【求助帖】STM32使用HAL库无法按键消抖

kevingeng · 发表于 2021-10-8 21:01:03

.c文件
uint8_t Key_Scan(uint8_t mode)
{
      static uint8_t key_up=1;
      if(key_up&&(KEY1==0||KEY2==0||KEY3==0))
            {
            HAL_Delay(10);
            key_up=0;
            HAL_Delay(150);
            if(KEY1==0)return KEY1_PRES;
            else if(KEY2==0)return KEY2_PRES;
            else if(KEY3==0)
            return KEY3_PRES;
            }
      else if(KEY1==1||KEY2==1||KEY3==1)key_up=1;
            return 0;

}

main.c文件
while (1)
  {
   switch(Key_Scan(0))
      {
      case KEY1_PRES:
      HAL_GPIO_TogglePin(GPIOA,Relay1_Pin);
      break;
      case KEY2_PRES:
      HAL_GPIO_TogglePin(GPIOA,Relay1_Pin);
      break;
      case KEY3_PRES:
      HAL_GPIO_TogglePin(GPIOC,GPIO_PIN_12);
      HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_12);
      break;
      }

}