/*******************************************************************************
* Function Name : _send_command_hold
* Description : None
* Input : - cmd:
* - arg:
* - crc:
* Output : None
* Return : R1 value, response from card
* Attention : None
*******************************************************************************/
int _send_command_hold(uint8_t cmd, uint32_t arg, uint8_t crc)
{
uint8_t r1;
uint8_t retry;
/* Dummy byte and chip enable */
_spi_read_write(DUMMY_BYTE);
_card_enable();
/* Command, argument and crc */
_spi_read_write(cmd | 0x40);
_spi_read_write(arg >> 24);
_spi_read_write(arg >> 16);
_spi_read_write(arg >> 8);
_spi_read_write(arg);
_spi_read_write(crc);
/* Wait response, quit till timeout */
for(retry = 0; retry < 200; retry++)
{
r1 = _spi_read_write(DUMMY_BYTE);
if(r1 != 0xFF)
{
break;
}
}
return r1;
}
/*******************************************************************************
* Function Name : MSD_SendCmd
* Description : Send 5 bytes command to the MSD card.
* Input : - Cmd: the user expected command to send to MSD card
* - Arg: the command argument
* - Crc: the CRC
* Output : None
* Return : None
*******************************************************************************/
void MSD_SendCmd(u8 Cmd, u32 Arg, u8 Crc)
{
u32 i = 0x00;
u8 Frame[6];
/* Construct byte1 */
Frame[0] = (Cmd | 0x40);
/* Construct byte2 */
Frame[1] = (u8)(Arg >> 24);
/* Construct byte3 */
Frame[2] = (u8)(Arg >> 16);
/* Construct byte4 */
Frame[3] = (u8)(Arg >> 8);
/* Construct byte5 */
Frame[4] = (u8)(Arg);
/* Construct CRC: byte6 */
Frame[5] = (Crc);
/* Send the Cmd bytes */
for (i = 0; i < 6; i++)
{
//MSD_WriteByte(Frame[i]);
_spi_read_write(Frame[i]);
}
}
/*******************************************************************************
* Function Name : _read_buffer
* Description : None
* Input : - *buff:
* - len:
* - release:
* Output : None
* Return : 0：NO_ERR; TRUE: Error
* Attention : None
*******************************************************************************/
int _read_buffer(uint8_t *buff, uint16_t len, uint8_t release)
{
uint8_t r1;
uint16_t retry;
/* Card enable, Prepare to read */
_card_enable();
/* Wait start-token 0xFE */
for(retry = 0; retry < 2000; retry++)
{
r1 = _spi_read_write(DUMMY_BYTE);
if(r1 == 0xFE)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 2000)
{
_card_disable();
return 1;
}
/* Start reading */
for(retry = 0; retry < len; retry++)
{
*(buff + retry) = _spi_read_write(DUMMY_BYTE);
}
/* 2bytes dummy CRC */
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* chip disable and dummy byte */
if(release)
{
_card_disable();
_spi_read_write(DUMMY_BYTE);
}
return 0;
}
/*******************************************************************************
* Function Name : MSD_GetDataResponse
* Description : Get MSD card data response.
* Input : None
* Output : None
* Return : The MSD status: Read data response xxx0<status>1
* - status 010: Data accecpted
* - status 101: Data rejected due to a crc error
* - status 110: Data rejected due to a Write error.
* - status 111: Data rejected due to other error.
*******************************************************************************/
u8 MSD_GetDataResponse(void)
{
u32 i = 0;
u8 response, rvalue;
while (i <= 64)
{
/* Read resonse */
//response = MSD_ReadByte();
response = _spi_read_write(DUMMY_BYTE);
/* Mask unused bits */
response &= 0x1F;
switch (response)
{
case MSD_DATA_OK:
{
rvalue = MSD_DATA_OK;
break;
}
case MSD_DATA_CRC_ERROR:
return MSD_DATA_CRC_ERROR;
case MSD_DATA_WRITE_ERROR:
return MSD_DATA_WRITE_ERROR;
default:
{
rvalue = MSD_DATA_OTHER_ERROR;
break;
}
}
/* Exit loop in case of data ok */
if (rvalue == MSD_DATA_OK)
break;
/* Increment loop counter */
i++;
}
/* Wait null data */
while (_spi_read_write(DUMMY_BYTE) == 0);
/* Return response */
return response;
}
/*******************************************************************************
* Function Name : MSD_GetResponse
* Description : Returns the MSD response.
