如題，現已有程式代碼如下:
#include"stm32f10x.h"
int a=0;
int main()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_5|GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
//GPIO_InitTypeDef GPIO_InitStructure;
//RCC_APB2PeriphClockCmd(RCCPeriph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPU;
GPIO_Init(GPIOA,&GPIO_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel=EXTI2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
EXTI_InitStructure.EXTI_Line=EXTI_Line2;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_Init(&EXTI_InitStructure);
GPIO_EXTILineConfig (GPIO_PortSourceGPIOA ,GPIO_PinSource0);
while(1)
{
}
}
void EXTI2_IRQHandler(void)
{
if(EXTI_GetFlagStatus(EXTI_Line2))
{
a=~a;
GPIO_WriteBit(GPIOA,GPIO_Pin_5|GPIO_Pin_6,a);
}
EXTI_ClearFlag(EXTI_Line2);
}
由于本人小白不會加入按鍵輸入以實作手動解警（PA5為LED燈引腳，PA6為蜂鳴器引腳），請大佬幫忙修改一下程式，萬分感謝！
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標籤：單片機/工控