Skip to content

R
rt-thread

wwsmg1 / rt-thread
与 Fork 源项目一致

Fork自 RT-Thread / rt-thread

通知 1
Star 1
Fork 0
R
rt-thread

体验新版 GitCode，发现更多精彩内容 >>

提交 a5119d69 编写于 作者: B Bernard Xiong
浏览文件
操作

[BSP] Add RT_DEVICE_CTRL_BLK_GETGEOME command handling in device control of LPC176x bsp

上级 7f45ac18
隐藏空白更改
内联 并排
Showing with 450 addition and 378 deletion
bsp/lpc176x/drivers/sd.c
浏览文件 @ a5119d69
......@@ -5,12 +5,12 @@
#include "sd.h"
/* 512 bytes for each sector */
#define SD_SECTOR_SIZE 512
#define SD_SECTOR_SIZE 512
/* token for write operation */
#define TOKEN_SINGLE_BLOCK 0xFE
#define TOKEN_MULTI_BLOCK 0xFC
#define TOKEN_STOP_TRAN 0xFD
#define TOKEN_SINGLE_BLOCK 0xFE
#define TOKEN_MULTI_BLOCK 0xFC
#define TOKEN_STOP_TRAN 0xFD
/* Local variables */
static uint8_t CardType;
......@@ -19,440 +19,511 @@ static struct rt_device sdcard_device;
static struct dfs_partition part;
/* Local Function Prototypes */
static bool LPC17xx_SD_Init (void);
static uint8_t LPC17xx_SD_SendCmd (uint8_t cmd, uint32_t arg);
static bool LPC17xx_SD_ReadSector (uint32_t sector, uint8_t *buff, uint32_t count);
static bool LPC17xx_SD_ReadDataBlock ( uint8_t *buff, uint32_t cnt);
static bool LPC17xx_SD_WriteSector (uint32_t sector, const uint8_t *buff, uint32_t count);
static bool LPC17xx_SD_WirteDataBlock (const uint8_t *buff, uint8_t token);
static bool LPC17xx_SD_ReadCfg (SDCFG *cfg);
static bool LPC17xx_SD_WaitForReady (void);
static bool LPC17xx_SD_Init(void);
static uint8_t LPC17xx_SD_SendCmd(uint8_t cmd, uint32_t arg);
static bool LPC17xx_SD_ReadSector(uint32_t sector, uint8_t *buff, uint32_t count);
static bool LPC17xx_SD_ReadDataBlock(uint8_t *buff, uint32_t cnt);
static bool LPC17xx_SD_WriteSector(uint32_t sector, const uint8_t *buff, uint32_t count);
static bool LPC17xx_SD_WirteDataBlock(const uint8_t *buff, uint8_t token);
static bool LPC17xx_SD_ReadCfg(SDCFG *cfg);
static bool LPC17xx_SD_WaitForReady(void);
/* wait until the card is not busy */
static bool LPC17xx_SD_WaitForReady (void)
static bool LPC17xx_SD_WaitForReady(void)
{
uint8_t res;
/* timeout should be large enough to make sure the write operaion can be completed. */
uint32_t timeout = 400000;
LPC17xx_SPI_SendByte(0xFF);
do {
res = LPC17xx_SPI_RecvByte();
} while ((res != 0xFF) && timeout--);
return (res == 0xFF ? true : false);
uint8_t res;
/* timeout should be large enough to make sure the write operaion can be completed. */
uint32_t timeout = 400000;
LPC17xx_SPI_SendByte(0xFF);
do
{
res = LPC17xx_SPI_RecvByte();
}
while ((res != 0xFF) && timeout--);
return (res == 0xFF ? true : false);
}
/* Initialize SD/MMC card. */
static bool LPC17xx_SD_Init (void)
static bool LPC17xx_SD_Init(void)
{
uint32_t i, timeout;
uint8_t cmd, ct, ocr[4];
bool ret = false;
/* Initialize SPI interface and enable Flash Card SPI mode. */
LPC17xx_SPI_Init ();
/* At least 74 clock cycles are required prior to starting bus communication */
for (i = 0; i < 80; i++) { /* 80 dummy clocks */
LPC17xx_SPI_SendByte (0xFF);
}
ct = CT_NONE;
if (LPC17xx_SD_SendCmd (GO_IDLE_STATE, 0) == 0x1)
{
timeout = 50000;
if (LPC17xx_SD_SendCmd(CMD8, 0x1AA) == 1) { /* SDHC */
/* Get trailing return value of R7 resp */
for (i = 0; i < 4; i++) ocr[i] = LPC17xx_SPI_RecvByte();
if (ocr[2] == 0x01 && ocr[3] == 0xAA) { /* The card can work at vdd range of 2.7-3.6V */
/* Wait for leaving idle state (ACMD41 with HCS bit) */
while (timeout-- && LPC17xx_SD_SendCmd(SD_SEND_OP_COND, 1UL << 30));