* Input : None
* Output : None
* Return : The MSD Response: - MSD_RESPONSE_FAILURE: Sequence failed
* - MSD_RESPONSE_NO_ERROR: Sequence succeed
*******************************************************************************/
u8 MSD_GetResponse(u8 Response)
{
u32 Count = 0xFFF;
/* Check if response is got or a timeout is happen */
while ((_spi_read_write(DUMMY_BYTE) != Response) && Count)
{
Count--;
}
if (Count == 0)
{
/* After time out */
return MSD_RESPONSE_FAILURE;
}
else
{
/* Right response got */
return MSD_RESPONSE_NO_ERROR;
}
}
/*******************************************************************************
* Function Name : MSD_ReadMultiBlock
* Description : None
* Input : - sector:
* - buffer:
* - NbrOfSector:
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_ReadMultiBlock(uint32_t sector, uint8_t *buffer, uint32_t NbrOfSector)
{
uint8_t r1;
uint32_t i;
/* if ver = SD2.0 HC, sector need <<9 */
if(CardInfo.CardType != CARDTYPE_SDV2HC)
{
sector = sector<<9;
}
/* Send CMD18 : Read multi block command */
r1 = _send_command(CMD18, sector, 0);
if(r1 != 0x00)
{
return 1;
}
/* Start read */
for(i=0; i<NbrOfSector; i++)
{
if(_read_buffer(buffer+i*MSD_BLOCKSIZE, MSD_BLOCKSIZE, HOLD))
{
/* Send stop data transmit command - CMD12 */
_send_command(CMD12, 0, 0);
/* chip disable and dummy byte */
;
return 2;
}
}
/* Send stop data transmit command - CMD12 */
_send_command(CMD12, 0, 0);
/* chip disable and dummy byte */
_CARD_DISABLE();
_spi_read_write(DUMMY_BYTE);
return 0;
}
/*******************************************************************************
* Function Name : MSD_ReadSingleBlock
* Description : None
* Input : - sector:
* - buffer:
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_ReadSingleBlock_DMA(uint32_t sector, uint8_t *buffer)
{
DMA_InitTypeDef DMA_InitStructure;
u8 rvalue = MSD_RESPONSE_FAILURE;
uint8_t r1;
uint16_t retry;
char DuumyClock = DUMMY_BYTE;
if(CardInfo.CardType != CARDTYPE_SDV2HC)
{
sector = sector << 9;
}
/*initial dma channel 2*/
DMA_DeInit(DMA1_Channel4);
DMA_DeInit(DMA1_Channel5);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&SPI2->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 200;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel4, &DMA_InitStructure);
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&DuumyClock; //512字节的dummy
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
DMA_Init(DMA1_Channel5, &DMA_InitStructure);
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Tx, ENABLE);
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Rx, ENABLE);
// DMA_ClearFlag(DMA_FLAG_TC2);
/* Send CMD17 : Read single block command */
r1 = _send_command(CMD17, sector, 0);
if(r1 != 0x00)
{
return 1;
}
/* Card enable, Prepare to read */
_card_enable();
/* Wait start-token 0xFE */
for(retry = 0; retry < 2000; retry++)
{
r1 = _spi_read_write(DUMMY_BYTE);
if(r1 == 0xFE)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 2000)
{
_card_disable();
return 1;
}
DMA_Cmd(DMA1_Channel5, ENABLE);
DMA_Cmd(DMA1_Channel4, ENABLE);
while(!DMA_GetFlagStatus(DMA1_FLAG_TC5));
while(!DMA_GetFlagStatus(DMA1_FLAG_TC4));
