hye min cha / Mbed 2 deprecated 4180_lab4_bigfishgame

big fish game

Dependencies:   4DGL-uLCD-SE FatFileSystem MPR121_Demo SDFileSystem mbed wave_player

SongPlayer.h@0:eabfe3700dd6, 2016-03-17 (annotated)

Committer:
hcha30
Date:
Thu Mar 17 17:03:46 2016 +0000
Revision:
0:eabfe3700dd6
big fish game

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hcha30 0:eabfe3700dd6 1 #include "mbed.h"
hcha30 0:eabfe3700dd6 2 // new class to play a note on Speaker based on PwmOut class
hcha30 0:eabfe3700dd6 3 class SongPlayer
hcha30 0:eabfe3700dd6 4 {
hcha30 0:eabfe3700dd6 5 public:
hcha30 0:eabfe3700dd6 6 SongPlayer(PinName pin) : _pin(pin) {
hcha30 0:eabfe3700dd6 7 // _pin(pin) means pass pin to the constructor
hcha30 0:eabfe3700dd6 8 }
hcha30 0:eabfe3700dd6 9 // class method to play a note based on PwmOut class
hcha30 0:eabfe3700dd6 10 void PlaySong(float frequency[], float duration[], float volume=1.0) {
hcha30 0:eabfe3700dd6 11 vol = volume;
hcha30 0:eabfe3700dd6 12 notecount = 0;
hcha30 0:eabfe3700dd6 13 _pin.period(1.0/frequency[notecount]);
hcha30 0:eabfe3700dd6 14 _pin = volume/2.0;
hcha30 0:eabfe3700dd6 15 noteduration.attach(this,&SongPlayer::nextnote, duration[notecount]);
hcha30 0:eabfe3700dd6 16 // setup timer to interrupt for next note to play
hcha30 0:eabfe3700dd6 17 frequencyptr = frequency;
hcha30 0:eabfe3700dd6 18 durationptr = duration;
hcha30 0:eabfe3700dd6 19 //returns after first note starts to play
hcha30 0:eabfe3700dd6 20 }
hcha30 0:eabfe3700dd6 21 void nextnote();
hcha30 0:eabfe3700dd6 22 private:
hcha30 0:eabfe3700dd6 23 Timeout noteduration;
hcha30 0:eabfe3700dd6 24 PwmOut _pin;
hcha30 0:eabfe3700dd6 25 int notecount;
hcha30 0:eabfe3700dd6 26 float vol;
hcha30 0:eabfe3700dd6 27 float * frequencyptr;
hcha30 0:eabfe3700dd6 28 float * durationptr;
hcha30 0:eabfe3700dd6 29 };
hcha30 0:eabfe3700dd6 30 //Interrupt Routine to play next note
hcha30 0:eabfe3700dd6 31 void SongPlayer::nextnote()
hcha30 0:eabfe3700dd6 32 {
hcha30 0:eabfe3700dd6 33 _pin = 0.0;
hcha30 0:eabfe3700dd6 34 notecount++; //setup next note in song
hcha30 0:eabfe3700dd6 35 if (durationptr[notecount]!=0.0) {
hcha30 0:eabfe3700dd6 36 _pin.period(1.0/frequencyptr[notecount]);
hcha30 0:eabfe3700dd6 37 noteduration.attach(this,&SongPlayer::nextnote, durationptr[notecount]);
hcha30 0:eabfe3700dd6 38 _pin = vol/2.0;
hcha30 0:eabfe3700dd6 39 } else
hcha30 0:eabfe3700dd6 40 _pin = 0.0; //turn off on last note
hcha30 0:eabfe3700dd6 41 }