iis.rar_44b0 iis_iis_iis 44b0

#include "44b.h" #include "44blib.h" #include "def.h" #include "iis.h" void _WrL3Addr(U8 data); void _WrL3Data(U8 data,int halt); void __irq BDMA0_PLAY(void); void __irq BDMA0_Done(void); void Init1341(char); #define L3D (0x200) #define L3M (0x10) #define L3C (0x20) #define TESTSIZE 700000//1000//100 //for test //static short int Buf[TESTSIZE]; //for down unsigned char *Buf,*_temp; unsigned char *rec_buf; #define PLAY 0 #define RECORD 1 #define REC_LEN 0xF0000 volatile unsigned int size=0; volatile unsigned int leng,ssize; volatile char Rec_Done=0; volatile char mute=1; void Test_Iis(void) { U32 i; ChangePllValue(0x49,0x7,0x1); //MCLK=45.1584MHz <-- 5.6448MHz*8 Uart_Init(45000000,115200); Uart_Printf("S3C44B0 IIS Test\n"); rPCONE=(rPCONE&0xffff)+(2<<16); //PE:CODECLK pISR_BDMA0=(unsigned)BDMA0_Done; //for down rINTMSK&=~(BIT_GLOBAL|BIT_BDMA0); Buf=(unsigned char *)0xc400000; _temp=(unsigned char *)0x14b000; for(i=0XC400000;i<(0XC400000+0XF0000);i+=4) { *((volatile unsigned *)i)=0x0; } //Uart_Printf("Download the PCM(no ADPCM) wave file by wkcom2(with header)!!\n"); while ((unsigned int)Buf<(0XC400000+0XF0000)) { (*Buf)=(*_temp); Buf++; _temp++; } Buf=(unsigned char *)0xc400000; size=*(Buf) | *(Buf+1)<<8 | *(Buf+2)<<16 | *(Buf+3)<<24; leng=0xf0000; // size=*(Buf+0x2c) | *(Buf+0x2d)<<8 | *(Buf+0x2e)<<16 | *(Buf+0x2f)<<24; size=(size>>1)<<1; //Uart_Printf("sample size=0x%x\n",size/2); Uart_Printf("\nNow play the wave file\n"); Init1341(PLAY); /****** BDMA0 Initialize ******/ //for down rBDISRC0=(1<<30)+(1<<28)+(int)(Buf+0x30); //Half word,inc,Buf rBDIDES0=(1<<30)+(3<<28)+((int)rIISFIF); //M2IO,fix,IISFIF rBDICNT0=(1<<30)+(1<<26)+(3<<22)+(1<<21)+(1<<20)+size; rBDCON0 = 0x0<<2; /****** IIS Initialize ******/ rIISCON=0x22; //Tx DMA enable,Rx idle,prescaler enable rIISMOD=0x89; //Master,Tx,L-ch=low,iis,16bit ch.,codeclk=256fs,lrck=32fs rIISPSR=0x33; //Prescaler_A/B enable, value=3 rIISFCON=0xa00; //Tx/Rx DMA,Tx/Rx FIFO --> start piling.... Uart_Printf("Push any key to exit!!!\n"); /****** IIS Tx Start ******/ rIISCON |=0x1; Uart_Getch(); /****** IIS Tx Stop ******/ rIISCON=0x0; //IIS stop rBDICNT0=0x0; //BDMA stop //for down free(Buf); Cache_Flush(); rNCACHBE0=0x0; size=0; rINTMSK|=BIT_BDMA0; ChangePllValue(PLL_M,PLL_P,PLL_S); //MCLK=40MHz Uart_Init(0,115200); } void Init1341(char mode) { /****** Port Initialize ******/ rPCONA = 0x1ff; //PA9(out):L3D rPCONB = 0x7CF; //PB4:L3M, PB5:L3C rPDATB = L3M|L3C; //L3M=H(start