📄 ac97.org.c
字号:
getchar();
printf("Recording...\n");
ClearPending(BIT_PCM_AC97);
rSUBSRCPND=(BIT_SUB_AC97);
rINTMSK=~(BIT_PCM_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;
}
rAC_GLBCTRL &= ~(1<<10); //PCM In Transfer PIO Mode Off
rINTSUBMSK|=(BIT_SUB_AC97);
rINTMSK|=(BIT_PCM_AC97);
printf("\nEnd of Record!\n");
}
void AC97_MICin_DMA3(unsigned int MIC_Size)
{
Rec_AC97_BUF = (unsigned int *)(DOWN_BUF);
ClearPending(BIT_DMA_SBUS);
rSUBSRCPND=(BIT_SUB_DMA3);
//IRQ Initialize
pISR_DMA_SBUS = (unsigned)DMA3_Rec_Done;
rINTMSK=~(BIT_DMA_SBUS);
rINTSUBMSK=~(BIT_SUB_DMA3);
//DMA3 Initialize
rDISRC3 = ((unsigned int)0x4500001C); //MIC Input Data FIFO
rDISRCC3 = (1<<1) + (1<<0); //APB, Fix
rDIDST3 = (int)Rec_AC97_BUF; //Record AC97_BUF initializ
rDIDSTC3 = (0<<1) + (0<<0); //AHB, Increment
rDCON3 = (1<<31)+(0<<30)+(1<<29)+(0<<28)+(0<<27)+(1<<22)+(2<<20)+(MIC_Size/4);
rDMAREQSEL3 = (8<<1) + (1<<0);
printf("Are you ready to record voice via MIC on SMDK2460?\n");
printf("Press any key to start record.\n");
getchar();
printf("Recording...\n");
rDMASKTRIG3 = (0<<2) + (1<<1) + 0; //No-stop, DMA3 channel on, No-sw trigger
// Transfer data enable using AC-Link
rAC_GLBCTRL = 0x20C; // Transfer data enable using AC-Link
while(AC97_Rec_Done ==0)
{
printf(".");
Delay(3000);
//printf("STAT3: 0x%x CURR_TC: 0x%x, DCDST3: 0x%x\n", rDSTAT3&0x300000, rDSTAT3&0xfffff, rDCDST3);
}
AC97_Rec_Done = 0;
ClearPending(BIT_DMA_SBUS);
rSUBSRCPND=(BIT_SUB_DMA3);
rDMASKTRIG3 = (1<<2); //DMA3 stop
rINTMSK |= (BIT_DMA_SBUS);
rINTSUBMSK |=(BIT_SUB_DMA3);
//AC97 MIC In Channel Finish
rAC_GLBCTRL &= ~(1<<9); //MIC In Transfer Mode Off
printf("\nEnd of Record!\n");
}
void AC97_MICin_INT(unsigned int PCM_Size)
{
//Record AC97_BUF initialize
Rec_AC97_BUF = (unsigned int *)(DOWN_BUF);
Play_AC97_BUF = Rec_AC97_BUF;
End_AC97_BUF = (Rec_AC97_BUF + PCM_Size/4);
//IRQ Initialization
pISR_PCM_AC97= (unsigned)Irq_AC97_MICin;
printf("Are you ready to record voice via MIC on SMDK2460?\n");
printf("Press any key to start record.\n");
getchar();
printf("Recording...\n");
ClearPending(BIT_PCM_AC97);
rSUBSRCPND=(BIT_SUB_AC97);
rINTMSK=~(BIT_PCM_AC97);
rINTSUBMSK=~(BIT_SUB_AC97);
rAC_GLBCTRL = 0x1010C; //MIC In channel threshold INT enable, PIO Mode On
while(1)
{
if(PCM_In_INT_Exit == 1)
break;
}
rAC_GLBCTRL &= ~(1<<8); //MIC In Transfer PIO Mode Off
rINTSUBMSK|=(BIT_SUB_AC97);
rINTMSK|=(BIT_PCM_AC97);
printf("\nEnd of Record!\n");
}
void AC97_CodecExit_PCMOut(void)
{
//DACs off
printf("\n\n=>DACs off PR1\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
//Analog off
printf("\n=>Analog off PR2\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9)|(1<<10));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
//Digital I/F off
