📄 wdt_ac97.c
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UartPrintf(SHL_PRT,"\nPress any key to exit.\n");
UartGetByte(SHL_PRT);
}
Codec_Ready =1;
AC97_Port_Return();
}
/* Functional Sub-Routines */
void AC97_Port_Init(void)
{
//Push AC97 GPIO port configuration
save_AC97_rGPEDAT=rGPEDAT;
save_AC97_rGPECON=rGPECON;
save_AC97_rGPEUP=rGPEUP;
//---------------------------------------------------------------------
// PORT E GROUP
//Ports : GPE4 GPE3 GPE2 GPE1 GPE0
//Signal : AC_SDATA_OUT AC_SDATA_IN AC_nRESET AC_BIT_CLK AC_SYNC
//Binary : 11, 11, 11, 11, 11
//---------------------------------------------------------------------
rGPECON = rGPECON & ~(0x3ff) | 0x3ff; //GPE[4:0]=AC_SDATA_OUT AC_SDATA_IN AC_nRESET AC_BIT_CLK AC_SYNC
rGPEUP = rGPEUP & ~(0x1f) | 0x1f; //The pull up function is disabled GPE[4:0] 1 1111
//For EINT0 Push Button
rGPFUP = ((rGPFUP & ~(1<<0)) | (1<<0)); //GPF0
rGPFCON = ((rGPFCON & ~(3<<0)) | (1<<1)); //GPF0=EINT0
rEXTINT0 = ((rEXTINT0 & ~(7<<0)) | (2<<0)); //EINT0=falling edge triggered
//gpg11 for lm4863en
rGPGCON &= ~(3<<22);
rGPGCON |= (1<<22); // output
rGPGUP &= ~(1<<11); // pullup disable
rGPGDAT |= (1<<11); // output high
}
void AC97_Port_Return(void)
{
//Pop AC97 GPIO port configuration
rGPECON=save_AC97_rGPECON;
rGPEDAT=save_AC97_rGPEDAT;
rGPEUP=save_AC97_rGPEUP;
}
void AC97_Init(void)
{
int i = 0;
U08 ch;
UartPrintf(SHL_PRT,"\nAC97 Initialization...\n");
// Cold Reset
rAC_GLBCTRL = 0x1; // controller and codec cold reset
Delay(1000); // delay for controller safety reset
rAC_GLBCTRL = 0x0; // controller and codec normal mode
Delay(1000);
rAC_GLBCTRL = 0x1;
Delay(1000);
rAC_GLBCTRL = 0x0;
Delay(1000);
//AC-link On
rAC_GLBCTRL = (1<<2);
Delay(1000);
AC97_Controller_State();
//Transfer data enable using AC-link
rAC_GLBCTRL |= (1<<3); // AC97 Data transfer active
Delay(1000);
AC97_Controller_State();
UartPrintf(SHL_PRT,"\nAC97-Link On...\n");
//Codec Ready Check using Codec Ready Interrupt
Codec_Ready_Irq =0;
pISR_WDT_AC97= (unsigned)AC97_Codec_Ready;
ClearPending(BIT_WDT_AC97);
rSUBSRCPND=(BIT_SUB_AC97);
rINTMSK=~(BIT_WDT_AC97);
rINTSUBMSK=~(BIT_SUB_AC97);
rAC_GLBCTRL |= 0x400000;
while(!Codec_Ready_Irq)
{
UartPrintf(SHL_PRT,".");
Delay(3000);
i++;
if(i==20)
break;
}
UartPrintf(SHL_PRT,"\n");
if(i==20)
{
UartPrintf(SHL_PRT,"\nAC97 codec is not ready.");
