Josh Williams / Mbed 2 deprecated lab4

Sonar Proximity Audio Alert for Robot

Dependencies:   HC_SR04_Ultrasonic_Library Motor mbed-rtos mbed

Fork of rtos_basic by mbed official

Speaker.h

Committer:
juubs
Date:
2017-03-13
Revision:
12:42d63181dbdb

File content as of revision 12:42d63181dbdb:

#include "mbed.h"
// a 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;
};