback */
|
huart->AbortReceiveCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort Receive Complete Callback */
|
HAL_UART_AbortReceiveCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief This function handles UART interrupt request.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
|
{
|
uint32_t isrflags = READ_REG(huart->Instance->SR);
|
uint32_t cr1its = READ_REG(huart->Instance->CR1);
|
uint32_t cr3its = READ_REG(huart->Instance->CR3);
|
uint32_t errorflags = 0x00U;
|
uint32_t dmarequest = 0x00U;
|
|
/* If no error occurs */
|
errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));
|
if (errorflags == RESET)
|
{
|
/* UART in mode Receiver -------------------------------------------------*/
|
if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
|
{
|
UART_Receive_IT(huart);
|
return;
|
}
|
}
|
|
/* If some errors occur */
|
if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
|
{
|
/* UART parity error interrupt occurred ----------------------------------*/
|
if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
|
{
|
huart->ErrorCode |= HAL_UART_ERROR_PE;
|
}
|
|
/* UART noise error interrupt occurred -----------------------------------*/
|
if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
|
{
|
huart->ErrorCode |= HAL_UART_ERROR_NE;
|
}
|
|
/* UART frame error interrupt occurred -----------------------------------*/
|
if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
|
{
|
huart->ErrorCode |= HAL_UART_ERROR_FE;
|
}
|
|
/* UART Over-Run interrupt occurred --------------------------------------*/
|
if (((isrflags & USART_SR_ORE) != RESET) && (((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET)))
|
{
|
huart->ErrorCode |= HAL_UART_ERROR_ORE;
|
}
|
|
/* Call UART Error Call back function if need be --------------------------*/
|
if (huart->ErrorCode != HAL_UART_ERROR_NONE)
|
{
|
/* UART in mode Receiver -----------------------------------------------*/
|
if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
|
{
|
UART_Receive_IT(huart);
|
}
|
|
/* If Overrun error occurs, or if any error occurs in DMA mode reception,
|
consider error as blocking */
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) || dmarequest)
|
{
|
/* Blocking error : transfer is aborted
|
Set the UART state ready to be able to start again the process,
|
Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
|
UART_EndRxTransfer(huart);
|
|
/* Disable the UART DMA Rx request if enabled */
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
{
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* Abort the UART DMA Rx channel */
|
if (huart->hdmarx != NULL)
|
{
|
/* Set the UART DMA Abort callback :
|
will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
|
huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
|
if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
|
{
|
/* Call Directly XferAbortCallback function in case of error */
|
huart->hdmarx->XferAbortCallback(huart->hdmarx);
|
}
|
}
|
else
|
{
|
/* Call user error callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered error callback*/
|
huart->ErrorCallback(huart);
|
#else
|
/*Call legacy weak error callback*/
|
HAL_UART_ErrorCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
}
|
else
|
{
|
/* Call user error callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered error callback*/
|
huart->ErrorCallback(huart);
|
#else
|
/*Call legacy weak error callback*/
|
HAL_UART_ErrorCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
}
|
else
|
{
|
/* Non Blocking error : transfer could go on.
|
Error is notified to user through user error callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered error callback*/
|
huart->ErrorCallback(huart);
|
#else
|
/*Call legacy weak error callback*/
|
HAL_UART_ErrorCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
}
|
}
|
return;
|
} /* End if some error occurs */
|
|
/* UART in mode Transmitter ------------------------------------------------*/
|
if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
|
{
|
UART_Transmit_IT(huart);
|
return;
|
}
|
|
/* UART in mode Transmitter end --------------------------------------------*/
|
if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
|
{
|
UART_EndTransmit_IT(huart);
|
return;
|
}
|
}
|
|
/**
|
* @brief Tx Transfer completed callbacks.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_TxCpltCallback could be implemented in the user file
|
*/
|
}
|
|
/**
|
* @brief Tx Half Transfer completed callbacks.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_TxHalfCpltCallback could be implemented in the user file
|
*/
|
}
|
|
/**
|
* @brief Rx Transfer completed callbacks.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_RxCpltCallback could be implemented in the user file
|
*/
|
}
|
|
/**
|
* @brief Rx Half Transfer completed callbacks.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_RxHalfCpltCallback could be implemented in the user file
|
*/
|
}
|
|
/**
|
* @brief UART error callbacks.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
/* NOTE: This function should not be modified, when the callback is needed,
|
the HAL_UART_ErrorCallback could be implemented in the user file
|
*/
|
}
|
|
/**
|
* @brief UART Abort Complete callback.
