I2C_driver.c

#include "main.h"
 
void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hi2c->Instance==I2C3)
  {
  /* USER CODE BEGIN I2C3_MspInit 0 */
 
  /* USER CODE END I2C3_MspInit 0 */
 
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    GPIO_InitStruct.Pin = 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_I2C3;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
    GPIO_InitStruct.Pin = GPIO_PIN_8;
    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_I2C3;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
    /* Peripheral clock enable */
    __HAL_RCC_I2C3_CLK_ENABLE();
//    /* I2C3 interrupt Init */
//    HAL_NVIC_SetPriority(I2C3_EV_IRQn, 5, 0);
//    HAL_NVIC_EnableIRQ(I2C3_EV_IRQn);
  /* USER CODE BEGIN I2C3_MspInit 1 */
 
  /* USER CODE END I2C3_MspInit 1 */
  }
 
}