bool SdioDmaSdCard::waitForTransfer() const {
// first wait for the SDIO interrupt
while(!_sdioFinished);
while(!_dmaFinished);
// clear static flags
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
// check for error
return _sdioErrorCode==ErrorProvider::ERROR_NO_ERROR && _dmaErrorCode==ErrorProvider::ERROR_NO_ERROR;
}
/*************************************************************************
* Function Name: _SdSendCmd
* Parameters: SdCmdInd_t ComdInd,Int32U Arg
*
* Return: SdState_t
*
* Description: SD/MMC commands implement
*
*************************************************************************/
static
SdState_t _SdSendCmd(SdCmdInd_t ComdInd,pInt32U pArg)
{
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
Int32U Status;
Int32U timeout;
// Send Command
SDIO_CmdInitStructure.SDIO_CmdIndex = _SdCmd[ComdInd].TxData;
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
if(pArg != NULL)
{
switch(_SdCmd[ComdInd].Resp)
{
case SdR2:
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
break;
case SdR1:
case SdR1b:
case SdR3:
case SdR7:
SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
}
}
// Send command's arguments
if(_SdCmd[ComdInd].Arg != SdNoArg)
{
SDIO_CmdInitStructure.SDIO_Argument = *pArg;
}
else
{
SDIO_CmdInitStructure.SDIO_Argument = 0;
}
// Clear all the static flags
SDIO_ClearFlag(SDIO_STATIC_FLAGS);
SDIO_SendCommand(&SDIO_CmdInitStructure);
// Wait command respond
if(CMD0 == ComdInd)
{
timeout = SDIO_CMD0TIMEOUT;
do
{
if(0 == --timeout)
{
// Clear all the static flags
return(SdNoResponse);
}
Status = SDIO->STA;
}
while (0 == (Status & SDIO_FLAG_CMDSENT));
}
else
{
do
{
Status = SDIO->STA;
}
while(!(Status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)));
}
SDIO_ClearFlag(SDIO_FLAG_CMDSENT);
if (Status & SDIO_FLAG_CTIMEOUT)
{
SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
return(SdNoResponse);
}
if (Status & SDIO_FLAG_CCRCFAIL)
{
SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
switch(_SdCmd[ComdInd].TxData)
{
// Ignore CRC Error
case 1: // CMD1
case 41: // ACMD42
case 12: // CMD12
break;
default:
return(SdCardError);
}
}
if(pArg != NULL)
{
switch (_SdCmd[ComdInd].Resp)
{
case SdNoResp:
break;
case SdR3:
case SdR7:
*pArg = SDIO_GetResponse(SDIO_RESP1);
break;
case SdR2:
*pArg++ = SDIO_GetResponse(SDIO_RESP1);
*pArg++ = SDIO_GetResponse(SDIO_RESP2);
*pArg++ = SDIO_GetResponse(SDIO_RESP3);
*pArg++ = SDIO_GetResponse(SDIO_RESP4);
break;
default:
// Check response received is of desired command
if (SDIO_GetCommandResponse() != _SdCmd[ComdInd].TxData)
{
return(SdCardError);
}
*pArg = SDIO_GetResponse(SDIO_RESP1);
}
}
SDIO_ClearFlag(SDIO_FLAG_CMDREND);
return(SdOk);
}
