Audio.cpp

00001 #include "Audio.h"
00002 
00003 extern Serial dbg;
00004 
00005 double nada[10] = {0, 247, 262, 294, 330, 349, 392, 440, 494, 523};
00006 //double nadas[16] = { 6, 6, 0, 6,
00007 //                     0, 4, 6, 0,
00008 //                     8, 0, 0, 0,
00009 //                     1, 0, 0, 0 };
00010 //                     
00011 unsigned int nadas[8] = { 1, 2, 3, 4,
00012                      5, 6, 7, 8 };
00013                      
00014 Audio::Audio(PinName buzzer): _out(buzzer)
00015 {
00016 }
00017     
00018 void Audio::SetVolume(double volume)
00019 {
00020     vol = volume;
00021 }   
00022 
00023 void Audio::SetDuration(unsigned int milisec)
00024 {
00025     ms = milisec;
00026 }
00027         
00028 void Audio::PlayNote(unsigned int angka)
00029 {
00030     if(angka > 8) angka -= 8;
00031     
00032     double Nada = nada[angka];
00033     PlayNote(Nada*4.24, ms, vol);
00034 }
00035 
00036 void Audio::mute()
00037 {
00038     DigitalOut *out = new DigitalOut(_out);
00039     out->write(0);
00040     delete out;
00041 }
00042 
00043 void Audio::PlayNote(double frequency, double duration, double volume)
00044 {
00045     PwmOut *out = new PwmOut(_out);
00046     out->period(1.0/frequency);
00047     out->write(volume/2.0);
00048     wait_ms(duration);
00049     out->write(0.0);
00050     delete out;
00051 }
00052 
00053 // -----------------------------------------------------------------------------
00054 MyAudio::MyAudio(PinName buzz) : Audio (buzz)
00055 {}
00056 
00057 void MyAudio::play(const int &code)
00058 {
00059     switch(code)
00060     {
00061         case 0 :
00062             mute();
00063             break;
00064         case 1 :
00065             playing(6);
00066             set();
00067             playing(1);
00068             set();
00069             mute();
00070             break;
00071         case 2 :
00072             
00073 //            break;
00074         case 3 :
00075             
00076 //            break;
00077         case 4 :
00078             set();
00079             playing(1);
00080             break;
00081         case 5 :
00082             set();
00083             for(int i=0; i<3; i++)playing(4);
00084             break;
00085         default:
00086             set(100, 0.5);
00087             for(int j=0; j<8; j++)
00088             {
00089                 playing(nadas[j]);
00090             }
00091             set();
00092             mute();
00093             break;
00094     }
00095 }
00096 
00097 void MyAudio::set(double dur, double vol)
00098 {
00099     Audio::SetVolume(vol);
00100     Audio::SetDuration(dur);
00101 }
00102 
00103 void MyAudio::playing(unsigned int note)
00104 {
00105     Audio::PlayNote(note);
00106 }
00107 
00108 void MyAudio::mute()
00109 {
00110     Audio::mute();
00111 }