Rachel Huang / Mbed 2 deprecated electric_piano

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Dependencies:   mbed wave_player mbed-rtos 4DGL-uLCD-SE SDFileSystem FATFileSystem

Speaker.h

Committer:
rhuang77
Date:
2019-04-12
Revision:
0:567492543056

File content as of revision 0:567492543056:

#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;
};