/* Check CCS bit in the OCR */
if (timeout && LPC17xx_SD_SendCmd(READ_OCR, 0) == 0) {
for (i = 0; i < 4; i++) ocr[i] = LPC17xx_SPI_RecvByte();
ct = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2;
}
} else { /* SDSC or MMC */
if (LPC17xx_SD_SendCmd(SD_SEND_OP_COND, 0) <= 1) {
ct = CT_SD1; cmd = SD_SEND_OP_COND; /* SDSC */
} else {
ct = CT_MMC; cmd = SEND_OP_COND; /* MMC */
}
/* Wait for leaving idle state */
while (timeout-- && LPC17xx_SD_SendCmd(cmd, 0));
/* Set R/W block length to 512 */
if (!timeout || LPC17xx_SD_SendCmd(SET_BLOCKLEN, SD_SECTOR_SIZE) != 0)
ct = CT_NONE;
}
}
else { /* SDSC or MMC */
if (LPC17xx_SD_SendCmd(SD_SEND_OP_COND, 0) <= 1) {
ct = CT_SD1; cmd = SD_SEND_OP_COND; /* SDSC */
} else {
ct = CT_MMC; cmd = SEND_OP_COND; /* MMC */
}
/* Wait for leaving idle state */
while (timeout-- && LPC17xx_SD_SendCmd(cmd, 0));
/* Set R/W block length to 512 */
if (!timeout || LPC17xx_SD_SendCmd(SET_BLOCKLEN, SD_SECTOR_SIZE) != 0)
ct = CT_NONE;
}
}
CardType = ct;
LPC17xx_SPI_Release();
if (ct) { /* Initialization succeeded */
ret = true;
if ( ct == CT_MMC ) {
LPC17xx_SPI_SetSpeed(SPI_SPEED_20MHz);
} else {
LPC17xx_SPI_SetSpeed(SPI_SPEED_20MHz);
}
} else { /* Initialization failed */
LPC17xx_SPI_Select ();
LPC17xx_SD_WaitForReady ();
LPC17xx_SPI_DeInit();
}
return ret;
uint32_t i, timeout;
uint8_t cmd, ct, ocr[4];
bool ret = false;
/* Initialize SPI interface and enable Flash Card SPI mode. */
LPC17xx_SPI_Init();
/* At least 74 clock cycles are required prior to starting bus communication */
for (i = 0; i < 80; i++) /* 80 dummy clocks */
{
LPC17xx_SPI_SendByte(0xFF);
}
ct = CT_NONE;
if (LPC17xx_SD_SendCmd(GO_IDLE_STATE, 0) == 0x1)
{
timeout = 50000;
if (LPC17xx_SD_SendCmd(CMD8, 0x1AA) == 1) /* SDHC */
{
/* Get trailing return value of R7 resp */
for (i = 0; i < 4; i++) ocr[i] = LPC17xx_SPI_RecvByte();
if (ocr[2] == 0x01 && ocr[3] == 0xAA) /* The card can work at vdd range of 2.7-3.6V */
{
/* Wait for leaving idle state (ACMD41 with HCS bit) */
while (timeout-- && LPC17xx_SD_SendCmd(SD_SEND_OP_COND, 1UL << 30));
/* Check CCS bit in the OCR */
if (timeout && LPC17xx_SD_SendCmd(READ_OCR, 0) == 0)
{
for (i = 0; i < 4; i++) ocr[i] = LPC17xx_SPI_RecvByte();
ct = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2;
}
}
else /* SDSC or MMC */
{
if (LPC17xx_SD_SendCmd(SD_SEND_OP_COND, 0) <= 1)
{
ct = CT_SD1;
cmd = SD_SEND_OP_COND; /* SDSC */
}
else
{
ct = CT_MMC;
cmd = SEND_OP_COND; /* MMC */
}
/* Wait for leaving idle state */
while (timeout-- && LPC17xx_SD_SendCmd(cmd, 0));
/* Set R/W block length to 512 */
if (!timeout || LPC17xx_SD_SendCmd(SET_BLOCKLEN, SD_SECTOR_SIZE) != 0)
ct = CT_NONE;
}
}
else /* SDSC or MMC */
{
if (LPC17xx_SD_SendCmd(SD_SEND_OP_COND, 0) <= 1)
{
ct = CT_SD1;
cmd = SD_SEND_OP_COND; /* SDSC */
}
else
{
ct = CT_MMC;
cmd = SEND_OP_COND; /* MMC */
}
/* Wait for leaving idle state */
while (timeout-- && LPC17xx_SD_SendCmd(cmd, 0));
/* Set R/W block length to 512 */
if (!timeout || LPC17xx_SD_SendCmd(SET_BLOCKLEN, SD_SECTOR_SIZE) != 0)
ct = CT_NONE;
}
}
CardType = ct;
LPC17xx_SPI_Release();
if (ct) /* Initialization succeeded */
{
ret = true;
if (ct == CT_MMC)
{
LPC17xx_SPI_SetSpeed(SPI_SPEED_20MHz);
}
else
{
LPC17xx_SPI_SetSpeed(SPI_SPEED_20MHz);
}
}
else /* Initialization failed */
{
LPC17xx_SPI_Select();
LPC17xx_SD_WaitForReady();
LPC17xx_SPI_DeInit();
}
return ret;
}
/*****************************************************************************
