hope this works
Dependencies: 4DGL-uLCD-SE PinDetect mbed-rtos mbed
Speaker.h@0:4322dd0d6f9f, 2016-02-29 (annotated)
- Committer:
- jbaker66
- Date:
- Mon Feb 29 18:04:52 2016 +0000
- Revision:
- 0:4322dd0d6f9f
hey george;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jbaker66 | 0:4322dd0d6f9f | 1 | #include "mbed.h" |
jbaker66 | 0:4322dd0d6f9f | 2 | // a new class to play a note on Speaker based on PwmOut class |
jbaker66 | 0:4322dd0d6f9f | 3 | class Speaker |
jbaker66 | 0:4322dd0d6f9f | 4 | { |
jbaker66 | 0:4322dd0d6f9f | 5 | public: |
jbaker66 | 0:4322dd0d6f9f | 6 | Speaker(PinName pin) : _pin(pin) { |
jbaker66 | 0:4322dd0d6f9f | 7 | // _pin(pin) means pass pin to the Speaker Constructor |
jbaker66 | 0:4322dd0d6f9f | 8 | } |
jbaker66 | 0:4322dd0d6f9f | 9 | // class method to play a note based on PwmOut class |
jbaker66 | 0:4322dd0d6f9f | 10 | void PlayNote(float frequency, float duration, float volume) { |
jbaker66 | 0:4322dd0d6f9f | 11 | _pin.period(1.0/frequency); |
jbaker66 | 0:4322dd0d6f9f | 12 | _pin = volume/2.0; |
jbaker66 | 0:4322dd0d6f9f | 13 | wait(duration); |
jbaker66 | 0:4322dd0d6f9f | 14 | _pin = 0.0; |
jbaker66 | 0:4322dd0d6f9f | 15 | } |
jbaker66 | 0:4322dd0d6f9f | 16 | |
jbaker66 | 0:4322dd0d6f9f | 17 | private: |
jbaker66 | 0:4322dd0d6f9f | 18 | PwmOut _pin; |
jbaker66 | 0:4322dd0d6f9f | 19 | }; |