|
* @param huart UART handle.
|
* @retval None
|
*/
|
__weak void HAL_UART_AbortCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
the HAL_UART_AbortCpltCallback can be implemented in the user file.
|
*/
|
}
|
|
/**
|
* @brief UART Abort Complete callback.
|
* @param huart UART handle.
|
* @retval None
|
*/
|
__weak void HAL_UART_AbortTransmitCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file.
|
*/
|
}
|
|
/**
|
* @brief UART Abort Receive Complete callback.
|
* @param huart UART handle.
|
* @retval None
|
*/
|
__weak void HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef *huart)
|
{
|
/* Prevent unused argument(s) compilation warning */
|
UNUSED(huart);
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
the HAL_UART_AbortReceiveCpltCallback can be implemented in the user file.
|
*/
|
}
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
|
* @brief UART control functions
|
*
|
@verbatim
|
==============================================================================
|
##### Peripheral Control functions #####
|
==============================================================================
|
[..]
|
This subsection provides a set of functions allowing to control the UART:
|
(+) HAL_LIN_SendBreak() API can be helpful to transmit the break character.
|
(+) HAL_MultiProcessor_EnterMuteMode() API can be helpful to enter the UART in mute mode.
|
(+) HAL_MultiProcessor_ExitMuteMode() API can be helpful to exit the UART mute mode by software.
|
(+) HAL_HalfDuplex_EnableTransmitter() API to enable the UART transmitter and disables the UART receiver in Half Duplex mode
|
(+) HAL_HalfDuplex_EnableReceiver() API to enable the UART receiver and disables the UART transmitter in Half Duplex mode
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Transmits break characters.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
|
{
|
/* Check the parameters */
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Send break characters */
|
SET_BIT(huart->Instance->CR1, USART_CR1_SBK);
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Enters the UART in mute mode.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
|
{
|
/* Check the parameters */
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Enable the USART mute mode by setting the RWU bit in the CR1 register */
|
SET_BIT(huart->Instance->CR1, USART_CR1_RWU);
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Exits the UART mute mode: wake up software.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart)
|
{
|
/* Check the parameters */
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/* Disable the USART mute mode by clearing the RWU bit in the CR1 register */
|
CLEAR_BIT(huart->Instance->CR1, USART_CR1_RWU);
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Enables the UART transmitter and disables the UART receiver.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
|
{
|
uint32_t tmpreg = 0x00U;
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
tmpreg = huart->Instance->CR1;
|
|
/* Clear TE and RE bits */
|
tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
|
/* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
|
tmpreg |= (uint32_t)USART_CR1_TE;
|
|
/* Write to USART CR1 */
|
WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg);
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Enables the UART receiver and disables the UART transmitter.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
|
{
|
uint32_t tmpreg = 0x00U;
|
|
/* Process Locked */
|
__HAL_LOCK(huart);
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
tmpreg = huart->Instance->CR1;
|
|
/* Clear TE and RE bits */
|
tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
|
/* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
|
tmpreg |= (uint32_t)USART_CR1_RE;
|
|
/* Write to USART CR1 */
|
WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg);
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_OK;
|
}
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup UART_Exported_Functions_Group4 Peripheral State and Errors functions
|
* @brief UART State and Errors functions
|
*
|
@verbatim
|
==============================================================================
|
##### Peripheral State and Errors functions #####
|
==============================================================================
|
[..]
|
This subsection provides a set of functions allowing to return the State of
|
UART communication process, return Peripheral Errors occurred during communication
|
process
|
(+) HAL_UART_GetState() API can be helpful to check in run-time the state of the UART peripheral.
|
(+) HAL_UART_GetError() check in run-time errors that could be occurred during communication.