Send a Command to Flash card and get a Response
cmd: cmd index
arg: argument for the cmd
return the received response of the commond
Send a Command to Flash card and get a Response
cmd: cmd index
arg: argument for the cmd
return the received response of the commond
*****************************************************************************/
static uint8_t LPC17xx_SD_SendCmd (uint8_t cmd, uint32_t arg)
static uint8_t LPC17xx_SD_SendCmd(uint8_t cmd, uint32_t arg)
{
uint32_t r1, n;
if (cmd & 0x80) { /* ACMD<n> is the command sequence of CMD55-CMD<n> */
cmd &= 0x7F;
r1 = LPC17xx_SD_SendCmd(APP_CMD, 0); /* CMD55 */
if (r1 > 1) return r1; /* cmd send failed */
}
/* Select the card and wait for ready */
LPC17xx_SPI_DeSelect();
LPC17xx_SPI_Select();
if (LPC17xx_SD_WaitForReady() == false ) return 0xFF;
LPC17xx_SPI_SendByte (0xFF); /* prepare 8 clocks */
LPC17xx_SPI_SendByte (cmd);
LPC17xx_SPI_SendByte (arg >> 24);
LPC17xx_SPI_SendByte (arg >> 16);
LPC17xx_SPI_SendByte (arg >> 8);
LPC17xx_SPI_SendByte (arg);
/* Checksum, should only be valid for the first command.CMD0 */
n = 0x01; /* Dummy CRC + Stop */
if (cmd == GO_IDLE_STATE) n = 0x95; /* Valid CRC for CMD0(0) */
if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */
LPC17xx_SPI_SendByte(n);
if (cmd == STOP_TRAN) LPC17xx_SPI_RecvByte (); /* Skip a stuff byte when stop reading */
n = 10; /* Wait for a valid response in timeout of 10 attempts */
do {
r1 = LPC17xx_SPI_RecvByte ();
} while ((r1 & 0x80) && --n);
return (r1); /* Return with the response value */
uint32_t r1, n;
if (cmd & 0x80) /* ACMD<n> is the command sequence of CMD55-CMD<n> */
{
cmd &= 0x7F;
r1 = LPC17xx_SD_SendCmd(APP_CMD, 0); /* CMD55 */
if (r1 > 1) return r1; /* cmd send failed */
}
/* Select the card and wait for ready */
LPC17xx_SPI_DeSelect();
LPC17xx_SPI_Select();
if (LPC17xx_SD_WaitForReady() == false) return 0xFF;
LPC17xx_SPI_SendByte(0xFF); /* prepare 8 clocks */
LPC17xx_SPI_SendByte(cmd);
LPC17xx_SPI_SendByte(arg >> 24);
LPC17xx_SPI_SendByte(arg >> 16);
LPC17xx_SPI_SendByte(arg >> 8);
LPC17xx_SPI_SendByte(arg);
/* Checksum, should only be valid for the first command.CMD0 */
n = 0x01; /* Dummy CRC + Stop */
if (cmd == GO_IDLE_STATE) n = 0x95; /* Valid CRC for CMD0(0) */
if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */
LPC17xx_SPI_SendByte(n);
if (cmd == STOP_TRAN) LPC17xx_SPI_RecvByte(); /* Skip a stuff byte when stop reading */
n = 10; /* Wait for a valid response in timeout of 10 attempts */
do
{
r1 = LPC17xx_SPI_RecvByte();
}
while ((r1 & 0x80) && --n);
return (r1); /* Return with the response value */
}
/*****************************************************************************
Read "count" Sector(s) starting from sector index "sector",
buff <- [sector, sector+1, ... sector+count-1]
if success, return true, otherwise return false
Read "count" Sector(s) starting from sector index "sector",
buff <- [sector, sector+1, ... sector+count-1]
if success, return true, otherwise return false
*****************************************************************************/
static bool LPC17xx_SD_ReadSector (uint32_t sector, uint8_t *buff, uint32_t count)
static bool LPC17xx_SD_ReadSector(uint32_t sector, uint8_t *buff, uint32_t count)
{
/* Convert to byte address if needed */
if (!(CardType & CT_BLOCK)) sector *= SD_SECTOR_SIZE;
if (count == 1) { /* Single block read */
if ((LPC17xx_SD_SendCmd(READ_BLOCK, sector) == 0)
&& LPC17xx_SD_ReadDataBlock(buff, SD_SECTOR_SIZE))
