From 84324a933cbf69838a284f824ef7d543c5f775d5 Mon Sep 17 00:00:00 2001
From: Wenxue <wenxue.guo@avnet.com>
Date: Tue, 02 Sep 2025 09:53:22 +0800
Subject: [PATCH] HAL库I2C实现SHT20
---
Core/Inc/stm32l4xx_hal_conf.h | 2
ISKBoard.ioc | 31
Core/Src/i2c.c | 140 +++
Core/Src/board/sht20.c | 203 ++++
Core/Src/main.c | 14
Core/Src/board/sht20.h | 20
Drivers/STM32L4xx_HAL_Driver/Inc/stm32l4xx_ll_i2c.h | 2279 +++++++++++++++++++++++++++++++++++++++++++++++++
Core/Inc/i2c.h | 52 +
8 files changed, 2,723 insertions(+), 18 deletions(-)
diff --git a/Core/Inc/i2c.h b/Core/Inc/i2c.h
new file mode 100644
index 0000000..e5f10f5
--- /dev/null
+++ b/Core/Inc/i2c.h
@@ -0,0 +1,52 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file i2c.h
+ * @brief This file contains all the function prototypes for
+ * the i2c.c file
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2025 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __I2C_H__
+#define __I2C_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern I2C_HandleTypeDef hi2c1;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_I2C1_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __I2C_H__ */
+
diff --git a/Core/Inc/stm32l4xx_hal_conf.h b/Core/Inc/stm32l4xx_hal_conf.h
index a8c2870..779c90a 100644
--- a/Core/Inc/stm32l4xx_hal_conf.h
+++ b/Core/Inc/stm32l4xx_hal_conf.h
@@ -40,7 +40,7 @@
/*#define HAL_CRYP_MODULE_ENABLED */
/*#define HAL_CAN_MODULE_ENABLED */
/*#define HAL_COMP_MODULE_ENABLED */
-/*#define HAL_I2C_MODULE_ENABLED */
+#define HAL_I2C_MODULE_ENABLED
/*#define HAL_CRC_MODULE_ENABLED */
/*#define HAL_CRYP_MODULE_ENABLED */
/*#define HAL_DAC_MODULE_ENABLED */
diff --git a/Core/Src/board/sht20.c b/Core/Src/board/sht20.c
new file mode 100644
index 0000000..2d279e6
--- /dev/null
+++ b/Core/Src/board/sht20.c
@@ -0,0 +1,203 @@
+/**********************************************************************
+ * Copyright: (C)2024 LingYun IoT System Studio
+ * Author: GuoWenxue<guowenxue@gmail.com>
+ *
+ * Description: Temperature and humidity sensor SHT20 driver on ISKBoard
+ *
+ * ChangeLog:
+ * Version Date Author Description
+ * V1.0.0 2024.08.29 GuoWenxue Release initial version
+ *
+ ***********************************************************************/
+#include <stdio.h>
+#include <string.h>
+#include "i2c.h"
+#include "sht20.h"
+
+#define CONFIG_DEBUG_SHT2X /* Enable SHT20 debug */
+
+#define SHT2X_CHIPADDR 0x40 /* SHT20 7-Bits Chip address */
+
+
+#ifdef CONFIG_DEBUG_SHT2X
+#define sht2x_print(format,args...) printf(format, ##args)
+#else
+#define sht2x_print(format,args...) do{} while(0);
+#endif
+
+#ifdef CONFIG_DEBUG_SHT2X
+static inline void dump_buf(uint8_t *buf, uint32_t size)
+{
+ int i;
+
+ if(!buf)
+ return ;
+
+ for(i=0; i<size; i++)
+ printf("%02x ", buf[i]);
+
+ printf("\r\n");
+}
+#endif
+
+
+enum
+{
+ TRIG_T_MEASUREMENT_HM = 0xE3, // command trig. temp meas. hold master
+ TRIG_RH_MEASUREMENT_HM = 0xE5, // command trig. humidity meas. hold master
+ TRIG_T_MEASUREMENT_POLL = 0xF3, // command trig. temp meas. no hold master
+ TRIG_RH_MEASUREMENT_POLL = 0xF5, // command trig. humidity meas. no hold master
+ USER_REG_W = 0xE6, // command writing user register
+ USER_REG_R = 0xE7, // command reading user register
+ SOFT_RESET = 0xFE // command soft reset
+};
+
+static int sht2x_measure_value(uint8_t command, uint16_t *val);
+static int sht2x_softreset(void);
+
+int sht20_sample_TrH(float *temperature, float *humdity)
+{
+ uint16_t raw_temp, raw_rh;
+ float temp, rh;
+ int rv;
+
+ if( sht2x_softreset() < 0 )
+ {
+ sht2x_print("SHT20 soft reset failed.\r\n");
+ goto OUT;
+ }
+
+ sht2x_print("Start to measurement temperature...\r\n");
+ rv=sht2x_measure_value(TRIG_T_MEASUREMENT_POLL, &raw_temp);
+ if( rv < 0 )
+ {
+ sht2x_print("I2C measurement temperature failed, rv=%d\r\n", rv);
+ goto OUT;
+ }
+
+ temp = -46.85f + 175.72f * (float)raw_temp / 65536.0f;
+ sht2x_print("Measure temperature: %.2f\r\n", temp);
+ if( temperature )
+ *temperature=temp;
+
+ sht2x_print("Start to measurement relative humidity...\r\n");
+ rv = sht2x_measure_value(TRIG_RH_MEASUREMENT_POLL, &raw_rh);
+ if( rv < 0 )
+ {
+ sht2x_print("I2C measurement humidity failed, rv=%d\r\n", rv);
+ goto OUT;
+ }
+
+ rh = -6.0f + 125.0f * (float)raw_rh / 65536.0f;
+ sht2x_print("Measure relative humidity: %.1f%%\r\n", rh);
+ if( humdity )
+ *humdity=rh;
+
+OUT:
+ return rv;
+}
+
+int sht2x_softreset(void)
+{
+ uint8_t command = SOFT_RESET;
+ int rv = 0;
+
+ sht2x_print("Start soft reset sht2x\r\n");
+
+ rv=HAL_I2C_Master_Transmit(&hi2c1, SHT2X_CHIPADDR<<1, &command, 1, 0xFFFFFFFF);
+ if( rv != HAL_OK )
+ {
+ sht2x_print("SHT2X send soft reset command 0x%0x failure: rv=0x%02x\r\n", command, rv);
+ return -rv;
+ }
+
+ HAL_Delay(15);
+ return 0;
+}
+
+static int sht2x_checkcrc(uint8_t *data, uint8_t bytes, uint8_t checksum)
+{
+ uint8_t crc = 0;
+ uint8_t i;
+ uint8_t bit;
+
+ //calculates 8-Bit checksum with given polynomial
+ for (i=0; i<bytes; ++i)
+ {
+ crc ^= (data[i]);
+ for (bit=8; bit>0; --bit)
+ {
+ if (crc & 0x80)
+ crc = (crc << 1) ^ 0x0131; //POLYNOMIAL;
+ else
+ crc = (crc << 1);
+ }
+ }
+
+ if (crc != checksum)
+ {
+ return -1;
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+static int sht2x_measure_value(uint8_t command, uint16_t *val)
+{
+ uint8_t buf[3]; /* I2C receive buffer */
+ int count=4; /* I2C read retry times */
+
+ if( !val )
+ {
+ sht2x_print("SHT2X invalid input arguments\r\n");
+ return -1;
+ }
+
+ if(TRIG_T_MEASUREMENT_POLL!=command && TRIG_RH_MEASUREMENT_POLL !=command )
+ {
+ sht2x_print("SHT2X unsupport command: 0x%0x\r\n", command);
+ return -2;
+ }
+
+ if( HAL_I2C_Master_Transmit(&hi2c1, SHT2X_CHIPADDR<<1, &command, 1, 0xFFFFFFFF) != HAL_OK )
+ {
+ sht2x_print("SHT2X send measure command 0x%0x failure\r\n", command);
+ return -3;
+ }
+
+ if(TRIG_T_MEASUREMENT_POLL == command)
+ HAL_Delay(85);
+ else
+ HAL_Delay(29);
+
+ while(count--)
+ {
+ memset(buf, 0, 3);
+
+ if( HAL_OK == HAL_I2C_Master_Receive(&hi2c1, SHT2X_CHIPADDR<<1|1, buf, 3, 0xFFFFFFFF) )
+ {
+ break;
+ }
+ HAL_Delay(5);
+ }
+
+ if( sht2x_checkcrc(buf, 2, buf[2])< 0 )
+ {
+#ifdef CONFIG_DEBUG_SHT2X
+ sht2x_print("Measurement data checksum failure:\r\n");
+ dump_buf(buf, 3);
+#endif
+ return -4;
+ }
+
+ if(TRIG_T_MEASUREMENT_POLL == command)
+ *val = buf[0]<<8|(buf[1]&0xFC); //14bits(1111 1100)
+ else
+ *val = buf[0]<<8|(buf[1]&0xF0); //12bits(1111 0000)
+
+ sht2x_print("Measurement temperature value: 0x%04x\r\n", *val);
+
+ return 0;
+}
diff --git a/Core/Src/board/sht20.h b/Core/Src/board/sht20.h
new file mode 100644
index 0000000..021ef4d
--- /dev/null
+++ b/Core/Src/board/sht20.h
@@ -0,0 +1,20 @@
+/**********************************************************************
+ * Copyright: (C)2024 LingYun IoT System Studio
+ * Author: GuoWenxue<guowenxue@gmail.com>
+ *
+ * Description: Temperature and humidity sensor SHT20 driver on ISKBoard
+ *
+ * ChangeLog:
+ * Version Date Author Description
+ * V1.0.0 2024.08.29 GuoWenxue Release initial version
+ *
+ ***********************************************************************/
+#ifndef __SHT20_H_
+#define __SHT20_H_
+
+#include <sys/types.h>
+#include <stdint.h>
+
+extern int sht20_sample_TrH(float *temperature, float *humdity);
+
+#endif /* __SHT20_H_ */
diff --git a/Core/Src/i2c.c b/Core/Src/i2c.c
new file mode 100644
index 0000000..47f913a
--- /dev/null
+++ b/Core/Src/i2c.c
@@ -0,0 +1,140 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file i2c.c
+ * @brief This file provides code for the configuration
+ * of the I2C instances.