DMA_ClearFlag(DMA1_FLAG_TC4);
/* 2bytes dummy CRC */
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* chip disable and dummy byte */
_card_disable();
_spi_read_write(DUMMY_BYTE);
/* Set response value to success */
rvalue = MSD_RESPONSE_NO_ERROR;
DMA_Cmd(DMA1_Channel4, DISABLE);
DMA_Cmd(DMA1_Channel5, DISABLE);
/* Returns the reponse */
return rvalue;
}
/*******************************************************************************
* Function Name : MSD_Init
* Description : SD Card initializtion
* Input : None
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_Init(void)
{
uint8_t r1;
uint8_t buff[6] = {0};
uint16_t retry;
uint16_t retry_time = 5;
// uint32 lu32SDStatus = 0;
// uint8 err;
gu8SDStatus = 0;
/* Check , if no card insert */
//if( _card_insert() )
//{
/* FATFS error flag */
//return -1;
//}
/* Power on and delay some times */
for(retry = 0; retry < 0x100; retry++)
{
_card_power_on();
}
/* Satrt send 74 clocks at least */
for(retry = 0; retry < 10; retry++)
{
_spi_read_write(DUMMY_BYTE);
}
/* Start send CMD0 till return 0x01 means in IDLE state */
/*begin:yangfei modified 2013-09-28 for SD卡重试次数太多，等待时间太长，SD卡正常的时候只需1次就能成功*/
#if 0
for(retry = 0; retry < 0xFFF; retry++)
#else
for(retry = 0; retry < retry_time; retry++)
#endif
{
r1 = _send_command(CMD0, 0, 0x95);
if(r1 == 0x01)
{
retry = 0;
break;
}
}
/* Timeout return */
#if 0
if(retry == 0xFFF)
#else
if(retry == retry_time)
#endif
{
gu8SDStatus = 1;
return 1;
}
/*end:yangfei modified 2013-09-28 for SD卡重试次数太多，等待时间太长，SD卡正常的时候只需1次就能成功*/
/* Get the card type, version */
r1 = _send_command_hold(CMD8, 0x1AA, 0x87);
/* r1=0x05 -> V1.0 */
if(r1 == 0x05)
{
CardInfo.CardType = CARDTYPE_SDV1;
/* End of CMD8, chip disable and dummy byte */
_card_disable();
_spi_read_write(DUMMY_BYTE);
/* SD1.0/MMC start initialize */
/* Send CMD55+ACMD41, No-response is a MMC card, otherwise is a SD1.0 card */
for(retry = 0; retry < 0xFFF; retry++)
{
r1 = _send_command(CMD55, 0, 0); /* should be return 0x01 */
if(r1 != 0x01)
{
return r1;
}
r1 = _send_command(ACMD41, 0, 0); /* should be return 0x00 */
if(r1 == 0x00)
{
retry = 0;
break;
}
}
/* MMC card initialize start */
if(retry == 0xFFF)
{
for(retry = 0; retry < 0xFFF; retry++)
{
r1 = _send_command(CMD1, 0, 0); /* should be return 0x00 */
if(r1 == 0x00)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 0xFFF)
{
gu8SDStatus = 2;
return 2;
}
CardInfo.CardType = CARDTYPE_MMC;
}
/* Set spi speed high */
MSD_SPIHighSpeed(1);
/* CRC disable */
r1 = _send_command(CMD59, 0, 0x01);
if(r1 != 0x00)
{
return r1; /* response error, return r1 */
}
/* Set the block size */
r1 = _send_command(CMD16, MSD_BLOCKSIZE, 0xFF);
if(r1 != 0x00)
{
return r1; /* response error, return r1 */
}
}
/* r1=0x01 -> V2.x, read OCR register, check version */
else if(r1 == 0x01)
{
/* 4Bytes returned after CMD8 sent */
buff[0] = _spi_read_write(DUMMY_BYTE); /* should be 0x00 */
buff[1] = _spi_read_write(DUMMY_BYTE); /* should be 0x00 */
buff[2] = _spi_read_write(DUMMY_BYTE); /* should be 0x01 */
buff[3] = _spi_read_write(DUMMY_BYTE); /* should be 0xAA */
