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@0:ca5a0fee9f52, 2014-02-18 (annotated)

Committer:
kandangath
Date:
Tue Feb 18 01:05:10 2014 +0000
Revision:
0:ca5a0fee9f52
Child:
1:ffacad1b455a
Init version of class to debounce InterruptIn

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kandangath 0:ca5a0fee9f52 1
kandangath 0:ca5a0fee9f52 2 /**
kandangath 0:ca5a0fee9f52 3 * Debounces an interrupt
kandangath 0:ca5a0fee9f52 4 */
kandangath 0:ca5a0fee9f52 5
kandangath 0:ca5a0fee9f52 6 #ifndef DEBOUNCE_INTERRUPTS_H
kandangath 0:ca5a0fee9f52 7 #define DEBOUNCE_INTERRUPTS_H
kandangath 0:ca5a0fee9f52 8
kandangath 0:ca5a0fee9f52 9 #include <stdint.h>
kandangath 0:ca5a0fee9f52 10 #include "mbed.h"
kandangath 0:ca5a0fee9f52 11
kandangath 0:ca5a0fee9f52 12 class DebounceInterrupts {
kandangath 0:ca5a0fee9f52 13 private:
kandangath 0:ca5a0fee9f52 14 unsigned int fDebounce_us;
kandangath 0:ca5a0fee9f52 15 void (*fCallback)(void);
kandangath 0:ca5a0fee9f52 16 void onInterrupt(void);
kandangath 0:ca5a0fee9f52 17 public:
kandangath 0:ca5a0fee9f52 18 /** Setup debounce for an InterruptIn.
kandangath 0:ca5a0fee9f52 19 * fptr: pointer to function to be called when debounced Interrupt fires
kandangath 0:ca5a0fee9f52 20 * interrupt: InterruptIn to monitor
kandangath 0:ca5a0fee9f52 21 * rise: true:rise, false: fall
kandangath 0:ca5a0fee9f52 22 * debounce_ms: milliseconds to wait for a stable input
kandangath 0:ca5a0fee9f52 23 * @return Pull the oldest element from the buffer
kandangath 0:ca5a0fee9f52 24 */
kandangath 0:ca5a0fee9f52 25 DebounceInterrupts(void (*fptr)(void), InterruptIn *interrupt, const bool& rise=true, const uint32_t& debounce_ms=10);
kandangath 0:ca5a0fee9f52 26 ~DebounceInterrupts();
kandangath 0:ca5a0fee9f52 27 };
kandangath 0:ca5a0fee9f52 28 #endif