count = 0;
} else { /* Multiple block read */
if (LPC17xx_SD_SendCmd(READ_MULT_BLOCK, sector) == 0) {
do {
if (!LPC17xx_SD_ReadDataBlock(buff, SD_SECTOR_SIZE)) break;
buff += SD_SECTOR_SIZE;
} while (--count);
LPC17xx_SD_SendCmd(STOP_TRAN, 0); /* STOP_TRANSMISSION */
}
}
LPC17xx_SPI_Release();
return count ? false : true;
/* Convert to byte address if needed */
if (!(CardType & CT_BLOCK)) sector *= SD_SECTOR_SIZE;
if (count == 1) /* Single block read */
{
if ((LPC17xx_SD_SendCmd(READ_BLOCK, sector) == 0)
&& LPC17xx_SD_ReadDataBlock(buff, SD_SECTOR_SIZE))
count = 0;
}
else /* Multiple block read */
{
if (LPC17xx_SD_SendCmd(READ_MULT_BLOCK, sector) == 0)
{
do
{
if (!LPC17xx_SD_ReadDataBlock(buff, SD_SECTOR_SIZE)) break;
buff += SD_SECTOR_SIZE;
}
while (--count);
LPC17xx_SD_SendCmd(STOP_TRAN, 0); /* STOP_TRANSMISSION */
}
}
LPC17xx_SPI_Release();
return count ? false : true;
}
/*****************************************************************************
read specified number of data to specified buffer.
buff: Data buffer to store received data
cnt: Byte count (must be multiple of 4, normally 512)
read specified number of data to specified buffer.
buff: Data buffer to store received data
cnt: Byte count (must be multiple of 4, normally 512)
*****************************************************************************/
static bool LPC17xx_SD_ReadDataBlock ( uint8_t *buff, uint32_t cnt)
static bool LPC17xx_SD_ReadDataBlock(uint8_t *buff, uint32_t cnt)
{
uint8_t token;
uint32_t timeout;
uint8_t token;
uint32_t timeout;
timeout = 20000;
do { /* Wait for data packet in timeout of 100ms */
token = LPC17xx_SPI_RecvByte();
} while ((token == 0xFF) && timeout--);
if(token != 0xFE) return false; /* If not valid data token, return with error */
timeout = 20000;
do /* Wait for data packet in timeout of 100ms */
{
token = LPC17xx_SPI_RecvByte();
}
while ((token == 0xFF) && timeout--);
if (token != 0xFE) return false; /* If not valid data token, return with error */
#if USE_FIFO
LPC17xx_SPI_RecvBlock_FIFO (buff, cnt);
LPC17xx_SPI_RecvBlock_FIFO(buff, cnt);
#else
do { /* Receive the data block into buffer */
*buff++ = LPC17xx_SPI_RecvByte ();
*buff++ = LPC17xx_SPI_RecvByte ();
*buff++ = LPC17xx_SPI_RecvByte ();
*buff++ = LPC17xx_SPI_RecvByte ();
} while (cnt -= 4);
do /* Receive the data block into buffer */
{
*buff++ = LPC17xx_SPI_RecvByte();
*buff++ = LPC17xx_SPI_RecvByte();
*buff++ = LPC17xx_SPI_RecvByte();
*buff++ = LPC17xx_SPI_RecvByte();
}
while (cnt -= 4);
#endif /* USE_FIFO */
LPC17xx_SPI_RecvByte (); /* Discard CRC */
LPC17xx_SPI_RecvByte ();
LPC17xx_SPI_RecvByte(); /* Discard CRC */
LPC17xx_SPI_RecvByte();
return true; /* Return with success */
return true; /* Return with success */
}
/*****************************************************************************
Write "count" Sector(s) starting from sector index "sector",
buff -> [sector, sector+1, ... sector+count-1]
if success, return true, otherwise return false
Write "count" Sector(s) starting from sector index "sector",
buff -> [sector, sector+1, ... sector+count-1]
if success, return true, otherwise return false
*****************************************************************************/
static bool LPC17xx_SD_WriteSector (uint32_t sector, const uint8_t *buff, uint32_t count)
static bool LPC17xx_SD_WriteSector(uint32_t sector, const uint8_t *buff, uint32_t count)
{
if (!(CardType & CT_BLOCK)) sector *= 512; /* Convert to byte address if needed */