UartPrintf(SHL_PRT,"\nCheck on connection between 2440A and AC97 Codec.\n");
//UartPrintf(SHL_PRT,"\nRN1, RN3 and R280 instead of RN2, RN4 and R281 must be used for AC97 link on SMDK2440 Base Board (Rev 0.18).\n");
UartPrintf(SHL_PRT,"\nBye. ");
Codec_Ready = 0;
}
}
void AC97_CodecInit_PD(void)
{
UartPrintf(SHL_PRT,"\nAC97 Codec Soft Reset\n");
AC97_Codec_Cmd(0,0x00,0x683F); //Codec Soft Reset : 16bit In/Out (stac9766/67)
UartPrintf(SHL_PRT,"AC97 Codec 0x26 Reg.: 0x%x\n\n", AC97_Codec_Cmd(1,0x26,0x0000));
}
void AC97_CodecInit_PCMIn( U16 AC97_fs)
{
AC97_Codec_Cmd(0,0x00,0x683F); //codec soft reset
AC97_Codec_Cmd(0,0x2A,0x0001); //variable rate enable
UartPrintf(SHL_PRT,"VRA Enable(1)/Disable(0): 0x%x\n",(0x1&AC97_Codec_Cmd(1,0x2A,0x0001)));
if(AC97_fs==48000)
AC97_Codec_Cmd(0,0x32,0xbb80); //ADC Sampling frequency 48kHz
else if(AC97_fs==44100)
AC97_Codec_Cmd(0,0x32,0xac44); //ADC Sampling frequency 44.1kHz
else if(AC97_fs==22050)
AC97_Codec_Cmd(0,0x32,0x5622); //ADC Sampling frequency 22.05kHz
AC97_Codec_Cmd(0,0x26,(1<<9)); //all power on except DAC Block
UartPrintf(SHL_PRT,"\nAC97 Codec 0x26 Reg.: 0x%x\n\n", AC97_Codec_Cmd(1,0x26,0x0000));
AC97_Codec_Cmd(0,0x10,0x1010); //line in volume on
AC97_Codec_Cmd(0,0x6e,0x0000); //All Analog Mode, ADC Input select => left slot3, right slot4
AC97_Codec_Cmd(0,0x1a,0x0505); //record source select => Stereo Mix
AC97_Codec_Cmd(0,0x1c,0x0909); //record gain is initial
AC97_Codec_Cmd(0,0x78,0x0001); //ADC HPF Bypass
AC97_Codec_Cmd(0,0x20,0x0000); //General Reg.
Input_Volume = AC97_Codec_Cmd(1,0x10,0x0000); //Line In volume
}
void AC97_CodecInit_PCMOut( U16 AC97_fs)
{
AC97_Codec_Cmd(0,0x00,0x683F); //codec soft reset
AC97_Codec_Cmd(0,0x2A,0x0001); //variable rate enable
//UartPrintf(SHL_PRT,"\nVRA Enable(1)/Disable(0): 0x%x\n", (0x1&AC97_Codec_Cmd(1,0x2A,0x0001)));
if(AC97_fs==48000) //DAC Sampling frequency 48kHz
AC97_Codec_Cmd(0,0x2C,0xbb80);
else if(AC97_fs==44100) //DAC Sampling frequency 44.1kHz
AC97_Codec_Cmd(0,0x2C,0xac44);
else if(AC97_fs==22050) //DAC Sampling frequency 22.05kHz
AC97_Codec_Cmd(0,0x2C,0x5622);
AC97_Codec_Cmd(0,0x26, 0x00); // all power on except ADC blcok
// AC97_Codec_Cmd(0,0x26, (1<<8)); // all power on except ADC blcok
UartPrintf(SHL_PRT,"AC97 Codec 0x26 Reg.: 0x%x\n\n", AC97_Codec_Cmd(1,0x26,0x0000));
AC97_Codec_Cmd(0,0x18,0x6000); // PCM out volume on
