void macphy_reset(void)
{
spi_ss(0);
spi_txrx(0xff); /* MAC/PHY soft reset */
spi_ss(1);
}
u8 MSD_WriteBuffer(u8* pBuffer, u32 WriteAddr, u32 NumByteToWrite)
{
u32 i = 0, NbrOfBlock = 0, Offset = 0;
u8 rvalue = MSD_RESPONSE_FAILURE;
/* Calculate number of blocks to write */
NbrOfBlock = NumByteToWrite / BLOCK_SIZE;
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Data transfer */
while (NbrOfBlock --)
{
/* Send CMD24 (MSD_WRITE_BLOCK) to write blocks */
MSD_SendCmd(MSD_WRITE_BLOCK, WriteAddr + Offset, 0xFF);
/* Check if the MSD acknowledged the write block command: R1 response (0x00: no errors) */
if (MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
return MSD_RESPONSE_FAILURE;
}
/* Send dummy byte */
spi_send(DUMMY);
/* Send the data token to signify the start of the data */
spi_send(MSD_START_DATA_SINGLE_BLOCK_WRITE);
/* Write the block data to MSD : write count data by block */
for (i = 0; i < BLOCK_SIZE; i++)
{
/* Send the pointed byte */
spi_send(*pBuffer);
/* Point to the next location where the byte read will be saved */
pBuffer++;
}
/* Set next write address */
Offset += 512;
/* Put CRC bytes (not really needed by us, but required by MSD) */
spi_send(DUMMY);
spi_send(DUMMY);
/* Read data response */
if (MSD_GetDataResponse() == MSD_DATA_OK)
{
/* Set response value to success */
rvalue = MSD_RESPONSE_NO_ERROR;
}
else
{
/* Set response value to failure */
rvalue = MSD_RESPONSE_FAILURE;
}
}
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte: 8 Clock pulses of delay */
spi_send(DUMMY);
/* Returns the reponse */
return rvalue;
}
void macphy_writereg(u8 reg, u8 val)
{
/* CAUTION: You must set the proper bank before calling this routine */
spi_ss(0);
spi_txrx(CMD_WCR(reg));
spi_txrx(val);
spi_ss(1);
}
void macphy_clearbit(u8 reg, u8 val)
{
/* CAUTION: You must set the proper bank before calling this routine */
spi_ss(0);
spi_txrx(CMD_BFC(reg));
spi_txrx(val);
spi_ss(1);
}
/*******************************************************************************
* Function Name : MSD_ReadBuffer
* Description : Reads multiple block of data from the MSD.
* Input : - pBuffer : pointer to the buffer that receives the data read
* from the MSD.
* - ReadAddr : MSD's internal address to read from.
* - NumByteToRead : number of bytes to read from the MSD.
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_ReadBuffer(u8* pBuffer, u32 ReadAddr, u32 NumByteToRead)
{
u32 i = 0, NbrOfBlock = 0, Offset = 0;
u8 rvalue = MSD_RESPONSE_FAILURE;
/* Calculate number of blocks to read */
NbrOfBlock = NumByteToRead / BLOCK_SIZE;
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Data transfer */
while (NbrOfBlock --)
{
/* Send CMD17 (MSD_READ_SINGLE_BLOCK) to read one block */
MSD_SendCmd(MSD_READ_SINGLE_BLOCK, ReadAddr + Offset, 0xFF);
/* Check if the MSD acknowledged the read block command: R1 response (0x00: no errors) */
if (MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
return MSD_RESPONSE_FAILURE;
}
/* Now look for the data token to signify the start of the data */
if (!MSD_GetResponse(MSD_START_DATA_SINGLE_BLOCK_READ))
{
/* Read the MSD block data : read NumByteToRead data */
for (i = 0; i < BLOCK_SIZE; i++)
{
/* Read the pointed data */
*pBuffer = spi_send(DUMMY);
/* Point to the next location where the byte read will be saved */
pBuffer++;
}
/* Set next read address*/
Offset += 512;
/* get CRC bytes (not really needed by us, but required by MSD) */
spi_send(DUMMY);
spi_send(DUMMY);
/* Set response value to success */
rvalue = MSD_RESPONSE_NO_ERROR;
}
else
{
/* Set response value to failure */
rvalue = MSD_RESPONSE_FAILURE;
}
}
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte: 8 Clock pulses of delay */
spi_send(DUMMY);
/* Returns the reponse */
return rvalue;
}
u8 macphy_eth_readreg(u8 reg)
{
u8 x;
/* CAUTION: You must set the proper bank before calling this routine */
spi_ss(0);
spi_txrx(CMD_RCR(reg));
x = spi_txrx(0xff);
spi_ss(1);
return x;
}
/*******************************************************************************
* Function Name : MSD_GetStatus
* Description : Returns the MSD status.
