melch
/
Marlin
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

🎨 Format onboard_sd.cpp

Browse Source
2.0.x
Scott Lahteine 3 years ago
parent 3e5d867276
commit 003ce25acf
1 changed files with 182 additions and 175 deletions
Show Stats Download Patch File Download Diff File

357
Marlin/src/HAL/STM32F1/onboard_sd.cpp
Unescape Escape View File

@ -38,8 +38,8 @@
#define SPI_CLOCK_MAX SPI_BAUD_PCLK_DIV_2
#endif
#define CS_LOW() WRITE(ONBOARD_SD_CS_PIN, LOW) /* Set OnboardSPI cs low */
#define CS_HIGH() WRITE(ONBOARD_SD_CS_PIN, HIGH) /* Set OnboardSPI cs high */
#define CS_LOW() WRITE(ONBOARD_SD_CS_PIN, LOW) // Set OnboardSPI cs low
#define CS_HIGH() WRITE(ONBOARD_SD_CS_PIN, HIGH) // Set OnboardSPI cs high
#define FCLK_FAST() ONBOARD_SD_SPI.setClockDivider(SPI_CLOCK_MAX)
#define FCLK_SLOW() ONBOARD_SD_SPI.setClockDivider(SPI_BAUD_PCLK_DIV_256)
@ -49,32 +49,32 @@
---------------------------------------------------------------------------*/
/* MMC/SD command */
#define CMD0 (0) /* GO_IDLE_STATE */
#define CMD1 (1) /* SEND_OP_COND (MMC) */
#define ACMD41 (0x80+41) /* SEND_OP_COND (SDC) */
#define CMD8 (8) /* SEND_IF_COND */
#define CMD9 (9) /* SEND_CSD */
#define CMD10 (10) /* SEND_CID */
#define CMD12 (12) /* STOP_TRANSMISSION */
#define ACMD13 (0x80+13) /* SD_STATUS (SDC) */
#define CMD16 (16) /* SET_BLOCKLEN */
#define CMD17 (17) /* READ_SINGLE_BLOCK */
#define CMD18 (18) /* READ_MULTIPLE_BLOCK */
#define CMD23 (23) /* SET_BLOCK_COUNT (MMC) */
#define ACMD23 (0x80+23) /* SET_WR_BLK_ERASE_COUNT (SDC) */
#define CMD24 (24) /* WRITE_BLOCK */
#define CMD25 (25) /* WRITE_MULTIPLE_BLOCK */
#define CMD32 (32) /* ERASE_ER_BLK_START */
#define CMD33 (33) /* ERASE_ER_BLK_END */
#define CMD38 (38) /* ERASE */
#define CMD48 (48) /* READ_EXTR_SINGLE */
#define CMD49 (49) /* WRITE_EXTR_SINGLE */
#define CMD55 (55) /* APP_CMD */
#define CMD58 (58) /* READ_OCR */
#define CMD0 (0) // GO_IDLE_STATE
#define CMD1 (1) // SEND_OP_COND (MMC)
#define ACMD41 (0x80+41) // SEND_OP_COND (SDC)
#define CMD8 (8) // SEND_IF_COND
#define CMD9 (9) // SEND_CSD
#define CMD10 (10) // SEND_CID
#define CMD12 (12) // STOP_TRANSMISSION
#define ACMD13 (0x80+13) // SD_STATUS (SDC)
#define CMD16 (16) // SET_BLOCKLEN
#define CMD17 (17) // READ_SINGLE_BLOCK
#define CMD18 (18) // READ_MULTIPLE_BLOCK
#define CMD23 (23) // SET_BLOCK_COUNT (MMC)
#define ACMD23 (0x80+23) // SET_WR_BLK_ERASE_COUNT (SDC)
#define CMD24 (24) // WRITE_BLOCK
#define CMD25 (25) // WRITE_MULTIPLE_BLOCK
#define CMD32 (32) // ERASE_ER_BLK_START
#define CMD33 (33) // ERASE_ER_BLK_END
#define CMD38 (38) // ERASE
#define CMD48 (48) // READ_EXTR_SINGLE
#define CMD49 (49) // WRITE_EXTR_SINGLE
#define CMD55 (55) // APP_CMD
#define CMD58 (58) // READ_OCR
static volatile DSTATUS Stat = STA_NOINIT; /* Physical drive status */
static volatile DSTATUS Stat = STA_NOINIT; // Physical drive status
static volatile UINT timeout;
static BYTE CardType; /* Card type flags */
static BYTE CardType; // Card type flags
/*-----------------------------------------------------------------------*/
/* Send/Receive data to the MMC (Platform dependent) */
@ -82,7 +82,7 @@ static BYTE CardType; /* Card type flags */
/* Exchange a byte */
static BYTE xchg_spi (
BYTE dat /* Data to send */
BYTE dat // Data to send
) {
BYTE returnByte = ONBOARD_SD_SPI.transfer(dat);
return returnByte;
@ -90,18 +90,18 @@ static BYTE xchg_spi (
/* Receive multiple byte */
static void rcvr_spi_multi (
BYTE *buff, /* Pointer to data buffer */
UINT btr /* Number of bytes to receive (16, 64 or 512) */
BYTE *buff, // Pointer to data buffer
UINT btr // Number of bytes to receive (16, 64 or 512)
) {
