📄 sdi.c
字号:
/*****************************************
NAME: sdi
DESC: SDI Bus Test
WWW.YCTEK.COM
*****************************************/
#include <string.h>
#include "def.h"
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "sdi.h"
#define INICLK 300000
//#define NORCLK 25000000
#define SDCLK 24000000 //PCLK=49.392MHz
#define MMCCLK 15000000 //PCLK=49.392MHz
#define POL 0
#define INT 1
#define DMA 2
int CMD13(void); // Send card status
int CMD9(void);
// Global variables
unsigned int *Tx_buffer; //128[word]*16[blk]=8192[byte]
unsigned int *Rx_buffer; //128[word]*16[blk]=8192[byte]
volatile unsigned int rd_cnt;
volatile unsigned int wt_cnt;
volatile unsigned int block;
volatile unsigned int TR_end=0;
int Wide=1; // 0:1bit, 1:4bit
int MMC=0; // 0:SD , 1:MMC
int Maker_ID;
char Product_Name[7];
int Serial_Num;
volatile int RCA;
void Test_SDI(void)
{
U32 save_rGPEUP, save_rGPECON;
int k;
RCA=0;
MMC=0;
//block=3072; //3072Blocks=1.5MByte, ((2Block=1024Byte)*1024Block=1MByte)
block=13;
save_rGPEUP=rGPEUP;
save_rGPECON=rGPECON;
rGPEUP = 0xf83f; // SDCMD, SDDAT[3:0] => PU En.
rGPECON = 0xaaaaaaaa; //SDCMD, SDDAT[3:0]
// rGPECON = 0xaaa800aa; //SDCMD, SDDAT[3:0] => Input
Uart_Printf("\n[SDI test]\n");
if(!SD_card_init())
return;
if(MMC)
{
rSDICON |=(1<<5);
}
Card_sel_desel(0); // Card deselect
if(!CMD9())
Uart_Printf("Get CSD fail!!!\n");
rSDIDCON=0;//tark???
rSDICSTA=0xffff;
rGPEUP=save_rGPEUP;
rGPECON=save_rGPECON;
}
int SD_card_init(void)
{
//-- SD controller & card initialize
int i;
char key;
/* Important notice for MMC test condition */
/* Cmd & Data lines must be enabled by pull up resister */
rSDIPRE=PCLK/(INICLK)-1; // 400KHz
// Uart_Printf("Init. Frequency is %dHz\n",(PCLK/(rSDIPRE+1)));
// rSDICON=(1<<4)|(1<<1)|1; // Type B, FIFO reset, clk enable
rSDICON=(1<<4)|1; // Type B, clk enable
rSDIFSTA=rSDIFSTA|(1<<16); //YH 040223 FIFO reset
rSDIBSIZE=0x200; // 512byte(128word)
rSDIDTIMER=0x7fffff; // Set timeout count
for(i=0;i<0x1000;i++); // Wait 74SDCLK for MMC card
//Uart_Printf("rSDIRSP0=0x%x\n",rSDIRSP0);
CMD0();
// Uart_Printf("\nIn idle\n");
//-- Check MMC card OCR
if(Chk_MMC_OCR())
{
Uart_Printf("\nIn MMC ready\n");
MMC=1;
goto RECMD2;
}
// Uart_Printf("MMC check end!!\n");
//-- Check SD card OCR
if(Chk_SD_OCR())
Uart_Printf("\n SD Card ready\n");
else
{
Uart_Printf("\nInitialize fail\nNo Card assertion\n");
return 0;
}
RECMD2:
//-- Check attaced cards, it makes card identification state
rSDICARG=0x0; // CMD2(stuff bit)
rSDICCON=(0x1<<10)|(0x1<<9)|(0x1<<8)|0x42; //lng_resp, wait_resp, start, CMD2
//-- Check end of CMD2
if(!Chk_CMDend(2, 1))
goto RECMD2;
rSDICSTA=0xa00; // Clear cmd_end(with rsp)
// Uart_Printf("\nEnd id\n");
RECMD3:
//--Send RCA
rSDICARG=MMC<<16; // CMD3(MMC:Set RCA, SD:Ask RCA-->SBZ)
rSDICCON=(0x1<<9)|(0x1<<8)|0x43; // sht_resp, wait_resp, start, CMD3
//-- Check end of CMD3
if(!Chk_CMDend(3, 1))
goto RECMD3;
rSDICSTA=0xa00; // Clear cmd_end(with rsp)
//--Publish RCA
if(MMC) {
RCA=1;
rSDIPRE=(PCLK/MMCCLK)-1; // YH 0812, Normal clock=20MHz
Uart_Printf("MMC Frequency is %dHz\n",(PCLK/(rSDIPRE+1)));
}
else
{
RCA=( rSDIRSP0 & 0xffff0000 )>>16;
// Uart_Printf("RCA=0x%x\n",RCA);
rSDIPRE=PCLK/(SDCLK)-1; // Normal clock=25MHz
// Uart_Printf("SD Frequency is %dHz\n",(PCLK/(rSDIPRE+1)));
} //YH 0716
//--State(stand-by) check
if( rSDIRSP0 & 0x1e00!=0x600 ) // CURRENT_STATE check
goto RECMD3;
// Uart_Printf("\nIn stand-by\n");
// rSDIPRE=PCLK/(2*NORCLK)-1; // Normal clock=25MHz
Card_sel_desel(1); // Select
if(!MMC)
Set_4bit_bus();
else
Set_1bit_bus();
return 1;
}
void Card_sel_desel(char sel_desel)
{
//-- Card select or deselect
if(sel_desel)
{
RECMDS7:
rSDICARG=RCA<<16; // CMD7(RCA,stuff bit)
rSDICCON= (0x1<<9)|(0x1<<8)|0x47; // sht_resp, wait_resp, start, CMD7
//-- Check end of CMD7
if(!Chk_CMDend(7, 1))
goto RECMDS7;
rSDICSTA=0xa00; // Clear cmd_end(with rsp)
//--State(transfer) check
if( rSDIRSP0 & 0x1e00!=0x800 )
goto RECMDS7;
}
else
{
RECMDD7:
rSDICARG=0<<16; //CMD7(RCA,stuff bit)
rSDICCON=(0x1<<8)|0x47; //no_resp, start, CMD7
//-- Check end of CMD7
if(!Chk_CMDend(7, 0))
goto RECMDD7;
rSDICSTA=0x800; // Clear cmd_end(no rsp)
}
}
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,j=0;
//-- 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("\n****CSD register****\n");
//-- Check end of CMD9
if(!Chk_CMDend(9, 1))
return 0;
// Uart_Printf(" SDIRSP0=0x%x\n SDIRSP1=0x%x\n SDIRSP2=0x%x\n SDIRSP3=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)
}
⌨️ 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 + -