硬件：STM32F103VDT，SD卡工作于SDIO模式；
问题：手上有2张SD卡，一张是128MB，一张是16GB；
128MB的卡，块读、块写、块擦除都OK；
16GB的卡，块读和块写OK，但块擦除不行。擦除命令下发后，从命令响应来看没有问题，但被擦的块读出来，内容没有变；
不知大家是否碰到类似的问题？16GB的卡和128MB的卡有什么不同？
UCHAR SD_Erase(ULONG startblock, ULONG endblock, USHORT blocksize)
{
ULONG delaytime;
UCHAR cardstate = 0;
UCHAR status;
ULONG startAdr,endAdr,ulTemp;
startAdr=startblock;
endAdr=endblock;
/*!< Check if the card coomnd class supports erase command */
if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
{
return SD_REQUEST_NOT_APPLICABLE;
}
if (SDIO_RESP1 & SD_CARD_LOCKED) //card is locked
{
return SD_LOCK_UNLOCK_FAILED;
}
if (CardType == SD_STD_CAPACITY)
{
startAdr *= blocksize;
endAdr *= blocksize;
}
if ((SD_CARD_V1_1== CardType) || (SD_CARD_V2_0 == CardType))
{
SDIO_SendCMD(SD_CMD_SD_ERASE_GRP_START, startAdr, SDIO_RESP_SHORT);
status=SDIO_Resp1State(SD_CMD_SD_ERASE_GRP_START, &ulTemp);
if(status != OK)
{
return FAIL;
}
SDIO_SendCMD(SD_CMD_SD_ERASE_GRP_END, endAdr, SDIO_RESP_SHORT);
status=SDIO_Resp1State(SD_CMD_SD_ERASE_GRP_END, &ulTemp);
if(status != OK)
{
return FAIL;
}
}
SDIO_SendCMD(SD_CMD_ERASE, 0, SDIO_RESP_SHORT);
status=SDIO_Resp1State(SD_CMD_ERASE, &ulTemp);
if(status != OK)
{
return FAIL;
}
delaytime = 120000 / ((SDIO_CLKCR & 0xFF) + 2);
while(delaytime--);
status = IsCardProgramming(&cardstate);
while ((status == OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
{
status = IsCardProgramming(&cardstate);
}
return status;
}
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