Lab 3 Part 4
Dependencies: mbed wave_player mbed-rtos 4DGL-uLCD-SE SDFileSystem
Speaker.h@12:94b16c66c09a, 2021-02-25 (annotated)
- Committer:
- glanier9
- Date:
- Thu Feb 25 18:30:28 2021 +0000
- Revision:
- 12:94b16c66c09a
Version 1. Logic for Bluetooth not working.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
glanier9 | 12:94b16c66c09a | 1 | #include "mbed.h" |
glanier9 | 12:94b16c66c09a | 2 | // a new class to play a note on Speaker based on PwmOut class |
glanier9 | 12:94b16c66c09a | 3 | class Speaker |
glanier9 | 12:94b16c66c09a | 4 | { |
glanier9 | 12:94b16c66c09a | 5 | public: |
glanier9 | 12:94b16c66c09a | 6 | Speaker(PinName pin) : _pin(pin) { |
glanier9 | 12:94b16c66c09a | 7 | // _pin(pin) means pass pin to the Speaker Constructor |
glanier9 | 12:94b16c66c09a | 8 | } |
glanier9 | 12:94b16c66c09a | 9 | // class method to play a note based on PwmOut class |
glanier9 | 12:94b16c66c09a | 10 | void PlayNote(float frequency, float duration, float volume) { |
glanier9 | 12:94b16c66c09a | 11 | _pin.period(1.0/frequency); |
glanier9 | 12:94b16c66c09a | 12 | _pin = volume/2.0; |
glanier9 | 12:94b16c66c09a | 13 | wait(duration); |
glanier9 | 12:94b16c66c09a | 14 | _pin = 0.0; |
glanier9 | 12:94b16c66c09a | 15 | } |
glanier9 | 12:94b16c66c09a | 16 | |
glanier9 | 12:94b16c66c09a | 17 | private: |
glanier9 | 12:94b16c66c09a | 18 | PwmOut _pin; |
glanier9 | 12:94b16c66c09a | 19 | }; |