新手上路
- 积分
- 35
- 金钱
- 35
- 注册时间
- 2020-6-3
- 在线时间
- 6 小时
|

楼主 |
发表于 2020-6-3 12:20:21
|
显示全部楼层
#include "exti.h"
#include "delay.h"
#include "led.h"
#include "key.h"
#include "beep.h"
void EXTIX_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
KEY_Init();
RCC_AHB2PeriphClockCmd(RCC_APB2Periph_SYSCFG,ENABLE);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOE,EXTI_PinSource4);
EXTI_InitStructure.EXTI_Line=EXTI_Line4;
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 = EXTI4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x01;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x02;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI4_IRQHandler(void)
{
delay_ms(10);
if(KEY0==0)
{
LED0=!LED0;
LED1=!LED1;
}
EXTI_ClearITPendingBit(EXTI_Line4);
}
|
|