* Input : None
* Output : None
* Return : The MSD status.
*******************************************************************************/
u16 MSD_GetStatus(void)
{
u16 Status = 0;
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD13 (MSD_SEND_STATUS) to get MSD status */
MSD_SendCmd(MSD_SEND_STATUS, 0, 0xFF);
Status = spi_send(DUMMY);
Status |= (u16)(spi_send(DUMMY) << 8);
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte 0xFF */
spi_send(DUMMY);
return Status;
}
/*******************************************************************************
* Function Name : MSD_WriteBlock
* Description : Writes a block on the MSD
* Input : - pBuffer : pointer to the buffer containing the data to be
* written on the MSD.
* - WriteAddr : address to write on.
* - NumByteToWrite: number of data to write
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_WriteBlock(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite)
{
u32 i = 0;
u8 rvalue = MSD_RESPONSE_FAILURE;
return 0;
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD24 (MSD_WRITE_BLOCK) to write multiple block */
MSD_SendCmd(MSD_WRITE_BLOCK, WriteAddr, 0xFF);
/* Check if the MSD acknowledged the write block command: R1 response (0x00: no errors) */
if (!MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
/* Send a dummy byte */
spi_send(DUMMY);
/* Send the data token to signify the start of the data */
spi_send(0xFE);
/* Write the block data to MSD : write count data by block */
for (i = 0; i < NumByteToWrite; i++)
{
/* Send the pointed byte */
spi_send(*pBuffer);
/* Point to the next location where the byte read will be saved */
pBuffer++;
}
/* Put CRC bytes (not really needed by us, but required by MSD) */
spi_send(DUMMY);
spi_send(DUMMY);
/* Read data response */
if (MSD_GetDataResponse() == MSD_DATA_OK)
{
rvalue = MSD_RESPONSE_NO_ERROR;
}
}
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte: 8 Clock pulses of delay */
spi_send(DUMMY);
/* Returns the reponse */
return rvalue;
}
/*******************************************************************************
* Function Name : MSD_ReadBlock
* Description : Reads a block of data from the MSD.
* Input : - pBuffer : pointer to the buffer that receives the data read
* from the MSD.
* - ReadAddr : MSD's internal address to read from.
* - NumByteToRead : number of bytes to read from the MSD.
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_ReadBlock(u8* pBuffer, u32 ReadAddr, u16 NumByteToRead)
{
u32 i = 0;
u8 rvalue = MSD_RESPONSE_FAILURE;
return 0;
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD17 (MSD_READ_SINGLE_BLOCK) to read one block */
MSD_SendCmd(MSD_READ_SINGLE_BLOCK, ReadAddr, 0xFF);
/* Check if the MSD acknowledged the read block command: R1 response (0x00: no errors) */
if (!MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
/* Now look for the data token to signify the start of the data */
if (!MSD_GetResponse(MSD_START_DATA_SINGLE_BLOCK_READ))
{
/* Read the MSD block data : read NumByteToRead data */
for (i = 0; i < NumByteToRead; i++)
{
/* Save the received data */
*pBuffer = spi_send(DUMMY);
/* Point to the next location where the byte read will be saved */
pBuffer++;
}
/* Get CRC bytes (not really needed by us, but required by MSD) */
spi_send(DUMMY);
spi_send(DUMMY);
/* Set response value to success */
rvalue = MSD_RESPONSE_NO_ERROR;
}
}
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte: 8 Clock pulses of delay */
spi_send(DUMMY);
/* Returns the reponse */
return rvalue;
}
/*******************************************************************************
* Function Name : MSD_GoIdleState
* Description : Put MSD in Idle state.
