用HAL庫寫的stm32按鍵控制LED燈亮滅源程序

ID:438796 · 發表于 2019-4-18 10:34

用stm32cubemx配置的，單片機是stm32f103v8t6,采用普通i/o模式判斷按鍵，一個按鍵控制LED亮，一個控制滅，我就貼上主要的代碼，供學習HAL庫的朋友學習，我也剛開始學，stm32cubemx的配置文件也在這個文件里面

單片機源程序如下:

void MX_GPIO_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin : PtPin */
  GPIO_InitStruct.Pin = KEY1_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(KEY1_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : PtPin */
  GPIO_InitStruct.Pin = LED_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : PtPin */
  GPIO_InitStruct.Pin = KEY0_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(KEY0_GPIO_Port, &GPIO_InitStruct);

}

int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {

  /* USER CODE END WHILE */
      if( HAL_GPIO_ReadPin(KEY0_GPIO_Port, KEY0_Pin)==0)//讀一個引腳的電平，判斷key0是否按下
      {
            HAL_GPIO_WritePin(LED_GPIO_Port,LED_Pin,GPIO_PIN_RESET);//LED滅
            while(!HAL_GPIO_ReadPin(KEY0_GPIO_Port, KEY0_Pin));//松手檢測
//             HAL_GPIO_TogglePin (LED_GPIO_Port, LED_Pin );
      }
      if( HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin)==0)//判斷key0是否按下
      {
            HAL_GPIO_WritePin(LED_GPIO_Port,LED_Pin,GPIO_PIN_SET);//LED亮
            while(!HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin));//松手檢測
//       HAL_GPIO_TogglePin (LED_GPIO_Port, LED_Pin );
      }
  /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */

}

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用HAL庫寫的stm32按鍵控制LED燈亮滅源程序

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