Lab 3 Part 4
Dependencies: mbed wave_player mbed-rtos 4DGL-uLCD-SE SDFileSystem
Diff: Speaker.h
- Revision:
- 12:94b16c66c09a
diff -r 0309bef74ba8 -r 94b16c66c09a Speaker.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Speaker.h Thu Feb 25 18:30:28 2021 +0000 @@ -0,0 +1,19 @@ +#include "mbed.h" +// a new class to play a note on Speaker based on PwmOut class +class Speaker +{ +public: + Speaker(PinName pin) : _pin(pin) { +// _pin(pin) means pass pin to the Speaker Constructor + } +// class method to play a note based on PwmOut class + void PlayNote(float frequency, float duration, float volume) { + _pin.period(1.0/frequency); + _pin = volume/2.0; + wait(duration); + _pin = 0.0; + } + +private: + PwmOut _pin; +}; \ No newline at end of file