/* End of CMD8, chip disable and dummy byte */
_card_disable();
_spi_read_write(DUMMY_BYTE);
/* Check voltage range be 2.7-3.6V */
if(buff[2] == 0x01 && buff[3] == 0xAA)
{
for(retry = 0; retry < 0xFFF; retry++)
{
r1 = _send_command(CMD55, 0, 0); /* should be return 0x01 */
if(r1 != 0x01)
{
return r1;
}
r1 = _send_command(ACMD41, 0x40000000, 0); /* should be return 0x00 */
if(r1 == 0x00)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 0xFFF)
{
gu8SDStatus = 3;
return 3;
}
/* Read OCR by CMD58 */
r1 = _send_command_hold(CMD58, 0, 0);
if(r1 != 0x00)
{
return r1; /* response error, return r1 */
}
buff[0] = _spi_read_write(DUMMY_BYTE);
buff[1] = _spi_read_write(DUMMY_BYTE);
buff[2] = _spi_read_write(DUMMY_BYTE);
buff[3] = _spi_read_write(DUMMY_BYTE);
/* End of CMD58, chip disable and dummy byte */
_card_disable();
_spi_read_write(DUMMY_BYTE);
/* OCR -> CCS(bit30) 1: SDV2HC 0: SDV2 */
if(buff[0] & 0x40)
{
CardInfo.CardType = CARDTYPE_SDV2HC;
}
else
{
CardInfo.CardType = CARDTYPE_SDV2;
}
/* Set spi speed high */
MSD_SPIHighSpeed(1);
}
}
return 0;
}
/*******************************************************************************
* Function Name : MSD_WriteMultipleBlock
* Description : None
* Input : - sector:
* - buffer:
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_WriteMultipleBlock(uint32_t sector, uc8 *buffer, uint8_t count)
{
uint8_t r1;
uint16_t i;
uint32_t retry;
/* if ver = SD2.0 HC, sector need <<9 */
if(CardInfo.CardType != CARDTYPE_SDV2HC)
{
sector = sector << 9;
}
if(CardInfo.CardType != CARDTYPE_MMC)
{
_send_command(ACMD23, count, 0);
}
/* Send CMD25 : Write multiple block command */
r1 = _send_command(CMD25, sector, 0);
if(r1 != 0x00)
{
return 1;
}
/* Card enable, Prepare to write */
_card_enable();
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* Start data write token: 0xFE */
//_spi_read_write(0xFE);
do
{
_spi_read_write(0xFC);
for(i = 0; i < MSD_BLOCKSIZE; i++)
{
_spi_read_write(*buffer++);
}
/* 2Bytes dummy CRC */
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* MSD card accept the data */
r1 = _spi_read_write(DUMMY_BYTE);
if((r1 & 0x1F) != 0x05)
{
_card_disable();
return 2;
}
/* Wait all the data programm finished */
retry = 0;
while(_spi_read_write(DUMMY_BYTE) == 0x00)
{
/* Timeout return */
if(retry++ == 0x40000)
{
_card_disable();
return 3;
}
}
}
while (--count);
r1 = _spi_read_write(0xFD);
if(r1 == 0x00)
{
return 4;
}
/* Wait all the data programm finished */
retry = 0;
while(_spi_read_write(DUMMY_BYTE) == 0x00)
{
/* Timeout return */
if(retry++ == 0x40000)
{
_card_disable();
return 5;
}
}
/* chip disable and dummy byte */
_card_disable();
_spi_read_write(DUMMY_BYTE);
return count;
}
/************************************************************************************
* Function Name : MSD_WriteMultipleBlock_DMA(uint32_t sector, uc8 *buffer，u16 NumByteToWrite)
* Description : None
* Input : - sector:
* - buffer:
* Output : None
* Return : None
* Attention : None
************************************************************************************/
int MSD_WriteMultipleBlock_DMA(uint32_t sector, uc8 *buffer, u8 NbrOfSector, u16 NumByteToWrite)