//AC97_Codec_Cmd(0,0x5c,0x0080); // PCM out volume on
AC97_Codec_Cmd(0,0x5c,0x0000); // PCM out volume on
AC97_Codec_Cmd(0,0x20,0x2000); // general purpose
AC97_Codec_Cmd(0,0x22,0x0f); // general purpose
// AC97_Codec_Cmd(0,0x20,0x0000); // general purpose
AC97_Codec_Cmd(0,0x04,0x0000); // Aux out(HP out) volume on
Output_Volume = AC97_Codec_Cmd(1,0x04,0x00000); //HP out volume
}
void AC97_CodecInit_MICIn(U16 AC97_fs)
{
AC97_Codec_Cmd(0,0x00,0x683F); //codec soft reset
AC97_Codec_Cmd(0,0x2A,0x0001); //variable rate enable
UartPrintf(SHL_PRT,"VRA Enable(1)/Disable(0): 0x%x\n",(0x1&AC97_Codec_Cmd(1,0x2A,0x0001)));
if(AC97_fs==48000) //ADC Sampling frequency 48kHz
AC97_Codec_Cmd(0,0x32,0xbb80);
else if(AC97_fs==44100) //ADC Sampling frequency 44.1kHz
AC97_Codec_Cmd(0,0x32,0xac44);
else if(AC97_fs==22050) //ADC Sampling frequency 22.05kHz
AC97_Codec_Cmd(0,0x32,0x5622);
AC97_Codec_Cmd(0,0x26,(1<<9)); //all power on except DAC Block
UartPrintf(SHL_PRT,"\nAC97 Codec 0x26 Reg.: 0x%x\n\n", AC97_Codec_Cmd(1,0x26,0x0000));
AC97_Codec_Cmd(0,0x20,0x0000); //MIC1 Selected
AC97_Codec_Cmd(0,0x6e,0x0024); //ADC Input Slot => left slot6, right slot9, MIC GAIN VAL =1
AC97_Codec_Cmd(0,0x0e,0x0040); //BOOSTEN =1
AC97_Codec_Cmd(0,0x1a,0x0000); //Left, Right => MIC
AC97_Codec_Cmd(0,0x1c,0xff);
AC97_Codec_Cmd(0,0x78,0x0001); //ADC HPF Bypass
Input_Volume = AC97_Codec_Cmd(1,0x1c,0x0000); //Record Volume
}
U16 AC97_Codec_Cmd(U08 CMD_Read, U08 CMD_Offset, U16 CMD_Data)
{
U16 Codec_Stat;
if(CMD_Read == 0)
{
rAC_CODEC_CMD = (0<<23)|(CMD_Offset<<16)|(CMD_Data<<0);
Delay_After_CommandWrite(1); //30us delay.
rAC_CODEC_CMD |= (1<<23); //To receive SLOTREQ bits when VRA is '1'.
}
else if (CMD_Read ==1)
{
rAC_CODEC_CMD = (1<<23)|(CMD_Offset<<16)|(CMD_Data<<0);
Delay(1000);
Codec_Stat = (U16)(rAC_CODEC_STAT & 0xFFFF);
Delay(1000);
return Codec_Stat;
}
else
return 0;
}
void PCM_In_Volume( U08 Up_Down_Volume)
{
if( ( Up_Down_Volume == 'u') | (Up_Down_Volume == 'U') )
{
if (Input_Volume == 0x0000)
UartPrintf(SHL_PRT,"Limit Volume Range!\n");
else
{
Input_Volume -= 0x0101;
AC97_Codec_Cmd(0,0x10, Input_Volume); // PCM In Volume Up
UartPrintf(SHL_PRT,"PCM In Volume Level : 0x%x\n", Input_Volume);
}
}
if ( ( Up_Down_Volume == 'd') | (Up_Down_Volume == 'D') )
{
if (Input_Volume == 0x1F1F)
UartPrintf(SHL_PRT,"Limit Volume Range!\n");
