iis.c

这是三星公司的arm7 s3c44b0x芯片的所有外设中断程序

//44BTEST : iis.c
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\def.h"
#include "..\inc\iis.h"
void _WrL3Addr(U8 data);
void _WrL3Data(U8 data,int halt);
void __irq BDMA0_Done(void);
void __irq TR_Done(void);
void __irq RxInt(void);
#define L3D (0x200)
#define L3M (0x40)
#define L3C (0x80)
#define TESTSIZE 2000000//1000//100
//for test
//static short int Buf[TESTSIZE];
//for down
unsigned char *Buf,*_temp;
volatile unsigned int size=0;
void Test_Iis(void)
{
	unsigned int i,j,save_A,save_C,save_E,save_G,save_PC,save_PE,save_PG;
	ChangePllValue(0x69,0x17,0x0); //MCLK=45.1584MHz <-- 5.6448MHz*8
	Uart_Init(45200000,115200);
	Uart_Printf("[IIS test]\n");
	save_A=rPCONA;//L3DATA
	save_C=rPCONC;//IIS port
	save_E=rPCONE;//CODEC clk
	save_G=rPCONG;//L3CLK,L3MOD
	save_PC=rPUPC;
	save_PE=rPUPE;
	save_PG=rPUPG;
	#if (BUSWIDTH==32)
		Uart_Printf("IIS test should be configured 16bit data bus\n");
		return;
	#else //BUSWIDTH=16
		rPCONC |=0xff;
		rPUPC |= 0xf;
	#endif
	rPCONE=(rPCONE&0xffff)+(2<<16); //PE:CODECLK
	pISR_BDMA0=(unsigned)BDMA0_Done;
	rINTMSK=~(BIT_GLOBAL|BIT_BDMA0|BIT_URXD0);
	/****** Tx DATA Initialize *****/
	//for test
	/* rNCACHBE0= ((int)Buf>>12) + ( (((int)Buf>>12) +0x100)<<16 );
	Uart_Printf("rNCACHBE0=0x%x\n",rNCACHBE0);
	for(i=0;i<TESTSIZE/2 ;i+=2)
	{
	Buf[i]=i*30;
	Buf[i+1]=i*30;
	}
	for(i=TESTSIZE/2;i<TESTSIZE;i+=2)
	{
	Buf[i]=(TESTSIZE-i)*30;
	Buf[i+1]=(TESTSIZE-i)*30;
	}
	*/
	///////////////////////////////////////////////////////////////////////////////////
	//for down
	pISR_URXD0=(unsigned)RxInt;
	Buf=(unsigned char *)malloc(TESTSIZE);
	rNCACHBE0= ((int)Buf>>12) + ( (((int)Buf>>12) +0x200)<<16 );//non-cachable 2MB
	Uart_Printf("rNCACHBE0=0x%x\n",rNCACHBE0);
	_temp=Buf;
	Uart_Printf("Download the PCM(no ADPCM) wave file by wkcom2(with header)!!\n");
	while(((unsigned int)_temp-(unsigned int)Buf)<4)
	{
		Led_Display(0xf);
		Delay(1500);
		Led_Display(0x0);
		Delay(1500);
	}
	size=*(Buf) | *(Buf+1)<<8 | *(Buf+2)<<16 | *(Buf+3)<<24;
	Uart_Printf("\nNow, Downloading... [FILESIZE:%7d( 0)",size);
	while(((unsigned int)_temp-(unsigned int)Buf)<size)
		Uart_Printf("\b\b\b\b\b\b\b\b%7d)",(unsigned int)_temp-(unsigned int)Buf);
	Uart_Printf("\b\b\b\b\b\b\b\b%7d)\n",(unsigned int)_temp-(unsigned int)Buf);
	rINTMSK |=BIT_URXD0;
	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("\n[]Now play the wave file\n");
	///////////////////////////////////////////////////////////////////////////////////
	Init1341();
	// for(i=4;i<300;i++)
	// Uart_Printf("%02x,",*(Buf+i));
	/****** BDMA0 Initialize ******/
	//for down
	rBDISRC0=(1<<30)+(1<<28)+(int)(Buf+0x30); //Half word,inc,Buf
	// rBDISRC0=(1<<30)+(1<<28)+(int)(Buf+4); //Half word,inc,Buf
	//for test
	// rBDISRC0=(1<<30)+(1<<28)+(int)(Buf); //Half word,inc,Buf
	rBDIDES0=(1<<30)+(3<<28)+((int)rIISFIF); //M2IO,fix,IISFIF
	//for down
	rBDICNT0=(1<<30)+(1<<26)+(3<<22)+(1<<21)+(0<<20)+size;
	rBDICNT0 |= (1<<20);//enable
	//for test
	// rBDICNT0=(1<<30)+(1<<26)+(3<<22)+(1<<21)+(1<<20)+TESTSIZE*2;
	//iis,reserve,done_int,auto-reload/start,DMA enable,COUNT
	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=0x11; //Prescaler_A/B enable, value=1
	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;
	while(!Uart_GetKey());
	/****** IIS Tx Stop ******/
	rIISCON=0x0; //IIS stop
	rBDICNT0=0x0; //BDMA stop
