sdi.c

友善之臂 mini2440开发板 测试代码

    rSDIDSTA=0xff;	//YH 040221

STRCMD12:    
    //--Stop cmd(CMD12)
    rSDICARG=0x0;	    //CMD12(stuff bit)
    rSDICCON=(0x1<<9)|(0x1<<8)|0x4c; //sht_resp, wait_resp, start, CMD12

    //-- Check end of CMD12
    if(!Chk_CMDend(12, 1)) 
	goto STRCMD12;
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
    rSDIFSTA=rSDIFSTA&0x200;	//Clear Rx FIFO Last data Ready, YH 040221


	Uart_Printf("rSDIFSTA1=0x%x\n", rSDIFSTA);	//YH 040221
  	rSDIFSTA=rSDIFSTA&0x200;	//Clear Rx FIFO Last data Ready, YH 040221
	Uart_Printf("rSDIFSTA2=0x%x\n", rSDIFSTA);	//YH 040221

    Uart_Printf("\n--End stream read test\n");
}


void Wt_Block(void)
{
    U32 mode;
    int status;

    wt_cnt=0;    
    Uart_Printf("Block write test[ Polling write ]\n");


	
	mode = 0 ;

	rSDIFSTA=rSDIFSTA|(1<<16);	//YH 040223 FIFO reset

    if(mode!=2)
	rSDIDCON=(2<<22)|(1<<20)|(1<<17)|(Wide<<16)|(1<<14)|(3<<12)|(block<<0);	//YH 040220


    rSDICARG=0x0;	    // CMD24/25(addr)

REWTCMD:
    switch(mode)
    {
	case POL:
	    if(block<2)	// SINGLE_WRITE
	    {
		rSDICCON=(0x1<<9)|(0x1<<8)|0x58;	//sht_resp, wait_resp, dat, start, CMD24
		if(!Chk_CMDend(24, 1))	//-- Check end of CMD24
		    goto REWTCMD;
	    }
	    else	// MULTI_WRITE
	    {
			rSDICCON=(0x1<<9)|(0x1<<8)|0x59;	//sht_resp, wait_resp, dat, start, CMD25
			if(!Chk_CMDend(25, 1))	//-- Check end of CMD25
			goto REWTCMD;		
	    }

	    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
	    
	    while(wt_cnt<128*block)
	    {
		status=rSDIFSTA;
		if((status&0x2000)==0x2000) 
		{
		    rSDIDAT=*Tx_buffer++;
		    wt_cnt++;
			//Uart_Printf("Block No.=%d, wt_cnt=%d\n",block,wt_cnt);
		}
	    }
	    break;
	
	case INT:
	    pISR_SDI=(unsigned)Wt_Int;
	    rINTMSK = ~(BIT_SDI);

	    rSDIIMSK=0x10;  // Tx FIFO half int.

	    if(block<2)	    // SINGLE_WRITE
	    {
		rSDICCON=(0x1<<9)|(0x1<<8)|0x58;    //sht_resp, wait_resp, dat, start, CMD24
		if(!Chk_CMDend(24, 1))	//-- Check end of CMD24
		    goto REWTCMD;
	    }
	    else	    // MULTI_WRITE
	    {
		rSDICCON=(0x1<<9)|(0x1<<8)|0x59;    //sht_resp, wait_resp, dat, start, CMD25
		if(!Chk_CMDend(25, 1))	//-- Check end of CMD25 
		    goto REWTCMD;
	    }

	    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)

	    while(!TR_end);
	    //while(wt_cnt<128);

	    rINTMSK |= (BIT_SDI);
	    TR_end=0;
	    rSDIIMSK=0;	// All mask
	    break;

	case DMA:
	    pISR_DMA0=(unsigned)DMA_end;
	    rINTMSK = ~(BIT_DMA0);
		rSDIDCON=rSDIDCON|(1<<24); //YH 040227, Burst4 Enable

	    rDISRC0=(int)(Tx_buffer);	// Tx_buffer
	    rDISRCC0=(0<<1)+(0<<0);	// AHB, inc
	    rDIDST0=(U32)(SDIDAT);	// SDIDAT
	    rDIDSTC0=(1<<1)+(1<<0);	// APB, fix
	    rDCON0=(1<<31)+(0<<30)+(1<<29)+(0<<28)+(0<<27)+(2<<24)+(1<<23)+(1<<22)+(2<<20)+128*block;
	    //handshake, sync PCLK, TC int, single tx, single service, SDI, H/W request, 
	    //auto-reload off, word, 128blk*num
	    rDMASKTRIG0=(0<<2)+(1<<1)+0;    //no-stop, DMA0 channel on, no-sw trigger
	    
		rSDIDCON=(2<<22)|(1<<20)|(1<<17)|(Wide<<16)|(1<<15)|(1<<14)|(3<<12)|(block<<0);	//YH 040220