condition) //L3C=H(start condition) /****** L3 Interface ******/ _WrL3Addr(0x14+2); //status (000101xx+10) #ifdef FS441KHZ _WrL3Data(0x60,0); //0,1,10,000,0 reset,256fs,no DCfilter,iis #else _WrL3Data(0x40,0); //0,1,00,000,0 reset,512fs,no DCfilter,iis #endif _WrL3Addr(0x14+2); //status (000101xx+10) #ifdef FS441KHZ _WrL3Data(0x20,0); //0,0,10,000,0 no reset,256fs,no DCfilter,iis #else _WrL3Data(0x00,0); //0,0,00,000,0 no reset,512fs,no DCfilter,iis #endif _WrL3Addr(0x14+2); //status (000101xx+10) _WrL3Data(0x81,0); // //1,0,0,0,0,0,11 OGS=0,IGS=0,ADC_NI,DAC_NI,sngl speed,AonDon _WrL3Addr(0x14+0); //DATA0 (000101xx+00) _WrL3Data(0x00,0); //record if(mode) { _WrL3Addr(0x14+2); //STATUS (000101xx+10) _WrL3Data(0xa2,0); ////1,0,1,0,0,0,10 : OGS=0,IGS=1,ADC_NI,DAC_NI,sngl speed,AonDoff _WrL3Addr(0x14+0); //DATA0 (000101xx+00) _WrL3Data(0xc2,0); //11000,010 : DATA0, Extended addr(010) _WrL3Data(0x45,0); //010,001,01 : DATA0, MS=0dB, Ch1=on Ch2=off, } //record } void _WrL3Addr(U8 data) { S32 i,j; rPDATB &= (~L3M); //L3M=L rPDATB |= L3C; //L3C=H for(j=0;j<4;j++); //tsu(L3) > 190ns //PA9:L3D PB4:L3M PB5:L3C for(i=0;i<8;i++) { if(data&0x1)//if data bit is 'H' { rPDATB &= (~L3C); //L3C=L rPDATA |= L3D; //L3D=H for(j=0;j<4;j++); //tcy(L3) > 500ns rPDATB |= L3C; //L3C=H rPDATA |= L3D; //L3D=H for(j=0;j<4;j++); //tcy(L3) > 500ns } else //if data bit is 'L' { rPDATB&=(~L3C); //L3C=L rPDATA&=(~L3D); //L3D=L for(j=0;j<4;j++); //tcy(L3) > 500ns rPDATB|=L3C; //L3C=H rPDATA&=(~L3D); //L3D=L for(j=0;j<4;j++); //tcy(L3) > 500ns } data >>=1; } rPDATB |=L3C|L3M; //L3M=H,L3C=H } void _WrL3Data(U8 data,int halt) { U32 vPdata = 0x0; //L3D=L U32 vPdatb = 0x0; //L3M/L3C=L S32 i,j; if(halt) { rPDATB|=L3C; //L3C=H(while tstp, L3 interface halt condition) for(j=0;j<4;j++); //tstp(L3) > 190ns } rPDATB|=L3C|L3M; //L3M=H(in data transfer mode) for(j=0;j<4;j++); //tsu(L3)D > 190ns //PA9:L3MODE PG6:L3DATA PG7:L3CLOCK for(i=0;i<8;i++) { if(data&0x1) //if data bit is 'H' { // rPDATB=L3M; //L3C=L rPDATB&=(~L3C); rPDATA|=L3D; //L3D=H for(j=0;j<4;j++); //tcy(L3) > 500ns rPDATB=L3C|L3M; //L3C=H,L3D=H rPDATA=L3D; for(j=0;j<4;j++); //tcy(L3) > 500ns } else //if data bit is 'L' { rPDATB&=(~L3C); //L3C=L rPDATA&=(~L3D); //L3D=L for(j=0;j<4;j++); //tcy(L3) > 500ns rPDATB|=L3C|L3M; //L3C=H rPDATA&=(~L3D); //L3D=L for(j=0;j<4;j++); //tcy(L3) > 500ns } data>>=1; } rPDATB|=L3C|L3M; //L3M=H,L3C=H } void __irq BDMA0_Done(void) { rI_ISPC=BIT_BDMA0; //clear pending bit WrUTXH0('&'); rIISCON|=0x1; }