2036 mbed lab4
Dependencies: 4DGL-uLCD-SE PinDetect
Speaker.h@0:bbda88bee65a, 2022-03-28 (annotated)
- Committer:
- lhanks02
- Date:
- Mon Mar 28 18:44:30 2022 +0000
- Revision:
- 0:bbda88bee65a
lab4
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lhanks02 | 0:bbda88bee65a | 1 | #include "mbed.h" |
lhanks02 | 0:bbda88bee65a | 2 | // new class to play a note on Speaker based on PwmOut class |
lhanks02 | 0:bbda88bee65a | 3 | class Speaker |
lhanks02 | 0:bbda88bee65a | 4 | { |
lhanks02 | 0:bbda88bee65a | 5 | public: |
lhanks02 | 0:bbda88bee65a | 6 | Speaker(PinName pin) : _pin(pin) { |
lhanks02 | 0:bbda88bee65a | 7 | // _pin(pin) means pass pin to the Speaker Constructor |
lhanks02 | 0:bbda88bee65a | 8 | } |
lhanks02 | 0:bbda88bee65a | 9 | // class method to play a note based on PwmOut class |
lhanks02 | 0:bbda88bee65a | 10 | void PlayNote(float frequency, float duration, float volume) { |
lhanks02 | 0:bbda88bee65a | 11 | _pin.period(1.0/frequency); |
lhanks02 | 0:bbda88bee65a | 12 | _pin = volume/2.0; |
lhanks02 | 0:bbda88bee65a | 13 | wait(duration); |
lhanks02 | 0:bbda88bee65a | 14 | _pin = 0.0; |
lhanks02 | 0:bbda88bee65a | 15 | } |
lhanks02 | 0:bbda88bee65a | 16 | |
lhanks02 | 0:bbda88bee65a | 17 | private: |
lhanks02 | 0:bbda88bee65a | 18 | PwmOut _pin; |
lhanks02 | 0:bbda88bee65a | 19 | }; |