Chumbaka
Dependencies: Servo mbed Chumbaka_backup
Fork of Servo_HelloWorld by
Speaker/Speaker.h@7:5a56972596b9, 2014-09-26 (annotated)
- Committer:
- limcheecheng
- Date:
- Fri Sep 26 08:15:12 2014 +0000
- Revision:
- 7:5a56972596b9
- Parent:
- 5:805d37469e22
Commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
limcheecheng | 5:805d37469e22 | 1 | #include "mbed.h" |
limcheecheng | 5:805d37469e22 | 2 | // new class to play a note on Speaker based on PwmOut class |
limcheecheng | 4:4e2ad2aa99b7 | 3 | class Speaker |
limcheecheng | 4:4e2ad2aa99b7 | 4 | { |
limcheecheng | 4:4e2ad2aa99b7 | 5 | public: |
limcheecheng | 4:4e2ad2aa99b7 | 6 | Speaker(PinName pin) : _pin(pin) { |
limcheecheng | 4:4e2ad2aa99b7 | 7 | // _pin(pin) means pass pin to the Speaker Constructor |
limcheecheng | 4:4e2ad2aa99b7 | 8 | } |
limcheecheng | 5:805d37469e22 | 9 | // class method to play a note based on PwmOut class |
limcheecheng | 4:4e2ad2aa99b7 | 10 | void PlayNote(float frequency, float duration, float volume) { |
limcheecheng | 5:805d37469e22 | 11 | _pin.period(1.0/frequency); |
limcheecheng | 5:805d37469e22 | 12 | _pin = volume/2.0; |
limcheecheng | 4:4e2ad2aa99b7 | 13 | wait(duration); |
limcheecheng | 5:805d37469e22 | 14 | _pin = 0.0; |
limcheecheng | 4:4e2ad2aa99b7 | 15 | } |
limcheecheng | 4:4e2ad2aa99b7 | 16 | |
limcheecheng | 5:805d37469e22 | 17 | private: |
limcheecheng | 5:805d37469e22 | 18 | PwmOut _pin; |
limcheecheng | 5:805d37469e22 | 19 | }; |