else
{
Input_Volume += 0x0101;
AC97_Codec_Cmd(0,0x10, Input_Volume); // PCM In Volume Down
UartPrintf(SHL_PRT,"PCM In Volume Level : 0x%4x\n", Input_Volume);
}
}
}
void PCM_Out_Volume(U08 Up_Down_Volume)
{
if( ( Up_Down_Volume == 'u') | (Up_Down_Volume == 'U') )
{
if (Output_Volume < 0x0101)
{
Output_Volume = 0x0000;
UartPrintf(SHL_PRT,"\nLimit Volume Range!");
}
else
{
Output_Volume -= 0x0101;
AC97_Codec_Cmd(0,0x04, Output_Volume); // PCM out Volume Up
UartPrintf(SHL_PRT,"\nHeadphone Volume Level (In AC97 Codec 04h Reg.): 0x%x", Output_Volume);
}
}
if ( ( Up_Down_Volume == 'd') | (Up_Down_Volume == 'D') )
{
if (Output_Volume > 0x1F1F)
{
Output_Volume = 0x1F1F;
UartPrintf(SHL_PRT,"\nLimit Volume Range!");
}
else
{
Output_Volume += 0x0101;
AC97_Codec_Cmd(0,0x04, Output_Volume); // PCM out Volume Down
UartPrintf(SHL_PRT,"\nHeadphone Volume Level (In AC97 Codec 04h Reg.): 0x%x", Output_Volume);
}
}
}
void Download_PCM_File(void)
{
pISR_UART1 = (unsigned)RxInt;
rINTMSK = ~( BIT_UART1);
rINTSUBMSK = ~(BIT_SUB_RXD1);
AC97_BUF = (U08 *)DOWN_BUF;
AC97_temp = AC97_BUF;
UartPrintf(SHL_PRT,"\nDownload the PCM(no ADPCM) file via Serial Port Transmit in DNW (With header & CS)!\n");
UartPrintf(SHL_PRT,"Max of PCM Size: 4M bytes\n");
while(((unsigned int)AC97_temp - (unsigned int)AC97_BUF) < 4)
Delay(3000);
AC97_size = *(AC97_BUF) | *(AC97_BUF + 1)<<8 | *(AC97_BUF + 2)<<16 | *(AC97_BUF + 3)<<24;
UartPrintf(SHL_PRT,"\nNow, Downloading... [ File Size : %7d( 0)]",AC97_size);
while(((unsigned int)AC97_temp - (unsigned int)AC97_BUF) < AC97_size)
UartPrintf(SHL_PRT,"\b\b\b\b\b\b\b\b%7d)",(unsigned int)AC97_temp - (unsigned int)AC97_BUF);
UartPrintf(SHL_PRT,"\b\b\b\b\b\b\b\b%7d)]\n",(unsigned int)AC97_temp - (unsigned int)AC97_BUF);
rINTSUBMSK |= BIT_SUB_RXD1;
AC97_size = *(AC97_BUF + 0x2c) | *(AC97_BUF + 0x2d)<<8 | *(AC97_BUF + 0x2e)<<16 | *(AC97_BUF + 0x2f)<<24;
AC97_size = (AC97_size>>1)<<1;
AC97_fs = *(AC97_BUF + 0x1c) | *(AC97_BUF + 0x1d)<<8 | *(AC97_BUF + 0x1e)<<16 | *(AC97_BUF + 0x1f)<<24;
Play_AC97_BUF = (U32 *)(AC97_BUF + 0x30); //DNW Header + PCM File Header => OffSet: 0x30
UartPrintf(SHL_PRT,"Sample PCM Data Size = %d\n", AC97_size);
UartPrintf(SHL_PRT,"Sampling Frequency = %d Hz\n", AC97_fs);
}
void AC97_PCMout_DMA1(U32 PCM_Size)
{
pISR_EINT0= (unsigned)Muting;
pISR_DMA1= (unsigned)DMA1_Play_Done;
