5 GPIO设置电平无效

发布于 2020-09-28 11:32:22 浏览：1661 订阅该版

硬件：stm32ret6
软件：CubeMX Keil
问题：就是一个很简单的GPIO控制电平翻转，但是就是起不了作用，希望大佬能帮忙看下，我是被搞懵了。里面还有芯片的数据手册，硬件这边是没有问题的，因为用标准库是可以的，用HAL库就不行了。

```c
int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  while (1)
  {
		
		HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8, GPIO_PIN_SET);
		HAL_Delay(100);
		HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8, GPIO_PIN_RESET);
		
  }
}

HAL_StatusTypeDef HAL_Init(void)
{
  /* Configure Flash prefetch */
#if (PREFETCH_ENABLE != 0)
#if defined(STM32F101x6) || defined(STM32F101xB) || defined(STM32F101xE) || defined(STM32F101xG) || \
    defined(STM32F102x6) || defined(STM32F102xB) || \
    defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG) || \
    defined(STM32F105xC) || defined(STM32F107xC)

/* Prefetch buffer is not available on value line devices */
  __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
#endif
#endif /* PREFETCH_ENABLE */

/* Set Interrupt Group Priority */
  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);

/* Use systick as time base source and configure 1ms tick (default clock after Reset is HSI) */
  HAL_InitTick(TICK_INT_PRIORITY);

/* Init the low level hardware */
  HAL_MspInit();

/* Return function status */
  return HAL_OK;
}

void HAL_MspInit(void)
{
  /* USER CODE BEGIN MspInit 0 */

/* USER CODE END MspInit 0 */

__HAL_RCC_AFIO_CLK_ENABLE();
  __HAL_RCC_PWR_CLK_ENABLE();

HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_2);

/* System interrupt init*/

/** DISABLE: JTAG-DP Disabled and SW-DP Disabled
  */
  //__HAL_AFIO_REMAP_SWJ_DISABLE();
	__HAL_AFIO_REMAP_SWJ_NOJTAG();

/* USER CODE BEGIN MspInit 1 */

/* USER CODE END MspInit 1 */
}

void MX_GPIO_Init(void)
{

GPIO_InitTypeDef GPIO_InitStruct = {0};

/* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

/*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8, GPIO_PIN_SET);

/*Configure GPIO pin : PB8 */
  GPIO_InitStruct.Pin = GPIO_PIN_8;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

```