📄 audiodrv.c
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if(RecStatus.Status!=DEVICE_FREE)
return MMSYSERR_BADDEVICEID;
RecStatus.DevReq = RequestDMA(REC_DMA_ATTR, REC_DMA_MODE);
if(RecStatus.DevReq==REQUEST_DMA_FAIL)
return MMSYSERR_BADDEVICEID;
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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