{
uint8 r1;
// uint16_t i=0;
uint32_t retry;
u8 value = 0;
// INT8U err;
u8 rvalue = MSD_RESPONSE_FAILURE;
DMA_InitTypeDef DMA_InitStructure; //定义DMA初始化结构体
/*begin:yangfei added 2012.11.29*/
// debug("MSD_WriteMultipleBlock_DMA\r\n");
_card_enable();
DMA_DeInit(DMA1_Channel5);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&SPI2->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_BufferSize = NumByteToWrite;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel5, &DMA_InitStructure);
/* Enable DMA1 Channel5 Transfer Complete interrupt */
DMA_ITConfig(DMA1_Channel5, DMA_IT_TC, ENABLE);
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Tx, ENABLE);
/*end:yangfei added 2012.11.29*/
//SPI_DMA_Send_Init(buffer,MSD_BLOCKSIZE);
/* if ver = SD2.0 HC, sector need <<9 */
if(CardInfo.CardType != CARDTYPE_SDV2HC)
{
sector = sector << 9;
}
if(CardInfo.CardType != CARDTYPE_MMC)
{
_send_command(ACMD23, NbrOfSector, 0);
}
/* Send CMD25 : Write multiple block command */
MSD_SendCmd(CMD25, sector, 0xff);
//_spi_read_write(DUMMY_BYTE);
//_spi_read_write(DUMMY_BYTE);
if (!MSD_GetResponse(MSD_RESPONSE_NO_ERROR))
{
_spi_read_write(DUMMY_BYTE);
/* Start data write token: 0xFE */
_spi_read_write(0xFC);
/*begin:yangfei added 2012.11.28*/
DMA_Cmd(DMA1_Channel5, ENABLE);
#ifdef DMA1_IRQ
OSFlagPend(Sem_SD_DMA, (OS_FLAGS)1, OS_FLAG_WAIT_SET_ALL, 0, &err); //请求信号量集的第0位置1
DMA_ClearFlag(DMA1_FLAG_TC5);
#else
while(!DMA_GetFlagStatus(DMA1_FLAG_TC5)) ;
DMA_ClearFlag(DMA1_FLAG_TC5);
#endif
/* 2Bytes dummy CRC */
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
value = MSD_GetDataResponse();
if (value == MSD_DATA_OK)
{
rvalue = MSD_RESPONSE_NO_ERROR;
}
// debug("value=%x\r\n",value);
}
/* Send end of transmit token: 0xFD */
r1 = _spi_read_write(0xFD);
if(r1 == 0x00)
{
return 4;
}
/*begin:yangfei added 2012.12.07 for wait programm finished else write error*/
/* Wait all the data programm finished */
retry = 0;
while(_spi_read_write(DUMMY_BYTE) == 0x00)
{
/* Timeout return */
if(retry++ == 0x40000)
{
_card_disable();
return 3;
}
}
/* chip disable and dummy byte */
_card_disable();
_spi_read_write(DUMMY_BYTE);
/*yangfei added*/
DMA_Cmd(DMA1_Channel5, DISABLE);
return rvalue;
}
/*******************************************************************************
* Function Name : MSD_WriteMultiBlock
* Description : None
* Input : - sector:
* - buffer:
* - NbrOfSector:
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_WriteMultiBlock(uint32_t sector, uc8 *buffer, uint32_t NbrOfSector)
{
uint8_t r1;
uint16_t i;
uint32_t n;
uint32_t retry;
/* if ver = SD2.0 HC, sector need <<9 */
if(CardInfo.CardType != CARDTYPE_SDV2HC)
{
sector = sector<<9;
}
/* Send command ACMD23 berfore multi write if is not a MMC card */
if(CardInfo.CardType != CARDTYPE_MMC)
{
_send_command(ACMD23, NbrOfSector, 0x00);
}
/* Send CMD25 : Write nulti block command */
r1 = _send_command(CMD25, sector, 0);
if(r1 != 0x00)
{
return 1;
}
/* Card enable, Prepare to write */
_CARD_ENABLE();
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
for(n=0; n<NbrOfSector; n++)
{