printf("\n=>Digital I/F off PR4\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9)|(1<<10)|(1<<12));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
}
void AC97_CodecExit_PCMIn(unsigned short DACs_off)
{
//ADCs off
printf("\n\n=>ADCs off PR0\n");
AC97_Codec_Cmd(0,0x26,(1<<8));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
if(DACs_off == 1)
{
//DACs off
printf("\n\n=>DACs off PR1\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
}
//Analog off
printf("\n=>Analog off PR2\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9)|(1<<10));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
//Digital I/F off
printf("\n=>Digital I/F off PR4\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9)|(1<<10)|(1<<12));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
}
void AC97_CodecExit_MICIn(unsigned short DACs_off)
{
//ADCs off
printf("\n\n=>ADCs off PR0\n");
AC97_Codec_Cmd(0,0x26,(1<<8));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
if(DACs_off == 1)
{
//DACs off
printf("\n\n=>DACs off PR1\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
}
//Analog off
printf("\n=>Analog off PR2\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9)|(1<<10));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
//Digital I/F off
printf("\n=>Digital I/F off PR4\n");
AC97_Codec_Cmd(0,0x26,(1<<8)|(1<<9)|(1<<10)|(1<<12));
AC97_Controller_State();
printf("AC97 Codec Powerdown Ctrl/Stat 0x26 Reg.: 0x%x\n", AC97_Codec_Cmd(1,0x26,0x0000));
}
unsigned short AC97_Select_SamplingRate(void)
{
int i;
printf("\nSelect ADC/DAC Rate\n");
printf("0:8kHz, 1:22.05kHz, 2:44.1kHz, 3:48kHz\n");
i = GetIntNum();
switch(i)
{
case 0:
return 8000;
break;
case 1:
return 22050;
break;
case 2:
return 44100;
break;
case 3:
return 48000;
break;
default:
return 48000;
break;
}
}
void AC97_Controller_State(void)
{
unsigned char state;
state=(unsigned char)(rAC_GLBSTAT);
switch(state)
{
case 0:
printf("AC97 Controller State: Idle\n");
break;
case 1:
printf("AC97 Controller State: Init\n");
break;
case 2:
printf("AC97 Controller State: Ready\n");
break;
case 3:
printf("AC97 Controller State: Active\n");
break;
case 4:
printf("AC97 Controller State: LP\n");
break;
case 5:
printf("AC97 Controller State: Warm\n");
break;
default:
break;
}
}
float delay_func(unsigned short num_delay)
{
int divider=0, count;
pISR_TIMER34_WDT=(unsigned int)IsrWatchdog;
ClearPending(BIT_TIMER34_WDT);
rSUBSRCPND=BIT_SUB_WDT;
rINTMSK&=~(BIT_TIMER34_WDT);
rINTSUBMSK&=~(BIT_SUB_WDT);
//Parameter setting of watchdog timer
rWTCON=((PCLK/1000000-1)<<8)|(0<<3)|(1<<2)|(0<<0); // 16us
rWTDAT=num_delay;
rWTCNT=num_delay;
// t_watchdog = 16 usec, interrupt enable, reset disable, watchdog enable
rWTCON=((PCLK/1000000-1)<<8)|(0<<3)|(1<<2)|(0<<0)|(1<<5);
while(!timer_exit);
