I2C_Exported_Functions_Group1

Collaboration diagram for I2C_Exported_Functions_Group1:

Functions
HAL_StatusTypeDef	HAL_I2C_Init (I2C_HandleTypeDef *hi2c)
HAL_StatusTypeDef	HAL_I2C_DeInit (I2C_HandleTypeDef *hi2c)
void	HAL_I2C_MspInit (I2C_HandleTypeDef *hi2c)
	I2C MSP Initialization This function configures the hardware resources used in this example. More...
void	HAL_I2C_MspDeInit (I2C_HandleTypeDef *hi2c)
	I2C MSP De-Initialization This function freeze the hardware resources used in this example. More...

Detailed Description

Function Documentation

HAL_I2C_Init()

HAL_StatusTypeDef HAL_I2C_Init

(

I2C_HandleTypeDef *

hi2c

)

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HAL_I2C_DeInit()

HAL_StatusTypeDef HAL_I2C_DeInit

(

I2C_HandleTypeDef *

hi2c

)

HAL_I2C_MspInit()

void HAL_I2C_MspInit

(

I2C_HandleTypeDef *

hi2c

)

I2C MSP Initialization This function configures the hardware resources used in this example.

Parameters

hi2c	I2C handle pointer

Return values

None

I2C1 GPIO Configuration PB8 ---—> I2C1_SCL PB9 ---—> I2C1_SDA

                                              {
 
    GPIO_InitTypeDef GPIO_InitStruct = { 0 };
    if (hi2c->Instance == I2C1) {
        /* USER CODE BEGIN I2C1_MspInit 0 */
 
        /* USER CODE END I2C1_MspInit 0 */
 
        __HAL_RCC_GPIOB_CLK_ENABLE();
        /**I2C1 GPIO Configuration
    PB8     ------> I2C1_SCL
    PB9     ------> I2C1_SDA
    */
        GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_9;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
        GPIO_InitStruct.Pull = GPIO_PULLUP;
        GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
        /* Peripheral clock enable */
        __HAL_RCC_I2C1_CLK_ENABLE();
        /* USER CODE BEGIN I2C1_MspInit 1 */
 
        /* USER CODE END I2C1_MspInit 1 */
    }
}

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HAL_I2C_MspDeInit()

void HAL_I2C_MspDeInit

(

I2C_HandleTypeDef *

hi2c

)

I2C MSP De-Initialization This function freeze the hardware resources used in this example.

Parameters

hi2c	I2C handle pointer

Return values

None

I2C1 GPIO Configuration PB8 ---—> I2C1_SCL PB9 ---—> I2C1_SDA

                                                {
 
    if (hi2c->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
    PB8     ------> I2C1_SCL
    PB9     ------> I2C1_SDA
    */
        HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8 | GPIO_PIN_9);
 
        /* USER CODE BEGIN I2C1_MspDeInit 1 */
 
        /* USER CODE END I2C1_MspDeInit 1 */
    }
}

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