ONBOARD_SD_SPI.dmaTransfer(0, const_cast<uint8_t*>(buff), btr);
}
#if _DISKIO_WRITE
/* Send multiple bytes */
// Send multiple bytes
static void xmit_spi_multi (
const BYTE *buff, /* Pointer to the data */
UINT btx /* Number of bytes to send (multiple of 16) */
const BYTE *buff, // Pointer to the data
UINT btx // Number of bytes to send (multiple of 16)
) {
ONBOARD_SD_SPI.dmaSend(const_cast<uint8_t*>(buff), btx);
}
@ -112,16 +112,15 @@ static void rcvr_spi_multi (
/* Wait for card ready */
/*-----------------------------------------------------------------------*/
static int wait_ready ( /* 1:Ready, 0:Timeout */
UINT wt /* Timeout [ms] */
static int wait_ready ( // 1:Ready, 0:Timeout
UINT wt // Timeout [ms]
) {
BYTE d;
timeout = millis() + wt;
do {
d = xchg_spi(0xFF);
/* This loop takes a while. Insert rot_rdq() here for multitask environment. */
} while (d != 0xFF && (timeout > millis())); /* Wait for card goes ready or timeout */
// This loop takes a while. Insert rot_rdq() here for multitask environment.
} while (d != 0xFF && (timeout > millis())); // Wait for card goes ready or timeout
return (d == 0xFF) ? 1 : 0;
}
@ -131,21 +130,21 @@ static int wait_ready ( /* 1:Ready, 0:Timeout */
/*-----------------------------------------------------------------------*/
static void deselect() {
CS_HIGH(); /* CS = H */
xchg_spi(0xFF); /* Dummy clock (force DO hi-z for multiple slave SPI) */
CS_HIGH(); // CS = H
xchg_spi(0xFF); // Dummy clock (force DO hi-z for multiple slave SPI)
}
/*-----------------------------------------------------------------------*/
/* Select card and wait for ready */
/*-----------------------------------------------------------------------*/
static int select() { /* 1:OK, 0:Timeout */
CS_LOW(); /* CS = L */
xchg_spi(0xFF); /* Dummy clock (force DO enabled) */
static int select() { // 1:OK, 0:Timeout
CS_LOW(); // CS = L
xchg_spi(0xFF); // Dummy clock (force DO enabled)
if (wait_ready(500)) return 1; /* Leading busy check: Wait for card ready */
if (wait_ready(500)) return 1; // Leading busy check: Wait for card ready
deselect(); /* Timeout */
deselect(); // Timeout
return 0;
}
@ -153,16 +152,18 @@ static int select() { /* 1:OK, 0:Timeout */
/* Control SPI module (Platform dependent) */
/*-----------------------------------------------------------------------*/
static void power_on() { /* Enable SSP module and attach it to I/O pads */
// Enable SSP module and attach it to I/O pads
static void sd_power_on() {
ONBOARD_SD_SPI.setModule(ONBOARD_SPI_DEVICE);
ONBOARD_SD_SPI.begin();
ONBOARD_SD_SPI.setBitOrder(MSBFIRST);
ONBOARD_SD_SPI.setDataMode(SPI_MODE0);
OUT_WRITE(ONBOARD_SD_CS_PIN, HIGH); /* Set CS# high */
OUT_WRITE(ONBOARD_SD_CS_PIN, HIGH); // Set CS# high
}
static void power_off() { /* Disable SPI function */
select(); /* Wait for card ready */
// Disable SPI function
static void sd_power_off() {
select(); // Wait for card ready
deselect();
}
@ -170,23 +171,23 @@ static void power_off() { /* Disable SPI function */
/* Receive a data packet from the MMC */
/*-----------------------------------------------------------------------*/
static int rcvr_datablock ( /* 1:OK, 0:Error */
BYTE *buff, /* Data buffer */
UINT btr /* Data block length (byte) */
static int rcvr_datablock ( // 1:OK, 0:Error
BYTE *buff, // Data buffer
UINT btr // Data block length (byte)
) {
BYTE token;
timeout = millis() + 200;
do { /* Wait for DataStart token in timeout of 200ms */
do { // Wait for DataStart token in timeout of 200ms
token = xchg_spi(0xFF);
/* This loop will take a while. Insert rot_rdq() here for multitask environment. */
// This loop will take a while. Insert rot_rdq() here for multitask environment.