	//for down
	free(Buf);
	Cache_Flush();
	rNCACHBE0=0x0;
	size=0;
	rPCONA=save_A;
	rPCONC=save_C;
	rPCONE=save_E;
	rPCONG=save_G;
	rPUPC=save_PC;
	rPUPE=save_PE;
	rPUPG=save_PG;
	rINTMSK=BIT_GLOBAL;
	ChangePllValue(0x34,0x3,0x1);//Fin=10MHz, Fout=60MHz
	Uart_Init(0,115200);
}
void Init1341(void)
{
	/****** Port Initialize ******/
	rPCONA = 0x1ff; //PA9(out):L3D
	rPCONG = 0x5000; //PG6:L3M, PG7:L3C
	rPUPG |= 0xc0; //disable(pull-up)
	rPDATG = 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(0x83,0);
	//1,0,0,0,0,0,11 OGS=0,IGS=0,ADC_NI,DAC_NI,sngl speed,AonDon
}
void _WrL3Addr(U8 data)
{
	U32 vPdata = 0x0; //L3D=L
	U32 vPdatg = 0x0; //L3M=L(in address mode)/L3C=L
	S32 i,j;
	rPDATG = vPdatg; //L3M=L
	rPDATG |= L3C; //L3C=H
	for(j=0;j<4;j++); //tsu(L3) > 190ns
	//PA9:L3D PG6:L3M PG7:L3C
	for(i=0;i<8;i++)
	{
		if(data&0x1)//if data bit is 'H'
		{
			rPDATG = vPdatg; //L3C=L
			rPDATA = L3D; //L3D=H
			for(j=0;j<4;j++); //tcy(L3) > 500ns
			rPDATG = L3C; //L3C=H
			rPDATA = L3D; //L3D=H
			for(j=0;j<4;j++); //tcy(L3) > 500ns
		}
		else //if data bit is 'L'
		{
			rPDATG=vPdatg; //L3C=L
			rPDATA=vPdata; //L3D=L
			for(j=0;j<4;j++); //tcy(L3) > 500ns
			rPDATG=L3C; //L3C=H
			rPDATA=vPdata; //L3D=L
			for(j=0;j<4;j++); //tcy(L3) > 500ns
		}
		data >>=1;
	}
	rPDATG=L3C|L3M; //L3M=H,L3C=H
}
void _WrL3Data(U8 data,int halt)
{
	U32 vPdata = 0x0; //L3D=L
	U32 vPdatg = 0x0; //L3M/L3C=L
	S32 i,j;
	if(halt)
	{
		rPDATG=L3C; //L3C=H(while tstp, L3 interface halt condition)
		for(j=0;j<4;j++); //tstp(L3) > 190ns
	}
	rPDATG=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'
		{
			rPDATG=L3M; //L3C=L
			rPDATA=L3D; //L3D=H
			for(j=0;j<4;j++); //tcy(L3) > 500ns
			rPDATG=L3C|L3M; //L3C=H,L3D=H
			rPDATA=L3D;
			for(j=0;j<4;j++); //tcy(L3) > 500ns
		}
		else //if data bit is 'L'
		{
			rPDATG=L3M; //L3C=L
			rPDATA=vPdatg; //L3D=L
			for(j=0;j<4;j++); //tcy(L3) > 500ns
			rPDATG=L3C|L3M; //L3C=H
			rPDATA=vPdatg; //L3D=L
			for(j=0;j<4;j++); //tcy(L3) > 500ns
		}
		data>>=1;
	}
	rPDATG=L3C|L3M; //L3M=H,L3C=H
}
void __irq BDMA0_Done(void)
{
	rI_ISPC=BIT_BDMA0; //clear pending bit
	WrUTXH0('.');
}
void __irq RxInt(void)
{
	rI_ISPC=BIT_URXD0 ; //clear pending bits
	*_temp++=RdURXH0();
}
volatile int Tx_Done;
volatile int Rx_Done;
void Iis_Tx(void)
{
	unsigned int i, save_conC, save_pupC;
	unsigned short *txdata;
	Tx_Done=0;
	Uart_TxEmpty(0);
	ChangePllValue(0x69,0x17,0x0); //10MHz --> MCLK=45.1584MHz <-- 5.6448MHz*8
	Uart_Init(45200000,115200);
	Uart_Printf("[IIS Slave Tx test]\n");
	save_conC=rPCONC;
	save_pupC=rPUPC;
	rPCONC |=0xff;//IIS port
	rPUPC |= 0xf;
	pISR_BDMA0=(unsigned)TR_Done;
	rINTMSK=~(BIT_GLOBAL|BIT_BDMA0);
	/****** Tx DATA initialize ******/
	txdata=(unsigned short *)malloc(0x10000);
	for(i=0;i<0x10000;i++)
		*(txdata+i)=i;
	rNCACHBE0= ((int)txdata>>12) + ( (((int)txdata>>12) +0x20)<<16 );//non-cachable 65KB*2
	/****** BDMA0 Initialize ******/
	rBDISRC0=(1<<30)+(1<<28)+(int)(txdata); //Half word,inc,Buf
	rBDIDES0=(1<<30)+(3<<28)+((int)rIISFIF); //M2IO,fix,IISFIF
	rBDICNT0=(1<<30)+(1<<26)+(3<<22)+(0<<21)+(0<<20)+0x10000*2;
	rBDICNT0 |= (1<<20);//enable
	//iis,reserved,end_int,1_tx,DMA enable,COUNT
	rBDCON0 = 0x0<<2;
	/****** IIS Initialize ******/
	rIISCON=0x22; //Tx DMA enable,Rx idle,prescaler enable
	rIISMOD=0x189; //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....
