hey
Dependencies: 4DGL-uLCD-SE PinDetect SDFileSystem mbed-rtos mbed wave_player
Fork of 4180_Lab4_v6 by
Speaker.h@0:9f1095365b9a, 2016-10-29 (annotated)
- Committer:
- swilliams346
- Date:
- Sat Oct 29 22:15:03 2016 +0000
- Revision:
- 0:9f1095365b9a
10/29/2016
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
swilliams346 | 0:9f1095365b9a | 1 | #include "mbed.h" |
swilliams346 | 0:9f1095365b9a | 2 | // new class to play a note on Speaker based on PwmOut class |
swilliams346 | 0:9f1095365b9a | 3 | class Speaker |
swilliams346 | 0:9f1095365b9a | 4 | { |
swilliams346 | 0:9f1095365b9a | 5 | public: |
swilliams346 | 0:9f1095365b9a | 6 | Speaker(PinName pin) : _pin(pin) { |
swilliams346 | 0:9f1095365b9a | 7 | // _pin(pin) means pass pin to the Speaker Constructor |
swilliams346 | 0:9f1095365b9a | 8 | } |
swilliams346 | 0:9f1095365b9a | 9 | // class method to play a note based on PwmOut class |
swilliams346 | 0:9f1095365b9a | 10 | void PlayNote(float frequency, float duration, float volume) { |
swilliams346 | 0:9f1095365b9a | 11 | _pin.period(1.0/frequency); |
swilliams346 | 0:9f1095365b9a | 12 | _pin = volume/2.0; |
swilliams346 | 0:9f1095365b9a | 13 | wait(duration); |
swilliams346 | 0:9f1095365b9a | 14 | _pin = 0.0; |
swilliams346 | 0:9f1095365b9a | 15 | } |
swilliams346 | 0:9f1095365b9a | 16 | |
swilliams346 | 0:9f1095365b9a | 17 | private: |
swilliams346 | 0:9f1095365b9a | 18 | PwmOut _pin; |
swilliams346 | 0:9f1095365b9a | 19 | }; |