* Input : None
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_GoIdleState(void)
{
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD0 (GO_IDLE_STATE) to put MSD in SPI mode */
MSD_SendCmd(MSD_GO_IDLE_STATE, 0, 0x95);
/* Wait for In Idle State Response (R1 Format) equal to 0x01 */
if (MSD_GetResponse(MSD_IN_IDLE_STATE))
{
/* No Idle State Response: return response failue */
return MSD_RESPONSE_FAILURE;
}
/*----------Activates the card initialization process-----------*/
do
{
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send Dummy byte 0xFF */
spi_send(DUMMY);
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD1 (Activates the card process) until response equal to 0x0 */
MSD_SendCmd(MSD_SEND_OP_COND, 0, 0xFF);
/* Wait for no error Response (R1 Format) equal to 0x00 */
}
while (MSD_GetResponse(MSD_RESPONSE_NO_ERROR));
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte 0xFF */
spi_send(DUMMY);
return MSD_RESPONSE_NO_ERROR;
}
u8 MSD_Init(void)
{
u32 i = 0;
/* Initialize SPI1 */
spi_init();
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte 0xFF, 10 times with CS high*/
/* rise CS and MOSI for 80 clocks cycles */
for (i = 0; i <= 9; i++)
{
/* Send dummy byte 0xFF */
spi_send(DUMMY);
}
/*------------Put MSD in SPI mode--------------*/
/* MSD initialized and set to SPI mode properly */
return (MSD_GoIdleState());
}
/* Transfers packet to ENC28J60 and initiates packet transmission */
void macphy_sendpkt(void)
{
u16 i;
u8 x;
u8 rlo, rhi;
u8 status[7];
//u8* ptr_uip_appdata;
//ptr_uip_appdata = (u8 *)(uip_appdata);
/* Everything we need is in bank 0 */
macphy_setbank(0);
/* Retrieve the rx pointer location -- set it back after we're done */
rlo = macphy_eth_readreg(ERDPTL);
rhi = macphy_eth_readreg(ERDPTH);
macphy_clearbit(ESTAT, TXABRT);
macphy_clearbit(ESTAT, LATECOL);
/* This code catches a potential silicon errata with the ENC28J60 */
x = macphy_eth_readreg(ECON1);
while (x & TXRTS) {
x = macphy_eth_readreg(EIR);
if (x & TXERIF) {
/* Chip is stuck. Reset */
//cprintf(C" -> MAC TX is stuck. Reset. \r\n");
Serial_PrintString("MAC TX is stuck. Reset. \r\n");
macphy_setbit(ECON1, TXRST);
macphy_clearbit(ECON1, TXRST);
macphy_clearbit(EIR, TXERIF);
}
x = macphy_eth_readreg(ECON1);
}
/* Set the SPI write buffer pointer location */
macphy_writereg(EWRPTL, 0x00);
macphy_writereg(EWRPTH, 0x10);
//Serial_PrintString("macphy_sendpkt() uip_len=");
//Serial_PrintNumber(uip_len);
//Serial_PrintString("\r\n");
/* Write the link-layer header to the chip */
/* SPI Write Pointer Start (ETXSTL) already set by macphy_init() */
spi_ss(0);
spi_txrx(CMD_WBM);
spi_txrx(0x00); /* "options" byte header needed by the ENC chip */
for (i = 0; i < UIP_LLH_LEN; i++) {
/* uip_buf starts at offset 6, first 6 bytes are from the old RX packet */
spi_txrx(pkt_buf[6+i]);
}
if (uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {
/* Probably an ARP update or somesuch. No need to send appdata */
for (i = 0; i < uip_len - UIP_LLH_LEN; i++) {
spi_txrx(pkt_buf[6+UIP_LLH_LEN+i]);
}
} else {
/* We have link-layer header, IP header, and appdata */
for (i = 0; i < UIP_TCPIP_HLEN; i++) {
/* IP header */
spi_txrx(pkt_buf[6+UIP_LLH_LEN+i]);
}
for (i = 0; i < uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN; i++) {
spi_txrx(((u8 *)uip_appdata)[i]);
//spi_txrx(*ptr_uip_appdata);
//ptr_uip_appdata++;
