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Debounce InterruptIn

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API Documentation at this revision

Revision 14:da09706b92f5, committed 2014-02-18

Comitter:
kandangath
Date:
Tue Feb 18 17:26:42 2014 +0000
Parent:
13:09b53a088a9c
Child:
15:948e85b22efe
Commit message:
Also poll pin value at the end of the debounce period

Changed in this revision

DebouncedInterrupt.cpp Show annotated file Show diff for this revision Revisions of this file
DebouncedInterrupt.h Show annotated file Show diff for this revision Revisions of this file 
--- a/DebouncedInterrupt.cpp	Tue Feb 18 16:51:44 2014 +0000
+++ b/DebouncedInterrupt.cpp	Tue Feb 18 17:26:42 2014 +0000
@@ -8,10 +8,13 @@
 DebouncedInterrupt::DebouncedInterrupt(PinName pin)
 {
     _in = new InterruptIn(pin);
+    _din = new DigitalIn(pin);
 }
 
 DebouncedInterrupt::~DebouncedInterrupt()
 {
+    delete _in;
+    delete _din;
 }
 
 void DebouncedInterrupt::attach(void (*fptr)(void), 
@@ -51,7 +54,9 @@
 {
     _last_bounce_count = _bounce_count;
     _bounce_count = 0;
-    fCallback();
+    if(_din) {
+        fCallback();
+    }
 }
 
 void DebouncedInterrupt::_onInterrupt()

--- a/DebouncedInterrupt.h	Tue Feb 18 16:51:44 2014 +0000
+++ b/DebouncedInterrupt.h	Tue Feb 18 17:26:42 2014 +0000
@@ -36,6 +36,7 @@
 private:
     unsigned int _debounce_us;
     InterruptIn *_in;
+    DigitalIn *_din;
     
     // Diagnostics
     volatile unsigned int _bounce_count;