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2025 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "i2c.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+I2C_HandleTypeDef hi2c1;
+
+/* I2C1 init function */
+void MX_I2C1_Init(void)
+{
+
+ /* USER CODE BEGIN I2C1_Init 0 */
+
+ /* USER CODE END I2C1_Init 0 */
+
+ /* USER CODE BEGIN I2C1_Init 1 */
+
+ /* USER CODE END I2C1_Init 1 */
+ hi2c1.Instance = I2C1;
+ hi2c1.Init.Timing = 0x10D19CE4;
+ hi2c1.Init.OwnAddress1 = 0;
+ hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+ hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+ hi2c1.Init.OwnAddress2 = 0;
+ hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
+ hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+ hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+ if (HAL_I2C_Init(&hi2c1) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ /** Configure Analogue filter
+ */
+ if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ /** Configure Digital filter
+ */
+ if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ /* USER CODE BEGIN I2C1_Init 2 */
+
+ /* USER CODE END I2C1_Init 2 */
+
+}
+
+void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
+{
+
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+ RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
+ if(i2cHandle->Instance==I2C1)
+ {
+ /* USER CODE BEGIN I2C1_MspInit 0 */
+
+ /* USER CODE END I2C1_MspInit 0 */
+
+ /** Initializes the peripherals clock
+ */
+ PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
+ PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
+ if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ __HAL_RCC_GPIOB_CLK_ENABLE();
+ /**I2C1 GPIO Configuration
+ PB6 ------> I2C1_SCL
+ PB7 ------> I2C1_SDA
+ */
+ GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
+ HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+ /* I2C1 clock enable */
+ __HAL_RCC_I2C1_CLK_ENABLE();
+ /* USER CODE BEGIN I2C1_MspInit 1 */
+
+ /* USER CODE END I2C1_MspInit 1 */
+ }
+}
+
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
+{
+
+ if(i2cHandle->Instance==I2C1)
+ {
+ /* USER CODE BEGIN I2C1_MspDeInit 0 */
+
+ /* USER CODE END I2C1_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_I2C1_CLK_DISABLE();
+
+ /**I2C1 GPIO Configuration
+ PB6 ------> I2C1_SCL
+ PB7 ------> I2C1_SDA
+ */
+ HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6);
+
+ HAL_GPIO_DeInit(GPIOB, GPIO_PIN_7);
+
+ /* USER CODE BEGIN I2C1_MspDeInit 1 */
+
+ /* USER CODE END I2C1_MspDeInit 1 */
+ }
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
diff --git a/Core/Src/main.c b/Core/Src/main.c
index b804c64..779c896 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -19,6 +19,7 @@
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
+#include "i2c.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
@@ -26,7 +27,7 @@
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "miscdev.h"
-#include "ds18b20.h"
+#include "sht20.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
@@ -70,7 +71,7 @@
/* USER CODE BEGIN 1 */
int rv;
- float temperature;
+ float temperature, humidity;
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
@@ -95,6 +96,7 @@
MX_ADC1_Init();
MX_TIM6_Init();
MX_TIM1_Init();
+ MX_I2C1_Init();
/* USER CODE BEGIN 2 */
beep_start(2, 300);
/* USER CODE END 2 */
@@ -103,14 +105,14 @@
/* USER CODE BEGIN WHILE */
while (1)
{
- rv = ds18b20_sample( &temperature);
- if( rv < 0 )
+ rv = sht20_sample_TrH(&temperature, &humidity);
+ if( rv )
{
- printf("ERROR: DS18B20 sample data failure, rv=%d\r\n", rv);
+ printf("ERROR: SHT20 sample data failure, rv=%d\r\n", rv);
}
else
{
- printf("DS18B20 sample temperature: %.3f\r\n", temperature);
+ printf("SHT20 sample temperature: %.2f relative humidity: %.1f%%\r\n", temperature, humidity);
}
HAL_Delay(1000);
diff --git a/Drivers/STM32L4xx_HAL_Driver/Inc/stm32l4xx_ll_i2c.h b/Drivers/STM32L4xx_HAL_Driver/Inc/stm32l4xx_ll_i2c.h
new file mode 100644
index 0000000..612bc76
--- /dev/null
+++ b/Drivers/STM32L4xx_HAL_Driver/Inc/stm32l4xx_ll_i2c.h
@@ -0,0 +1,2279 @@
+/**
+ ******************************************************************************
+ * @file stm32l4xx_ll_i2c.h
+ * @author MCD Application Team
+ * @brief Header file of I2C LL module.
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef STM32L4xx_LL_I2C_H
+#define STM32L4xx_LL_I2C_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l4xx.h"
+
+/** @addtogroup STM32L4xx_LL_Driver
+ * @{
+ */
+
+#if defined (I2C1) || defined (I2C2) || defined (I2C3) || defined (I2C4)
+
+/** @defgroup I2C_LL I2C
+ * @{
+ */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup I2C_LL_Private_Constants I2C Private Constants
+ * @{
+ */
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
+#if defined(USE_FULL_LL_DRIVER)
+/** @defgroup I2C_LL_Private_Macros I2C Private Macros
+ * @{
+ */
+/**
+ * @}
+ */
+#endif /*USE_FULL_LL_DRIVER*/
+
+/* Exported types ------------------------------------------------------------*/
+#if defined(USE_FULL_LL_DRIVER)
+/** @defgroup I2C_LL_ES_INIT I2C Exported Init structure
+ * @{
+ */
+typedef struct
+{
+ uint32_t PeripheralMode; /*!< Specifies the peripheral mode.
+ This parameter can be a value of @ref I2C_LL_EC_PERIPHERAL_MODE.
+
+ This feature can be modified afterwards using unitary function
+ @ref LL_I2C_SetMode(). */
+
+ uint32_t Timing; /*!< Specifies the SDA setup, hold time and the SCL high, low period values.
+ This parameter must be set by referring to the STM32CubeMX Tool and
+ the helper macro @ref __LL_I2C_CONVERT_TIMINGS().
+
+ This feature can be modified afterwards using unitary function
+ @ref LL_I2C_SetTiming(). */
+
+ uint32_t AnalogFilter; /*!< Enables or disables analog noise filter.
+ This parameter can be a value of @ref I2C_LL_EC_ANALOGFILTER_SELECTION.
+
+ This feature can be modified afterwards using unitary functions
+ @ref LL_I2C_EnableAnalogFilter() or LL_I2C_DisableAnalogFilter(). */
+
+ uint32_t DigitalFilter; /*!< Configures the digital noise filter.
+ This parameter can be a number between Min_Data = 0x00 and Max_Data = 0x0F.
+
+ This feature can be modified afterwards using unitary function
+ @ref LL_I2C_SetDigitalFilter(). */
+
+ uint32_t OwnAddress1; /*!< Specifies the device own address 1.
+ This parameter must be a value between Min_Data = 0x00 and Max_Data = 0x3FF.
+
+ This feature can be modified afterwards using unitary function
+ @ref LL_I2C_SetOwnAddress1(). */
+
+ uint32_t TypeAcknowledge; /*!< Specifies the ACKnowledge or Non ACKnowledge condition after the address receive
+ match code or next received byte.
+ This parameter can be a value of @ref I2C_LL_EC_I2C_ACKNOWLEDGE.
+
+ This feature can be modified afterwards using unitary function
+ @ref LL_I2C_AcknowledgeNextData(). */
+
+ uint32_t OwnAddrSize; /*!< Specifies the device own address 1 size (7-bit or 10-bit).
+ This parameter can be a value of @ref I2C_LL_EC_OWNADDRESS1.
+
+ This feature can be modified afterwards using unitary function
+ @ref LL_I2C_SetOwnAddress1(). */
+} LL_I2C_InitTypeDef;
+/**
+ * @}
+ */
+#endif /*USE_FULL_LL_DRIVER*/
+
+/* Exported constants --------------------------------------------------------*/
+/** @defgroup I2C_LL_Exported_Constants I2C Exported Constants
+ * @{
+ */
+
+/** @defgroup I2C_LL_EC_CLEAR_FLAG Clear Flags Defines
+ * @brief Flags defines which can be used with LL_I2C_WriteReg function
+ * @{
+ */
+#define LL_I2C_ICR_ADDRCF I2C_ICR_ADDRCF /*!< Address Matched flag */
+#define LL_I2C_ICR_NACKCF I2C_ICR_NACKCF /*!< Not Acknowledge flag */
+#define LL_I2C_ICR_STOPCF I2C_ICR_STOPCF /*!< Stop detection flag */
+#define LL_I2C_ICR_BERRCF I2C_ICR_BERRCF /*!< Bus error flag */
+#define LL_I2C_ICR_ARLOCF I2C_ICR_ARLOCF /*!< Arbitration Lost flag */
+#define LL_I2C_ICR_OVRCF I2C_ICR_OVRCF /*!< Overrun/Underrun flag */
+#define LL_I2C_ICR_PECCF I2C_ICR_PECCF /*!< PEC error flag */
+#define LL_I2C_ICR_TIMOUTCF I2C_ICR_TIMOUTCF /*!< Timeout detection flag */
+#define LL_I2C_ICR_ALERTCF I2C_ICR_ALERTCF /*!< Alert flag */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_GET_FLAG Get Flags Defines
+ * @brief Flags defines which can be used with LL_I2C_ReadReg function
+ * @{
+ */
+#define LL_I2C_ISR_TXE I2C_ISR_TXE /*!< Transmit data register empty */
+#define LL_I2C_ISR_TXIS I2C_ISR_TXIS /*!< Transmit interrupt status */
+#define LL_I2C_ISR_RXNE I2C_ISR_RXNE /*!< Receive data register not empty */
+#define LL_I2C_ISR_ADDR I2C_ISR_ADDR /*!< Address matched (slave mode) */
+#define LL_I2C_ISR_NACKF I2C_ISR_NACKF /*!< Not Acknowledge received flag */
+#define LL_I2C_ISR_STOPF I2C_ISR_STOPF /*!< Stop detection flag */
+#define LL_I2C_ISR_TC I2C_ISR_TC /*!< Transfer Complete (master mode) */
+#define LL_I2C_ISR_TCR I2C_ISR_TCR /*!< Transfer Complete Reload */
+#define LL_I2C_ISR_BERR I2C_ISR_BERR /*!< Bus error */
+#define LL_I2C_ISR_ARLO I2C_ISR_ARLO /*!< Arbitration lost */
+#define LL_I2C_ISR_OVR I2C_ISR_OVR /*!< Overrun/Underrun (slave mode) */
+#define LL_I2C_ISR_PECERR I2C_ISR_PECERR /*!< PEC Error in reception (SMBus mode) */
+#define LL_I2C_ISR_TIMEOUT I2C_ISR_TIMEOUT /*!< Timeout detection flag (SMBus mode) */
+#define LL_I2C_ISR_ALERT I2C_ISR_ALERT /*!< SMBus alert (SMBus mode) */
+#define LL_I2C_ISR_BUSY I2C_ISR_BUSY /*!< Bus busy */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_IT IT Defines
+ * @brief IT defines which can be used with LL_I2C_ReadReg and LL_I2C_WriteReg functions
+ * @{
+ */
+#define LL_I2C_CR1_TXIE I2C_CR1_TXIE /*!< TX Interrupt enable */
+#define LL_I2C_CR1_RXIE I2C_CR1_RXIE /*!< RX Interrupt enable */
+#define LL_I2C_CR1_ADDRIE I2C_CR1_ADDRIE /*!< Address match Interrupt enable (slave only) */
+#define LL_I2C_CR1_NACKIE I2C_CR1_NACKIE /*!< Not acknowledge received Interrupt enable */
+#define LL_I2C_CR1_STOPIE I2C_CR1_STOPIE /*!< STOP detection Interrupt enable */
+#define LL_I2C_CR1_TCIE I2C_CR1_TCIE /*!< Transfer Complete interrupt enable */
+#define LL_I2C_CR1_ERRIE I2C_CR1_ERRIE /*!< Error interrupts enable */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_PERIPHERAL_MODE Peripheral Mode
+ * @{
+ */
+#define LL_I2C_MODE_I2C 0x00000000U /*!< I2C Master or Slave mode */
+#define LL_I2C_MODE_SMBUS_HOST I2C_CR1_SMBHEN /*!< SMBus Host address acknowledge */
+#define LL_I2C_MODE_SMBUS_DEVICE 0x00000000U /*!< SMBus Device default mode
+ (Default address not acknowledge) */
+#define LL_I2C_MODE_SMBUS_DEVICE_ARP I2C_CR1_SMBDEN /*!< SMBus Device Default address acknowledge */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_ANALOGFILTER_SELECTION Analog Filter Selection
+ * @{
+ */
+#define LL_I2C_ANALOGFILTER_ENABLE 0x00000000U /*!< Analog filter is enabled. */
+#define LL_I2C_ANALOGFILTER_DISABLE I2C_CR1_ANFOFF /*!< Analog filter is disabled. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_ADDRESSING_MODE Master Addressing Mode
+ * @{
+ */
+#define LL_I2C_ADDRESSING_MODE_7BIT 0x00000000U /*!< Master operates in 7-bit addressing mode. */
+#define LL_I2C_ADDRESSING_MODE_10BIT I2C_CR2_ADD10 /*!< Master operates in 10-bit addressing mode.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_OWNADDRESS1 Own Address 1 Length
+ * @{
+ */
+#define LL_I2C_OWNADDRESS1_7BIT 0x00000000U /*!< Own address 1 is a 7-bit address. */
+#define LL_I2C_OWNADDRESS1_10BIT I2C_OAR1_OA1MODE /*!< Own address 1 is a 10-bit address.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_OWNADDRESS2 Own Address 2 Masks
+ * @{
+ */
+#define LL_I2C_OWNADDRESS2_NOMASK I2C_OAR2_OA2NOMASK /*!< Own Address2 No mask. */
+#define LL_I2C_OWNADDRESS2_MASK01 I2C_OAR2_OA2MASK01 /*!< Only Address2 bits[7:2] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK02 I2C_OAR2_OA2MASK02 /*!< Only Address2 bits[7:3] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK03 I2C_OAR2_OA2MASK03 /*!< Only Address2 bits[7:4] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK04 I2C_OAR2_OA2MASK04 /*!< Only Address2 bits[7:5] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK05 I2C_OAR2_OA2MASK05 /*!< Only Address2 bits[7:6] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK06 I2C_OAR2_OA2MASK06 /*!< Only Address2 bits[7] are compared. */
+#define LL_I2C_OWNADDRESS2_MASK07 I2C_OAR2_OA2MASK07 /*!< No comparison is done.