		    // Word Tx, Tx after rsp, blk, 4bit bus, dma enable, Tx start, blk num
	    if(block<2)	    // SINGLE_WRITE
	    {
		rSDICCON=(0x1<<9)|(0x1<<8)|0x58;    //sht_resp, wait_resp, dat, start, CMD24
		if(!Chk_CMDend(24, 1))	//-- Check end of CMD24
		    goto REWTCMD;	    
	    }
	    else	    // MULTI_WRITE
	    {
		rSDICCON=(0x1<<9)|(0x1<<8)|0x59;    //sht_resp, wait_resp, dat, start, CMD25
		if(!Chk_CMDend(25, 1))	//-- Check end of CMD25 
		    goto REWTCMD;	    
	    }

	    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)

	    while(!TR_end);		

	    rINTMSK |= (BIT_DMA0);
	    TR_end=0;
	    rDMASKTRIG0=(1<<2);	//DMA0 stop

	    break;

	default:
	    break;
    }
    
    //-- Check end of DATA
    if(!Chk_DATend()) 
	Uart_Printf("dat error\n");

	rSDIDCON=rSDIDCON&~(7<<12);		//YH 040220, Clear Data Transfer mode => no operation, Cleata Data Transfer start
    rSDIDSTA=0x10;	// Clear data Tx/Rx end

    if(block>1)
    {
	//--Stop cmd(CMD12)
REWCMD12:    
	rSDIDCON=(1<<18)|(1<<17)|(0<<16)|(1<<14)|(1<<12)|(block<<0); 	//YH  040220

	
	rSDICARG=0x0;	    //CMD12(stuff bit)
	rSDICCON=(0x1<<9)|(0x1<<8)|0x4c;    //sht_resp, wait_resp, start, CMD12

	//-- Check end of CMD12
	if(!Chk_CMDend(12, 1)) 
	    goto REWCMD12;
	rSDICSTA=0xa00;	// Clear cmd_end(with rsp)

	//-- Check end of DATA(with busy state)
	if(!Chk_BUSYend()) 
	    Uart_Printf("error\n");
	rSDIDSTA=0x08;	//! Should be cleared by writing '1'.
    }
}

void Wt_Stream(void)	// only for MMC, 3blk write
{
    int status, wt_cnt=0;

    if(MMC!=1)
    {
	Uart_Printf("Stream write command supports only MMC!\n");
	return;
    }
    Uart_Printf("\n[Stream write test]\n");
RECMD20:
    rSDIDCON=(2<<22)|(1<<20)|(0<<17)|(0<<16)|(1<<14)|(3<<12);  // stream mode


    rSDICARG=0x0;	// CMD20(addr)
    rSDICCON=(0x1<<9)|(0x1<<8)|0x54;    //sht_resp, wait_resp, dat, start, CMD20

    //-- Check end of CMD25
    if(!Chk_CMDend(20, 1)) 
	goto RECMD20;
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)

    while(wt_cnt<128*block)
    {
	status=rSDIFSTA;
	if((status&0x2000)==0x2000) 
	    rSDIDAT=Tx_buffer[wt_cnt++];
    }

    //-- Check end of DATA
    while( rSDIFSTA&0x400 );
    Delay(10);    // for the empty of DATA line(Hardware)
    rSDIDCON=(1<<20)|(0<<17)|(0<<16);	//YH 040220
    rSDIDCON=rSDIDCON&~(7<<12);		//YH 040220, no operation, data ready

    while( (rSDIDSTA&0x3)!=0x0 );
    if(rSDIDSTA!=0x0) 
	Uart_Printf("rSDIDSTA=0x%x\n", rSDIDSTA);

    rSDIDSTA=0xff;	//Clear rSDIDSTA

STWCMD12:    
    //--Stop cmd(CMD12)
    rSDIDCON=(1<<18)|(1<<17)|(0<<16)|(1<<14)|(1<<12);


    rSDICARG=0x0;	    //CMD12(stuff bit)
    rSDICCON=(0x1<<9)|(0x1<<8)|0x4c;   //sht_resp, wait_resp, start, CMD12

    //-- Check end of CMD12
    if(!Chk_CMDend(12, 1)) 
	goto STWCMD12;
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)

