Jae Kyung Han / Mbed 2 deprecated MorseCode

Generate Morse code using console text input and output to LED and speaker.

Dependencies:   4DGL-uLCD-SE PinDetect mbed

https://mbed.org/users/jkhan/notebook/morse-code/

Speaker.h@0:277b4be8e03c, 2014-03-05 (annotated)

Committer:
jkhan
Date:
Wed Mar 05 18:05:59 2014 +0000
Revision:
0:277b4be8e03c
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jkhan 0:277b4be8e03c 1 #include "mbed.h"
jkhan 0:277b4be8e03c 2 // new class to play a note on Speaker based on PwmOut class
jkhan 0:277b4be8e03c 3 class Speaker
jkhan 0:277b4be8e03c 4 {
jkhan 0:277b4be8e03c 5 public:
jkhan 0:277b4be8e03c 6 Speaker(PinName pin) : _pin(pin)
jkhan 0:277b4be8e03c 7 {
jkhan 0:277b4be8e03c 8 // _pin(pin) means pass pin to the Speaker Constructor
jkhan 0:277b4be8e03c 9 }
jkhan 0:277b4be8e03c 10
jkhan 0:277b4be8e03c 11 // class method to play a note based on PwmOut class
jkhan 0:277b4be8e03c 12 void PlayNote(float frequency, float duration, float volume)
jkhan 0:277b4be8e03c 13 {
jkhan 0:277b4be8e03c 14 _pin.period(1.0/frequency); // higher number = more base
jkhan 0:277b4be8e03c 15 _pin = volume/2.0; // higher number = more weird treble
jkhan 0:277b4be8e03c 16 wait(duration);
jkhan 0:277b4be8e03c 17 _pin = 0.0;
jkhan 0:277b4be8e03c 18 }
jkhan 0:277b4be8e03c 19
jkhan 0:277b4be8e03c 20 private:
jkhan 0:277b4be8e03c 21 PwmOut _pin;
jkhan 0:277b4be8e03c 22 };