Guys, I need to find away to know when a read/write to the sdmmc card is finished, however it would appear that the software framework driver is not fully implemented. Have a look below.
/**
* Read Blocks of data in a buffer pointed by pData. The buffer size must be at
* least 512 byte long. This function checks the SD card status register and
* address the card if required before sending the read command.
* \return 0 if successful; otherwise returns an \ref sdmmc_rc "error code".
* \param pSd Pointer to a SD card driver instance.
* \param address Address of the block to read.
* \param pData Data buffer whose size is at least the block size. It shall
* follow the peripheral and DMA alignment requirements.
* \param length Number of blocks to be read.
* \param pCallback Pointer to callback function that invoked when read done.
* 0 to start a blocked read.
* \param pArgs Pointer to callback function arguments.
*/
uint8_t
SD_Read(sSdCard * pSd,
uint32_t address,
void *pData, uint32_t length, fSdmmcCallback pCallback, void *pArgs)
{
uint8_t *out = NULL;
uint32_t remaining, blk_no;
uint16_t limited;
uint8_t error = SDMMC_OK;
assert(pSd != NULL);
assert(pData != NULL);
for (blk_no = address, remaining = length, out = (uint8_t *)pData;
remaining != 0 && error == SDMMC_OK;
blk_no += limited, remaining -= limited,
out += (uint32_t)limited * (uint32_t)BLOCK_SIZE(pSd)) {
limited = (uint16_t)min_u32(remaining, 65535);
error = MoveToTransferState(pSd, blk_no, &limited, out, 1);
}
trace_debug("SDrd(%lu,%lu) %s\n\r", address, length,
SD_StringifyRetCode(error));
return error;
}
It would appear the pCallback is not implemented. I'm going to dig deeper into the framework to see if I can find away of achieving this, any advise would be welcomed.
WM.