Aaron S / Mbed 2 deprecated Lab4

Words

Dependencies:   4DGL-uLCD-SE PinDetect SDFileSystem mbed

Speaker.h@1:3cf69c15ada7, 2017-03-02 (annotated)

Committer:
apaks180
Date:
Thu Mar 02 19:45:19 2017 +0000
Revision:
1:3cf69c15ada7
Parent:
0:0072ee664a9b 
Final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
apaks180 0:0072ee664a9b 1 #include "mbed.h"
apaks180 0:0072ee664a9b 2 // new class to play a note on Speaker based on PwmOut class
apaks180 0:0072ee664a9b 3 class Speaker
apaks180 0:0072ee664a9b 4 {
apaks180 0:0072ee664a9b 5 public:
apaks180 0:0072ee664a9b 6 Speaker(PinName pin) : _pin(pin) {
apaks180 0:0072ee664a9b 7 // _pin(pin) means pass pin to the Speaker Constructor
apaks180 0:0072ee664a9b 8 }
apaks180 0:0072ee664a9b 9 // class method to play a note based on PwmOut class
apaks180 0:0072ee664a9b 10 void PlayNote(float frequency, float duration, float volume) {
apaks180 0:0072ee664a9b 11 _pin.period(1.0/frequency);
apaks180 0:0072ee664a9b 12 _pin = volume/2.0;
apaks180 0:0072ee664a9b 13 wait(duration);
apaks180 0:0072ee664a9b 14 _pin = 0.0;
apaks180 0:0072ee664a9b 15 }
apaks180 0:0072ee664a9b 16
apaks180 0:0072ee664a9b 17 private:
apaks180 0:0072ee664a9b 18 PwmOut _pin;
apaks180 0:0072ee664a9b 19 };