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: DebounceInterrupts.h

Revision:
0:ca5a0fee9f52
Child:
1:ffacad1b455a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DebounceInterrupts.h	Tue Feb 18 01:05:10 2014 +0000
@@ -0,0 +1,28 @@
+
+/**
+ * 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
\ No newline at end of file