    //-- Check end of DATA(with busy state)
    if(!Chk_BUSYend()) 
	Uart_Printf("error\n");
    rSDIDSTA=0x08;

    Uart_Printf("\n--End Stream write test\n");
}


int Chk_CMDend(int cmd, int be_resp)
//0: Timeout
{
    int finish0;

    if(!be_resp)    // No response
    {
    	finish0=rSDICSTA;
		while((finish0&0x800)!=0x800)	// Check cmd end
	    finish0=rSDICSTA;

	rSDICSTA=finish0;// Clear cmd end state

	return 1;
    }
    else	// With response
    {
    	finish0=rSDICSTA;
	while( !( ((finish0&0x200)==0x200) | ((finish0&0x400)==0x400) ))    // Check cmd/rsp end


		finish0=rSDICSTA;



	if(cmd==1 | cmd==41)	// CRC no check, CMD9 is a long Resp. command.

	{
	    if( (finish0&0xf00) != 0xa00 )  // Check error
	    {
		rSDICSTA=finish0;   // Clear error state

		if(((finish0&0x400)==0x400))
		    return 0;	// Timeout error
    	    }
	    rSDICSTA=finish0;	// Clear cmd & rsp end state
	}
	else	// CRC check
	{
	    if( (finish0&0x1f00) != 0xa00 )	// Check error
	    {
		Uart_Printf("CMD%d:rSDICSTA=0x%x, rSDIRSP0=0x%x\n",cmd, rSDICSTA, rSDIRSP0);
		rSDICSTA=finish0;   // Clear error state

		if(((finish0&0x400)==0x400))
		    return 0;	// Timeout error
    	    }
	    rSDICSTA=finish0;
	}
	return 1;
    }
}

int Chk_DATend(void)
{
    int finish;

    finish=rSDIDSTA;
    while( !( ((finish&0x10)==0x10) | ((finish&0x20)==0x20) ))	
	// Chek timeout or data end
	finish=rSDIDSTA;

    if( (finish&0xfc) != 0x10 )
    {
        Uart_Printf("DATA:finish=0x%x\n", finish);
        rSDIDSTA=0xec;  // Clear error state
        return 0;
    }
    return 1;
}

int Chk_BUSYend(void)
{
    int finish;

    finish=rSDIDSTA;
    while( !( ((finish&0x08)==0x08) | ((finish&0x20)==0x20) ))
	finish=rSDIDSTA;

    if( (finish&0xfc) != 0x08 )
    {
        Uart_Printf("DATA:finish=0x%x\n", finish);
        rSDIDSTA=0xf4;  //clear error state
        return 0;
    }
    return 1;
}

void CMD0(void)
{
    //-- Make card idle state 
    rSDICARG=0x0;	    // CMD0(stuff bit)
    rSDICCON=(1<<8)|0x40;   // No_resp, start, CMD0

    //-- Check end of CMD0
    Chk_CMDend(0, 0);
    rSDICSTA=0x800;	    // Clear cmd_end(no rsp)
}

int Chk_MMC_OCR(void)
{
    int i;


    //-- Negotiate operating condition for MMC, it makes card ready state
    for(i=0;i<100;i++)	//Negotiation time is dependent on CARD Vendors.
    {
//    	rSDICARG=0xffc000;	    	    //CMD1(MMC OCR:2.6V~3.6V)
		rSDICARG=0xff8000;	    	    //CMD1(SD OCR:2.7V~3.6V)
    	rSDICCON=(0x1<<9)|(0x1<<8)|0x41;    //sht_resp, wait_resp, start, CMD1

    	//-- Check end of CMD1
// 	if(Chk_CMDend(1, 1) & rSDIRSP0==0x80ffc000)	//[31]:Card Power up status bit (busy)
		//0xffc000 is Voltage window
	if(Chk_CMDend(1, 1) && (rSDIRSP0>>16)==0x80ff) //YH 0903 [31]:Card Power up status bit (busy)
//	if(Chk_CMDend(1, 1) & rSDIRSP0==0x80ff8000) 
	{
	    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
	    return 1;	// Success
	}
    }
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
    return 0;		// Fail
}

int Chk_SD_OCR(void)
{
    int i;

    //-- Negotiate operating condition for SD, it makes card ready state
    for(i=0;i<50;i++)	//If this time is short, init. can be fail.
    {
    	CMD55();    // Make ACMD

    	rSDICARG=0xff8000;	//ACMD41(SD OCR:2.7V~3.6V)
//    	rSDICARG=0xffc000;	//ACMD41(MMC OCR:2.6V~3.6V)
    	rSDICCON=(0x1<<9)|(0x1<<8)|0x69;//sht_resp, wait_resp, start, ACMD41

