功耗太高了，没有外围设备4Ma,耗电太快了，得加低功耗功能，代码很简单，就是main里进入待机（睡眠功耗也高），中断触发一次，main里继续待机，但是 中断只触了一次，一直在串口显示一直在中断，好奇怪，下面是在例程里改的
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2023/12/25
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
*low power, sleep mode routine:
*EXTI_Line0(PD0)
*This routine demonstrates that WFI enters the sleep mode, and the PD0 pin input
*low level triggers the external interrupt EXTI_Line0 to exit the sleep mode,
*Program execution continues after wake-up.
*
*/
#include "debug.h"
/* Global define */
/* Global Variable */
/*********************************************************************
* @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_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* GPIOA.0 ----> EXTI_Line0 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource1);
EXTI_InitStructure.EXTI_Line = EXTI_Line1;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_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)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
SystemCoreClockUpdate();
Delay_Init();
Delay_Ms(1000);
Delay_Ms(1000);
#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("Sleep Mode Test\r\n");
EXTI0_INT_INIT();
printf("\r\n ********** \r\n");
__WFE();
printf("\r\n ########## \r\n");
while(1)
{
Delay_Ms(1000);
printf("Run in PWR_STANDBYEntry_WFI main\r\n");
PWR_EnterSTANDBYMode(PWR_STANDBYEntry_WFE);
}
}
void EXTI7_0_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn EXTI0_IRQHandler
*
* @brief This function handles EXTI0 Handler.
*
* @return none
*/
void EXTI7_0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line1)!=RESET)
{
printf("EXTI7_0_IRQHandler EXTI0 Wake_up\r\n");
EXTI_ClearITPendingBit(EXTI_Line0); /* Clear Flag */
// Delay_Ms(2000);
// PWR_EnterSTANDBYMode(PWR_STANDBYEntry_WFI);
// __WFE();
}
}
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