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Returns the UART state.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL state
|
*/
|
HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
|
{
|
uint32_t temp1 = 0x00U, temp2 = 0x00U;
|
temp1 = huart->gState;
|
temp2 = huart->RxState;
|
|
return (HAL_UART_StateTypeDef)(temp1 | temp2);
|
}
|
|
/**
|
* @brief Return the UART error code
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART.
|
* @retval UART Error Code
|
*/
|
uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
|
{
|
return huart->ErrorCode;
|
}
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup UART_Private_Functions UART Private Functions
|
* @{
|
*/
|
|
/**
|
* @brief Initialize the callbacks to their default values.
|
* @param huart UART handle.
|
* @retval none
|
*/
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart)
|
{
|
/* Init the UART Callback settings */
|
huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
|
huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */
|
huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
|
huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */
|
huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */
|
huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
|
huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
|
huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */
|
|
}
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
/**
|
* @brief DMA UART transmit process complete callback.
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
/* DMA Normal mode*/
|
if ((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
|
{
|
huart->TxXferCount = 0x00U;
|
|
/* Disable the DMA transfer for transmit request by setting the DMAT bit
|
in the UART CR3 register */
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
/* Enable the UART Transmit Complete Interrupt */
|
SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
|
|
}
|
/* DMA Circular mode */
|
else
|
{
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered Tx complete callback*/
|
huart->TxCpltCallback(huart);
|
#else
|
/*Call legacy weak Tx complete callback*/
|
HAL_UART_TxCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
}
|
|
/**
|
* @brief DMA UART transmit process half complete callback
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered Tx complete callback*/
|
huart->TxHalfCpltCallback(huart);
|
#else
|
/*Call legacy weak Tx complete callback*/
|
HAL_UART_TxHalfCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART receive process complete callback.
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
/* DMA Normal mode*/
|
if ((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
|
{
|
huart->RxXferCount = 0U;
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* Disable the DMA transfer for the receiver request by setting the DMAR bit
|
in the UART CR3 register */
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
}
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered Rx complete callback*/
|
huart->RxCpltCallback(huart);
|
#else
|
/*Call legacy weak Rx complete callback*/
|
HAL_UART_RxCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART receive process half complete callback
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered Rx Half complete callback*/
|
huart->RxHalfCpltCallback(huart);
|
#else
|
/*Call legacy weak Rx Half complete callback*/
|
HAL_UART_RxHalfCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART communication error callback.
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMAError(DMA_HandleTypeDef *hdma)
|
{
|
uint32_t dmarequest = 0x00U;
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
/* Stop UART DMA Tx request if ongoing */
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
|
if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
|
{
|
huart->TxXferCount = 0x00U;
|
UART_EndTxTransfer(huart);
|
}
|
|
/* Stop UART DMA Rx request if ongoing */
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
|
{
|
huart->RxXferCount = 0x00U;
|
UART_EndRxTransfer(huart);
|
}
|
|
huart->ErrorCode |= HAL_UART_ERROR_DMA;
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered error callback*/
|
huart->ErrorCallback(huart);
|
#else
|
/*Call legacy weak error callback*/
|
HAL_UART_ErrorCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief This function handles UART Communication Timeout.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @param Flag specifies the UART flag to check.
|
* @param Status The new Flag status (SET or RESET).
|
* @param Tickstart Tick start value
|
* @param Timeout Timeout duration
|
* @retval HAL status
|
*/
|
static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
|
{
|
/* Wait until flag is set */
|
while ((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)
|
{
|
/* Check for the Timeout */
|
if (Timeout != HAL_MAX_DELAY)
|
{
|
if ((Timeout == 0U) || ((HAL_GetTick() - Tickstart) > Timeout))
|
{
|
/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* Process Unlocked */
|
__HAL_UNLOCK(huart);
|
|
return HAL_TIMEOUT;
|
}
|
}
|
}
|
return HAL_OK;
|
}
|
|
/**
|
* @brief End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion).
|
* @param huart UART handle.
|
* @retval None
|
*/
|
static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
|
{
|
/* Disable TXEIE and TCIE interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
/* At end of Tx process, restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
}
|
|
/**
|
* @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion).
|
* @param huart UART handle.
|
* @retval None
|
*/
|
static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
|
{
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
}
|
|
/**
|
* @brief DMA UART communication abort callback, when initiated by HAL services on Error
|
* (To be called at end of DMA Abort procedure following error occurrence).