+ All Address2 are acknowledged. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_I2C_ACKNOWLEDGE Acknowledge Generation
+ * @{
+ */
+#define LL_I2C_ACK 0x00000000U /*!< ACK is sent after current received byte. */
+#define LL_I2C_NACK I2C_CR2_NACK /*!< NACK is sent after current received byte.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_ADDRSLAVE Slave Address Length
+ * @{
+ */
+#define LL_I2C_ADDRSLAVE_7BIT 0x00000000U /*!< Slave Address in 7-bit. */
+#define LL_I2C_ADDRSLAVE_10BIT I2C_CR2_ADD10 /*!< Slave Address in 10-bit.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_REQUEST Transfer Request Direction
+ * @{
+ */
+#define LL_I2C_REQUEST_WRITE 0x00000000U /*!< Master request a write transfer. */
+#define LL_I2C_REQUEST_READ I2C_CR2_RD_WRN /*!< Master request a read transfer. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_MODE Transfer End Mode
+ * @{
+ */
+#define LL_I2C_MODE_RELOAD I2C_CR2_RELOAD /*!< Enable I2C Reload mode. */
+#define LL_I2C_MODE_AUTOEND I2C_CR2_AUTOEND /*!< Enable I2C Automatic end mode
+ with no HW PEC comparison. */
+#define LL_I2C_MODE_SOFTEND 0x00000000U /*!< Enable I2C Software end mode
+ with no HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_RELOAD LL_I2C_MODE_RELOAD /*!< Enable SMBUS Automatic end mode
+ with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_AUTOEND_NO_PEC LL_I2C_MODE_AUTOEND /*!< Enable SMBUS Automatic end mode
+ with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_SOFTEND_NO_PEC LL_I2C_MODE_SOFTEND /*!< Enable SMBUS Software end mode
+ with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_AUTOEND_WITH_PEC (uint32_t)(LL_I2C_MODE_AUTOEND | I2C_CR2_PECBYTE)
+/*!< Enable SMBUS Automatic end mode with HW PEC comparison. */
+#define LL_I2C_MODE_SMBUS_SOFTEND_WITH_PEC (uint32_t)(LL_I2C_MODE_SOFTEND | I2C_CR2_PECBYTE)
+/*!< Enable SMBUS Software end mode with HW PEC comparison. */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_GENERATE Start And Stop Generation
+ * @{
+ */
+#define LL_I2C_GENERATE_NOSTARTSTOP 0x00000000U
+/*!< Don't Generate Stop and Start condition. */
+#define LL_I2C_GENERATE_STOP (uint32_t)(0x80000000U | I2C_CR2_STOP)
+/*!< Generate Stop condition (Size should be set to 0). */
+#define LL_I2C_GENERATE_START_READ (uint32_t)(0x80000000U | I2C_CR2_START | I2C_CR2_RD_WRN)
+/*!< Generate Start for read request. */
+#define LL_I2C_GENERATE_START_WRITE (uint32_t)(0x80000000U | I2C_CR2_START)
+/*!< Generate Start for write request. */
+#define LL_I2C_GENERATE_RESTART_7BIT_READ (uint32_t)(0x80000000U | I2C_CR2_START | I2C_CR2_RD_WRN)
+/*!< Generate Restart for read request, slave 7Bit address. */
+#define LL_I2C_GENERATE_RESTART_7BIT_WRITE (uint32_t)(0x80000000U | I2C_CR2_START)
+/*!< Generate Restart for write request, slave 7Bit address. */
+#define LL_I2C_GENERATE_RESTART_10BIT_READ (uint32_t)(0x80000000U | I2C_CR2_START | \
+ I2C_CR2_RD_WRN | I2C_CR2_HEAD10R)
+/*!< Generate Restart for read request, slave 10Bit address. */
+#define LL_I2C_GENERATE_RESTART_10BIT_WRITE (uint32_t)(0x80000000U | I2C_CR2_START)
+/*!< Generate Restart for write request, slave 10Bit address.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_DIRECTION Read Write Direction
+ * @{
+ */
+#define LL_I2C_DIRECTION_WRITE 0x00000000U /*!< Write transfer request by master,
+ slave enters receiver mode. */
+#define LL_I2C_DIRECTION_READ I2C_ISR_DIR /*!< Read transfer request by master,
+ slave enters transmitter mode.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_DMA_REG_DATA DMA Register Data
+ * @{
+ */
+#define LL_I2C_DMA_REG_DATA_TRANSMIT 0x00000000U /*!< Get address of data register used for
+ transmission */
+#define LL_I2C_DMA_REG_DATA_RECEIVE 0x00000001U /*!< Get address of data register used for
+ reception */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_SMBUS_TIMEOUTA_MODE SMBus TimeoutA Mode SCL SDA Timeout
+ * @{
+ */
+#define LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW 0x00000000U /*!< TimeoutA is used to detect
+ SCL low level timeout. */
+#define LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH I2C_TIMEOUTR_TIDLE /*!< TimeoutA is used to detect
+ both SCL and SDA high level timeout.*/
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EC_SMBUS_TIMEOUT_SELECTION SMBus Timeout Selection
+ * @{
+ */
+#define LL_I2C_SMBUS_TIMEOUTA I2C_TIMEOUTR_TIMOUTEN /*!< TimeoutA enable bit */
+#define LL_I2C_SMBUS_TIMEOUTB I2C_TIMEOUTR_TEXTEN /*!< TimeoutB (extended clock)
+ enable bit */
+#define LL_I2C_SMBUS_ALL_TIMEOUT (uint32_t)(I2C_TIMEOUTR_TIMOUTEN | \
+ I2C_TIMEOUTR_TEXTEN) /*!< TimeoutA and TimeoutB
+(extended clock) enable bits */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Exported macro ------------------------------------------------------------*/
+/** @defgroup I2C_LL_Exported_Macros I2C Exported Macros
+ * @{
+ */
+
+/** @defgroup I2C_LL_EM_WRITE_READ Common Write and read registers Macros
+ * @{
+ */
+
+/**
+ * @brief Write a value in I2C register
+ * @param __INSTANCE__ I2C Instance
+ * @param __REG__ Register to be written
+ * @param __VALUE__ Value to be written in the register
+ * @retval None
+ */
+#define LL_I2C_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
+
+/**
+ * @brief Read a value in I2C register
+ * @param __INSTANCE__ I2C Instance
+ * @param __REG__ Register to be read
+ * @retval Register value
+ */
+#define LL_I2C_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EM_CONVERT_TIMINGS Convert SDA SCL timings
+ * @{
+ */
+/**
+ * @brief Configure the SDA setup, hold time and the SCL high, low period.
+ * @param __PRESCALER__ This parameter must be a value between Min_Data=0 and Max_Data=0xF.
+ * @param __SETUP_TIME__ This parameter must be a value between Min_Data=0 and Max_Data=0xF.
+ (tscldel = (SCLDEL+1)xtpresc)
+ * @param __HOLD_TIME__ This parameter must be a value between Min_Data=0 and Max_Data=0xF.
+ (tsdadel = SDADELxtpresc)
+ * @param __SCLH_PERIOD__ This parameter must be a value between Min_Data=0 and Max_Data=0xFF.
+ (tsclh = (SCLH+1)xtpresc)
+ * @param __SCLL_PERIOD__ This parameter must be a value between Min_Data=0 and Max_Data=0xFF.
