Plays the happy birthday song music on the speaker.

Dependencies:   DebounceInterrupts mbed

Revision:
0:33ad8330e62d
diff -r 000000000000 -r 33ad8330e62d DebouncedIn.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DebouncedIn.h	Tue Jun 10 21:53:29 2014 +0000
@@ -0,0 +1,31 @@
+#include "mbed.h"
+
+    class DebouncedIn {
+        public:      
+             DebouncedIn(PinName in);
+
+             int read (void);
+             operator int();
+              
+             int rising(void);
+             int falling(void);
+             int steady(void);
+              
+        private :    
+               // objects
+               DigitalIn _in;    
+               Ticker _ticker;
+
+               // function to take a sample, and update flags
+               void _sample(void);
+
+               // counters and flags
+               int _samples;
+               int _output;
+               int _output_last;
+               int _rising_flag;
+               int _falling_flag;
+               int _state_counter;
+
+    };
+    
\ No newline at end of file