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) {}
}

Diff: DebouncedInterrupt.h

Revision:
18:e6e9bc6402b7
Parent:
17:96a51b236ba0
Child:
20:996ea2fc8d2d
--- a/DebouncedInterrupt.h	Tue Feb 18 20:38:50 2014 +0000
+++ b/DebouncedInterrupt.h	Wed Feb 19 01:47:45 2014 +0000
@@ -15,7 +15,7 @@
  * 
  * int main()
  * {
- *     up_button.attach(&onUp, 100);
+ *     up_button.attach(&onUp,IRQ_FALL, 100);
  *     while(1) {
  *         ...
  *     }
@@ -29,11 +29,20 @@
 #include <stdint.h>
 #include "mbed.h"
 
+/**
+typedef enum {
+    IRQ_NONE,
+    IRQ_RISE,
+    IRQ_FALL
+} gpio_irq_event;
+**/
+
 class DebouncedInterrupt {
 private:
     unsigned int _debounce_us;
     InterruptIn *_in;
     DigitalIn *_din;
+    gpio_irq_event _trigger;
     
     // Diagnostics
     volatile unsigned int _bounce_count;
@@ -47,7 +56,7 @@
     ~DebouncedInterrupt();
     
     // Start monitoring the interupt and attach a callback
-    void attach(void (*fptr)(void), const uint32_t& debounce_ms=10);
+    void attach(void (*fptr)(void), const gpio_irq_event trigger, const uint32_t& debounce_ms=10);
    
     // Stop monitoring the interrupt
     void reset();