if (count == 1) { /* Single block write */
if ((LPC17xx_SD_SendCmd(WRITE_BLOCK, sector) == 0)
&& LPC17xx_SD_WirteDataBlock(buff, TOKEN_SINGLE_BLOCK))
count = 0;
} else { /* Multiple block write */
if (CardType & CT_SDC) LPC17xx_SD_SendCmd(SET_WR_BLK_ERASE_COUNT, count);
if (LPC17xx_SD_SendCmd(WRITE_MULT_BLOCK, sector) == 0) {
do {
if (!LPC17xx_SD_WirteDataBlock(buff, TOKEN_MULTI_BLOCK)) break;
buff += 512;
} while (--count);
#if 1
if (!LPC17xx_SD_WirteDataBlock(0, TOKEN_STOP_TRAN)) /* STOP_TRAN token */
count = 1;
#else
LPC17xx_SPI_SendByte(TOKEN_STOP_TRAN);
#endif
}
}
LPC17xx_SPI_Release();
return count ? false : true;
if (!(CardType & CT_BLOCK)) sector *= 512; /* Convert to byte address if needed */
if (count == 1) /* Single block write */
{
if ((LPC17xx_SD_SendCmd(WRITE_BLOCK, sector) == 0)
&& LPC17xx_SD_WirteDataBlock(buff, TOKEN_SINGLE_BLOCK))
count = 0;
}
else /* Multiple block write */
{
if (CardType & CT_SDC) LPC17xx_SD_SendCmd(SET_WR_BLK_ERASE_COUNT, count);
if (LPC17xx_SD_SendCmd(WRITE_MULT_BLOCK, sector) == 0)
{
do
{
if (!LPC17xx_SD_WirteDataBlock(buff, TOKEN_MULTI_BLOCK)) break;
buff += 512;
}
while (--count);
#if 1
if (!LPC17xx_SD_WirteDataBlock(0, TOKEN_STOP_TRAN)) /* STOP_TRAN token */
count = 1;
#else
LPC17xx_SPI_SendByte(TOKEN_STOP_TRAN);
#endif
}
}
LPC17xx_SPI_Release();
return count ? false : true;
}
/*****************************************************************************
Write 512 bytes
buffer: 512 byte data block to be transmitted
token: 0xFE -> single block
0xFC -> multi block
0xFD -> Stop
Write 512 bytes
buffer: 512 byte data block to be transmitted
token: 0xFE -> single block
0xFC -> multi block
0xFD -> Stop
*****************************************************************************/
static bool LPC17xx_SD_WirteDataBlock (const uint8_t *buff, uint8_t token)
static bool LPC17xx_SD_WirteDataBlock(const uint8_t *buff, uint8_t token)
{
uint8_t resp, i;
uint8_t resp, i;
i = i; // avoid warning
i = i; // avoid warning
LPC17xx_SPI_SendByte (token); /* send data token first*/
LPC17xx_SPI_SendByte(token); /* send data token first*/
if (token != TOKEN_STOP_TRAN) {
if (token != TOKEN_STOP_TRAN)
{
#if USE_FIFO
LPC17xx_SPI_SendBlock_FIFO (buff);
LPC17xx_SPI_SendBlock_FIFO(buff);
#else
/* Send data. */
for (i = 512/4; i ; i--) {
LPC17xx_SPI_SendByte (*buff++);
LPC17xx_SPI_SendByte (*buff++);
LPC17xx_SPI_SendByte (*buff++);
LPC17xx_SPI_SendByte (*buff++);
}
/* Send data. */
for (i = 512 / 4; i ; i--)
{
LPC17xx_SPI_SendByte(*buff++);
LPC17xx_SPI_SendByte(*buff++);
LPC17xx_SPI_SendByte(*buff++);
LPC17xx_SPI_SendByte(*buff++);
}
#endif /* USE_FIFO */
LPC17xx_SPI_SendByte(0xFF); /* 16-bit CRC (Dummy) */
LPC17xx_SPI_SendByte(0xFF);
LPC17xx_SPI_SendByte(0xFF); /* 16-bit CRC (Dummy) */
LPC17xx_SPI_SendByte(0xFF);
resp = LPC17xx_SPI_RecvByte(); /* Receive data response */
if ((resp & 0x1F) != 0x05) /* If not accepted, return with error */
return false;
resp = LPC17xx_SPI_RecvByte(); /* Receive data response */
if ((resp & 0x1F) != 0x05) /* If not accepted, return with error */
return false;
if ( LPC17xx_SD_WaitForReady() == false) /* Wait while Flash Card is busy. */
return false;
}
if (LPC17xx_SD_WaitForReady() == false) /* Wait while Flash Card is busy. */
return false;
}
return true;
return true;
}
/* Read MMC/SD Card device configuration. */
static bool LPC17xx_SD_ReadCfg (SDCFG *cfg)
static bool LPC17xx_SD_ReadCfg(SDCFG *cfg)
{
uint8_t i;
