中断唤醒后不会进入待机模式了

归迪 · 发表于 2018-12-25 12:54:08

就是按照原子哥的待机唤醒程序
现在是上电进入待机了
按键3s进入正常模式，然后再按键会迅速复位进入正常模式，不知道什么原因

void Wkup_Init(void)
  {
      EXTI_InitTypeDef EXTI_InitStructure;
      NVIC_InitTypeDef NVIC_InitStructure;
      GPIO_InitTypeDef GPIO_InitStruct;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOA,ENABLE);



GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPD;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStruct.GPIO_Pin  = KEY0_PIN;
GPIO_Init(KEY0,&GPIO_InitStruct);

   GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);



   EXTI_InitStructure.EXTI_Line = EXTI_Line0; //PA0
      EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
      EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
      EXTI_InitStructure.EXTI_LineCmd = ENABLE;
      EXTI_Init(&EXTI_InitStructure);

      NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

}

void EXTI0_IRQHandler(void)
  {
   EXTI_ClearITPendingBit(EXTI_Line0);
   if(Check_up())
   {
      Sys_Enter_Standby();
   }
}

void Sys_Standby(void) //
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
PWR_WakeUpPinCmd(ENABLE);
PWR_EnterSTANDBYMode();
}
void Sys_Enter_Standby(void)//
{
RCC_APB2PeriphResetCmd(0X01FC,DISABLE); //
Sys_Standby();
}

u8 Check_up(void)
{
   u8 t = 0;
   u8 tx = 0;

   while(1)
      {
   if( GPIO_ReadInputDataBit(KEY0,KEY0_PIN)== 1) //

         {
               t++;
               tx = 0;
            }
         else
         {
               tx++;
               if(tx > 3)
                  {

                     return 0;    //????????????
                  }
         }
         delay_ms(30);
         if(t > 100)    //100*30ms = 3s
            {
               return 1;// 3s
            }

            }

}
int main(void)
{
u8 i;
Clock_Init();
NVIC_Configuration();// nvic 分组4
delay_init();
LED_Init();
Wkup_Init();


if(Check_up() == 0) //
      {  Sys_Standby(); }
while（1）；
}