+ (tscll = (SCLL+1)xtpresc)
+ * @retval Value between Min_Data=0 and Max_Data=0xFFFFFFFF
+ */
+#define __LL_I2C_CONVERT_TIMINGS(__PRESCALER__, __SETUP_TIME__, __HOLD_TIME__, __SCLH_PERIOD__, __SCLL_PERIOD__) \
+ ((((uint32_t)(__PRESCALER__) << I2C_TIMINGR_PRESC_Pos) & I2C_TIMINGR_PRESC) | \
+ (((uint32_t)(__SETUP_TIME__) << I2C_TIMINGR_SCLDEL_Pos) & I2C_TIMINGR_SCLDEL) | \
+ (((uint32_t)(__HOLD_TIME__) << I2C_TIMINGR_SDADEL_Pos) & I2C_TIMINGR_SDADEL) | \
+ (((uint32_t)(__SCLH_PERIOD__) << I2C_TIMINGR_SCLH_Pos) & I2C_TIMINGR_SCLH) | \
+ (((uint32_t)(__SCLL_PERIOD__) << I2C_TIMINGR_SCLL_Pos) & I2C_TIMINGR_SCLL))
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup I2C_LL_Exported_Functions I2C Exported Functions
+ * @{
+ */
+
+/** @defgroup I2C_LL_EF_Configuration Configuration
+ * @{
+ */
+
+/**
+ * @brief Enable I2C peripheral (PE = 1).
+ * @rmtoll CR1 PE LL_I2C_Enable
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_Enable(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_PE);
+}
+
+/**
+ * @brief Disable I2C peripheral (PE = 0).
+ * @note When PE = 0, the I2C SCL and SDA lines are released.
+ * Internal state machines and status bits are put back to their reset value.
+ * When cleared, PE must be kept low for at least 3 APB clock cycles.
+ * @rmtoll CR1 PE LL_I2C_Disable
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_Disable(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_PE);
+}
+
+/**
+ * @brief Check if the I2C peripheral is enabled or disabled.
+ * @rmtoll CR1 PE LL_I2C_IsEnabled
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabled(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_PE) == (I2C_CR1_PE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Configure Noise Filters (Analog and Digital).
+ * @note If the analog filter is also enabled, the digital filter is added to analog filter.
+ * The filters can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 ANFOFF LL_I2C_ConfigFilters\n
+ * CR1 DNF LL_I2C_ConfigFilters
+ * @param I2Cx I2C Instance.
+ * @param AnalogFilter This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ANALOGFILTER_ENABLE
+ * @arg @ref LL_I2C_ANALOGFILTER_DISABLE
+ * @param DigitalFilter This parameter must be a value between Min_Data=0x00 (Digital filter disabled)
+ and Max_Data=0x0F (Digital filter enabled and filtering capability up to 15*ti2cclk).
+ * This parameter is used to configure the digital noise filter on SDA and SCL input.
+ * The digital filter will filter spikes with a length of up to DNF[3:0]*ti2cclk.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ConfigFilters(I2C_TypeDef *I2Cx, uint32_t AnalogFilter, uint32_t DigitalFilter)
+{
+ MODIFY_REG(I2Cx->CR1, I2C_CR1_ANFOFF | I2C_CR1_DNF, AnalogFilter | (DigitalFilter << I2C_CR1_DNF_Pos));
+}
+
+/**
+ * @brief Configure Digital Noise Filter.
+ * @note If the analog filter is also enabled, the digital filter is added to analog filter.
+ * This filter can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 DNF LL_I2C_SetDigitalFilter
+ * @param I2Cx I2C Instance.
+ * @param DigitalFilter This parameter must be a value between Min_Data=0x00 (Digital filter disabled)
+ and Max_Data=0x0F (Digital filter enabled and filtering capability up to 15*ti2cclk).
+ * This parameter is used to configure the digital noise filter on SDA and SCL input.
+ * The digital filter will filter spikes with a length of up to DNF[3:0]*ti2cclk.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetDigitalFilter(I2C_TypeDef *I2Cx, uint32_t DigitalFilter)
+{
+ MODIFY_REG(I2Cx->CR1, I2C_CR1_DNF, DigitalFilter << I2C_CR1_DNF_Pos);
+}
+
+/**
+ * @brief Get the current Digital Noise Filter configuration.
+ * @rmtoll CR1 DNF LL_I2C_GetDigitalFilter
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetDigitalFilter(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR1, I2C_CR1_DNF) >> I2C_CR1_DNF_Pos);
+}
+
+/**
+ * @brief Enable Analog Noise Filter.
+ * @note This filter can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 ANFOFF LL_I2C_EnableAnalogFilter
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableAnalogFilter(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ANFOFF);
+}
+
+/**
+ * @brief Disable Analog Noise Filter.
+ * @note This filter can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 ANFOFF LL_I2C_DisableAnalogFilter
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableAnalogFilter(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ANFOFF);
+}
+
+/**
+ * @brief Check if Analog Noise Filter is enabled or disabled.
+ * @rmtoll CR1 ANFOFF LL_I2C_IsEnabledAnalogFilter
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledAnalogFilter(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_ANFOFF) != (I2C_CR1_ANFOFF)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable DMA transmission requests.
+ * @rmtoll CR1 TXDMAEN LL_I2C_EnableDMAReq_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableDMAReq_TX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN);
+}
+
+/**
+ * @brief Disable DMA transmission requests.
+ * @rmtoll CR1 TXDMAEN LL_I2C_DisableDMAReq_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableDMAReq_TX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN);
+}
+
+/**
+ * @brief Check if DMA transmission requests are enabled or disabled.
+ * @rmtoll CR1 TXDMAEN LL_I2C_IsEnabledDMAReq_TX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledDMAReq_TX(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_TXDMAEN) == (I2C_CR1_TXDMAEN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable DMA reception requests.
+ * @rmtoll CR1 RXDMAEN LL_I2C_EnableDMAReq_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableDMAReq_RX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN);
+}
+
+/**
+ * @brief Disable DMA reception requests.
+ * @rmtoll CR1 RXDMAEN LL_I2C_DisableDMAReq_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableDMAReq_RX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN);
+}
+
+/**
+ * @brief Check if DMA reception requests are enabled or disabled.
+ * @rmtoll CR1 RXDMAEN LL_I2C_IsEnabledDMAReq_RX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledDMAReq_RX(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_RXDMAEN) == (I2C_CR1_RXDMAEN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Get the data register address used for DMA transfer
+ * @rmtoll TXDR TXDATA LL_I2C_DMA_GetRegAddr\n
+ * RXDR RXDATA LL_I2C_DMA_GetRegAddr
+ * @param I2Cx I2C Instance
+ * @param Direction This parameter can be one of the following values:
+ * @arg @ref LL_I2C_DMA_REG_DATA_TRANSMIT
+ * @arg @ref LL_I2C_DMA_REG_DATA_RECEIVE
+ * @retval Address of data register
+ */
+__STATIC_INLINE uint32_t LL_I2C_DMA_GetRegAddr(const I2C_TypeDef *I2Cx, uint32_t Direction)
+{
+ uint32_t data_reg_addr;
+
+ if (Direction == LL_I2C_DMA_REG_DATA_TRANSMIT)
+ {
+ /* return address of TXDR register */
+ data_reg_addr = (uint32_t) &(I2Cx->TXDR);
+ }
+ else
+ {
+ /* return address of RXDR register */
+ data_reg_addr = (uint32_t) &(I2Cx->RXDR);
+ }
+
+ return data_reg_addr;
+}
+
+/**
+ * @brief Enable Clock stretching.
+ * @note This bit can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 NOSTRETCH LL_I2C_EnableClockStretching
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableClockStretching(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH);
+}
+
+/**
+ * @brief Disable Clock stretching.
+ * @note This bit can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll CR1 NOSTRETCH LL_I2C_DisableClockStretching
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableClockStretching(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH);
+}
+
+/**
+ * @brief Check if Clock stretching is enabled or disabled.
+ * @rmtoll CR1 NOSTRETCH LL_I2C_IsEnabledClockStretching
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledClockStretching(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_NOSTRETCH) != (I2C_CR1_NOSTRETCH)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable hardware byte control in slave mode.
+ * @rmtoll CR1 SBC LL_I2C_EnableSlaveByteControl
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSlaveByteControl(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_SBC);
+}
+
+/**
+ * @brief Disable hardware byte control in slave mode.
+ * @rmtoll CR1 SBC LL_I2C_DisableSlaveByteControl
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSlaveByteControl(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_SBC);
+}
+
+/**
+ * @brief Check if hardware byte control in slave mode is enabled or disabled.
+ * @rmtoll CR1 SBC LL_I2C_IsEnabledSlaveByteControl
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSlaveByteControl(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_SBC) == (I2C_CR1_SBC)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable Wakeup from STOP.
+ * @note The macro IS_I2C_WAKEUP_FROMSTOP_INSTANCE(I2Cx) can be used to check whether or not
+ * WakeUpFromStop feature is supported by the I2Cx Instance.
+ * @note This bit can only be programmed when Digital Filter is disabled.
+ * @rmtoll CR1 WUPEN LL_I2C_EnableWakeUpFromStop
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableWakeUpFromStop(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_WUPEN);
+}
+
+/**
+ * @brief Disable Wakeup from STOP.
+ * @note The macro IS_I2C_WAKEUP_FROMSTOP_INSTANCE(I2Cx) can be used to check whether or not
+ * WakeUpFromStop feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 WUPEN LL_I2C_DisableWakeUpFromStop
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableWakeUpFromStop(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_WUPEN);
+}
+
+/**
+ * @brief Check if Wakeup from STOP is enabled or disabled.
+ * @note The macro IS_I2C_WAKEUP_FROMSTOP_INSTANCE(I2Cx) can be used to check whether or not
+ * WakeUpFromStop feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 WUPEN LL_I2C_IsEnabledWakeUpFromStop
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledWakeUpFromStop(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_WUPEN) == (I2C_CR1_WUPEN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable General Call.
+ * @note When enabled the Address 0x00 is ACKed.
+ * @rmtoll CR1 GCEN LL_I2C_EnableGeneralCall
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableGeneralCall(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_GCEN);
+}
+
+/**
+ * @brief Disable General Call.
+ * @note When disabled the Address 0x00 is NACKed.
+ * @rmtoll CR1 GCEN LL_I2C_DisableGeneralCall
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableGeneralCall(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_GCEN);
+}
+
+/**
+ * @brief Check if General Call is enabled or disabled.
+ * @rmtoll CR1 GCEN LL_I2C_IsEnabledGeneralCall
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledGeneralCall(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_GCEN) == (I2C_CR1_GCEN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Configure the Master to operate in 7-bit or 10-bit addressing mode.
+ * @note Changing this bit is not allowed, when the START bit is set.
+ * @rmtoll CR2 ADD10 LL_I2C_SetMasterAddressingMode
+ * @param I2Cx I2C Instance.
+ * @param AddressingMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ADDRESSING_MODE_7BIT
+ * @arg @ref LL_I2C_ADDRESSING_MODE_10BIT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetMasterAddressingMode(I2C_TypeDef *I2Cx, uint32_t AddressingMode)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_ADD10, AddressingMode);
+}
+
+/**
+ * @brief Get the Master addressing mode.
+ * @rmtoll CR2 ADD10 LL_I2C_GetMasterAddressingMode
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_ADDRESSING_MODE_7BIT
+ * @arg @ref LL_I2C_ADDRESSING_MODE_10BIT
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetMasterAddressingMode(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_ADD10));
+}
+
+/**
+ * @brief Set the Own Address1.
