jim hamblen / Mbed 2 deprecated song_demo_PWM

Plays a song using PWM and timer interrupts. Returns once song starts.

Dependencies:   mbed

Fork of speaker_demo_PWM by jim hamblen

Speaker.h

Committer:
4180_1
Date:
2013-01-20
Revision:
0:b2fdf3770282

File content as of revision 0:b2fdf3770282:

#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;
};