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4180Lab2Part10
Fork of speaker_demo_PWM by
Diff: main.cpp
- Revision:
- 0:b2fdf3770282
- Child:
- 1:2e6ea42675c7
- Child:
- 2:68eee0fb2026
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sun Jan 20 03:02:37 2013 +0000 @@ -0,0 +1,19 @@ +#include "mbed.h" +#include "Speaker.h" + +// Speaker test program - euro police style siren now using new Speaker class method +// for documentation see http://mbed.org/users/4180_1/notebook/using-a-speaker-for-audio-output/ +// can also be used to play a song, if you have the notes and durations +// for musical note frequencies see http://en.wikipedia.org/wiki/Piano_key_frequencies + +int main() +{ +// setup instance of new Speaker class, mySpeaker using pin 21 +// the pin must be a PWM output pin + Speaker mySpeaker(p21); + // loops forever playing two notes on speaker + while(1) { + mySpeaker.PlayNote(969.0,0.5,0.5); + mySpeaker.PlayNote(800.0,0.5,0.5); + } +}