Diff: Pswitch.cpp

Revision:

0:0bc10e1c0685

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Pswitch.cpp	Thu Dec 23 07:46:37 2010 +0000
@@ -0,0 +1,52 @@
+
+
+#include "Pswitch.h"
+ #include "mbed.h"
+ 
+ /*
+  * Constructor
+  */
+ Pswitch::Pswitch(PinName in) 
+     : _in(in) {    
+         
+     // reset all the flags and counters    
+     _samples = 0;
+     _output = 0;
+     _output_last = 0;
+     _rising_flag = 0;
+     
+     // Attach ticker
+     _ticker.attach(this, &Pswitch::_sample, 0.005);     
+ }
+   
+ void Pswitch::_sample() {
+ 
+
+	_output_last = _output;
+	_output = _in;
+	if (!_output && _output_last)
+	{
+		_rising_flag++;
+	}
+
+}
+
+ 
+ 
+ 
+ // return number of rising edges
+ int Pswitch::count(void) {
+     int return_value = _rising_flag; 
+     _rising_flag = 0;
+     return(return_value);
+ }
+ 
+ // return the debounced status
+ int Pswitch::read(void) {
+     return(_in);
+ }
+ 
+ // shorthand for read()
+ Pswitch::operator int() {
+     return read();
+ }