+ * @rmtoll OAR1 OA1 LL_I2C_SetOwnAddress1\n
+ * OAR1 OA1MODE LL_I2C_SetOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @param OwnAddress1 This parameter must be a value between Min_Data=0 and Max_Data=0x3FF.
+ * @param OwnAddrSize This parameter can be one of the following values:
+ * @arg @ref LL_I2C_OWNADDRESS1_7BIT
+ * @arg @ref LL_I2C_OWNADDRESS1_10BIT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetOwnAddress1(I2C_TypeDef *I2Cx, uint32_t OwnAddress1, uint32_t OwnAddrSize)
+{
+ MODIFY_REG(I2Cx->OAR1, I2C_OAR1_OA1 | I2C_OAR1_OA1MODE, OwnAddress1 | OwnAddrSize);
+}
+
+/**
+ * @brief Enable acknowledge on Own Address1 match address.
+ * @rmtoll OAR1 OA1EN LL_I2C_EnableOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableOwnAddress1(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN);
+}
+
+/**
+ * @brief Disable acknowledge on Own Address1 match address.
+ * @rmtoll OAR1 OA1EN LL_I2C_DisableOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableOwnAddress1(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN);
+}
+
+/**
+ * @brief Check if Own Address1 acknowledge is enabled or disabled.
+ * @rmtoll OAR1 OA1EN LL_I2C_IsEnabledOwnAddress1
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledOwnAddress1(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->OAR1, I2C_OAR1_OA1EN) == (I2C_OAR1_OA1EN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Set the 7bits Own Address2.
+ * @note This action has no effect if own address2 is enabled.
+ * @rmtoll OAR2 OA2 LL_I2C_SetOwnAddress2\n
+ * OAR2 OA2MSK LL_I2C_SetOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @param OwnAddress2 Value between Min_Data=0 and Max_Data=0x7F.
+ * @param OwnAddrMask This parameter can be one of the following values:
+ * @arg @ref LL_I2C_OWNADDRESS2_NOMASK
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK01
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK02
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK03
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK04
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK05
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK06
+ * @arg @ref LL_I2C_OWNADDRESS2_MASK07
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetOwnAddress2(I2C_TypeDef *I2Cx, uint32_t OwnAddress2, uint32_t OwnAddrMask)
+{
+ MODIFY_REG(I2Cx->OAR2, I2C_OAR2_OA2 | I2C_OAR2_OA2MSK, OwnAddress2 | OwnAddrMask);
+}
+
+/**
+ * @brief Enable acknowledge on Own Address2 match address.
+ * @rmtoll OAR2 OA2EN LL_I2C_EnableOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableOwnAddress2(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN);
+}
+
+/**
+ * @brief Disable acknowledge on Own Address2 match address.
+ * @rmtoll OAR2 OA2EN LL_I2C_DisableOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableOwnAddress2(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN);
+}
+
+/**
+ * @brief Check if Own Address1 acknowledge is enabled or disabled.
+ * @rmtoll OAR2 OA2EN LL_I2C_IsEnabledOwnAddress2
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledOwnAddress2(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->OAR2, I2C_OAR2_OA2EN) == (I2C_OAR2_OA2EN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Configure the SDA setup, hold time and the SCL high, low period.
+ * @note This bit can only be programmed when the I2C is disabled (PE = 0).
+ * @rmtoll TIMINGR TIMINGR LL_I2C_SetTiming
+ * @param I2Cx I2C Instance.
+ * @param Timing This parameter must be a value between Min_Data=0 and Max_Data=0xFFFFFFFF.
+ * @note This parameter is computed with the STM32CubeMX Tool.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetTiming(I2C_TypeDef *I2Cx, uint32_t Timing)
+{
+ WRITE_REG(I2Cx->TIMINGR, Timing);
+}
+
+/**
+ * @brief Get the Timing Prescaler setting.
+ * @rmtoll TIMINGR PRESC LL_I2C_GetTimingPrescaler
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTimingPrescaler(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_PRESC) >> I2C_TIMINGR_PRESC_Pos);
+}
+
+/**
+ * @brief Get the SCL low period setting.
+ * @rmtoll TIMINGR SCLL LL_I2C_GetClockLowPeriod
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetClockLowPeriod(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLL) >> I2C_TIMINGR_SCLL_Pos);
+}
+
+/**
+ * @brief Get the SCL high period setting.
+ * @rmtoll TIMINGR SCLH LL_I2C_GetClockHighPeriod
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetClockHighPeriod(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLH) >> I2C_TIMINGR_SCLH_Pos);
+}
+
+/**
+ * @brief Get the SDA hold time.
+ * @rmtoll TIMINGR SDADEL LL_I2C_GetDataHoldTime
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetDataHoldTime(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SDADEL) >> I2C_TIMINGR_SDADEL_Pos);
+}
+
+/**
+ * @brief Get the SDA setup time.
+ * @rmtoll TIMINGR SCLDEL LL_I2C_GetDataSetupTime
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetDataSetupTime(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMINGR, I2C_TIMINGR_SCLDEL) >> I2C_TIMINGR_SCLDEL_Pos);
+}
+
+/**
+ * @brief Configure peripheral mode.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 SMBHEN LL_I2C_SetMode\n
+ * CR1 SMBDEN LL_I2C_SetMode
+ * @param I2Cx I2C Instance.
+ * @param PeripheralMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_MODE_I2C
+ * @arg @ref LL_I2C_MODE_SMBUS_HOST
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE_ARP
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetMode(I2C_TypeDef *I2Cx, uint32_t PeripheralMode)
+{
+ MODIFY_REG(I2Cx->CR1, I2C_CR1_SMBHEN | I2C_CR1_SMBDEN, PeripheralMode);
+}
+
+/**
+ * @brief Get peripheral mode.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 SMBHEN LL_I2C_GetMode\n
+ * CR1 SMBDEN LL_I2C_GetMode
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_MODE_I2C
+ * @arg @ref LL_I2C_MODE_SMBUS_HOST
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE
+ * @arg @ref LL_I2C_MODE_SMBUS_DEVICE_ARP
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetMode(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR1, I2C_CR1_SMBHEN | I2C_CR1_SMBDEN));
+}
+
+/**
+ * @brief Enable SMBus alert (Host or Device mode)
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note SMBus Device mode:
+ * - SMBus Alert pin is drived low and
+ * Alert Response Address Header acknowledge is enabled.
+ * SMBus Host mode:
+ * - SMBus Alert pin management is supported.
+ * @rmtoll CR1 ALERTEN LL_I2C_EnableSMBusAlert
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusAlert(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ALERTEN);
+}
+
+/**
+ * @brief Disable SMBus alert (Host or Device mode)
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note SMBus Device mode:
+ * - SMBus Alert pin is not drived (can be used as a standard GPIO) and
+ * Alert Response Address Header acknowledge is disabled.
+ * SMBus Host mode:
+ * - SMBus Alert pin management is not supported.
+ * @rmtoll CR1 ALERTEN LL_I2C_DisableSMBusAlert
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSMBusAlert(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ALERTEN);
+}
+
+/**
+ * @brief Check if SMBus alert (Host or Device mode) is enabled or disabled.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 ALERTEN LL_I2C_IsEnabledSMBusAlert
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusAlert(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_ALERTEN) == (I2C_CR1_ALERTEN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable SMBus Packet Error Calculation (PEC).
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 PECEN LL_I2C_EnableSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusPEC(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_PECEN);
+}
+
+/**
+ * @brief Disable SMBus Packet Error Calculation (PEC).
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 PECEN LL_I2C_DisableSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSMBusPEC(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_PECEN);
+}
+
+/**
+ * @brief Check if SMBus Packet Error Calculation (PEC) is enabled or disabled.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR1 PECEN LL_I2C_IsEnabledSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusPEC(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_PECEN) == (I2C_CR1_PECEN)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Configure the SMBus Clock Timeout.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note This configuration can only be programmed when associated Timeout is disabled (TimeoutA and/orTimeoutB).
+ * @rmtoll TIMEOUTR TIMEOUTA LL_I2C_ConfigSMBusTimeout\n
+ * TIMEOUTR TIDLE LL_I2C_ConfigSMBusTimeout\n
+ * TIMEOUTR TIMEOUTB LL_I2C_ConfigSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param TimeoutA This parameter must be a value between Min_Data=0 and Max_Data=0xFFF.
+ * @param TimeoutAMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH
+ * @param TimeoutB
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ConfigSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t TimeoutA, uint32_t TimeoutAMode,
+ uint32_t TimeoutB)
+{
+ MODIFY_REG(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTA | I2C_TIMEOUTR_TIDLE | I2C_TIMEOUTR_TIMEOUTB,
+ TimeoutA | TimeoutAMode | (TimeoutB << I2C_TIMEOUTR_TIMEOUTB_Pos));
+}
+
+/**
+ * @brief Configure the SMBus Clock TimeoutA (SCL low timeout or SCL and SDA high timeout depends on TimeoutA mode).
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note These bits can only be programmed when TimeoutA is disabled.
+ * @rmtoll TIMEOUTR TIMEOUTA LL_I2C_SetSMBusTimeoutA
+ * @param I2Cx I2C Instance.
+ * @param TimeoutA This parameter must be a value between Min_Data=0 and Max_Data=0xFFF.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSMBusTimeoutA(I2C_TypeDef *I2Cx, uint32_t TimeoutA)
+{
+ WRITE_REG(I2Cx->TIMEOUTR, TimeoutA);
+}
+
+/**
+ * @brief Get the SMBus Clock TimeoutA setting.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMEOUTA LL_I2C_GetSMBusTimeoutA
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0 and Max_Data=0xFFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusTimeoutA(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTA));
+}
+
+/**
+ * @brief Set the SMBus Clock TimeoutA mode.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note This bit can only be programmed when TimeoutA is disabled.
+ * @rmtoll TIMEOUTR TIDLE LL_I2C_SetSMBusTimeoutAMode
+ * @param I2Cx I2C Instance.
+ * @param TimeoutAMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSMBusTimeoutAMode(I2C_TypeDef *I2Cx, uint32_t TimeoutAMode)
+{
+ WRITE_REG(I2Cx->TIMEOUTR, TimeoutAMode);
+}
+
+/**
+ * @brief Get the SMBus Clock TimeoutA mode.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIDLE LL_I2C_GetSMBusTimeoutAMode
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SCL_LOW
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA_MODE_SDA_SCL_HIGH
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusTimeoutAMode(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIDLE));
+}
+
+/**
+ * @brief Configure the SMBus Extended Cumulative Clock TimeoutB (Master or Slave mode).
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note These bits can only be programmed when TimeoutB is disabled.
+ * @rmtoll TIMEOUTR TIMEOUTB LL_I2C_SetSMBusTimeoutB
+ * @param I2Cx I2C Instance.