uint16_t csize;
uint8_t n, csd[16];
bool retv = false;
uint8_t i;
uint16_t csize;
uint8_t n, csd[16];
bool retv = false;
/* Read the OCR - Operations Condition Register. */
if (LPC17xx_SD_SendCmd (READ_OCR, 0) != 0x00) goto x;
for (i = 0; i < 4; i++) cfg->ocr[i] = LPC17xx_SPI_RecvByte ();
/* Read the OCR - Operations Condition Register. */
if (LPC17xx_SD_SendCmd(READ_OCR, 0) != 0x00) goto x;
for (i = 0; i < 4; i++) cfg->ocr[i] = LPC17xx_SPI_RecvByte();
/* Read the CID - Card Identification. */
if ((LPC17xx_SD_SendCmd (SEND_CID, 0) != 0x00) ||
(LPC17xx_SD_ReadDataBlock (cfg->cid, 16) == false))
goto x;
/* Read the CID - Card Identification. */
if ((LPC17xx_SD_SendCmd(SEND_CID, 0) != 0x00) ||
(LPC17xx_SD_ReadDataBlock(cfg->cid, 16) == false))
goto x;
/* Read the CSD - Card Specific Data. */
if ((LPC17xx_SD_SendCmd (SEND_CSD, 0) != 0x00) ||
(LPC17xx_SD_ReadDataBlock (cfg->csd, 16) == false))
goto x;
cfg -> sectorsize = SD_SECTOR_SIZE;
/* Get number of sectors on the disk (DWORD) */
if ((cfg->csd[0] >> 6) == 1) { /* SDC ver 2.00 */
csize = cfg->csd[9] + ((uint16_t)cfg->csd[8] << 8) + 1;
cfg -> sectorcnt = (uint32_t)csize << 10;
} else { /* SDC ver 1.XX or MMC*/
n = (cfg->csd[5] & 15) + ((cfg->csd[10] & 128) >> 7) + ((cfg->csd[9] & 3) << 1) + 2; // 19
csize = (cfg->csd[8] >> 6) + ((uint16_t)cfg->csd[7] << 2) + ((uint16_t)(cfg->csd[6] & 3) << 10) + 1; // 3752
cfg -> sectorcnt = (uint32_t)csize << (n - 9); // 3842048
}
cfg->size = cfg -> sectorcnt * cfg -> sectorsize; // 512*3842048=1967128576Byte (1.83GB)
/* Get erase block size in unit of sector (DWORD) */
if (CardType & CT_SD2) { /* SDC ver 2.00 */
if (LPC17xx_SD_SendCmd(SD_STATUS /*ACMD13*/, 0) == 0) { /* Read SD status */
LPC17xx_SPI_RecvByte();
if (LPC17xx_SD_ReadDataBlock(csd, 16)) { /* Read partial block */
for (n = 64 - 16; n; n--) LPC17xx_SPI_RecvByte(); /* Purge trailing data */
cfg->blocksize = 16UL << (csd[10] >> 4);
retv = true;
}
}
} else { /* SDC ver 1.XX or MMC */
if ((LPC17xx_SD_SendCmd(SEND_CSD, 0) == 0) && LPC17xx_SD_ReadDataBlock(csd, 16)) { /* Read CSD */
if (CardType & CT_SD1) { /* SDC ver 1.XX */
cfg->blocksize = (((csd[10] & 63) << 1) + ((uint16_t)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
} else { /* MMC */
// cfg->blocksize = ((uint16_t)((buf[10] & 124) >> 2) + 1) * (((buf[11] & 3) << 3) + ((buf[11] & 224) >> 5) + 1);
cfg->blocksize = ((uint16_t)((cfg->csd[10] & 124) >> 2) + 1) * (((cfg->csd[10] & 3) << 3) + ((cfg->csd[11] & 224) >> 5) + 1);
}
retv = true;
}
}
x: LPC17xx_SPI_Release();
if ((LPC17xx_SD_SendCmd(SEND_CSD, 0) != 0x00) ||
(LPC17xx_SD_ReadDataBlock(cfg->csd, 16) == false))
goto x;
cfg -> sectorsize = SD_SECTOR_SIZE;
/* Get number of sectors on the disk (DWORD) */
if ((cfg->csd[0] >> 6) == 1) /* SDC ver 2.00 */
{
csize = cfg->csd[9] + ((uint16_t)cfg->csd[8] << 8) + 1;
cfg -> sectorcnt = (uint32_t)csize << 10;
}
else /* SDC ver 1.XX or MMC*/
{
n = (cfg->csd[5] & 15) + ((cfg->csd[10] & 128) >> 7) + ((cfg->csd[9] & 3) << 1) + 2; // 19
csize = (cfg->csd[8] >> 6) + ((uint16_t)cfg->csd[7] << 2) + ((uint16_t)(cfg->csd[6] & 3) << 10) + 1; // 3752
cfg -> sectorcnt = (uint32_t)csize << (n - 9); // 3842048
}
cfg->size = cfg -> sectorcnt * cfg -> sectorsize; // 512*3842048=1967128576Byte (1.83GB)
/* Get erase block size in unit of sector (DWORD) */
if (CardType & CT_SD2) /* SDC ver 2.00 */
{
if (LPC17xx_SD_SendCmd(SD_STATUS /*ACMD13*/, 0) == 0) /* Read SD status */
{
LPC17xx_SPI_RecvByte();
