Plays a song using PWM and timer interrupts. Returns once song starts.
Fork of speaker_demo_PWM by
Diff: Speaker.h
- Revision:
- 0:b2fdf3770282
diff -r 000000000000 -r b2fdf3770282 Speaker.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Speaker.h Sun Jan 20 03:02:37 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; +}; \ No newline at end of file