+ * @param TimeoutB This parameter must be a value between Min_Data=0 and Max_Data=0xFFF.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSMBusTimeoutB(I2C_TypeDef *I2Cx, uint32_t TimeoutB)
+{
+ WRITE_REG(I2Cx->TIMEOUTR, TimeoutB << I2C_TIMEOUTR_TIMEOUTB_Pos);
+}
+
+/**
+ * @brief Get the SMBus Extended Cumulative Clock TimeoutB setting.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMEOUTB LL_I2C_GetSMBusTimeoutB
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0 and Max_Data=0xFFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusTimeoutB(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->TIMEOUTR, I2C_TIMEOUTR_TIMEOUTB) >> I2C_TIMEOUTR_TIMEOUTB_Pos);
+}
+
+/**
+ * @brief Enable the SMBus Clock Timeout.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMOUTEN LL_I2C_EnableSMBusTimeout\n
+ * TIMEOUTR TEXTEN LL_I2C_EnableSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param ClockTimeout This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTB
+ * @arg @ref LL_I2C_SMBUS_ALL_TIMEOUT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
+{
+ SET_BIT(I2Cx->TIMEOUTR, ClockTimeout);
+}
+
+/**
+ * @brief Disable the SMBus Clock Timeout.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMOUTEN LL_I2C_DisableSMBusTimeout\n
+ * TIMEOUTR TEXTEN LL_I2C_DisableSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param ClockTimeout This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTB
+ * @arg @ref LL_I2C_SMBUS_ALL_TIMEOUT
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableSMBusTimeout(I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
+{
+ CLEAR_BIT(I2Cx->TIMEOUTR, ClockTimeout);
+}
+
+/**
+ * @brief Check if the SMBus Clock Timeout is enabled or disabled.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll TIMEOUTR TIMOUTEN LL_I2C_IsEnabledSMBusTimeout\n
+ * TIMEOUTR TEXTEN LL_I2C_IsEnabledSMBusTimeout
+ * @param I2Cx I2C Instance.
+ * @param ClockTimeout This parameter can be one of the following values:
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTA
+ * @arg @ref LL_I2C_SMBUS_TIMEOUTB
+ * @arg @ref LL_I2C_SMBUS_ALL_TIMEOUT
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusTimeout(const I2C_TypeDef *I2Cx, uint32_t ClockTimeout)
+{
+ return ((READ_BIT(I2Cx->TIMEOUTR, (I2C_TIMEOUTR_TIMOUTEN | I2C_TIMEOUTR_TEXTEN)) == \
+ (ClockTimeout)) ? 1UL : 0UL);
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EF_IT_Management IT_Management
+ * @{
+ */
+
+/**
+ * @brief Enable TXIS interrupt.
+ * @rmtoll CR1 TXIE LL_I2C_EnableIT_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_TX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_TXIE);
+}
+
+/**
+ * @brief Disable TXIS interrupt.
+ * @rmtoll CR1 TXIE LL_I2C_DisableIT_TX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_TX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_TXIE);
+}
+
+/**
+ * @brief Check if the TXIS Interrupt is enabled or disabled.
+ * @rmtoll CR1 TXIE LL_I2C_IsEnabledIT_TX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_TX(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_TXIE) == (I2C_CR1_TXIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable RXNE interrupt.
+ * @rmtoll CR1 RXIE LL_I2C_EnableIT_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_RX(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_RXIE);
+}
+
+/**
+ * @brief Disable RXNE interrupt.
+ * @rmtoll CR1 RXIE LL_I2C_DisableIT_RX
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_RX(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_RXIE);
+}
+
+/**
+ * @brief Check if the RXNE Interrupt is enabled or disabled.
+ * @rmtoll CR1 RXIE LL_I2C_IsEnabledIT_RX
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_RX(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_RXIE) == (I2C_CR1_RXIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable Address match interrupt (slave mode only).
+ * @rmtoll CR1 ADDRIE LL_I2C_EnableIT_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_ADDR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ADDRIE);
+}
+
+/**
+ * @brief Disable Address match interrupt (slave mode only).
+ * @rmtoll CR1 ADDRIE LL_I2C_DisableIT_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_ADDR(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ADDRIE);
+}
+
+/**
+ * @brief Check if Address match interrupt is enabled or disabled.
+ * @rmtoll CR1 ADDRIE LL_I2C_IsEnabledIT_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_ADDR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_ADDRIE) == (I2C_CR1_ADDRIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable Not acknowledge received interrupt.
+ * @rmtoll CR1 NACKIE LL_I2C_EnableIT_NACK
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_NACK(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_NACKIE);
+}
+
+/**
+ * @brief Disable Not acknowledge received interrupt.
+ * @rmtoll CR1 NACKIE LL_I2C_DisableIT_NACK
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_NACK(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_NACKIE);
+}
+
+/**
+ * @brief Check if Not acknowledge received interrupt is enabled or disabled.
+ * @rmtoll CR1 NACKIE LL_I2C_IsEnabledIT_NACK
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_NACK(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_NACKIE) == (I2C_CR1_NACKIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable STOP detection interrupt.
+ * @rmtoll CR1 STOPIE LL_I2C_EnableIT_STOP
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_STOP(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_STOPIE);
+}
+
+/**
+ * @brief Disable STOP detection interrupt.
+ * @rmtoll CR1 STOPIE LL_I2C_DisableIT_STOP
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_STOP(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_STOPIE);
+}
+
+/**
+ * @brief Check if STOP detection interrupt is enabled or disabled.
+ * @rmtoll CR1 STOPIE LL_I2C_IsEnabledIT_STOP
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_STOP(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_STOPIE) == (I2C_CR1_STOPIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable Transfer Complete interrupt.
+ * @note Any of these events will generate interrupt :
+ * Transfer Complete (TC)
+ * Transfer Complete Reload (TCR)
+ * @rmtoll CR1 TCIE LL_I2C_EnableIT_TC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_TC(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_TCIE);
+}
+
+/**
+ * @brief Disable Transfer Complete interrupt.
+ * @note Any of these events will generate interrupt :
+ * Transfer Complete (TC)
+ * Transfer Complete Reload (TCR)
+ * @rmtoll CR1 TCIE LL_I2C_DisableIT_TC
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_TC(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_TCIE);
+}
+
+/**
+ * @brief Check if Transfer Complete interrupt is enabled or disabled.
+ * @rmtoll CR1 TCIE LL_I2C_IsEnabledIT_TC
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_TC(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_TCIE) == (I2C_CR1_TCIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable Error interrupts.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note Any of these errors will generate interrupt :
+ * Arbitration Loss (ARLO)
+ * Bus Error detection (BERR)
+ * Overrun/Underrun (OVR)
+ * SMBus Timeout detection (TIMEOUT)
+ * SMBus PEC error detection (PECERR)
+ * SMBus Alert pin event detection (ALERT)
+ * @rmtoll CR1 ERRIE LL_I2C_EnableIT_ERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableIT_ERR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR1, I2C_CR1_ERRIE);
+}
+
+/**
+ * @brief Disable Error interrupts.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note Any of these errors will generate interrupt :
+ * Arbitration Loss (ARLO)
+ * Bus Error detection (BERR)
+ * Overrun/Underrun (OVR)
+ * SMBus Timeout detection (TIMEOUT)
+ * SMBus PEC error detection (PECERR)
+ * SMBus Alert pin event detection (ALERT)
+ * @rmtoll CR1 ERRIE LL_I2C_DisableIT_ERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableIT_ERR(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR1, I2C_CR1_ERRIE);
+}
+
+/**
+ * @brief Check if Error interrupts are enabled or disabled.
+ * @rmtoll CR1 ERRIE LL_I2C_IsEnabledIT_ERR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledIT_ERR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR1, I2C_CR1_ERRIE) == (I2C_CR1_ERRIE)) ? 1UL : 0UL);
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EF_FLAG_management FLAG_management
+ * @{
+ */
+
+/**
+ * @brief Indicate the status of Transmit data register empty flag.
+ * @note RESET: When next data is written in Transmit data register.
+ * SET: When Transmit data register is empty.
+ * @rmtoll ISR TXE LL_I2C_IsActiveFlag_TXE
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TXE(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_TXE) == (I2C_ISR_TXE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Transmit interrupt flag.
+ * @note RESET: When next data is written in Transmit data register.
+ * SET: When Transmit data register is empty.
+ * @rmtoll ISR TXIS LL_I2C_IsActiveFlag_TXIS
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TXIS(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_TXIS) == (I2C_ISR_TXIS)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Receive data register not empty flag.
+ * @note RESET: When Receive data register is read.
+ * SET: When the received data is copied in Receive data register.
+ * @rmtoll ISR RXNE LL_I2C_IsActiveFlag_RXNE
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_RXNE(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_RXNE) == (I2C_ISR_RXNE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Address matched flag (slave mode).
+ * @note RESET: Clear default value.
+ * SET: When the received slave address matched with one of the enabled slave address.
+ * @rmtoll ISR ADDR LL_I2C_IsActiveFlag_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_ADDR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_ADDR) == (I2C_ISR_ADDR)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Not Acknowledge received flag.
+ * @note RESET: Clear default value.
+ * SET: When a NACK is received after a byte transmission.
+ * @rmtoll ISR NACKF LL_I2C_IsActiveFlag_NACK
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_NACK(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_NACKF) == (I2C_ISR_NACKF)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Stop detection flag.
+ * @note RESET: Clear default value.
+ * SET: When a Stop condition is detected.
+ * @rmtoll ISR STOPF LL_I2C_IsActiveFlag_STOP
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_STOP(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_STOPF) == (I2C_ISR_STOPF)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Transfer complete flag (master mode).
+ * @note RESET: Clear default value.
+ * SET: When RELOAD=0, AUTOEND=0 and NBYTES date have been transferred.
+ * @rmtoll ISR TC LL_I2C_IsActiveFlag_TC
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TC(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_TC) == (I2C_ISR_TC)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Transfer complete flag (master mode).
+ * @note RESET: Clear default value.
+ * SET: When RELOAD=1 and NBYTES date have been transferred.
+ * @rmtoll ISR TCR LL_I2C_IsActiveFlag_TCR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_TCR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_TCR) == (I2C_ISR_TCR)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Bus error flag.
+ * @note RESET: Clear default value.
+ * SET: When a misplaced Start or Stop condition is detected.
+ * @rmtoll ISR BERR LL_I2C_IsActiveFlag_BERR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_BERR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_BERR) == (I2C_ISR_BERR)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Arbitration lost flag.
+ * @note RESET: Clear default value.
+ * SET: When arbitration lost.
+ * @rmtoll ISR ARLO LL_I2C_IsActiveFlag_ARLO
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_ARLO(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_ARLO) == (I2C_ISR_ARLO)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Overrun/Underrun flag (slave mode).
+ * @note RESET: Clear default value.
+ * SET: When an overrun/underrun error occurs (Clock Stretching Disabled).