	/****** Tx start ******/
	rIISCON |=0x1;
	while(!Tx_Done);
	/****** Tx Stop(Slave) ******/
	Delay(10);
	rIISCON=0x0; //IIS stop
	rIISFCON=0x0; //for FIFO flush
	rBDICNT0=0x0; //BDMA stop
	Uart_Printf("\nTx End...\n");
	Uart_Printf("Last 256bytes in 65KB transferred data\n");
	for(i=0;i<0x100;i++)
		Uart_Printf("%04x,",*(txdata+0xff00+i));
	free(txdata);
	Cache_Flush();
	rNCACHBE0=0x0;
	rPCONC=save_conC;
	rPUPC=save_pupC;
	rINTMSK=BIT_GLOBAL;
	ChangePllValue(0x34,0x3,0x1);//Fin=10MHz, Fout=60MHz
	Uart_Init(0,115200);
}
void __irq TR_Done(void)
{
	rI_ISPC=BIT_BDMA0; //clear pending bit
	Rx_Done=1;
	Tx_Done=1;
	//WrUTXH0('.');
}
void Iis_Rx(void)
{
	unsigned int i, j, save_conC,save_pupC;
	unsigned short *rxdata;
	Rx_Done=0;
	Uart_TxEmpty(0);
	ChangePllValue(0x69,0x17,0x0); //10MHz --> MCLK=45.1584MHz <-- 5.6448MHz*8
	Uart_Init(45200000,115200);
	Uart_Printf("[IIS Master Rx test]\n");
	save_conC=rPCONC;
	save_pupC=rPUPC;
	rPCONC |=0xff;//IIS port
	rPUPC |= 0xf;
	pISR_BDMA0=(unsigned)TR_Done;
	rINTMSK=~(BIT_GLOBAL|BIT_BDMA0);
	/****** Rx Buf initialize ******/
	rxdata=(unsigned short *)malloc(0x10000);
	//Uart_Printf("Receive addr=0x%x\n",rxdata);
	for(i=0;i<0x10000;i++)
	*(rxdata+i)=0;
	rNCACHBE0= ((int)rxdata>>12) + ( (((int)rxdata>>12) +0x20)<<16 );//non-cachable 65KB*2
	/****** BDMA0 Initialize ******/
	rBDISRC0=(1<<30)+(3<<28)+((int)rIISFIF); //Half word,fix,IISFIF
	rBDIDES0=(2<<30)+(1<<28)+(int)(rxdata); //IO2M,increment,rxdata
	rBDICNT0=(1<<30)+(1<<26)+(3<<22)+(0<<21)+(0<<20)+0x10000*2;
	//iis,reserved,end_int,1_tx,DMA disable,COUNT
	rBDICNT0 |= (1<<20);//enable
	rBDCON0 = 0x0<<2;
	/****** IIS Initialize ******/
	rIISCON=0x12; //Rx DMA enable,Tx idle,prescaler enable
	rIISMOD=0x049; //Slave,Tx,L-ch=low,iis,16bit ch.,codeclk=256fs,lrck=32fs
	rIISPSR=0x33; //Prescaler_A/B enable, value=3
	rIISFCON=0x500; //Tx/Rx DMA,Tx/Rx FIFO --> start piling....
	/****** Rx start ******/
	rIISCON |=0x1;
	while(!Rx_Done);
	/****** Rx Stop(Master) ******/
	rIISCON=0x0; //IIS stop
	rIISFCON=0x0; //for FIFO flush
	rBDICNT0=0x0; //BDMA stop
	/****** Check Rx data ******/
	for(i=0;i<0x10000;i++)
	{
		j=*(rxdata+i);
		if(j!=i)
		{
			Uart_Printf("IIS Rx fail!(Rx=%04x, Tx=%04x)\n", j,i);
			break;
		}
	}
	if(j+1==i)
		Uart_Printf("\nIIS Rx O.K.!!!\n");
	Uart_Printf("Last 256bytes in 65KB received data\n");
	for(i=0;i<0x100;i++)
		Uart_Printf("%04x,",*(rxdata+0xff00+i));
	free(rxdata);
	Cache_Flush();
	rNCACHBE0=0x0;
	rPCONC=save_conC;
	rPUPC=save_pupC;
	rINTMSK=BIT_GLOBAL;
	ChangePllValue(0x34,0x3,0x1);//Fin=10MHz, Fout=60MHz
	Uart_Init(0,115200);
}