Revision 0:41292907c9cb, committed 2013-02-12

Comitter:

zchen311

Date:

Tue Feb 12 06:24:02 2013 +0000

Commit message:

Changed in this revision

diff -r 000000000000 -r 41292907c9cb Speaker.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Speaker.h	Tue Feb 12 06:24:02 2013 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+// new class to play a note on Speaker based on PwmOut class
+class Speaker
+{
+public:
+    Speaker(PinName pin) : _pin(pin) {
+// _pin(pin) means pass pin to the Speaker Constructor
+    }
+// class method to play a note based on PwmOut class
+    void PlayNote(float frequency, float duration, float volume) {
+        _pin.period(1.0/frequency);
+        _pin = volume/2.0;
+        wait(duration);
+        _pin = 0.0;
+    }
+ 
+private:
+    PwmOut _pin;
+};
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