+ * @rmtoll ISR OVR LL_I2C_IsActiveFlag_OVR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_OVR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_OVR) == (I2C_ISR_OVR)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of SMBus PEC error flag in reception.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note RESET: Clear default value.
+ * SET: When the received PEC does not match with the PEC register content.
+ * @rmtoll ISR PECERR LL_I2C_IsActiveSMBusFlag_PECERR
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_PECERR(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_PECERR) == (I2C_ISR_PECERR)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of SMBus Timeout detection flag.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note RESET: Clear default value.
+ * SET: When a timeout or extended clock timeout occurs.
+ * @rmtoll ISR TIMEOUT LL_I2C_IsActiveSMBusFlag_TIMEOUT
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_TIMEOUT(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_TIMEOUT) == (I2C_ISR_TIMEOUT)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of SMBus alert flag.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note RESET: Clear default value.
+ * SET: When SMBus host configuration, SMBus alert enabled and
+ * a falling edge event occurs on SMBA pin.
+ * @rmtoll ISR ALERT LL_I2C_IsActiveSMBusFlag_ALERT
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveSMBusFlag_ALERT(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_ALERT) == (I2C_ISR_ALERT)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Indicate the status of Bus Busy flag.
+ * @note RESET: Clear default value.
+ * SET: When a Start condition is detected.
+ * @rmtoll ISR BUSY LL_I2C_IsActiveFlag_BUSY
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsActiveFlag_BUSY(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->ISR, I2C_ISR_BUSY) == (I2C_ISR_BUSY)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Clear Address Matched flag.
+ * @rmtoll ICR ADDRCF LL_I2C_ClearFlag_ADDR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_ADDR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_ADDRCF);
+}
+
+/**
+ * @brief Clear Not Acknowledge flag.
+ * @rmtoll ICR NACKCF LL_I2C_ClearFlag_NACK
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_NACK(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_NACKCF);
+}
+
+/**
+ * @brief Clear Stop detection flag.
+ * @rmtoll ICR STOPCF LL_I2C_ClearFlag_STOP
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_STOP(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_STOPCF);
+}
+
+/**
+ * @brief Clear Transmit data register empty flag (TXE).
+ * @note This bit can be clear by software in order to flush the transmit data register (TXDR).
+ * @rmtoll ISR TXE LL_I2C_ClearFlag_TXE
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_TXE(I2C_TypeDef *I2Cx)
+{
+ WRITE_REG(I2Cx->ISR, I2C_ISR_TXE);
+}
+
+/**
+ * @brief Clear Bus error flag.
+ * @rmtoll ICR BERRCF LL_I2C_ClearFlag_BERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_BERR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_BERRCF);
+}
+
+/**
+ * @brief Clear Arbitration lost flag.
+ * @rmtoll ICR ARLOCF LL_I2C_ClearFlag_ARLO
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_ARLO(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_ARLOCF);
+}
+
+/**
+ * @brief Clear Overrun/Underrun flag.
+ * @rmtoll ICR OVRCF LL_I2C_ClearFlag_OVR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearFlag_OVR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_OVRCF);
+}
+
+/**
+ * @brief Clear SMBus PEC error flag.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll ICR PECCF LL_I2C_ClearSMBusFlag_PECERR
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearSMBusFlag_PECERR(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_PECCF);
+}
+
+/**
+ * @brief Clear SMBus Timeout detection flag.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll ICR TIMOUTCF LL_I2C_ClearSMBusFlag_TIMEOUT
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearSMBusFlag_TIMEOUT(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_TIMOUTCF);
+}
+
+/**
+ * @brief Clear SMBus Alert flag.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll ICR ALERTCF LL_I2C_ClearSMBusFlag_ALERT
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_ClearSMBusFlag_ALERT(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->ICR, I2C_ICR_ALERTCF);
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_LL_EF_Data_Management Data_Management
+ * @{
+ */
+
+/**
+ * @brief Enable automatic STOP condition generation (master mode).
+ * @note Automatic end mode : a STOP condition is automatically sent when NBYTES data are transferred.
+ * This bit has no effect in slave mode or when RELOAD bit is set.
+ * @rmtoll CR2 AUTOEND LL_I2C_EnableAutoEndMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableAutoEndMode(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_AUTOEND);
+}
+
+/**
+ * @brief Disable automatic STOP condition generation (master mode).
+ * @note Software end mode : TC flag is set when NBYTES data are transferre, stretching SCL low.
+ * @rmtoll CR2 AUTOEND LL_I2C_DisableAutoEndMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableAutoEndMode(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR2, I2C_CR2_AUTOEND);
+}
+
+/**
+ * @brief Check if automatic STOP condition is enabled or disabled.
+ * @rmtoll CR2 AUTOEND LL_I2C_IsEnabledAutoEndMode
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledAutoEndMode(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR2, I2C_CR2_AUTOEND) == (I2C_CR2_AUTOEND)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Enable reload mode (master mode).
+ * @note The transfer is not completed after the NBYTES data transfer, NBYTES will be reloaded when TCR flag is set.
+ * @rmtoll CR2 RELOAD LL_I2C_EnableReloadMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableReloadMode(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_RELOAD);
+}
+
+/**
+ * @brief Disable reload mode (master mode).
+ * @note The transfer is completed after the NBYTES data transfer(STOP or RESTART will follow).
+ * @rmtoll CR2 RELOAD LL_I2C_DisableReloadMode
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableReloadMode(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR2, I2C_CR2_RELOAD);
+}
+
+/**
+ * @brief Check if reload mode is enabled or disabled.
+ * @rmtoll CR2 RELOAD LL_I2C_IsEnabledReloadMode
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledReloadMode(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR2, I2C_CR2_RELOAD) == (I2C_CR2_RELOAD)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Configure the number of bytes for transfer.
+ * @note Changing these bits when START bit is set is not allowed.
+ * @rmtoll CR2 NBYTES LL_I2C_SetTransferSize
+ * @param I2Cx I2C Instance.
+ * @param TransferSize This parameter must be a value between Min_Data=0x00 and Max_Data=0xFF.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetTransferSize(I2C_TypeDef *I2Cx, uint32_t TransferSize)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_NBYTES, TransferSize << I2C_CR2_NBYTES_Pos);
+}
+
+/**
+ * @brief Get the number of bytes configured for transfer.
+ * @rmtoll CR2 NBYTES LL_I2C_GetTransferSize
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTransferSize(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_NBYTES) >> I2C_CR2_NBYTES_Pos);
+}
+
+/**
+ * @brief Prepare the generation of a ACKnowledge or Non ACKnowledge condition after the address receive match code
+ or next received byte.
+ * @note Usage in Slave mode only.
+ * @rmtoll CR2 NACK LL_I2C_AcknowledgeNextData
+ * @param I2Cx I2C Instance.
+ * @param TypeAcknowledge This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ACK
+ * @arg @ref LL_I2C_NACK
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_AcknowledgeNextData(I2C_TypeDef *I2Cx, uint32_t TypeAcknowledge)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_NACK, TypeAcknowledge);
+}
+
+/**
+ * @brief Generate a START or RESTART condition
+ * @note The START bit can be set even if bus is BUSY or I2C is in slave mode.
+ * This action has no effect when RELOAD is set.
+ * @rmtoll CR2 START LL_I2C_GenerateStartCondition
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_GenerateStartCondition(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_START);
+}
+
+/**
+ * @brief Generate a STOP condition after the current byte transfer (master mode).
+ * @rmtoll CR2 STOP LL_I2C_GenerateStopCondition
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_GenerateStopCondition(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_STOP);
+}
+
+/**
+ * @brief Enable automatic RESTART Read request condition for 10bit address header (master mode).
+ * @note The master sends the complete 10bit slave address read sequence :
+ * Start + 2 bytes 10bit address in Write direction + Restart + first 7 bits of 10bit address
+ in Read direction.
+ * @rmtoll CR2 HEAD10R LL_I2C_EnableAuto10BitRead
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableAuto10BitRead(I2C_TypeDef *I2Cx)
+{
+ CLEAR_BIT(I2Cx->CR2, I2C_CR2_HEAD10R);
+}
+
+/**
+ * @brief Disable automatic RESTART Read request condition for 10bit address header (master mode).
+ * @note The master only sends the first 7 bits of 10bit address in Read direction.
+ * @rmtoll CR2 HEAD10R LL_I2C_DisableAuto10BitRead
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_DisableAuto10BitRead(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_HEAD10R);
+}
+
+/**
+ * @brief Check if automatic RESTART Read request condition for 10bit address header is enabled or disabled.
+ * @rmtoll CR2 HEAD10R LL_I2C_IsEnabledAuto10BitRead
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledAuto10BitRead(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR2, I2C_CR2_HEAD10R) != (I2C_CR2_HEAD10R)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Configure the transfer direction (master mode).
+ * @note Changing these bits when START bit is set is not allowed.
+ * @rmtoll CR2 RD_WRN LL_I2C_SetTransferRequest
+ * @param I2Cx I2C Instance.
+ * @param TransferRequest This parameter can be one of the following values:
+ * @arg @ref LL_I2C_REQUEST_WRITE
+ * @arg @ref LL_I2C_REQUEST_READ
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetTransferRequest(I2C_TypeDef *I2Cx, uint32_t TransferRequest)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_RD_WRN, TransferRequest);
+}
+
+/**
+ * @brief Get the transfer direction requested (master mode).
+ * @rmtoll CR2 RD_WRN LL_I2C_GetTransferRequest
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_REQUEST_WRITE
+ * @arg @ref LL_I2C_REQUEST_READ
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTransferRequest(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_RD_WRN));
+}
+
+/**
+ * @brief Configure the slave address for transfer (master mode).
+ * @note Changing these bits when START bit is set is not allowed.
+ * @rmtoll CR2 SADD LL_I2C_SetSlaveAddr
+ * @param I2Cx I2C Instance.
+ * @param SlaveAddr This parameter must be a value between Min_Data=0x00 and Max_Data=0x3F.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_SetSlaveAddr(I2C_TypeDef *I2Cx, uint32_t SlaveAddr)
+{
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_SADD, SlaveAddr);
+}
+
+/**
+ * @brief Get the slave address programmed for transfer.
+ * @rmtoll CR2 SADD LL_I2C_GetSlaveAddr
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x0 and Max_Data=0x3F
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSlaveAddr(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->CR2, I2C_CR2_SADD));
+}
+
+/**
+ * @brief Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set).
+ * @rmtoll CR2 SADD LL_I2C_HandleTransfer\n
+ * CR2 ADD10 LL_I2C_HandleTransfer\n
+ * CR2 RD_WRN LL_I2C_HandleTransfer\n
+ * CR2 START LL_I2C_HandleTransfer\n
+ * CR2 STOP LL_I2C_HandleTransfer\n
+ * CR2 RELOAD LL_I2C_HandleTransfer\n
+ * CR2 NBYTES LL_I2C_HandleTransfer\n
+ * CR2 AUTOEND LL_I2C_HandleTransfer\n
+ * CR2 HEAD10R LL_I2C_HandleTransfer
+ * @param I2Cx I2C Instance.