/* Start multi block write token: 0xFC */
_spi_read_write(0xFC);
for(i=0; i<MSD_BLOCKSIZE; i++)
{
_spi_read_write(*buffer++);
}
/* 2Bytes dummy CRC */
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* MSD card accept the data */
r1 = _spi_read_write(DUMMY_BYTE);
if((r1&0x1F) != 0x05)
{
_CARD_DISABLE();
return 2;
}
/* Wait all the data programm finished */
retry = 0;
while(_spi_read_write(DUMMY_BYTE) != 0xFF)
{
/* Timeout return */
if(retry++ == 0x40000)
{
_CARD_DISABLE();
return 3;
}
}
}
/* Send end of transmit token: 0xFD */
r1 = _spi_read_write(0xFD);
if(r1 == 0x00)
{
return 4;
}
/* Wait all the data programm finished */
retry = 0;
while(_spi_read_write(DUMMY_BYTE) != 0xFF)
{
/* Timeout return */
if(retry++ == 0x40000)
{
_CARD_DISABLE();
return 5;
}
}
/* chip disable and dummy byte */
_CARD_DISABLE();
_spi_read_write(DUMMY_BYTE);
return 0;
}
/*******************************************************************************
* Function Name : MSD_WriteSingleBlock
* Description : None
* Input : - sector:
* - buffer:
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_WriteSingleBlock(uint32_t sector, uc8 *buffer)
{
uint8_t r1;
uint16_t i;
uint32_t retry;
/* if ver = SD2.0 HC, sector need <<9 */
if(CardInfo.CardType != CARDTYPE_SDV2HC)
{
sector = sector<<9;
}
/* Send CMD24 : Write single block command */
r1 = _send_command(CMD24, sector, 0);
if(r1 != 0x00)
{
return 1;
}
/* Card enable, Prepare to write */
_CARD_ENABLE();
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* Start data write token: 0xFE */
_spi_read_write(0xFE);
/* Start single block write the data buffer */
for(i=0; i<MSD_BLOCKSIZE; i++)
{
_spi_read_write(*buffer++);
}
/* 2Bytes dummy CRC */
_spi_read_write(DUMMY_BYTE);
_spi_read_write(DUMMY_BYTE);
/* MSD card accept the data */
r1 = _spi_read_write(DUMMY_BYTE);
if((r1&0x1F) != 0x05)
{
_CARD_DISABLE();
return 2;
}
/* Wait all the data programm finished */
retry = 0;
while(_spi_read_write(DUMMY_BYTE) == 0x00)
{
/* Timeout return */
if(retry++ == 0x40000)
{
_CARD_DISABLE();
return 3;
}
}
/* chip disable and dummy byte */
_CARD_DISABLE();
_spi_read_write(DUMMY_BYTE);
return 0;
}
/*******************************************************************************
* Function Name : MSD_Init
* Description : SD Card initializtion
* Input : None
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int MSD_Init(void)
{
uint8_t r1;
uint8_t buff[6] = {0};
uint16_t retry;
/* Check , if no card insert */
if(_NO_CARD_INSERT())
{
//printf("There is no card detected! \r\n");
return -1;
}
/* Power on and delay some times */
for(retry=0; retry<0x100; retry++)
{
_CARD_POWER_ON();
}
/* Satrt send 74 clocks at least */
for(retry=0; retry<10; retry++)
{
_spi_read_write(DUMMY_BYTE);
}
/* Start send CMD0 till return 0x01 means in IDLE state */
for(retry=0; retry<0xFFF; retry++)
{
r1 = _send_command(CMD0, 0, 0x95);
if(r1 == 0x01)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 0xFFF)
{
//printf("Reset card into IDLE state failed!\r\n");
return 1;
}
/* Get the card type, version */
r1 = _send_command_hold(CMD8, 0x1AA, 0x87);
/* r1=0x05 -> V1.0 */
if(r1 == 0x05)
{
