#include "stm32f10x.h"
#include "stm32f10x_it.h"
void KEY1_Configure(void);
void KEY0_Configure(void);
void KEYUP_Configure(void);
void LED_Configure(void);
void LED1_On(void);
void LED1_Off(void);
void LED2_On(void);
void LED2_Off(void);
void delay_ms(int32_t ms);
uint8_t flag_led_blink=1;
int main(void)
{
KEY1_Configure();
KEY0_Configure();
KEYUP_Configure();
LED_Configure ();
while(1)
{
LED1_On ();
LED2_Off ();
delay_ms (1000);
LED1_Off ();
LED2_On ();
delay_ms (1000);
}
}
void KEY0_Configure(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOC,&GPIO_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel=EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource5);
EXTI_InitStructure.EXTI_Line=EXTI_Line5;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_Init(&EXTI_InitStructure);
}
void KEY1_Configure(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel=EXTI15_10_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource15);
EXTI_InitStructure.EXTI_Line=EXTI_Line15;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_Init(&EXTI_InitStructure);
}
void KEYUP_Configure(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line=EXTI_Line0;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_Init(&EXTI_InitStructure);
}
void LED_Configure(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure. GPIO_Pin=GPIO_Pin_8;
GPIO_InitStructure. GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure. GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_Init(GPIOA,&GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_Init(GPIOD,&GPIO_InitStructure);
LED1_Off ();
LED2_Off ();
}
void LED1_On(void)
{
GPIO_SetBits(GPIOA,GPIO_Pin_8);
}
void LED1_Off(void)
{
GPIO_ResetBits(GPIOA,GPIO_Pin_8);
}
void LED2_On(void)
{
GPIO_SetBits(GPIOD,GPIO_Pin_2);
}
void LED2_Off(void)
{
GPIO_ResetBits(GPIOD,GPIO_Pin_2);
}
void delay_ms(int32_t ms)
{
int32_t i;
while(ms--)
{
i=7500;
while(i--);
}
}
void EXTI0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
{
if(KEYUP_Configure)
{
LED1_Off ();
LED2_Off ();
}
else
{
LED1_Off();
LED2_Off() ;
}
EXTI_ClearITPendingBit(EXTI_Line0);
}
}
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line5)!=RESET)
{
if(KEY0_Configure )
{
GPIO_WriteBit(GPIOA,GPIO_Pin_8,(BitAction)(1-GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_8)));
}
else
{
GPIO_WriteBit(GPIOA,GPIO_Pin_8,(BitAction)(1-GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_8)));
}
EXTI_ClearITPendingBit(EXTI_Line5);
}
}
void EXTI15_10_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line15)!=RESET)
{
if(KEY1_Configure )
{
GPIO_WriteBit(GPIOD,GPIO_Pin_2,(BitAction)(1-GPIO_ReadInputDataBit(GPIOD,GPIO_Pin_2)));
}
else
{
GPIO_WriteBit(GPIOD,GPIO_Pin_2,(BitAction)(1-GPIO_ReadInputDataBit(GPIOD,GPIO_Pin_2)));
}
EXTI_ClearITPendingBit(EXTI_Line15);
}
}
#我想当我按下pa0的时候跳出while循环执行按键按下后设置的程序，当按键再按一下的时回到循环
你需要先判断按键的状态，如果上一次未按下而本次按下键了，则说明有按下动作，记标志flag，同时记次数count，如果count是单数则表示第一次按，双数表示再次按下。
break