kouzi osaki / MagneWave

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MagneWave.cpp@1:a82b9af36dbf, 2013-10-29 (annotated)

Committer:
doctorura
Date:
Tue Oct 29 15:58:06 2013 +0000
Revision:
1:a82b9af36dbf
Parent:
0:5a700113dd87
Child:
2:0fc5df933021
8bit version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
doctorura 0:5a700113dd87 1 #include "MagneWave.h"
doctorura 0:5a700113dd87 2
doctorura 0:5a700113dd87 3 MagneWave::MagneWave( SoftMCP4922 *dac )
doctorura 0:5a700113dd87 4 {
doctorura 0:5a700113dd87 5 m_wave_DAC = dac;
doctorura 0:5a700113dd87 6 m_wave_DAC->write_u16( 32768 );
doctorura 0:5a700113dd87 7 }
doctorura 0:5a700113dd87 8
doctorura 0:5a700113dd87 9 void MagneWave::play( FILE *wavefile )
doctorura 0:5a700113dd87 10 {
doctorura 0:5a700113dd87 11 #if 0
doctorura 0:5a700113dd87 12 // data size check
doctorura 0:5a700113dd87 13 unsiged long dataSize = 0;
doctorura 0:5a700113dd87 14 seek( wavefile, 40, SEEK_SET );
doctorura 0:5a700113dd87 15 dataSize = fgetc( wavefile );
doctorura 0:5a700113dd87 16 dataSize |= ( fgetc( wavefile ) << 8 );
doctorura 0:5a700113dd87 17 dataSize |= ( fgetc( wavefile ) << 16 );
doctorura 0:5a700113dd87 18 dataSize |= ( fgetc( wavefile ) << 24 );
doctorura 0:5a700113dd87 19 printf("data size = %ld\n", dataSize );
doctorura 0:5a700113dd87 20 #endif
doctorura 0:5a700113dd87 21
doctorura 0:5a700113dd87 22 // jump to wave data
doctorura 0:5a700113dd87 23 fseek( wavefile, 44, SEEK_SET );
doctorura 0:5a700113dd87 24
doctorura 0:5a700113dd87 25 while(1){
doctorura 1:a82b9af36dbf 26 //16bit
doctorura 1:a82b9af36dbf 27 /*
doctorura 0:5a700113dd87 28 int tmpL = 0;
doctorura 0:5a700113dd87 29 int tmpH = 0;
doctorura 0:5a700113dd87 30 unsigned short dacVal16 = 0;
doctorura 0:5a700113dd87 31 tmpL = fgetc( wavefile );
doctorura 0:5a700113dd87 32 if( tmpL == EOF ){
doctorura 0:5a700113dd87 33 break;
doctorura 0:5a700113dd87 34 }
doctorura 0:5a700113dd87 35 tmpH = fgetc( wavefile );
doctorura 0:5a700113dd87 36 if( tmpH == EOF ){
doctorura 0:5a700113dd87 37 break;
doctorura 0:5a700113dd87 38 }
doctorura 0:5a700113dd87 39 dacVal16 = tmpL;
doctorura 0:5a700113dd87 40 dacVal16 |= ( tmpH << 8 );
doctorura 0:5a700113dd87 41 m_wave_DAC->write_u16( dacVal16 );
doctorura 1:a82b9af36dbf 42 */
doctorura 1:a82b9af36dbf 43
doctorura 1:a82b9af36dbf 44 // 8bit
doctorura 1:a82b9af36dbf 45 int dacVal8 = fgetc( wavefile );
doctorura 1:a82b9af36dbf 46
doctorura 1:a82b9af36dbf 47 if( dacVal8 == EOF ){
doctorura 1:a82b9af36dbf 48 break;
doctorura 1:a82b9af36dbf 49 }
doctorura 1:a82b9af36dbf 50 m_wave_DAC->write_u8( ( unsigned short )dacVal8 );
doctorura 0:5a700113dd87 51
doctorura 0:5a700113dd87 52 // TODO: adjust cycle
doctorura 1:a82b9af36dbf 53 wait_us(100);
doctorura 0:5a700113dd87 54 }
doctorura 0:5a700113dd87 55 }