STM32硬件IIC错误复位 HAL库

state = HAL_I2C_Mem_Read_DMA(&hi2c1,DEV_ADDR,ANGLE,I2C_MEMADD_SIZE_8BIT,readdata,2);
if(state != HAL_OK)
{
	printf("iic error = %d\r\n",state);
	i2c_reset();
}

void i2c_reset(void)
{
	HAL_I2C_DeInit(&hi2c1);
	
    /* 尝试将总线拉高 */
    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6 | GPIO_PIN_7, GPIO_PIN_SET);

	hi2c1.Instance->CR1 = I2C_CR1_SWRST;                //复位I2C控制器
    hi2c1.Instance->CR1 = 0;              				//解除复位（不会自动清除）
    /* 重新初始化I2C */
    MX_I2C1_Init();
}