ECE 4180 / Mbed 2 deprecated 4180-L3-P2_EC-Theramin

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Dependencies:   mbed HC_SR04_Ultrasonic_Library

Speaker.h@0:0c8930416cda, 2021-03-06 (annotated)

Committer:
glanier9
Date:
Sat Mar 06 18:40:19 2021 +0000
Revision:
0:0c8930416cda
Final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
glanier9 0:0c8930416cda 1 #include "mbed.h"
glanier9 0:0c8930416cda 2 // a new class to play a note on Speaker based on PwmOut class
glanier9 0:0c8930416cda 3 class Speaker
glanier9 0:0c8930416cda 4 {
glanier9 0:0c8930416cda 5 public:
glanier9 0:0c8930416cda 6 Speaker(PinName pin) : _pin(pin) {
glanier9 0:0c8930416cda 7 // _pin(pin) means pass pin to the Speaker Constructor
glanier9 0:0c8930416cda 8 }
glanier9 0:0c8930416cda 9 // class method to play a note based on PwmOut class
glanier9 0:0c8930416cda 10 void PlayNote(float frequency, float duration, float volume) {
glanier9 0:0c8930416cda 11 _pin.period(1.0/frequency);
glanier9 0:0c8930416cda 12 _pin = volume/2.0;
glanier9 0:0c8930416cda 13 wait(duration);
glanier9 0:0c8930416cda 14 _pin = 0.0;
glanier9 0:0c8930416cda 15 }
glanier9 0:0c8930416cda 16
glanier9 0:0c8930416cda 17 private:
glanier9 0:0c8930416cda 18 PwmOut _pin;
glanier9 0:0c8930416cda 19 };