WizziLab / DebouncedInterrupt

A replacement for InterruptIn that debounces the interrupt.

Dependents:   D7A_Demo-Get-started CVtoOSCConverter EE3501keypad D7A_Localisation ... more

Fork of DebouncedInterrupt by Anil Kandangath

Example code:

#include "DebouncedInterrupt.h"

DebouncedInterrupt up_button(USER_BUTTON);

void onUp()
{
    // Do Something
}

int main()
{
    // Will immediatly call function and ignore other interrupts until timeout
    up_button.attach(&onUp, IRQ_FALL, 1000, true);

    // Will call function only if button has been held for the specified time
    //up_button.attach(&onUp, IRQ_FALL, 500, false);

    while(1) {}
}

DebounceInterrupts.cpp

Committer:
kandangath
Date:
2014-02-18
Revision:
7:2d73e219dadf
Parent:
6:e1461ccdf3c0
Child:
8:4b3ff16d5f91

File content as of revision 7:2d73e219dadf:

#include "DebounceInterrupts.h"

Timeout timeout;

DebounceInterrupts::DebounceInterrupts(void (*fptr)(void), 
                                       InterruptIn *interruptIn, 
                                       const interruptTrigger& trigger,
                                       const unsigned int& debounce_ms)
{
    fCallback = fptr;
    _debounce_count = 0;
    
    switch(trigger) {
     case INT_RISE:
        interruptIn->rise(this, &DebounceInterrupts::_onInterrupt);
        break;
     case INT_FALL:
        interruptIn->fall(this, &DebounceInterrupts::_onInterrupt);
        break;
     default:
        break;
    }

    _debounce_us = 1000*debounce_ms;
}

DebounceInterrupts::~DebounceInterrupts()
{
}

void DebounceInterrupts::_callback()
{
    _debounce_count = 0;
    fCallback();
}

void DebounceInterrupts::_onInterrupt()
{
    _debounce_count++;
    timeout.attach_us(this, &DebounceInterrupts::_callback, _debounce_us);
}

unsigned int DebounceInterrupts::get_debounce()
{
    return _debounce_count;
}