Hi Coders,
I found some problems in the CSL MMC module so I am gonna post it here & hope it can save somebody's hair & effort.
1. In function:
CSL_Status SD_sendRca(
CSL_MmcsdHandle hMmcsd,
CSL_MMCCardObj *pSdCardObj,
Uint16 *pRCardAddr )
Instruction:
*pRCardAddr = hMmcsd->mmcRegs->MMCRSP7;
This instruction reset the IER0 (Interrupt Enable). After you calling this function (to initialize MMC/SD), none of the maskable interrupts can be served as a result.
I am not sure how to fix it. I try to change it to:
pRCardAddr = (Uint16*)hMmcsd->mmcRegs->MMCRSP7;
and it works.
2. In function:
CSL_Status MMC_init (void)
Instruction:
/* Enable Serial port 0 pin for mmcsd0 */
CSL_FINST(CSL_SYSCTRL_REGS->EBSR, SYS_EBSR_SP0MODE, MODE0);
/* Enable Serial port 1 pin for mmcsd1 */
CSL_FINST(CSL_SYSCTRL_REGS->EBSR, SYS_EBSR_SP1MODE, MODE0);
It configures DSP pins for both MMC0 & MMC1. If you just need MMC0 & dedicated MMC1's pins for other purpose, you'll get into trouble.
To fix the problem, just comment the second line out if you don't need MMC1.
Please correct me if I am wrong. Thanks,
HTH
Joe
