📄 audiodrv.c
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RecStatus.handle = *phwi;
RecStatus.wFormatTag = pwfx->wFormatTag;
RecStatus.nChannels = pwfx->nChannels;
RecStatus.wBitsPerSample = pwfx->wBitsPerSample;
RecStatus.FsIdx = i;
RecStatus.CallBack = ( CallBackProc ) dwCallback;
RecStatus.CallBackInst = dwCallbackInstance;
RecStatus.Status = DEVICE_REC;
save_MPLLCON = rMPLLCON; //save MPLLCON value
//rMPLLCON = CodecPara[RecStatus.FsIdx].MPLL;
SetSysFclk( CodecPara[RecStatus.FsIdx].MPLL );
rCLKCON |= 0x20000; //enable IIS clock
DbgChgUartDiv();
IIS_PortSetting();
if ( ( RecStatus.DevReq & 0xff ) == 0x12 )
{
pISR_DMA1 = ( U32 ) RecDMADone;
EnableIrq( BIT_DMA1 );
}
if ( ( RecStatus.DevReq & 0xff ) == 0x21 )
{
pISR_DMA2 = ( U32 ) RecDMADone;
EnableIrq( BIT_DMA2 );
}
RecTotBlks = 0;
Init1341( RECORD );
return MMSYSERR_NOERROR;
}
MMRESULT waveInClose( HWAVEOUT hwi )
{
if ( ( RecStatus.handle != hwi ) || ( RecStatus.Status != DEVICE_REC ) )
return MMSYSERR_INVALHANDLE;
rIISCON = 0x0; //IIS Interface stop
rIISFCON = 0x0; //For FIFO flush
rCLKCON &= ~0x20000; //disable IIS colock
//rMPLLCON = save_MPLLCON; //restore MPLLCON value
SetSysFclk( save_MPLLCON );
RecStatus.Status = DEVICE_FREE;
ReleaseDMA( RecStatus.DevReq );
if ( ( RecStatus.DevReq & 0xff ) == 0x12 )
DisableIrq( BIT_DMA1 );
if ( ( RecStatus.DevReq & 0xff ) == 0x21 )
DisableIrq( BIT_DMA2 );
return MMSYSERR_NOERROR;
}
MMRESULT waveInStart( HWAVEIN hwi )
{
if ( ( RecStatus.handle != hwi ) || ( RecStatus.Status != DEVICE_REC ) )
return MMSYSERR_INVALHANDLE;
if ( !RecTotBlks )
return MMSYSERR_NOMEM;
SetRecDma();
rIISPSR = CodecPara[RecStatus.FsIdx].PreScaler;
rIISCON = ( 0 << 5 ) + ( 1 << 4 ) + ( 1 << 3 ) + ( 0 << 2 ) + ( 1 << 1 ); //Tx DMA disable,Rx DMA enable,Tx idle,Rx not idle,prescaler enable,stop
rIISMOD = ( 0 << 8 ) +
( 1 << 6 ) +
( 0 << 5 ) +
( 1 << 4 ) +
( ( RecStatus.wBitsPerSample >> 4 ) << 3 ) +
( CodecPara[RecStatus.FsIdx].ofs << 2 ) +
( 1 << 0 );
//Master mode[8],Rx mode[7:6],Low for Left Channel[5],IIS format[4],16/8bit [3],256/384fs [2],IISCLK 32fs[1:0]
rIISFCON = ( 1 << 14 ) + ( 1 << 12 ); //Rx DMA,Rx FIFO --> start piling....