} while ((token == 0xFF) && (timeout > millis()));
if (token != 0xFE) return 0; /* Function fails if invalid DataStart token or timeout */
if (token != 0xFE) return 0; // Function fails if invalid DataStart token or timeout
rcvr_spi_multi(buff, btr); /* Store trailing data to the buffer */
xchg_spi(0xFF); xchg_spi(0xFF); /* Discard CRC */
rcvr_spi_multi(buff, btr); // Store trailing data to the buffer
xchg_spi(0xFF); xchg_spi(0xFF); // Discard CRC
return 1; /* Function succeeded */
return 1; // Function succeeded
}
/*-----------------------------------------------------------------------*/
@ -195,25 +196,25 @@ static int rcvr_datablock ( /* 1:OK, 0:Error */
#if _DISKIO_WRITE
static int xmit_datablock ( /* 1:OK, 0:Failed */
const BYTE *buff, /* Ponter to 512 byte data to be sent */
BYTE token /* Token */
static int xmit_datablock( // 1:OK, 0:Failed
const BYTE *buff, // Pointer to 512 byte data to be sent
BYTE token // Token
) {
BYTE resp;
if (!wait_ready(500)) return 0; /* Leading busy check: Wait for card ready to accept data block */
if (!wait_ready(500)) return 0; // Leading busy check: Wait for card ready to accept data block
xchg_spi(token); /* Send token */
if (token == 0xFD) return 1; /* Do not send data if token is StopTran */
xchg_spi(token); // Send token
if (token == 0xFD) return 1; // Do not send data if token is StopTran
xmit_spi_multi(buff, 512); /* Data */
xchg_spi(0xFF); xchg_spi(0xFF); /* Dummy CRC */
xmit_spi_multi(buff, 512); // Data
xchg_spi(0xFF); xchg_spi(0xFF); // Dummy CRC
resp = xchg_spi(0xFF); /* Receive data resp */
resp = xchg_spi(0xFF); // Receive data resp
return (resp & 0x1F) == 0x05 ? 1 : 0; /* Data was accepted or not */
return (resp & 0x1F) == 0x05 ? 1 : 0; // Data was accepted or not
/* Busy check is done at next transmission */
// Busy check is done at next transmission
}
#endif // _DISKIO_WRITE
@ -222,43 +223,43 @@ static int rcvr_datablock ( /* 1:OK, 0:Error */
/* Send a command packet to the MMC */
/*-----------------------------------------------------------------------*/
static BYTE send_cmd ( /* Return value: R1 resp (bit7==1:Failed to send) */
BYTE cmd, /* Command index */
DWORD arg /* Argument */
static BYTE send_cmd( // Return value: R1 resp (bit7==1:Failed to send)
BYTE cmd, // Command index
DWORD arg // Argument
) {
BYTE n, res;
if (cmd & 0x80) { /* Send a CMD55 prior to ACMD<n> */
if (cmd & 0x80) { // Send a CMD55 prior to ACMD<n>
cmd &= 0x7F;
res = send_cmd(CMD55, 0);
if (res > 1) return res;
}
/* Select the card and wait for ready except to stop multiple block read */
// Select the card and wait for ready except to stop multiple block read
if (cmd != CMD12) {
deselect();
if (!select()) return 0xFF;
}
/* Send command packet */
xchg_spi(0x40 | cmd); /* Start + command index */
xchg_spi((BYTE)(arg >> 24)); /* Argument[31..24] */
xchg_spi((BYTE)(arg >> 16)); /* Argument[23..16] */
xchg_spi((BYTE)(arg >> 8)); /* Argument[15..8] */
xchg_spi((BYTE)arg); /* Argument[7..0] */
n = 0x01; /* Dummy CRC + Stop */
if (cmd == CMD0) n = 0x95; /* Valid CRC for CMD0(0) */
if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */
// Send command packet
xchg_spi(0x40 | cmd); // Start + command index
xchg_spi((BYTE)(arg >> 24)); // Argument[31..24]
xchg_spi((BYTE)(arg >> 16)); // Argument[23..16]
xchg_spi((BYTE)(arg >> 8)); // Argument[15..8]
xchg_spi((BYTE)arg); // Argument[7..0]
n = 0x01; // Dummy CRC + Stop
if (cmd == CMD0) n = 0x95; // Valid CRC for CMD0(0)
if (cmd == CMD8) n = 0x87; // Valid CRC for CMD8(0x1AA)
xchg_spi(n);
/* Receive command resp */
if (cmd == CMD12) xchg_spi(0xFF); /* Diacard following one byte when CMD12 */
n = 10; /* Wait for response (10 bytes max) */
// Receive command response
if (cmd == CMD12) xchg_spi(0xFF); // Discard the following byte when CMD12
n = 10; // Wait for response (10 bytes max)
do
res = xchg_spi(0xFF);
while ((res & 0x80) && --n);
return res; /* Return received response */
return res; // Return received response
}
/*--------------------------------------------------------------------------
@ -270,49 +271,52 @@ static BYTE send_cmd ( /* Return value: R1 resp (bit7==1:Failed to send) */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE drv /* Physical drive number (0) */
BYTE drv // Physical drive number (0)
) {
BYTE n, cmd, ty, ocr[4];
if (drv) return STA_NOINIT; /* Supports only drive 0 */
power_on(); /* Initialize SPI */
if (drv) return STA_NOINIT; // Supports only drive 0
sd_power_on(); // Initialize SPI
if (Stat & STA_NODISK) return Stat; /* Is a card existing in the soket? */
if (Stat & STA_NODISK) return Stat; // Is a card existing in the soket?
