Posted on May 17, 2011 at 14:07I rewrite the code,There are few
Changes
in the sdcard.c.
I try to attach the new project,but the Great Fire Wall......you know......
so.the changs below:
SD_Error SD_EnableWideBusOperation(u32 WideMode)
{
SD_Error errorstatus = SD_OK;
/* MMC Card doesn't support this feature */
if (SDIO_MULTIMEDIA_CARD == CardType)
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return(errorstatus);
}
else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
if (SDIO_BusWide_8b == WideMode)
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return(errorstatus);
}
else if (SDIO_BusWide_4b == WideMode)
{
errorstatus = SDEnWideBus(ENABLE);
if (SD_OK == errorstatus)
{
/* Configure the SDIO peripheral */
// SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV + 9;//6M
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
// SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
}
}
-----------------------------------------------------------------
SD_Error SD_WriteMultiBlocks(u32 addr, u32 *writebuff, u16 BlockSize, u32 NumberOfBlocks)
{
............................................
DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));
while ((DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET) && (DMA_GetFlagStatus(DMA2_FLAG_TE4) == RESET) && (TransferError == SD_OK)); // TransferError set by interrupt handler.
if (DMA_GetFlagStatus(DMA2_FLAG_TE4)==SET) TransferError = SD_ERROR; //uart_puts(''DMA Transfer error\n'');
if (TransferError!=SD_OK) return(TransferError);
// while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
// {}
while ((TransferEnd == 0) && (TransferError == SD_OK))
{}
if (TransferError != SD_OK)
{
return(TransferError);
}
}
}
/* Clear all the static flags */
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
/* Wait till the card is in programming state *///�?等待flash擦写完毕
// errorstatus = IsCardProgramming(&cardstate);
//
// while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
// {
// errorstatus = IsCardProgramming(&cardstate);
// }
return(errorstatus);
}
............................................
FRESULT f_write (
FIL *fp, /* Pointer to the file object */
const void *buff, /* Pointer to the data to be written */
UINT btw, /* Number of bytes to write */
UINT *bw /* Pointer to number of bytes written */
)
...........................
for ( ; btw; /* Repeat until all data transferred */
wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
if (fp->csect >= fp->fs->csize) { /* On the cluster boundary? */
if (fp->fptr == 0) { /* On the top of the file? */
clst = fp->org_clust; /* Follow from the origin */
if (clst == 0) /* When there is no cluster chain, */
fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
} else { /* Middle or end of the file */
clst = create_chain(fp->fs, fp->curr_clust); /* Follow or streach cluster chain */
}
if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
fp->curr_clust = clst; /* Update current cluster */
fp->csect = 0; /* Reset sector address in the cluster */
}
//before i am writting,i format the clusters to 32KB because i write less than 32KB one time
.........................