rIISCON |= 0x1; //start IIS
return MMSYSERR_NOERROR;
}
MMRESULT waveInStop( HWAVEIN hwi )
{
if ( ( RecStatus.handle != hwi ) || ( RecStatus.Status != DEVICE_REC ) )
return MMSYSERR_INVALHANDLE;
rIISCON = 0x0; //IIS Interface stop
rIISFCON = 0x0; //For FIFO flush
StopDMA( RecStatus.DevReq );
return MMSYSERR_NOERROR;
}
MMRESULT waveInPrepareHeader( HWAVEIN hwi , LPWAVEHDR pwh , UINT cbwh )
{
if ( ( RecStatus.handle != hwi ) || ( RecStatus.Status != DEVICE_REC ) )
return MMSYSERR_INVALHANDLE;
pwh->lpNext = 0;
pwh->dwBytesRecorded = 0;
pwh->dwUser = 0;
pwh->dwFlags = 0;
return MMSYSERR_NOERROR;
}
MMRESULT waveInUnprepareHeader( HWAVEIN hwi , LPWAVEHDR pwh , UINT cbwh )
{
if ( ( RecStatus.handle != hwi ) || ( RecStatus.Status != DEVICE_REC ) )
return MMSYSERR_INVALHANDLE;
return MMSYSERR_NOERROR;
}
MMRESULT waveInAddBuffer( HWAVEIN hwi , LPWAVEHDR pwh , UINT cbwh )
{
if ( ( RecStatus.handle != hwi ) || ( RecStatus.Status != DEVICE_REC ) )
return MMSYSERR_INVALHANDLE;
if ( !RecTotBlks )
{
lpRecFstBlk = pwh;
lpRecCurBlk = lpRecFstBlk;
}
else
{
lpRecLstBlk->lpNext = pwh;
}
lpRecLstBlk = pwh;
pwh->lpNext = 0;
RecTotBlks++;
return MMSYSERR_NOERROR;
}
MMRESULT waveInReset( HWAVEOUT hwi )
{
return MMSYSERR_NOERROR;
}
/************************* Control Function *********************/
static void IIS_PortSetting( void )
{
//----------------------------------------------------------
// PORT B GROUP
//Ports : GPB4 GPB3 GPB2
//Signal : L3CLOCK L3DATA L3MODE
//Setting: OUTPUT OUTPUT OUTPUT
// [9:8] [7:6} [5:4]
//Binary : 01 , 01 01
//----------------------------------------------------------
rGPBUP = rGPBUP & ~( 0x7 << 2 ) | ( 0x7 << 2 ); //The pull up function is disabled GPB[4:2] 1 1100
rGPBCON = rGPBCON & ~( 0x3f << 4 ) | ( 0x15 << 4 ); //GPB[4:2]=Output(L3CLOCK):Output(L3DATA):Output(L3MODE)
//----------------------------------------------------------
// PORT E GROUP
//Ports : GPE4 GPE3 GPE2 GPE1 GPE0
//Signal : I2SSDO I2SSDI CDCLK I2SSCLK I2SLRCK
//Binary : 10 , 10 10 , 10 10
//----------------------------------------------------------
rGPEUP = rGPEUP & ~( 0x1f ) | 0x1f; //The pull up function is disabled GPE[4:0] 1 1111
rGPECON = rGPECON & ~( 0x3ff ) | 0x2aa; //GPE[4:0]=I2SSDO:I2SSDI:CDCLK:I2SSCLK:I2SLRCK
}
//==========================================================
#define L3C (1<<4) //GPB4 = L3CLOCK
#define L3D (1<<3) //GPB3 = L3DATA
#define L3M (1<<2) //GPB2 = L3MODE
static void _WrL3Addr( U8 data )
{
S32 i, j;
rGPBDAT = rGPBDAT & ~( L3D | L3M | L3C ) | L3C; //L3D=L, L3M=L(in address mode), L3C=H
for ( j = 0; j < 4; j++ )
; //tsu(L3) > 190ns
//GPB[4:2]=L3C:L3D:L3M
for ( i = 0; i < 8; i++ ) //LSB first
{
if ( data & 0x1 ) //If data's LSB is 'H'
{
rGPBDAT &= ~L3C; //L3C=L
rGPBDAT |= L3D; //L3D=H