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
huart->RxXferCount = 0x00U;
|
huart->TxXferCount = 0x00U;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered error callback*/
|
huart->ErrorCallback(huart);
|
#else
|
/*Call legacy weak error callback*/
|
HAL_UART_ErrorCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART Tx communication abort callback, when initiated by user
|
* (To be called at end of DMA Tx Abort procedure following user abort request).
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
* Abort still ongoing for Rx DMA Handle.
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
/* Check if an Abort process is still ongoing */
|
if (huart->hdmarx != NULL)
|
{
|
if (huart->hdmarx->XferAbortCallback != NULL)
|
{
|
return;
|
}
|
}
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
huart->TxXferCount = 0x00U;
|
huart->RxXferCount = 0x00U;
|
|
/* Reset ErrorCode */
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
/* Restore huart->gState and huart->RxState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* Call user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort complete callback */
|
huart->AbortCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort complete callback */
|
HAL_UART_AbortCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART Rx communication abort callback, when initiated by user
|
* (To be called at end of DMA Rx Abort procedure following user abort request).
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
* Abort still ongoing for Tx DMA Handle.
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
/* Check if an Abort process is still ongoing */
|
if (huart->hdmatx != NULL)
|
{
|
if (huart->hdmatx->XferAbortCallback != NULL)
|
{
|
return;
|
}
|
}
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
huart->TxXferCount = 0x00U;
|
huart->RxXferCount = 0x00U;
|
|
/* Reset ErrorCode */
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
/* Restore huart->gState and huart->RxState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* Call user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort complete callback */
|
huart->AbortCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort complete callback */
|
HAL_UART_AbortCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART Tx communication abort callback, when initiated by user by a call to
|
* HAL_UART_AbortTransmit_IT API (Abort only Tx transfer)
|
* (This callback is executed at end of DMA Tx Abort procedure following user abort request,
|
* and leads to user Tx Abort Complete callback execution).
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
huart->TxXferCount = 0x00U;
|
|
/* Restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
|
/* Call user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort Transmit Complete Callback */
|
huart->AbortTransmitCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort Transmit Complete Callback */
|
HAL_UART_AbortTransmitCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief DMA UART Rx communication abort callback, when initiated by user by a call to
|
* HAL_UART_AbortReceive_IT API (Abort only Rx transfer)
|
* (This callback is executed at end of DMA Rx Abort procedure following user abort request,
|
* and leads to user Rx Abort Complete callback execution).
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
* the configuration information for the specified DMA module.
|
* @retval None
|
*/
|
static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
|
{
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
huart->RxXferCount = 0x00U;
|
|
/* Restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
|
/* Call user Abort complete callback */
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/* Call registered Abort Receive Complete Callback */
|
huart->AbortReceiveCpltCallback(huart);
|
#else
|
/* Call legacy weak Abort Receive Complete Callback */
|
HAL_UART_AbortReceiveCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
}
|
|
/**
|
* @brief Sends an amount of data in non blocking mode.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
|
{
|
uint16_t *tmp;
|
|
/* Check that a Tx process is ongoing */
|
if (huart->gState == HAL_UART_STATE_BUSY_TX)
|
{
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
{
|
tmp = (uint16_t *) huart->pTxBuffPtr;
|
huart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
|
huart->pTxBuffPtr += 2U;
|
}
|
else
|
{
|
huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF);
|
}
|
|
if (--huart->TxXferCount == 0U)
|
{
|
/* Disable the UART Transmit Complete Interrupt */
|
__HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
|
|
