STM32F0库函数初始化系列：进入STOP模式，外部中断唤醒

SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0);

          EXTI_InitStructure.EXTI_Line=EXTI_Line0;
          EXTI_InitStructure.EXTI_LineCmd=ENABLE;
          EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
          EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Falling;
          EXTI_Init(&EXTI_InitStructure);

          NVIC_InitStructure.NVIC_IRQChannel = EXTI0_1_IRQn;
          NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
          NVIC_InitStructure.NVIC_IRQChannelPriority=0;
          NVIC_Init(&NVIC_InitStructure);

        PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);   //进入STOP模式

 　　　　//PWR_EnterSTANDBYMode();   进入待机模式

//进入待机模式，不需要配置中断，不进入中断
void EXTI0_1_IRQHandler()
{
  NVIC_SystemReset();
  EXTI_ClearITPendingBit(EXTI_Line0);
}