}
}
spi_ss(1);
/* Set the MAC TX end pointer */
macphy_writereg(ETXNDL, (0x1000 + uip_len) & 0x00ff);
macphy_writereg(ETXNDH, (0x1000 + uip_len) >> 8);
/* Fire and forget! */
macphy_setbit(ECON1, TXRTS);
/* Just in case, clear the transmit abort and late collision flags */
macphy_clearbit(ESTAT, TXABRT);
macphy_clearbit(ESTAT, LATECOL);
}
/* Reads packet from the ENC28J60 and decrements pktcnt */
void macphy_readpkt(void)
{
u8 rlo, rhi;
u32 i, plen, nxtpkt, rptr;
macphy_setbank(0);
/* Retrieve the rx pointer location */
rlo = macphy_eth_readreg(ERDPTL);
rhi = macphy_eth_readreg(ERDPTH);
rptr = (rhi << 8) + rlo;
spi_ss(0);
spi_txrx(CMD_RBM);
pkt_buf[0] = spi_txrx(0xff); /* Next packet pointer LSB */
pkt_buf[1] = spi_txrx(0xff); /* Next packet pointer MSB */
pkt_buf[2] = spi_txrx(0xff); /* status[7:0] */
pkt_buf[3] = spi_txrx(0xff); /* status[15:8] */
pkt_buf[4] = spi_txrx(0xff); /* status[23:16] */
pkt_buf[5] = spi_txrx(0xff); /* status[31:24] */
/* Calculate the remaining length of this packet */
nxtpkt = plen = (pkt_buf[1] << 8) + pkt_buf[0];
if (nxtpkt < rptr) {
/* Wrapping case */
/* Explanation: RX buffer ends at byte 0xfff, so bytes between rptr and 0x1000 are */
/* part of the packet, plus the stuff that wrapped around to nxtpkt. Since plen holds */
/* nxtpkt already, we just need to add in the bytes before the wrap */
plen += (0x1000 - rptr);
} else {
/* Normal case */
plen -= rptr;
}
if (plen > (MAX_ETH_FRAMELEN + 6 + 1)) {
//cprintf(C" - !! - PACKET LENGTH CORRUPTION - !! -\r\n");
Serial_PrintString(" - !! - PACKET LENGTH CORRUPTION - !! -\r\n");
while (1);
}
/* Could be off by one here due to the word alignment. If so, go ahead and accept. */
if ((plen != ((pkt_buf[3] << 8) + pkt_buf[2] + 6)) &&
(plen != ((pkt_buf[3] << 8) + pkt_buf[2] + 7))) {
//cprintf(C" - !! - PACKET LENGTH MISMATCH - !! -\r\n");
Serial_PrintString(" - !! - PACKET LENGTH MISMATCH - !! -\r\n");
//cprintf(C" Status Vector said 0x%02x%02x (+6/+7), plen = 0x%04x\r\n", pkt_buf[3], pkt_buf[2], plen);
Serial_PrintString(" Status Vector said, plen= ");
Serial_PrintNumber(plen);
Serial_PrintString("\r\n pkt_buf[3]= ");
Serial_PrintByte(pkt_buf[3], 1);
Serial_PrintString("\r\n pkt_buf[2]= ");
Serial_PrintByte(pkt_buf[2], 1);
//cprintf(C" Next packet pointer = 0x%02x%02x\r\n", pkt_buf[1], pkt_buf[0]);
Serial_PrintString("\r\n Next packet pointer : pkt_buf[1]= ");
Serial_PrintByte(pkt_buf[1], 1);
Serial_PrintString("pkt_buf[0]= ");
Serial_PrintByte(pkt_buf[0], 1);
//cprintf(C" SPI Read Pointer = 0x%04x\r\n", rptr);
Serial_PrintString("\r\n SPI Read Pointer = ");
Serial_PrintNumber(rptr);
Serial_PrintString("\r\n");
macphy_readback();
}
/* Ethernet frame follows here */
for (i = 6; i < plen; i++) {
pkt_buf[i] = spi_txrx(0xff);
}
spi_ss(1);
/* Free up space by moving ERXRDPT forward and setting the PKTDEC bit */
if (nxtpkt > 0xfff) {
//cprintf(C" - !! - NEXT PACKET POINTER CORRUPTION - !! -\r\n");
Serial_PrintString(" - !! - NEXT PACKET POINTER CORRUPTION - !! -\r\n");
while (1);
}
nxtpkt -= 1;
if (nxtpkt > 0xfff) {
/* Wrap around. Fix up. */
nxtpkt = 0xfff;
}
macphy_writereg(ERXRDPTL, nxtpkt & 0xff);
macphy_writereg(ERXRDPTH, nxtpkt >> 8);
macphy_pktdec();
}
/*******************************************************************************
* Function Name : MSD_GetCIDRegister
* Description : Read the CID card register.