if (LPC17xx_SD_ReadDataBlock(csd, 16)) /* Read partial block */
{
for (n = 64 - 16; n; n--) LPC17xx_SPI_RecvByte(); /* Purge trailing data */
cfg->blocksize = 16UL << (csd[10] >> 4);
retv = true;
}
}
}
else /* SDC ver 1.XX or MMC */
{
if ((LPC17xx_SD_SendCmd(SEND_CSD, 0) == 0) && LPC17xx_SD_ReadDataBlock(csd, 16)) /* Read CSD */
{
if (CardType & CT_SD1) /* SDC ver 1.XX */
{
cfg->blocksize = (((csd[10] & 63) << 1) + ((uint16_t)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
}
else /* MMC */
{
// cfg->blocksize = ((uint16_t)((buf[10] & 124) >> 2) + 1) * (((buf[11] & 3) << 3) + ((buf[11] & 224) >> 5) + 1);
cfg->blocksize = ((uint16_t)((cfg->csd[10] & 124) >> 2) + 1) * (((cfg->csd[10] & 3) << 3) + ((cfg->csd[11] & 224) >> 5) + 1);
}
retv = true;
}
}
x:
LPC17xx_SPI_Release();
return (retv);
}
static rt_err_t rt_sdcard_init(rt_device_t dev)
{
return RT_EOK;
return RT_EOK;
}
static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
return RT_EOK;
}
static rt_err_t rt_sdcard_close(rt_device_t dev)
{
return RT_EOK;
return RT_EOK;
}
static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
bool status;
bool status;
status = LPC17xx_SD_ReadSector(part.offset + pos, buffer, size);
status = LPC17xx_SD_ReadSector(part.offset + pos, buffer, size);
if (status == true) return size;
if (status == true) return size;
rt_kprintf("read failed: %d, pos 0x%08x, size %d\n", status, pos, size);
return 0;
rt_kprintf("read failed: %d, pos 0x%08x, size %d\n", status, pos, size);
return 0;
}
static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
static rt_size_t rt_sdcard_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
bool status;
bool status;
status = LPC17xx_SD_WriteSector(part.offset + pos, buffer, size);
status = LPC17xx_SD_WriteSector(part.offset + pos, buffer, size);
if (status == true) return size;
if (status == true) return size;
rt_kprintf("write failed: %d, pos 0x%08x, size %d\n", status, pos, size);
return 0;
rt_kprintf("write failed: %d, pos 0x%08x, size %d\n", status, pos, size);
return 0;
}
static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
return RT_EOK;
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
{
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL) return -RT_ERROR;
geometry->bytes_per_sector = SDCfg.sectorsize;
geometry->block_size = SDCfg.blocksize;
geometry->sector_count = SDCfg.sectorcnt;
}
return RT_EOK;
}
void rt_hw_sdcard_init()
{
if (LPC17xx_SD_Init() && LPC17xx_SD_ReadCfg(&SDCfg))
{
bool status;
rt_uint8_t *sector;
/* get the first sector to read partition table */
sector = (rt_uint8_t*) rt_malloc (512);
if (sector == RT_NULL)
{
rt_kprintf("allocate partition sector buffer failed\n");
return;
}
status = LPC17xx_SD_ReadSector(0, sector, 1);
if (status == true)
{
/* get the first partition */
if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
{
bool status;
rt_uint8_t *sector;
/* get the first sector to read partition table */
sector = (rt_uint8_t *) rt_malloc(512);
if (sector == RT_NULL)
{
rt_kprintf("allocate partition sector buffer failed\n");
return;
}
status = LPC17xx_SD_ReadSector(0, sector, 1);
if (status == true)
{
/* get the first partition */
if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
{
/* there is no partition */
part.offset = 0;
part.size = 0;
}
}
else
{
/* there is no partition table */
part.offset = 0;
part.size = 0;
}
/* release sector buffer */
rt_free(sector);
/* register sdcard device */