/* Enable the UART Transmit Complete Interrupt */
|
__HAL_UART_ENABLE_IT(huart, UART_IT_TC);
|
}
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Wraps up transmission in non blocking mode.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
|
{
|
/* Disable the UART Transmit Complete Interrupt */
|
__HAL_UART_DISABLE_IT(huart, UART_IT_TC);
|
|
/* Tx process is ended, restore huart->gState to Ready */
|
huart->gState = HAL_UART_STATE_READY;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered Tx complete callback*/
|
huart->TxCpltCallback(huart);
|
#else
|
/*Call legacy weak Tx complete callback*/
|
HAL_UART_TxCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
return HAL_OK;
|
}
|
|
/**
|
* @brief Receives an amount of data in non blocking mode
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval HAL status
|
*/
|
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
|
{
|
uint8_t *pdata8bits;
|
uint16_t *pdata16bits;
|
|
/* Check that a Rx process is ongoing */
|
if (huart->RxState == HAL_UART_STATE_BUSY_RX)
|
{
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
{
|
pdata8bits = NULL;
|
pdata16bits = (uint16_t *) huart->pRxBuffPtr;
|
*pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
|
huart->pRxBuffPtr += 2U;
|
}
|
else
|
{
|
pdata8bits = (uint8_t *) huart->pRxBuffPtr;
|
pdata16bits = NULL;
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
|
{
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
}
|
else
|
{
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
}
|
huart->pRxBuffPtr += 1U;
|
}
|
|
if (--huart->RxXferCount == 0U)
|
{
|
/* Disable the UART Data Register not empty Interrupt */
|
__HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
|
|
/* Disable the UART Parity Error Interrupt */
|
__HAL_UART_DISABLE_IT(huart, UART_IT_PE);
|
|
/* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
|
|
/* Rx process is completed, restore huart->RxState to Ready */
|
huart->RxState = HAL_UART_STATE_READY;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
/*Call registered Rx complete callback*/
|
huart->RxCpltCallback(huart);
|
#else
|
/*Call legacy weak Rx complete callback*/
|
HAL_UART_RxCpltCallback(huart);
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
return HAL_OK;
|
}
|
return HAL_OK;
|
}
|
else
|
{
|
return HAL_BUSY;
|
}
|
}
|
|
/**
|
* @brief Configures the UART peripheral.
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
* the configuration information for the specified UART module.
|
* @retval None
|
*/
|
static void UART_SetConfig(UART_HandleTypeDef *huart)
|
{
|
uint32_t tmpreg;
|
uint32_t pclk;
|
|
/* Check the parameters */
|
assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
|
assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
|
assert_param(IS_UART_PARITY(huart->Init.Parity));
|
assert_param(IS_UART_MODE(huart->Init.Mode));
|
|
/*-------------------------- USART CR2 Configuration -----------------------*/
|
/* Configure the UART Stop Bits: Set STOP[13:12] bits
|
according to huart->Init.StopBits value */
|
MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
/* Configure the UART Word Length, Parity and mode:
|
Set the M bits according to huart->Init.WordLength value
|
Set PCE and PS bits according to huart->Init.Parity value
|
Set TE and RE bits according to huart->Init.Mode value
|
Set OVER8 bit according to huart->Init.OverSampling value */
|
|
#if defined(USART_CR1_OVER8)
|
tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling;
|
MODIFY_REG(huart->Instance->CR1,
|
(uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8),
|
tmpreg);
|
#else
|
tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode;
|
MODIFY_REG(huart->Instance->CR1,
|
(uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE),
|
tmpreg);
|
#endif /* USART_CR1_OVER8 */
|
|
/*-------------------------- USART CR3 Configuration -----------------------*/
|
/* Configure the UART HFC: Set CTSE and RTSE bits according to huart->Init.HwFlowCtl value */
|
MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE), huart->Init.HwFlowCtl);
|
|
|
if(huart->Instance == USART1)
|
{
|
pclk = HAL_RCC_GetPCLK2Freq();
|
}
|
else
|
{
|
pclk = HAL_RCC_GetPCLK1Freq();
|
}
|
|
/*-------------------------- USART BRR Configuration ---------------------*/
|
#if defined(USART_CR1_OVER8)
|
if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
|
{
|
huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
|
}
|
else
|
{
|
huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
|
}
|
#else
|
huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
|
#endif /* USART_CR1_OVER8 */
|
}
|
|
/**
|
* @}
|
*/
|
|
#endif /* HAL_UART_MODULE_ENABLED */
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
