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.h

Committer:
kandangath
Date:
2014-02-18
Revision:
0:ca5a0fee9f52
Child:
1:ffacad1b455a

File content as of revision 0:ca5a0fee9f52:


/**
 * Debounces an interrupt
 */
 
#ifndef DEBOUNCE_INTERRUPTS_H
#define DEBOUNCE_INTERRUPTS_H

#include <stdint.h>
#include "mbed.h"

class DebounceInterrupts {
private:
    unsigned int fDebounce_us;
    void (*fCallback)(void);
    void onInterrupt(void);
public:
    /** Setup debounce for an InterruptIn.
     *  fptr: pointer to function to be called when debounced Interrupt fires
     *  interrupt: InterruptIn to monitor
     *  rise: true:rise, false: fall
     *  debounce_ms: milliseconds to wait for a stable input
     *  @return Pull the oldest element from the buffer
     */
    DebounceInterrupts(void (*fptr)(void), InterruptIn *interrupt, const bool& rise=true, const uint32_t& debounce_ms=10);
    ~DebounceInterrupts();
};
#endif