中断双边沿检测按键动作

只看该作者 · 2023-9-14 16:33

https://bbs.21ic.com/icview-3325360-1-1.html
参靠了上面的神贴思路，尝试了一下啊。

#include "mcc_generated_files/system/system.h"



bool SW_flag = 0; //记录是否发生了下降沿中断

bool SW_Button_active_flag =0; //有效按键激活标记





void SW_Button_Interrupt_Handle(void)

{

    if(SW_GetValue()==LOW)

    {

        SW_flag = 1;

    }

    else if( ( SW_GetValue()==HIGH ) && (SW_flag == 1) )

    {

        SW_Button_active_flag =1; 

        SW_flag = 0;

    }

}





/*

    Main application

*/





int main(void)

{

    SYSTEM_Initialize();



    // If using interrupts in PIC18 High/Low Priority Mode you need to enable the Global High and Low Interrupts 

    // If using interrupts in PIC Mid-Range Compatibility Mode you need to enable the Global Interrupts 

    // Use the following macros to: 



    // Enable the Global Interrupts 

    INTERRUPT_GlobalInterruptEnable(); 



    // Disable the Global Interrupts 

    //INTERRUPT_GlobalInterruptDisable(); 



    SW_SetInterruptHandler(SW_Button_Interrupt_Handle);



    while(1)

    {

        if(SW_Button_active_flag == 1)

        {

            SW_Button_active_flag = 0;

            LED_Toggle();

        }

    }    

}