* Reading the contents of the CID register in SPI mode
* is a simple read-block transaction.
* Input : - MSD_cid: pointer on an CID register structure
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_GetCIDRegister(sMSD_CID* MSD_cid)
{
u32 i = 0;
u8 rvalue = MSD_RESPONSE_FAILURE;
u8 CID_Tab[16];
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD10 (CID register) */
MSD_SendCmd(MSD_SEND_CID, 0, 0xFF);
/* Wait for response in the R1 format (0x00 is no errors) */
if (!MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
if (!MSD_GetResponse(MSD_START_DATA_SINGLE_BLOCK_READ))
{
/* Store CID register value on CID_Tab */
for (i = 0; i < 16; i++)
{
CID_Tab[i] = spi_send(DUMMY);
}
}
/* Get CRC bytes (not really needed by us, but required by MSD) */
spi_send(DUMMY);
spi_send(DUMMY);
/* Set response value to success */
rvalue = MSD_RESPONSE_NO_ERROR;
}
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte: 8 Clock pulses of delay */
spi_send(DUMMY);
/* Byte 0 */
MSD_cid->ManufacturerID = CID_Tab[0];
/* Byte 1 */
MSD_cid->OEM_AppliID = CID_Tab[1] << 8;
/* Byte 2 */
MSD_cid->OEM_AppliID |= CID_Tab[2];
/* Byte 3 */
MSD_cid->ProdName1 = CID_Tab[3] << 24;
/* Byte 4 */
MSD_cid->ProdName1 |= CID_Tab[4] << 16;
/* Byte 5 */
MSD_cid->ProdName1 |= CID_Tab[5] << 8;
/* Byte 6 */
MSD_cid->ProdName1 |= CID_Tab[6];
/* Byte 7 */
MSD_cid->ProdName2 = CID_Tab[7];
/* Byte 8 */
MSD_cid->ProdRev = CID_Tab[8];
/* Byte 9 */
MSD_cid->ProdSN = CID_Tab[9] << 24;
/* Byte 10 */
MSD_cid->ProdSN |= CID_Tab[10] << 16;
/* Byte 11 */
MSD_cid->ProdSN |= CID_Tab[11] << 8;
/* Byte 12 */
MSD_cid->ProdSN |= CID_Tab[12];
/* Byte 13 */
MSD_cid->Reserved1 |= (CID_Tab[13] & 0xF0) >> 4;
/* Byte 14 */
MSD_cid->ManufactDate = (CID_Tab[13] & 0x0F) << 8;
/* Byte 15 */
MSD_cid->ManufactDate |= CID_Tab[14];
/* Byte 16 */
MSD_cid->CRC = (CID_Tab[15] & 0xFE) >> 1;
MSD_cid->Reserved2 = 1;
/* Return the reponse */
return rvalue;
}
/*******************************************************************************
* Function Name : MSD_GetCSDRegister
* Description : Read the CSD card register.
* Reading the contents of the CSD register in SPI mode
* is a simple read-block transaction.