	//-- Check end of ACMD41
    	if( Chk_CMDend(41, 1) & rSDIRSP0==0x80ff8000 ) 
	{
	    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)

	    return 1;	// Success	    
	}
	Delay(200); // Wait Card power up status
    }
    //Uart_Printf("SDIRSP0=0x%x\n",rSDIRSP0);
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
    return 0;		// Fail
}

int CMD55(void)
{
    //--Make ACMD
    rSDICARG=RCA<<16;			//CMD7(RCA,stuff bit)
    rSDICCON=(0x1<<9)|(0x1<<8)|0x77;	//sht_resp, wait_resp, start, CMD55

    //-- Check end of CMD55
    if(!Chk_CMDend(55, 1)) 
	return 0;

    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
    return 1;
}

int CMD13(void)//SEND_STATUS
{
    int response0;

    rSDICARG=RCA<<16;			// CMD13(RCA,stuff bit)
    rSDICCON=(0x1<<9)|(0x1<<8)|0x4d;	// sht_resp, wait_resp, start, CMD13

    //-- Check end of CMD13
    if(!Chk_CMDend(13, 1)) 
	return 0;
    //Uart_Printf("rSDIRSP0=0x%x\n", rSDIRSP0);
    if(rSDIRSP0&0x100)
	//Uart_Printf("Ready for Data\n");
//    else 
	//Uart_Printf("Not Ready\n");
    response0=rSDIRSP0;
    response0 &= 0x3c00;
    response0 = response0 >> 9;
    //Uart_Printf("Current Status=%d\n", response0);
    if(response0==6)
	Test_SDI();

    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
    return 1;
}

int CMD9(void)//SEND_CSD
{
    rSDICARG=RCA<<16;				// CMD9(RCA,stuff bit)
    rSDICCON=(0x1<<10)|(0x1<<9)|(0x1<<8)|0x49;	// long_resp, wait_resp, start, CMD9

    Uart_Printf("\nCSD register :\n");
    //-- Check end of CMD9
    if(!Chk_CMDend(9, 1)) 
	return 0;

    Uart_Printf("SDIRSP0=0x%x\nSDIRSP1=0x%x\nSDIRSP2=0x%x\nSDIRSP3=0x%x\n", rSDIRSP0,rSDIRSP1,rSDIRSP2,rSDIRSP3);
    return 1;
}

void Set_1bit_bus(void)
{
    Wide=0;
    if(!MMC)
	SetBus();
    //Uart_Printf("\n****1bit bus****\n");
}

void Set_4bit_bus(void)
{
    Wide=1;
    SetBus();
    //Uart_Printf("\n****4bit bus****\n");
}

void SetBus(void)
{
SET_BUS:
    CMD55();	// Make ACMD
    //-- CMD6 implement
    rSDICARG=Wide<<1;	    //Wide 0: 1bit, 1: 4bit
    rSDICCON=(0x1<<9)|(0x1<<8)|0x46;	//sht_resp, wait_resp, start, CMD55

    if(!Chk_CMDend(6, 1))   // ACMD6
	goto SET_BUS;
    rSDICSTA=0xa00;	    // Clear cmd_end(with rsp)
}

void Set_Prt(void)
{
    //-- Set protection addr.0 ~ 262144(32*16*512) 
    Uart_Printf("[Set protection(addr.0 ~ 262144) test]\n");

RECMD28:
    //--Make ACMD
    rSDICARG=0;	    // CMD28(addr) 
    rSDICCON=(0x1<<9)|(0x1<<8)|0x5c;	//sht_resp, wait_resp, start, CMD28

    //-- Check end of CMD28
    if(!Chk_CMDend(28, 1)) 
	goto RECMD28;
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
}

void Clr_Prt(void)
{
    //-- Clear protection addr.0 ~ 262144(32*16*512) 
    //Uart_Printf("[Clear protection(addr.0 ~ 262144) test]\n");

RECMD29:
    //--Make ACMD
    rSDICARG=0;	    // CMD29(addr)
    rSDICCON=(0x1<<9)|(0x1<<8)|0x5d;	//sht_resp, wait_resp, start, CMD29

    //-- Check end of CMD29
    if(!Chk_CMDend(29, 1)) 
	goto RECMD29;
    rSDICSTA=0xa00;	// Clear cmd_end(with rsp)
}