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
}
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 SetBus(void)
{
do
{
CMD55(); // Make ACMD
//-- CMD6 implement
SDICARG = Wide << 1; //Wide 0: 1bit, 1: 4bit
SDICCON = (0x1 << 9) | (0x1 << 8) | (MAGIC_NUMBER | 6); //sht_resp, wait_resp, start, CMD55
if (!Chk_CMDend(6, 1)) // ACMD6
continue;
SDICSTA = 0xa00; // Clear cmd_end(with rsp)
} while (0);
}
