4180 / Mbed 2 deprecated 4180_asteroids

Asteroids for MBED game with Bluetooth LE UART Friend Controller, uLCD, speaker, and uSD.

Dependencies:   4DGL-uLCD-SE mbed-rtos mbed

Asteroids for MBED game with Bluetooth LE UART Friend Controller

SongPlayer.h@8:14617a579078, 2016-03-12 (annotated)

Committer:
agamemaker
Date:
Sat Mar 12 18:51:28 2016 +0000
Revision:
8:14617a579078
sp.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
agamemaker 8:14617a579078 1 #include "mbed.h"
agamemaker 8:14617a579078 2 // new class to play a note on Speaker based on PwmOut class
agamemaker 8:14617a579078 3 class SongPlayer
agamemaker 8:14617a579078 4 {
agamemaker 8:14617a579078 5 public:
agamemaker 8:14617a579078 6 SongPlayer(PinName pin) : _pin(pin) {
agamemaker 8:14617a579078 7 // _pin(pin) means pass pin to the constructor
agamemaker 8:14617a579078 8 }
agamemaker 8:14617a579078 9 // class method to play a note based on PwmOut class
agamemaker 8:14617a579078 10 void PlaySong(float frequency[], float duration[], float volume=1.0) {
agamemaker 8:14617a579078 11 vol = volume;
agamemaker 8:14617a579078 12 notecount = 0;
agamemaker 8:14617a579078 13 _pin.period(1.0/frequency[notecount]);
agamemaker 8:14617a579078 14 _pin = volume/2.0;
agamemaker 8:14617a579078 15 noteduration.attach(this,&SongPlayer::nextnote, duration[notecount]);
agamemaker 8:14617a579078 16 // setup timer to interrupt for next note to play
agamemaker 8:14617a579078 17 frequencyptr = frequency;
agamemaker 8:14617a579078 18 durationptr = duration;
agamemaker 8:14617a579078 19 //returns after first note starts to play
agamemaker 8:14617a579078 20 }
agamemaker 8:14617a579078 21 void nextnote();
agamemaker 8:14617a579078 22 private:
agamemaker 8:14617a579078 23 Timeout noteduration;
agamemaker 8:14617a579078 24 PwmOut _pin;
agamemaker 8:14617a579078 25 int notecount;
agamemaker 8:14617a579078 26 float vol;
agamemaker 8:14617a579078 27 float * frequencyptr;
agamemaker 8:14617a579078 28 float * durationptr;
agamemaker 8:14617a579078 29 };
agamemaker 8:14617a579078 30 //Interrupt Routine to play next note
agamemaker 8:14617a579078 31 void SongPlayer::nextnote()
agamemaker 8:14617a579078 32 {
agamemaker 8:14617a579078 33 _pin = 0.0;
agamemaker 8:14617a579078 34 notecount++; //setup next note in song
agamemaker 8:14617a579078 35 if (durationptr[notecount]!=0.0) {
agamemaker 8:14617a579078 36 _pin.period(1.0/frequencyptr[notecount]);
agamemaker 8:14617a579078 37 noteduration.attach(this,&SongPlayer::nextnote, durationptr[notecount]);
agamemaker 8:14617a579078 38 _pin = vol/2.0;
agamemaker 8:14617a579078 39 } else
agamemaker 8:14617a579078 40 _pin = 0.0; //turn off on last note
agamemaker 8:14617a579078 41 }