sdcard_device.type = RT_Device_Class_Block;
sdcard_device.init = rt_sdcard_init;
sdcard_device.open = rt_sdcard_open;
sdcard_device.close = rt_sdcard_close;
sdcard_device.read = rt_sdcard_read;
sdcard_device.write = rt_sdcard_write;
sdcard_device.control = rt_sdcard_control;
/* no private */
sdcard_device.user_data = &SDCfg;
rt_device_register(&sdcard_device, "sd0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
return;
}
rt_kprintf("sdcard init failed\n");
}
else
{
/* there is no partition table */
part.offset = 0;
part.size = 0;
}
/* release sector buffer */
rt_free(sector);
/* register sdcard device */
sdcard_device.type = RT_Device_Class_Block;
sdcard_device.init = rt_sdcard_init;
sdcard_device.open = rt_sdcard_open;
sdcard_device.close = rt_sdcard_close;
sdcard_device.read = rt_sdcard_read;
sdcard_device.write = rt_sdcard_write;
sdcard_device.control = rt_sdcard_control;
/* no private */
sdcard_device.user_data = &SDCfg;
rt_device_register(&sdcard_device, "sd0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
return;
}
rt_kprintf("sdcard init failed\n");
}
bsp/lpc176x/drivers/sd.h
浏览文件 @ a5119d69
......@@ -4,42 +4,43 @@
#include <stdint.h>
/* SD/MMC Commands */
#define GO_IDLE_STATE (0x40 + 0) // CMD0
#define SEND_OP_COND (0x40 + 1)
#define CMD8 (0x40 + 8) // CMD8
#define SEND_CSD (0x40 + 9)
#define SEND_CID (0x40 + 10) // CMD10
#define STOP_TRAN (0x40 + 12) // CMD12
#define SET_BLOCKLEN (0x40 + 16) // CMD16
#define READ_BLOCK (0x40 + 17)
#define READ_MULT_BLOCK (0x40 + 18)
#define WRITE_BLOCK (0x40 + 24)
#define WRITE_MULT_BLOCK (0x40 + 25)
#define APP_CMD (0x40 + 55) // CMD55
#define READ_OCR (0x40 + 58) // CMD58
#define CRC_ON_OFF (0x40 + 59)
#define SD_SEND_OP_COND (0xC0 + 41) // ACMD41
#define SD_STATUS (0xC0 + 13) // ACMD13, SD_STATUS (SDC)
#define SET_WR_BLK_ERASE_COUNT (0xC0 + 23) // ACMD23 (SDC)
#define GO_IDLE_STATE (0x40 + 0) // CMD0
#define SEND_OP_COND (0x40 + 1)
#define CMD8 (0x40 + 8) // CMD8
#define SEND_CSD (0x40 + 9)
#define SEND_CID (0x40 + 10) // CMD10
#define STOP_TRAN (0x40 + 12) // CMD12
#define SET_BLOCKLEN (0x40 + 16) // CMD16
#define READ_BLOCK (0x40 + 17)
#define READ_MULT_BLOCK (0x40 + 18)
#define WRITE_BLOCK (0x40 + 24)
#define WRITE_MULT_BLOCK (0x40 + 25)
#define APP_CMD (0x40 + 55) // CMD55
#define READ_OCR (0x40 + 58) // CMD58
#define CRC_ON_OFF (0x40 + 59)
#define SD_SEND_OP_COND (0xC0 + 41) // ACMD41
#define SD_STATUS (0xC0 + 13) // ACMD13, SD_STATUS (SDC)
#define SET_WR_BLK_ERASE_COUNT (0xC0 + 23) // ACMD23 (SDC)
/* Card type flags (CardType) */
#define CT_NONE 0x00
#define CT_MMC 0x01
#define CT_SD1 0x02
#define CT_SD2 0x04
#define CT_SDC (CT_SD1|CT_SD2)
#define CT_BLOCK 0x08
#define CT_NONE 0x00
#define CT_MMC 0x01
#define CT_SD1 0x02
#define CT_SD2 0x04
#define CT_SDC (CT_SD1|CT_SD2)
#define CT_BLOCK 0x08
/* MMC device configuration */
typedef struct tagSDCFG{
uint32_t sernum; // serial number
uint32_t size; // size=sectorsize*sectorcnt
uint32_t sectorcnt; //
uint32_t sectorsize; // 512
uint32_t blocksize; // erase block size
uint8_t ocr[4]; // OCR
uint8_t cid[16]; // CID
uint8_t csd[16]; // CSD
typedef struct tagSDCFG
{
uint32_t sernum; // serial number
uint32_t size; // size=sectorsize*sectorcnt
uint32_t sectorcnt; //
uint32_t sectorsize; // 512
uint32_t blocksize; // erase block size
uint8_t ocr[4]; // OCR
uint8_t cid[16]; // CID
uint8_t csd[16]; // CSD
} SDCFG;
void rt_hw_sdcard_init(void);
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或