timer_exit=0;
return ((float)num_delay*(16e-6));
}
/* ISRs */
void __irq AC97_Codec_Ready(void)
{
if ( (rAC_GLBSTAT& 0x400000))
{
Codec_Ready_Irq=1;
printf("Codec Ready!\n");
rAC_GLBCTRL &= ~(0x400000); // codec ready interrupt disable
}
rSUBSRCPND=(BIT_SUB_AC97);
ClearPending(BIT_PCM_AC97);
rINTSUBMSK &= ~(BIT_SUB_AC97);
rINTMSK &=~(BIT_PCM_AC97);
}
void __irq DMA1_Play_Done(void)
{
rINTMSK = ~(BIT_DMA_SBUS);
rINTSUBMSK=~(BIT_SUB_DMA2);
ClearPending(BIT_DMA_SBUS);
rSUBSRCPND=(BIT_SUB_DMA1);
printf("\n~~~");
rINTMSK |= (BIT_DMA_SBUS);
rINTSUBMSK |=(BIT_SUB_DMA2);
}
void __irq DMA2_Rec_Done(void)
{
ClearPending(BIT_DMA_SBUS);
rSUBSRCPND=(BIT_SUB_DMA2);
AC97_Rec_Done = 1;
}
void __irq DMA3_Rec_Done(void)
{
ClearPending(BIT_DMA_SBUS);
rSUBSRCPND=(BIT_SUB_DMA3);
AC97_Rec_Done = 1;
}
void __irq Irq_AC97_PCMout(void)
{
unsigned int i, AC97_Stat;
rINTMSK |=(BIT_PCM_AC97);
rINTSUBMSK|=(BIT_SUB_AC97);
AC97_Stat = rAC_GLBSTAT;
if (AC97_Stat & AC97_PCM_OUT_THRESHOLD)
{
for(i=0; i<PCM_OUT_TRIGGER; i++)
{
rAC_PCMDATA = *(Play_AC97_BUF++);
if(Play_AC97_BUF == End_AC97_BUF)
break;
}
}
if(Play_AC97_BUF == End_AC97_BUF)
{
rAC_GLBCTRL &= ~(0x40000); //PCM Out channel threshold INT disable
PCM_Out_INT_Exit =1;
}
rSUBSRCPND=(BIT_SUB_AC97);
ClearPending(BIT_PCM_AC97);
rINTSUBMSK &= ~(BIT_SUB_AC97);
rINTMSK &= ~(BIT_PCM_AC97);
}
void __irq Irq_AC97_PCMin(void)
{
unsigned int AC97_Stat, i;
rINTMSK |=(BIT_PCM_AC97);
rINTSUBMSK|=(BIT_SUB_AC97);
AC97_Stat = rAC_GLBSTAT;
if (AC97_Stat & AC97_PCM_IN_THRESHOLD)
{
for(i=0; i<PCM_IN_TRIGGER; i++)
{
*(Play_AC97_BUF++) = rAC_PCMDATA;
if(Play_AC97_BUF == End_AC97_BUF)
break;
}
}
if(Play_AC97_BUF == End_AC97_BUF)
{
rAC_GLBCTRL &= ~(1<<17); //PCM In channel threshold INT disable
PCM_In_INT_Exit =1;
}
rSUBSRCPND=(BIT_SUB_AC97);
ClearPending(BIT_PCM_AC97);
rINTSUBMSK &= ~(BIT_SUB_AC97);
rINTMSK &= ~(BIT_PCM_AC97);
}
void __irq Irq_AC97_MICin(void)
{
unsigned int AC97_Stat, i;
rINTMSK |=(BIT_PCM_AC97);
rINTSUBMSK|=(BIT_SUB_AC97);
AC97_Stat = rAC_GLBSTAT;
if (AC97_Stat & AC97_MIC_IN_THRESHOLD)
{
for(i=0; i<PCM_IN_TRIGGER; i++)
{
*(Play_AC97_BUF++) = rAC_MICDATA;
if(Play_AC97_BUF == End_AC97_BUF)
break;
}
}
if(Play_AC97_BUF == End_AC97_BUF)
{
rAC_GLBCTRL &= ~(1<<16); //PCM In channel threshold INT disable
PCM_In_INT_Exit =1;
}
rSUBSRCPND=(BIT_SUB_AC97);
ClearPending(BIT_PCM_AC97);
rINTSUBMSK &= ~(BIT_SUB_AC97);
rINTMSK &= ~(BIT_PCM_AC97);
}
void __irq RxInt(void)
{
rUINTSP0 = 0x1;
rSUBSRCPND = BIT_SUB_UART0;
rSUBSRCPND;
ClearPending(BIT_UART);
*AC97_temp ++= RdURXH0();
}
void __irq IsrWatchdog(void)
{
rWTCON=0;
rINTSUBMSK|=BIT_SUB_WDT;
rINTMSK|=BIT_TIMER34_WDT;
ClearPending(BIT_TIMER34_WDT);
rSUBSRCPND=BIT_SUB_WDT;
timer_exit=1;
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -