#include "debug.h"

/* Global define */

/* Global Variable */

/*********************************************************************

 * @fn      EXTI_INT_INIT

 *

 * @brief   Initializes EXTI collection.

 *

 * @return  none

 */

void EXTI_INT_INIT(void)

{

    EXTI_InitTypeDef EXTI_InitStructure = {0};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);

    EXTI_InitStructure.EXTI_Line = EXTI_Line9;

    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;

    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;

    EXTI_InitStructure.EXTI_LineCmd = ENABLE;

    EXTI_Init(&EXTI_InitStructure);

}

/*********************************************************************

 * @fn      EXTI0_INT_INIT

 *

 * @brief   Initializes EXTI0 collection.

 *

 * @return  none

 */

void EXTI0_INT_INIT(void)

{

    GPIO_InitTypeDef GPIO_InitStructure = {0};

    EXTI_InitTypeDef EXTI_InitStructure = {0};

    NVIC_InitTypeDef NVIC_InitStructure = {0};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO  | RCC_APB2Periph_GPIOC, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;

    GPIO_Init(GPIOC, &GPIO_InitStructure);

//    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;

//    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

//    GPIO_Init(GPIOC, &GPIO_InitStructure);

    /* GPIOC ----> EXTI_Line0 */

    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource0);

    EXTI_InitStructure.EXTI_Line = EXTI_Line0;

    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;

    EXTI_InitStructure.EXTI_LineCmd = ENABLE;

    EXTI_Init(&EXTI_InitStructure);

//    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource5);

//    EXTI_InitStructure.EXTI_Line = EXTI_Line5;

//    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

//    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;

//    EXTI_InitStructure.EXTI_LineCmd = ENABLE;

//    EXTI_Init(&EXTI_InitStructure);

//

//    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource6);

//    EXTI_InitStructure.EXTI_Line = EXTI_Line6;

//    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

//    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;

//    EXTI_InitStructure.EXTI_LineCmd = ENABLE;

//    EXTI_Init(&EXTI_InitStructure);

//

//    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource7);

//    EXTI_InitStructure.EXTI_Line = EXTI_Line7;

//    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

//    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;

//    EXTI_InitStructure.EXTI_LineCmd = ENABLE;

//    EXTI_Init(&EXTI_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = EXTI7_0_IRQn;

    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;

    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

    NVIC_Init(&NVIC_InitStructure);

}

/*********************************************************************

 * @fn      main

 *

 * @brief   Main program.

 *

 * @return  none

 */

int main(void)

{

//    GPIO_InitTypeDef GPIO_InitStructure = {0};

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

    SystemCoreClockUpdate();

    Delay_Init();

    Delay_Ms(1000);

    Delay_Ms(1000);

//    EXTI_INT_INIT();

//

//

//    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);

//    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

//    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;

//    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;

//

//    GPIO_Init(GPIOA, &GPIO_InitStructure);

//    GPIO_Init(GPIOC, &GPIO_InitStructure);

//    GPIO_Init(GPIOD, &GPIO_InitStructure);

#if (SDI_PRINT == SDI_PR_OPEN)

    SDI_Printf_Enable();

#else

    USART_Printf_Init(115200);

#endif

    printf("SystemClk:%d\r\n", SystemCoreClock);

    printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );

    printf("Standby Mode Test\r\n");

    printf("0x1FFFF800-%08x\r\n", *(u32*)0x1FFFF800);

    EXTI0_INT_INIT();

//    RCC_LSICmd(ENABLE);

//    while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);

//    PWR_AWU_SetPrescaler(PWR_AWU_Prescaler_10240);

//    PWR_AWU_SetWindowValue(25);

//    PWR_AutoWakeUpCmd(ENABLE);

    PWR_EnterSTANDBYMode(PWR_STANDBYEntry_WFI);

    #if (SDI_PRINT == SDI_PR_OPEN)

    SDI_Printf_Enable();

#else

    USART_Printf_Init(115200);

#endif

    printf("\r\n Auto wake up \r\n");

    while(1)

    {

        Delay_Ms(1000);

        Delay_Ms(1000);

        printf("Run in main\r\n");

        RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

        EXTI0_INT_INIT();

        PWR_EnterSTANDBYMode(PWR_STANDBYEntry_WFI);

    }

}

CH32V003 待机模式唤醒.zip

 if(EXTI_GetITStatus(EXTI_Line0)!=RESET)

    {

        printf("Run at EXTI0\r\n");

        EXTI_ClearITPendingBit(EXTI_Line0);     /* Clear Flag */

    }

中断函数中再加个判断，清空标志。

可以了