rINTMSK = ~(BIT_DMA1|BIT_EINT0);
Play_AC97_BUF=(U32 *)(DOWN_BUF +0x30);
//DMA Ch1 for PCMInitialize
rDISRC1 = (int)Play_AC97_BUF;
rDISRCC1 = (0<<1) + (0<<0); //The source is in the system bus(AHB), Increment
rDIDST1 = ((U32)0x5b000018); //PCM Out Data Fifo
rDIDSTC1 = (1<<1) + (1<<0); //The destination is in the peripheral bus(APB), Fixed
rDCON1 = (1<<31)+(0<<30)+(1<<29)+(0<<28)+(0<<27)+(5<<24)+(1<<23)+(0<<22)+(2<<20)+(PCM_Size/4);
rDMASKTRIG1 = (0<<2) + (1<<1) + (0<<0); //No-stop[2], DMA1 channel On[1], No-sw trigger[0]
//AC97 Initialize
UartPrintf(SHL_PRT,"\nConnect Head Phone Line In to CON21 (Head Phone Out) on SMDK2440 and Press Key.\n");
UartGetByte(SHL_PRT);
UartPrintf(SHL_PRT,"\nNow Play...\n");
UartPrintf(SHL_PRT,"To Volume Up, Press the 'u' key.\n");
UartPrintf(SHL_PRT,"To Volume Down, Press the 'd' key.\n");
UartPrintf(SHL_PRT,"To Mute On/Off, Press EINT0 Button.\n");
UartPrintf(SHL_PRT,"\nIf you want to exit, Press the 'x' key.\n");
UartPrintf(SHL_PRT,"Headphone Volume Register = 0x%x\n", Output_Volume);
//Transfer data enable using AC-Link
rAC_GLBCTRL = 0x200C;
//UartPrintf(SHL_PRT,"\nWrite Value to AC_GLBCTRL Reg. =>0x200C\n");
//UartPrintf(SHL_PRT,"Read Value from AC_GLBCTRL Reg. =>0x%x\n", rAC_GLBCTRL);
Delay(1000);
while(1)
{
//UartPrintf(SHL_PRT,"STAT3: 0x%x CURR_TC: 0x%x DCDST3: 0x%x\n", rDSTAT3&0x300000, rDSTAT3&0xfffff, rDCDST3);
Up_Down_Volume=UartGetByte(SHL_PRT);
if( (Up_Down_Volume == 'x') | (Up_Down_Volume == 'X'))
break;
PCM_Out_Volume(Up_Down_Volume);
}
ClearPending(BIT_DMA1);
rDMASKTRIG1 = (1<<2); //DMA1 stop
rINTMSK|= (BIT_DMA1 | BIT_EINT0);
//AC97 PCM In Channel Finish
rAC_GLBCTRL &= ~(1<<13); //PCM Out Transfer Mode Off
UartPrintf(SHL_PRT,"\nEnd of Play!\n");
}
void AC97_PCMout_INT(U32 PCM_Size)
{
//Record AC97_BUF initialize
Rec_AC97_BUF = (U32 *)(DOWN_BUF);
Play_AC97_BUF = (Rec_AC97_BUF + 0x30);
End_AC97_BUF = (Rec_AC97_BUF + 0x30 + PCM_Size/4);
//IRQ Initialization
pISR_WDT_AC97= (unsigned)Irq_AC97_PCMout;
UartPrintf(SHL_PRT,"\nConnect Head Phone Line In to CON21 on SMDK2440 and Press any key.\n");
UartGetByte(SHL_PRT);
UartPrintf(SHL_PRT,"\nNow Play...\n");
UartPrintf(SHL_PRT,"Headphone Volume Register = 0x%x\n", Output_Volume);
ClearPending(BIT_WDT_AC97);
rSUBSRCPND=(BIT_SUB_AC97);
rINTMSK=~(BIT_WDT_AC97);
rINTSUBMSK=~(BIT_SUB_AC97);