+ * @param SlaveAddr Specifies the slave address to be programmed.
+ * @param SlaveAddrSize This parameter can be one of the following values:
+ * @arg @ref LL_I2C_ADDRSLAVE_7BIT
+ * @arg @ref LL_I2C_ADDRSLAVE_10BIT
+ * @param TransferSize Specifies the number of bytes to be programmed.
+ * This parameter must be a value between Min_Data=0 and Max_Data=255.
+ * @param EndMode This parameter can be one of the following values:
+ * @arg @ref LL_I2C_MODE_RELOAD
+ * @arg @ref LL_I2C_MODE_AUTOEND
+ * @arg @ref LL_I2C_MODE_SOFTEND
+ * @arg @ref LL_I2C_MODE_SMBUS_RELOAD
+ * @arg @ref LL_I2C_MODE_SMBUS_AUTOEND_NO_PEC
+ * @arg @ref LL_I2C_MODE_SMBUS_SOFTEND_NO_PEC
+ * @arg @ref LL_I2C_MODE_SMBUS_AUTOEND_WITH_PEC
+ * @arg @ref LL_I2C_MODE_SMBUS_SOFTEND_WITH_PEC
+ * @param Request This parameter can be one of the following values:
+ * @arg @ref LL_I2C_GENERATE_NOSTARTSTOP
+ * @arg @ref LL_I2C_GENERATE_STOP
+ * @arg @ref LL_I2C_GENERATE_START_READ
+ * @arg @ref LL_I2C_GENERATE_START_WRITE
+ * @arg @ref LL_I2C_GENERATE_RESTART_7BIT_READ
+ * @arg @ref LL_I2C_GENERATE_RESTART_7BIT_WRITE
+ * @arg @ref LL_I2C_GENERATE_RESTART_10BIT_READ
+ * @arg @ref LL_I2C_GENERATE_RESTART_10BIT_WRITE
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_HandleTransfer(I2C_TypeDef *I2Cx, uint32_t SlaveAddr, uint32_t SlaveAddrSize,
+ uint32_t TransferSize, uint32_t EndMode, uint32_t Request)
+{
+ /* Declaration of tmp to prevent undefined behavior of volatile usage */
+ uint32_t tmp = ((uint32_t)(((uint32_t)SlaveAddr & I2C_CR2_SADD) | \
+ ((uint32_t)SlaveAddrSize & I2C_CR2_ADD10) | \
+ (((uint32_t)TransferSize << I2C_CR2_NBYTES_Pos) & I2C_CR2_NBYTES) | \
+ (uint32_t)EndMode | (uint32_t)Request) & (~0x80000000U));
+
+ /* update CR2 register */
+ MODIFY_REG(I2Cx->CR2, I2C_CR2_SADD | I2C_CR2_ADD10 |
+ (I2C_CR2_RD_WRN & (uint32_t)(Request >> (31U - I2C_CR2_RD_WRN_Pos))) |
+ I2C_CR2_START | I2C_CR2_STOP | I2C_CR2_RELOAD |
+ I2C_CR2_NBYTES | I2C_CR2_AUTOEND | I2C_CR2_HEAD10R,
+ tmp);
+}
+
+/**
+ * @brief Indicate the value of transfer direction (slave mode).
+ * @note RESET: Write transfer, Slave enters in receiver mode.
+ * SET: Read transfer, Slave enters in transmitter mode.
+ * @rmtoll ISR DIR LL_I2C_GetTransferDirection
+ * @param I2Cx I2C Instance.
+ * @retval Returned value can be one of the following values:
+ * @arg @ref LL_I2C_DIRECTION_WRITE
+ * @arg @ref LL_I2C_DIRECTION_READ
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetTransferDirection(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->ISR, I2C_ISR_DIR));
+}
+
+/**
+ * @brief Return the slave matched address.
+ * @rmtoll ISR ADDCODE LL_I2C_GetAddressMatchCode
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0x3F
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetAddressMatchCode(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->ISR, I2C_ISR_ADDCODE) >> I2C_ISR_ADDCODE_Pos << 1);
+}
+
+/**
+ * @brief Enable internal comparison of the SMBus Packet Error byte (transmission or reception mode).
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @note This feature is cleared by hardware when the PEC byte is transferred, or when a STOP condition
+ or an Address Matched is received.
+ * This bit has no effect when RELOAD bit is set.
+ * This bit has no effect in device mode when SBC bit is not set.
+ * @rmtoll CR2 PECBYTE LL_I2C_EnableSMBusPECCompare
+ * @param I2Cx I2C Instance.
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_EnableSMBusPECCompare(I2C_TypeDef *I2Cx)
+{
+ SET_BIT(I2Cx->CR2, I2C_CR2_PECBYTE);
+}
+
+/**
+ * @brief Check if the SMBus Packet Error byte internal comparison is requested or not.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll CR2 PECBYTE LL_I2C_IsEnabledSMBusPECCompare
+ * @param I2Cx I2C Instance.
+ * @retval State of bit (1 or 0).
+ */
+__STATIC_INLINE uint32_t LL_I2C_IsEnabledSMBusPECCompare(const I2C_TypeDef *I2Cx)
+{
+ return ((READ_BIT(I2Cx->CR2, I2C_CR2_PECBYTE) == (I2C_CR2_PECBYTE)) ? 1UL : 0UL);
+}
+
+/**
+ * @brief Get the SMBus Packet Error byte calculated.
+ * @note The macro IS_SMBUS_ALL_INSTANCE(I2Cx) can be used to check whether or not
+ * SMBus feature is supported by the I2Cx Instance.
+ * @rmtoll PECR PEC LL_I2C_GetSMBusPEC
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint32_t LL_I2C_GetSMBusPEC(const I2C_TypeDef *I2Cx)
+{
+ return (uint32_t)(READ_BIT(I2Cx->PECR, I2C_PECR_PEC));
+}
+
+/**
+ * @brief Read Receive Data register.
+ * @rmtoll RXDR RXDATA LL_I2C_ReceiveData8
+ * @param I2Cx I2C Instance.
+ * @retval Value between Min_Data=0x00 and Max_Data=0xFF
+ */
+__STATIC_INLINE uint8_t LL_I2C_ReceiveData8(const I2C_TypeDef *I2Cx)
+{
+ return (uint8_t)(READ_BIT(I2Cx->RXDR, I2C_RXDR_RXDATA));
+}
+
+/**
+ * @brief Write in Transmit Data Register .
+ * @rmtoll TXDR TXDATA LL_I2C_TransmitData8
+ * @param I2Cx I2C Instance.
+ * @param Data Value between Min_Data=0x00 and Max_Data=0xFF
+ * @retval None
+ */
+__STATIC_INLINE void LL_I2C_TransmitData8(I2C_TypeDef *I2Cx, uint8_t Data)
+{
+ WRITE_REG(I2Cx->TXDR, Data);
+}
+
+/**
+ * @}
+ */
+
+#if defined(USE_FULL_LL_DRIVER)
+/** @defgroup I2C_LL_EF_Init Initialization and de-initialization functions
+ * @{
+ */
+
+ErrorStatus LL_I2C_Init(I2C_TypeDef *I2Cx, const LL_I2C_InitTypeDef *I2C_InitStruct);
+ErrorStatus LL_I2C_DeInit(const I2C_TypeDef *I2Cx);
+void LL_I2C_StructInit(LL_I2C_InitTypeDef *I2C_InitStruct);
+
+
+/**
+ * @}
+ */
+#endif /* USE_FULL_LL_DRIVER */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* I2C1 || I2C2 || I2C3 || I2C4 */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* STM32L4xx_LL_I2C_H */
diff --git a/ISKBoard.ioc b/ISKBoard.ioc
index d43f3be..20118c1 100644
--- a/ISKBoard.ioc
+++ b/ISKBoard.ioc
@@ -18,17 +18,20 @@
CAD.provider=
File.Version=6
GPIO.groupedBy=Group By Peripherals
+I2C1.IPParameters=Timing
+I2C1.Timing=0x10D19CE4
KeepUserPlacement=false
Mcu.CPN=STM32L431RCT6
Mcu.Family=STM32L4
Mcu.IP0=ADC1
-Mcu.IP1=NVIC
-Mcu.IP2=RCC
-Mcu.IP3=SYS
-Mcu.IP4=TIM1
-Mcu.IP5=TIM6
-Mcu.IP6=USART1
-Mcu.IPNb=7
+Mcu.IP1=I2C1
+Mcu.IP2=NVIC
+Mcu.IP3=RCC
+Mcu.IP4=SYS
+Mcu.IP5=TIM1
+Mcu.IP6=TIM6
+Mcu.IP7=USART1
+Mcu.IPNb=8
Mcu.Name=STM32L431R(B-C)Tx
Mcu.Package=LQFP64
Mcu.Pin0=PH0-OSC_IN (PH0)
@@ -37,8 +40,10 @@
Mcu.Pin11=PA10
Mcu.Pin12=PA11
Mcu.Pin13=PD2
-Mcu.Pin14=VP_SYS_VS_Systick
-Mcu.Pin15=VP_TIM6_VS_ClockSourceINT
+Mcu.Pin14=PB6
+Mcu.Pin15=PB7
+Mcu.Pin16=VP_SYS_VS_Systick
+Mcu.Pin17=VP_TIM6_VS_ClockSourceINT
Mcu.Pin2=PB0
Mcu.Pin3=PB1
Mcu.Pin4=PB2
@@ -47,7 +52,7 @@
Mcu.Pin7=PB14
Mcu.Pin8=PC6
Mcu.Pin9=PC9
-Mcu.PinsNb=16
+Mcu.PinsNb=18
Mcu.ThirdPartyNb=0
Mcu.UserConstants=
Mcu.UserName=STM32L431RCTx
@@ -99,6 +104,10 @@
PB2.Locked=true
PB2.PinState=GPIO_PIN_SET
PB2.Signal=GPIO_Output
+PB6.Mode=I2C
+PB6.Signal=I2C1_SCL
+PB7.Mode=I2C
+PB7.Signal=I2C1_SDA
PC6.GPIOParameters=PinState
PC6.Locked=true
PC6.PinState=GPIO_PIN_SET
@@ -145,7 +154,7 @@
ProjectManager.UAScriptAfterPath=
ProjectManager.UAScriptBeforePath=
ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true,4-MX_ADC1_Init-ADC1-false-HAL-true,5-MX_TIM6_Init-TIM6-false-HAL-true,6-MX_TIM1_Init-TIM1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true,4-MX_ADC1_Init-ADC1-false-HAL-true,5-MX_TIM6_Init-TIM6-false-HAL-true,6-MX_TIM1_Init-TIM1-false-HAL-true,7-MX_I2C1_Init-I2C1-false-HAL-true
RCC.ADCFreq_Value=12000000
RCC.AHBFreq_Value=80000000
RCC.APB1Freq_Value=80000000
--
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