CardInfo.CardType = CARDTYPE_SDV1;
/* End of CMD8, chip disable and dummy byte */
_CARD_DISABLE();
_spi_read_write(DUMMY_BYTE);
/* SD1.0/MMC start initialize */
/* Send CMD55+ACMD41, No-response is a MMC card, otherwise is a SD1.0 card */
for(retry=0; retry<0xFFF; retry++)
{
r1 = _send_command(CMD55, 0, 0); /* should be return 0x01 */
if(r1 != 0x01)
{
//printf("Send CMD55 should return 0x01, response=0x%02x\r\n", r1);
return r1;
}
r1 = _send_command(ACMD41, 0, 0); /* should be return 0x00 */
if(r1 == 0x00)
{
retry = 0;
break;
}
}
/* MMC card initialize start */
if(retry == 0xFFF)
{
for(retry=0; retry<0xFFF; retry++)
{
r1 = _send_command(CMD1, 0, 0); /* should be return 0x00 */
if(r1 == 0x00)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 0xFFF)
{
//printf("Send CMD1 should return 0x00, response=0x%02x\r\n", r1);
return 2;
}
CardInfo.CardType = CARDTYPE_MMC;
//printf("Card Type: MMC\r\n");
}
/* SD1.0 card detected, print information */
else
{
//printf("Card Type: SD V1\r\n");
}
/* Set spi speed high */
MSD_SPIHighSpeed(1);
/* CRC disable */
r1 = _send_command(CMD59, 0, 0x01);
if(r1 != 0x00)
{
//printf("Send CMD59 should return 0x00, response=0x%02x\r\n", r1);
return r1; /* response error, return r1 */
}
/* Set the block size */
r1 = _send_command(CMD16, MSD_BLOCKSIZE, 0xFF);
if(r1 != 0x00)
{
//printf("Send CMD16 should return 0x00, response=0x%02x\r\n", r1);
return r1; /* response error, return r1 */
}
}
/* r1=0x01 -> V2.x, read OCR register, check version */
else if(r1 == 0x01)
{
/* 4Bytes returned after CMD8 sent */
buff[0] = _spi_read_write(DUMMY_BYTE); /* should be 0x00 */
buff[1] = _spi_read_write(DUMMY_BYTE); /* should be 0x00 */
buff[2] = _spi_read_write(DUMMY_BYTE); /* should be 0x01 */
buff[3] = _spi_read_write(DUMMY_BYTE); /* should be 0xAA */
/* End of CMD8, chip disable and dummy byte */
_CARD_DISABLE();
_spi_read_write(DUMMY_BYTE);
/* Check voltage range be 2.7-3.6V */
if(buff[2]==0x01 && buff[3]==0xAA)
{
for(retry=0; retry<0xFFF; retry++)
{
r1 = _send_command(CMD55, 0, 0); /* should be return 0x01 */
if(r1!=0x01)
{
//printf("Send CMD55 should return 0x01, response=0x%02x\r\n", r1);
return r1;
}
r1 = _send_command(ACMD41, 0x40000000, 0); /* should be return 0x00 */
if(r1 == 0x00)
{
retry = 0;
break;
}
}
/* Timeout return */
if(retry == 0xFFF)
{
//printf("Send ACMD41 should return 0x00, response=0x%02x\r\n", r1);
return 3;
}
/* Read OCR by CMD58 */
r1 = _send_command_hold(CMD58, 0, 0);
if(r1!=0x00)
{
//printf("Send CMD58 should return 0x00, response=0x%02x\r\n", r1);
return r1; /* response error, return r1 */
}
buff[0] = _spi_read_write(DUMMY_BYTE);
buff[1] = _spi_read_write(DUMMY_BYTE);
buff[2] = _spi_read_write(DUMMY_BYTE);
buff[3] = _spi_read_write(DUMMY_BYTE);
/* End of CMD58, chip disable and dummy byte */
_CARD_DISABLE();
_spi_read_write(DUMMY_BYTE);
/* OCR -> CCS(bit30) 1: SDV2HC 0: SDV2 */
if(buff[0] & 0x40)
{
CardInfo.CardType = CARDTYPE_SDV2HC;
//printf("Card Type: SD V2HC\r\n");
}
else
{
CardInfo.CardType = CARDTYPE_SDV2;
//printf("Card Type: SD V2\r\n");
}
/* Set spi speed high */
MSD_SPIHighSpeed(1);
}
}
return 0;
}