rAC_GLBCTRL = 0x4100C; //PCM Out channel threshold INT enable, PIO Mode On
while(1)
{
if(PCM_Out_INT_Exit == 1)
break;
}
rAC_GLBCTRL &= ~(1<<12); //PCM Out Transfer PIO Mode Off
rINTSUBMSK|=(BIT_SUB_WDT|BIT_SUB_AC97);
rINTMSK|=(BIT_WDT_AC97);
UartPrintf(SHL_PRT,"\nEnd of Play!\n");
}
void AC97_PCMin_DMA2(U32 PCM_Size)
{
Rec_AC97_BUF = (U32 *)(DOWN_BUF);
//IRQ Initialize
pISR_DMA2 = (unsigned)DMA2_Rec_Done;
rINTMSK = ~(BIT_DMA2);
//DMA2 Initialize
rDISRC2 = ((U32)0x5B000018); //PCM Input Data FIFO
rDISRCC2 = (1<<1) + (1<<0); //APB, Fix
rDIDST2 = (int)Rec_AC97_BUF; //Record AC97_BUF initializ
rDIDSTC2 = (0<<1) + (0<<0); //AHB, Increment
rDCON2 = (1<<31)+(0<<30)+(1<<29)+(0<<28)+(0<<27)+(5<<24)+(1<<23)+(1<<22)+(2<<20)+(PCM_Size/4);
UartPrintf(SHL_PRT,"Connect Sound Line Out to CON25(Line In) on SMDK2440\n");
UartPrintf(SHL_PRT,"Press any key to start record.\n");
UartGetByte(SHL_PRT);
UartPrintf(SHL_PRT,"Recording...\n");
rDMASKTRIG2 = (0<<2) + (1<<1) + 0; //No-stop, DMA2 channel on, No-sw trigger
// Transfer data enable using AC-Link
rAC_GLBCTRL = 0x80C; // Transfer data enable using AC-Link
//UartPrintf(SHL_PRT,"\nWrite Value to AC_GLBCTRL Reg. =>0x80C\n");
//UartPrintf(SHL_PRT,"Read Value from AC_GLBCTRL Reg. =>0x%x\n", rAC_GLBCTRL);
while(AC97_Rec_Done ==0)
{
UartPrintf(SHL_PRT,".");
Delay(3000);
//UartPrintf(SHL_PRT,"STAT2: 0x%x CURR_TC: 0x%x DCDST2: 0x%x\n", rDSTAT2&0x300000, rDSTAT2&0xfffff, rDCDST2);
}
AC97_Rec_Done = 0;
rDMASKTRIG2 = (1<<2); //DMA2 stop
rINTMSK |= BIT_DMA2;
//AC97 PCM In Channel Finish
rAC_GLBCTRL &= ~(1<<11); //PCM In Transfer Mode Off
Delay(1000);
UartPrintf(SHL_PRT,"\nEnd of Record!\n");
}
void AC97_PCMin_INT(U32 PCM_Size)
{
//Record AC97_BUF initialize
Rec_AC97_BUF = (U32 *)(DOWN_BUF);
Play_AC97_BUF = Rec_AC97_BUF + 0x30;
End_AC97_BUF = (Rec_AC97_BUF + 0x30 + PCM_Size/4);
//IRQ Initialization
pISR_WDT_AC97= (unsigned)Irq_AC97_PCMin;
UartPrintf(SHL_PRT,"Connect Sound Line Out to CON25(Line In) on SMDK2440\n");
UartPrintf(SHL_PRT,"Press any key to start record.\n");
UartGetByte(SHL_PRT);
UartPrintf(SHL_PRT,"Recording...\n");
ClearPending(BIT_WDT_AC97);
rSUBSRCPND=(BIT_SUB_AC97);
rINTMSK=~(BIT_WDT_AC97);
rINTSUBMSK=~(BIT_SUB_AC97);
rAC_GLBCTRL = 0x2040C; //PCM In channel threshold INT enable, PIO Mode On
while(1)
{
if(PCM_In_INT_Exit == 1)
break;
}
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