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
rGPBDAT |= L3C; //L3C=H
rGPBDAT |= L3D; //L3D=H
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
}
else //If data's LSB is 'L'
{
rGPBDAT &= ~L3C; //L3C=L
rGPBDAT &= ~L3D; //L3D=L
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
rGPBDAT |= L3C; //L3C=H
rGPBDAT &= ~L3D; //L3D=L
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
}
data >>= 1;
}
rGPBDAT = rGPBDAT & ~( L3D | L3M | L3C ) | ( L3C | L3M ); //L3M=H,L3C=H
}
//==========================================================
static void _WrL3Data( U8 data , int halt )
{
S32 i, j;
if ( halt )
{
rGPBDAT = rGPBDAT & ~( L3D | L3M | L3C ) | L3C; //L3C=H(while tstp, L3 interface halt condition)
for ( j = 0; j < 4; j++ )
; //tstp(L3) > 190ns
}
rGPBDAT = rGPBDAT & ~( L3D | L3M | L3C ) | ( L3C | L3M ); //L3M=H(in data transfer mode)
for ( j = 0; j < 4; j++ )
; //tsu(L3)D > 190ns
//GPB[4:2]=L3C:L3D:L3M
for ( i = 0; i < 8; i++ )
{
if ( data & 0x1 ) //if data's LSB is 'H'
{
rGPBDAT &= ~L3C; //L3C=L
rGPBDAT |= L3D; //L3D=H
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
rGPBDAT |= ( L3C | L3D ); //L3C=H,L3D=H
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
}
else //If data's LSB is 'L'
{
rGPBDAT &= ~L3C; //L3C=L
rGPBDAT &= ~L3D; //L3D=L
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
rGPBDAT |= L3C; //L3C=H
rGPBDAT &= ~L3D; //L3D=L
for ( j = 0; j < 4; j++ )
; //tcy(L3) > 500ns
}
data >>= 1; //For check next bit
}
rGPBDAT = rGPBDAT & ~( L3D | L3M | L3C ) | ( L3C | L3M ); //L3M=H,L3C=H
}
//==========================================================
static void Init1341( char mode )
{
U16 FsIdx;
//Port Initialize
//----------------------------------------------------------
// PORT B GROUP
//Ports : GPB4 GPB3 GPB2
//Signal : L3CLOCK L3DATA L3MODE
//Setting: OUTPUT OUTPUT OUTPUT
// [9:8] [7:6} [5:4]
//Binary : 01 , 01 01
//----------------------------------------------------------
rGPBDAT = rGPBDAT & ~( L3M | L3C | L3D ) | ( L3M | L3C ); //Start condition : L3M=H, L3C=H
rGPBUP = rGPBUP & ~( 0x7 << 2 ) | ( 0x7 << 2 ); //The pull up function is disabled GPB[4:2] 1 1100
rGPBCON = rGPBCON & ~( 0x3f << 4 ) | ( 0x15 << 4 ); //GPB[4:2]=Output(L3CLOCK):Output(L3DATA):Output(L3MODE)
//L3 Interface
_WrL3Addr( 0x14 + 2 ); //STATUS (000101xx+10)
_WrL3Data( 0x60 , 0 ); //0,1,10, 000,0 : Status 0,Reset,256fs,IIS-bus,no DC-filtering
_WrL3Addr( 0x14 + 2 ); //STATUS (000101xx+10)
FsIdx = mode ? RecStatus.FsIdx : PlayStatus.FsIdx;
if ( CodecPara[FsIdx].ofs )
_WrL3Data( 0x18 , 0 ); //0,0,01, 000,0 : Status 0,No reset,384fs,IIS-bus,no DC-filtering
else
_WrL3Data( 0x28 , 0 ); //0,0,10, 000,0 : Status 0,No reset,256fs,IIS-bus,no DC-filtering
_WrL3Addr( 0x14 + 2 ); //STATUS (000101xx+10)
_WrL3Data( 0xc1 , 0 ); //1,0,0,0, 0,0,01
