complete
Dependencies: 4DGL-uLCD-SE PinDetect mbed
Fork of my2036lab2robotLCD by
Speaker.h@0:343fbeea672c, 2015-01-23 (annotated)
- Committer:
- 4180_1
- Date:
- Fri Jan 23 13:47:32 2015 +0000
- Revision:
- 0:343fbeea672c
ver 1.0
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
4180_1 | 0:343fbeea672c | 1 | #include "mbed.h" |
4180_1 | 0:343fbeea672c | 2 | // new class to play a note on Speaker based on PwmOut class |
4180_1 | 0:343fbeea672c | 3 | class Speaker |
4180_1 | 0:343fbeea672c | 4 | { |
4180_1 | 0:343fbeea672c | 5 | public: |
4180_1 | 0:343fbeea672c | 6 | Speaker(PinName pin) : _pin(pin) { |
4180_1 | 0:343fbeea672c | 7 | // _pin(pin) means pass pin to the Speaker Constructor |
4180_1 | 0:343fbeea672c | 8 | } |
4180_1 | 0:343fbeea672c | 9 | // class method to play a note based on PwmOut class |
4180_1 | 0:343fbeea672c | 10 | void PlayNote(float frequency, float duration, float volume) { |
4180_1 | 0:343fbeea672c | 11 | _pin.period(1.0/frequency); |
4180_1 | 0:343fbeea672c | 12 | _pin = volume/2.0; |
4180_1 | 0:343fbeea672c | 13 | wait(duration); |
4180_1 | 0:343fbeea672c | 14 | _pin = 0.0; |
4180_1 | 0:343fbeea672c | 15 | } |
4180_1 | 0:343fbeea672c | 16 | |
4180_1 | 0:343fbeea672c | 17 | private: |
4180_1 | 0:343fbeea672c | 18 | PwmOut _pin; |
4180_1 | 0:343fbeea672c | 19 | }; |