Hirokazu enya / MagneWave

Gugen展示版

Fork of MagneWave by kouzi osaki

MagneWave.cpp@2:0fc5df933021, 2013-10-31 (annotated)

Committer:
doctorura
Date:
Thu Oct 31 15:07:37 2013 +0000
Revision:
2:0fc5df933021
Parent:
1:a82b9af36dbf
Child:
3:500b992880b3
adjust cycle

Who changed what in which revision?

UserRevisionLine numberNew contents of line
doctorura 0:5a700113dd87 1 #include "MagneWave.h"
doctorura 0:5a700113dd87 2
doctorura 2:0fc5df933021 3 #define DATA_OFFSET 44
doctorura 2:0fc5df933021 4 #define DAC_CENTER 32768
doctorura 2:0fc5df933021 5
doctorura 0:5a700113dd87 6 MagneWave::MagneWave( SoftMCP4922 *dac )
doctorura 0:5a700113dd87 7 {
doctorura 0:5a700113dd87 8 m_wave_DAC = dac;
doctorura 2:0fc5df933021 9 m_wave_DAC->write_u16( DAC_CENTER );
doctorura 0:5a700113dd87 10 }
doctorura 0:5a700113dd87 11
doctorura 0:5a700113dd87 12 void MagneWave::play( FILE *wavefile )
doctorura 0:5a700113dd87 13 {
doctorura 0:5a700113dd87 14 #if 0
doctorura 0:5a700113dd87 15 // data size check
doctorura 0:5a700113dd87 16 unsiged long dataSize = 0;
doctorura 0:5a700113dd87 17 seek( wavefile, 40, SEEK_SET );
doctorura 0:5a700113dd87 18 dataSize = fgetc( wavefile );
doctorura 0:5a700113dd87 19 dataSize |= ( fgetc( wavefile ) << 8 );
doctorura 0:5a700113dd87 20 dataSize |= ( fgetc( wavefile ) << 16 );
doctorura 0:5a700113dd87 21 dataSize |= ( fgetc( wavefile ) << 24 );
doctorura 2:0fc5df933021 22 printf( "data size = %ld\n", dataSize );
doctorura 0:5a700113dd87 23 #endif
doctorura 0:5a700113dd87 24
doctorura 0:5a700113dd87 25 // jump to wave data
doctorura 2:0fc5df933021 26 fseek( wavefile, DATA_OFFSET, SEEK_SET );
doctorura 0:5a700113dd87 27
doctorura 0:5a700113dd87 28 while(1){
doctorura 1:a82b9af36dbf 29 //16bit
doctorura 1:a82b9af36dbf 30 /*
doctorura 0:5a700113dd87 31 int tmpL = 0;
doctorura 0:5a700113dd87 32 int tmpH = 0;
doctorura 0:5a700113dd87 33 unsigned short dacVal16 = 0;
doctorura 0:5a700113dd87 34 tmpL = fgetc( wavefile );
doctorura 0:5a700113dd87 35 if( tmpL == EOF ){
doctorura 0:5a700113dd87 36 break;
doctorura 0:5a700113dd87 37 }
doctorura 0:5a700113dd87 38 tmpH = fgetc( wavefile );
doctorura 0:5a700113dd87 39 if( tmpH == EOF ){
doctorura 0:5a700113dd87 40 break;
doctorura 0:5a700113dd87 41 }
doctorura 0:5a700113dd87 42 dacVal16 = tmpL;
doctorura 0:5a700113dd87 43 dacVal16 |= ( tmpH << 8 );
doctorura 0:5a700113dd87 44 m_wave_DAC->write_u16( dacVal16 );
doctorura 1:a82b9af36dbf 45 */
doctorura 1:a82b9af36dbf 46
doctorura 1:a82b9af36dbf 47 // 8bit
doctorura 1:a82b9af36dbf 48 int dacVal8 = fgetc( wavefile );
doctorura 1:a82b9af36dbf 49
doctorura 1:a82b9af36dbf 50 if( dacVal8 == EOF ){
doctorura 1:a82b9af36dbf 51 break;
doctorura 1:a82b9af36dbf 52 }
doctorura 1:a82b9af36dbf 53 m_wave_DAC->write_u8( ( unsigned short )dacVal8 );
doctorura 0:5a700113dd87 54
doctorura 0:5a700113dd87 55 // TODO: adjust cycle
doctorura 2:0fc5df933021 56 wait_us( 75 );
doctorura 0:5a700113dd87 57 }
doctorura 0:5a700113dd87 58 }