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4180Lab2Part10
Fork of speaker_demo_PWM by
main.cpp
- Committer:
- 4180_1
- Date:
- 2014-10-21
- Revision:
- 1:2e6ea42675c7
- Parent:
- 0:b2fdf3770282
File content as of revision 1:2e6ea42675c7:
#include "mbed.h" #include "SongPlayer.h" // Song test program - plays a song using PWM and timer interrupts // for documentation see http://mbed.org/users/4180_1/notebook/using-a-speaker-for-audio-output/ // can 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 //Set up notes and durations for sample song to play // A 0.0 duration note at end terminates song play float note[18]= {1568.0,1396.9,1244.5,1244.5,1396.9,1568.0,1568.0,1568.0,1396.9, 1244.5,1396.9,1568.0,1396.9,1244.5,1174.7,1244.5,1244.5, 0.0 }; float duration[18]= {0.48,0.24,0.72,0.48,0.24,0.48,0.24,0.24,0.24, 0.24,0.24,0.24,0.24,0.48,0.24,0.48,0.48, 0.0 }; DigitalOut led1(LED1); int main() { // setup instance of new SongPlayer class, mySpeaker using pin 26 // the pin must be a PWM output pin SongPlayer mySpeaker(p26); // Start song and return once playing starts mySpeaker.PlaySong(note,duration); // loops forever while song continues to play to end using interrupts while(1) { led1 = !led1; wait(.1); } }