求教外部中断，程序哪里错了？

xiaoguobei · 发表于 2014-4-26 22:05:08

按键中断实验
#include"stm32f10x_lib.h"
#include"sys.h"
#include"stm32f10x_nvic.h"
#define LED0 PAout(8)
#define LED1 PDout(2)
#define WK_UP GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)
#define KEY0 GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_13)
#define KEY1 GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_15)
void delay(u16 a);
void LED_init(void);
void KEY_init(void);
void EXTIX_Init(void);

int main(void)
{
LED_init();
KEY_init();
EXTIX_Init();
while(1)
{

delay(1000);
}
}
void KEY_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_15;//KEY0 KEY1 低电平有效
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //WK_UP 设置成输入，下拉高电平有效
GPIO_Init(GPIOA, &GPIO_InitStructure);

}
void LED_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|
RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //LED0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //LED1
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
void EXTIX_Init(void)
{

EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource13);
EXTI_InitStructure.EXTI_Line=EXTI_Line13; //KEY0
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_PortSourceGPIOA,GPIO_PinSource15); //KEY1
EXTI_InitStructure.EXTI_Line=EXTI_Line15;
EXTI_Init(&EXTI_InitStructure);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line=EXTI_Line0;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //WK_UP
EXTI_Init(&EXTI_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

}

void delay(u16 a)
{ u32 i=0;
while(a--)
{
i=8000;
while(i--);
}
}

void EXTI0_IRQHandler(void)
{
delay(20);
if(WK_UP==1)
{
LED0=!LED0;
LED1=!LED1;
}
EXTI_ClearITPendingBit(EXTI_Line0);
}
void EXTI15_10_IRQHandler(void)
{
delay(20);
if(KEY0==0)
{
LED0=!LED0;
}
else if(KEY1==0)
{
LED1=!LED1;
}
EXTI_ClearITPendingBit(EXTI_Line13);
EXTI_ClearITPendingBit(EXTI_Line15);

}