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chenxin
2026-04-23 10:50:18 +08:00
commit a436fda935
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77
IAPV1.1/Driver/exti/exti_io.c Normal file
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#include "bsp.h"
#include "exti_io.h"
void WakeUp_EXIT_Config( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
//enable GPIOA Clock
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
// config PA10 as input floating
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //very import
GPIO_Init(GPIOA, &GPIO_InitStructure);
//enable syscfg clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
// connect EXTI0 line to PA0 pin
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0);
//config EXTI10 Line
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);
// enable and set EXTI0 interrupu to the lowest priority
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
PWR_WakeUpPinCmd(PWR_WakeUpPin_1,ENABLE);
}
//<2F><><EFBFBD><EFBFBD>WKUP<55>ŵ<EFBFBD><C5B5>ź<EFBFBD>
//<2F><><EFBFBD><EFBFBD>ֵ1:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3s<33><73><EFBFBD><EFBFBD>
// 0:<3A><><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>
u8 Check_WKUP(void)
{
u8 t=0; //<2F><>¼<EFBFBD><C2BC><EFBFBD>µ<EFBFBD>ʱ<EFBFBD><CAB1>
while(1)
{
if(WKUP_KD)
{
t++; //<2F>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
delay_ms(30);
if(t>=100) //<2F><><EFBFBD>³<EFBFBD><C2B3><EFBFBD>3<EFBFBD><33><EFBFBD><EFBFBD>
{
return 1; //<2F><><EFBFBD><EFBFBD>3s<33><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
}else
{
return 0; //<2F><><EFBFBD>²<EFBFBD><C2B2><EFBFBD>3<EFBFBD><33>
}
}
}
void EXTI0_IRQHandler( void )
{
EXTI_ClearITPendingBit(EXTI_Line10); //Clear the EXTI line 10 pending bit
if(Check_WKUP()==0)//<2F>ػ<EFBFBD>?
{
Wake_Up_Flag=0;
PWR_EnterSTANDBYMode(); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>STANDBY<42><59>ģʽ
}else
{
Wake_Up_Flag=1;
}
}

14
IAPV1.1/Driver/exti/exti_io.h Normal file
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#ifndef _exti_io_H
#define _exti_io_H
#include "bsp.h"
#include "stm32l1xx_exti.h"
#include "stm32l1xx_syscfg.h"
#define WKUP_KD PAin(0) //PA0 <20><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>ⲿWK_UP<55><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
extern u8 Wake_Up_Flag;
u8 Check_WKUP(void);
void WakeUp_EXIT_Config( void );
#endif