//Status 1,Gain of DAC 6 dB,Gain of ADC 0dB,ADC non-inverting,DAC non-inverting
//,Single speed playback,ADC-Off DAC-On
//Record
if ( mode )
{
_WrL3Addr( 0x14 + 2 ); //STATUS (000101xx+10)
// _WrL3Data(0xa2,0); //1,0,1,0, 0,0,10
//Status 1,Gain of DAC 0 dB,Gain of ADC 6dB,ADC non-inverting,DAC non-inverting
//,Single speed playback,ADC-On DAC-Off
_WrL3Data( 0xe3 , 0 ); //1,1,1,0, 0,0,11
//Status 1,Gain of DAC 6 dB,Gain of ADC 6dB,ADC non-inverting,DAC non-inverting
//,Single speed playback,ADC-On DAC-On,DAC打开使录音时可从耳机听到声音
// _WrL3Addr(0x14 + 0); //DATA0 (000101xx+00)
// _WrL3Data(0x3f,0); //00,11 1111 : Volume control (6 bits)
// _WrL3Data(0x00,0); //00,00 0000 : Volume control (6 bits) 0dB
_WrL3Addr( 0x14 + 0 ); //DATA0 (000101xx+00)
_WrL3Data( 0x7b , 0 ); //01,11 10,11 : Data0, Bass Boost 18~24dB, Treble 6dB
// _WrL3Addr(0x14 + 0); //DATA0 (000101xx+00)
_WrL3Data( 0xc4 , 0 ); //1100 0,100 : Extended addr(3bits), 100
// _WrL3Data(0x90,0); //100,1 00,00 : DATA0, Enable AGC, 00, input amplifier gain channel 2 (2bits)
_WrL3Data( 0xf0 , 0 ); //111,1 00,00 : DATA0, Enable AGC, 00, input amplifier gain channel 2 (2bits)
// _WrL3Addr(0x14 + 0); //DATA0 (000101xx+00)
_WrL3Data( 0xc0 , 0 ); //1100 0,000 : Extended addr(3bits), 000
_WrL3Data( 0xe4 , 0 ); //111, 00000 : MA = 0dB
_WrL3Data( 0xc1 , 0 ); //1100 0,001 : Extended addr(3bits), 001
_WrL3Data( 0xe4 , 0 ); //111, 00000 : MB = 0dB
// _WrL3Addr(0x14 + 0); //DATA0 (000101xx+00)
_WrL3Data( 0xc2 , 0 ); //1100 0,010 : Extended addr(3bits), 010
// _WrL3Data(0x59,0); //010,1 10,01 : DATA0, MIC Amplifier Gain 27dB, input channel 1 select(input channel 2 off)
_WrL3Data( 0xf9 , 0 ); //111,1 10,11 : DATA0, MIC Amplifier Gain 27dB, input 1 X MA + input 2 X MB
}
}
//==========================================================
static void PlayPause( U8 mode )
{
if ( mode )
rIISCON &= ~1; //stop iis
else
rIISCON |= 1; //start iis
}
#define MAX_VOLUME 61
static void AdjVolume( U16 volume )
{
rGPBDAT = rGPBDAT & ~( L3M | L3C | L3D ) | ( L3M | L3C ); //Start condition : L3M=H, L3C=H
rGPBUP = rGPBUP & ~( 0x7 << 2 ) | ( 0x7 << 2 ); //The pull up function is disabled GPB[4:2] 1 1100
rGPBCON = rGPBCON & ~( 0x3f << 4 ) | ( 0x15 << 4 ); //GPB[4:2]=Output(L3CLOCK):Output(L3DATA):Output(L3MODE)
volume = ( volume * MAX_VOLUME ) / 0xffff;
_WrL3Addr( 0x14 + 0 ); //DATA0 (000101xx+00)
_WrL3Data( MAX_VOLUME - volume , 0 );
}
/*
static void Muting(void)
{
if(mute) //Mute
{
_WrL3Addr(0x14 + 0); //DATA0 (000101xx+00)
_WrL3Data(0xa4,0); //10,1,00,1,00 : after, no de-emp, mute, flat
mute = 0;
}
else //No mute
{
_WrL3Addr(0x14 + 0); //DATA0 (000101xx+00)
_WrL3Data(0xa0,0); //10,1,00,0,00 : after, no de-emp, no mute, flat
mute = 1;
}
}
*/
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