* Input : - MSD_csd: pointer on an SCD register structure
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_GetCSDRegister(sMSD_CSD* MSD_csd)
{
u32 i = 0;
u8 rvalue = MSD_RESPONSE_FAILURE;
u8 CSD_Tab[16];
/* MSD chip select low */
spi_ss(_FLASH_NUM0,0);
/* Send CMD9 (CSD register) or CMD10(CSD register) */
MSD_SendCmd(MSD_SEND_CSD, 0, 0xFF);
/* Wait for response in the R1 format (0x00 is no errors) */
if (!MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
if (!MSD_GetResponse(MSD_START_DATA_SINGLE_BLOCK_READ))
{
for (i = 0; i < 16; i++)
{
/* Store CSD register value on CSD_Tab */
CSD_Tab[i] = spi_send(DUMMY);
}
}
/* Get CRC bytes (not really needed by us, but required by MSD) */
spi_send(DUMMY);
spi_send(DUMMY);
/* Set response value to success */
rvalue = MSD_RESPONSE_NO_ERROR;
}
/* MSD chip select high */
spi_ss(_FLASH_NUM0,1);
/* Send dummy byte: 8 Clock pulses of delay */
spi_send(DUMMY);
/* Byte 0 */
MSD_csd->CSDStruct = (CSD_Tab[0] & 0xC0) >> 6;
MSD_csd->SysSpecVersion = (CSD_Tab[0] & 0x3C) >> 2;
MSD_csd->Reserved1 = CSD_Tab[0] & 0x03;
/* Byte 1 */
MSD_csd->TAAC = CSD_Tab[1] ;
/* Byte 2 */
MSD_csd->NSAC = CSD_Tab[2];
/* Byte 3 */
MSD_csd->MaxBusClkFrec = CSD_Tab[3];
/* Byte 4 */
MSD_csd->CardComdClasses = CSD_Tab[4] << 4;
/* Byte 5 */
MSD_csd->CardComdClasses |= (CSD_Tab[5] & 0xF0) >> 4;
MSD_csd->RdBlockLen = CSD_Tab[5] & 0x0F;
/* Byte 6 */
MSD_csd->PartBlockRead = (CSD_Tab[6] & 0x80) >> 7;
MSD_csd->WrBlockMisalign = (CSD_Tab[6] & 0x40) >> 6;
MSD_csd->RdBlockMisalign = (CSD_Tab[6] & 0x20) >> 5;
MSD_csd->DSRImpl = (CSD_Tab[6] & 0x10) >> 4;
MSD_csd->Reserved2 = 0; /* Reserved */
MSD_csd->DeviceSize = (CSD_Tab[6] & 0x03) << 10;
/* Byte 7 */
MSD_csd->DeviceSize |= (CSD_Tab[7]) << 2;
/* Byte 8 */
MSD_csd->DeviceSize |= (CSD_Tab[8] & 0xC0) >> 6;
MSD_csd->MaxRdCurrentVDDMin = (CSD_Tab[8] & 0x38) >> 3;
MSD_csd->MaxRdCurrentVDDMax = (CSD_Tab[8] & 0x07);
/* Byte 9 */
MSD_csd->MaxWrCurrentVDDMin = (CSD_Tab[9] & 0xE0) >> 5;
MSD_csd->MaxWrCurrentVDDMax = (CSD_Tab[9] & 0x1C) >> 2;
MSD_csd->DeviceSizeMul = (CSD_Tab[9] & 0x03) << 1;
/* Byte 10 */
MSD_csd->DeviceSizeMul |= (CSD_Tab[10] & 0x80) >> 7;
MSD_csd->EraseGrSize = (CSD_Tab[10] & 0x7C) >> 2;
MSD_csd->EraseGrMul = (CSD_Tab[10] & 0x03) << 3;
/* Byte 11 */
MSD_csd->EraseGrMul |= (CSD_Tab[11] & 0xE0) >> 5;
MSD_csd->WrProtectGrSize = (CSD_Tab[11] & 0x1F);
/* Byte 12 */
MSD_csd->WrProtectGrEnable = (CSD_Tab[12] & 0x80) >> 7;
MSD_csd->ManDeflECC = (CSD_Tab[12] & 0x60) >> 5;
MSD_csd->WrSpeedFact = (CSD_Tab[12] & 0x1C) >> 2;
MSD_csd->MaxWrBlockLen = (CSD_Tab[12] & 0x03) << 2;
/* Byte 13 */
MSD_csd->MaxWrBlockLen |= (CSD_Tab[13] & 0xc0) >> 6;
MSD_csd->WriteBlockPaPartial = (CSD_Tab[13] & 0x20) >> 5;
MSD_csd->Reserved3 = 0;
MSD_csd->ContentProtectAppli = (CSD_Tab[13] & 0x01);
/* Byte 14 */
MSD_csd->FileFormatGrouop = (CSD_Tab[14] & 0x80) >> 7;
MSD_csd->CopyFlag = (CSD_Tab[14] & 0x40) >> 6;
MSD_csd->PermWrProtect = (CSD_Tab[14] & 0x20) >> 5;
MSD_csd->TempWrProtect = (CSD_Tab[14] & 0x10) >> 4;
MSD_csd->FileFormat = (CSD_Tab[14] & 0x0C) >> 2;
MSD_csd->ECC = (CSD_Tab[14] & 0x03);
/* Byte 15 */
MSD_csd->CRC = (CSD_Tab[15] & 0xFE) >> 1;
MSD_csd->Reserved4 = 1;
/* Return the reponse */
return rvalue;
}