FCLK_SLOW();
for (n = 10; n; n--) xchg_spi(0xFF); /* Send 80 dummy clocks */
for (n = 10; n; n--) xchg_spi(0xFF); // Send 80 dummy clocks
ty = 0;
if (send_cmd(CMD0, 0) == 1) { /* Put the card SPI state */
timeout = millis() + 1000; /* Initialization timeout = 1 sec */
if (send_cmd(CMD8, 0x1AA) == 1) { /* Is the catd SDv2? */
for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF); /* Get 32 bit return value of R7 resp */
if (ocr[2] == 0x01 && ocr[3] == 0xAA) { /* Does the card support 2.7-3.6V? */
while ((timeout > millis()) && send_cmd(ACMD41, 1UL << 30)) ; /* Wait for end of initialization with ACMD41(HCS) */
if ((timeout > millis()) && send_cmd(CMD58, 0) == 0) { /* Check CCS bit in the OCR */
if (send_cmd(CMD0, 0) == 1) { // Put the card SPI state
timeout = millis() + 1000; // Initialization timeout = 1 sec
if (send_cmd(CMD8, 0x1AA) == 1) { // Is the catd SDv2?
for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF); // Get 32 bit return value of R7 resp
if (ocr[2] == 0x01 && ocr[3] == 0xAA) { // Does the card support 2.7-3.6V?
while ((timeout > millis()) && send_cmd(ACMD41, 1UL << 30)); // Wait for end of initialization with ACMD41(HCS)
if ((timeout > millis()) && send_cmd(CMD58, 0) == 0) { // Check CCS bit in the OCR
for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF);
ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; /* Check if the card is SDv2 */
ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; // Check if the card is SDv2
}
}
} else { /* Not an SDv2 card */
if (send_cmd(ACMD41, 0) <= 1) { /* SDv1 or MMCv3? */
ty = CT_SD1; cmd = ACMD41; /* SDv1 (ACMD41(0)) */
} else {
ty = CT_MMC; cmd = CMD1; /* MMCv3 (CMD1(0)) */
}
else { // Not an SDv2 card
if (send_cmd(ACMD41, 0) <= 1) { // SDv1 or MMCv3?
ty = CT_SD1; cmd = ACMD41; // SDv1 (ACMD41(0))
}
while ((timeout > millis()) && send_cmd(cmd, 0)) ; /* Wait for the card leaves idle state */
if (!(timeout > millis()) || send_cmd(CMD16, 512) != 0) /* Set block length: 512 */
else {
ty = CT_MMC; cmd = CMD1; // MMCv3 (CMD1(0))
}
while ((timeout > millis()) && send_cmd(cmd, 0)); // Wait for the card leaves idle state
if (!(timeout > millis()) || send_cmd(CMD16, 512) != 0) // Set block length: 512
ty = 0;
}
}
CardType = ty; /* Card type */
CardType = ty; // Card type
deselect();
if (ty) { /* OK */
FCLK_FAST(); /* Set fast clock */
Stat &= ~STA_NOINIT; /* Clear STA_NOINIT flag */
} else { /* Failed */
power_off();
if (ty) { // OK
FCLK_FAST(); // Set fast clock
Stat &= ~STA_NOINIT; // Clear STA_NOINIT flag
}
else { // Failed
sd_power_off();
Stat = STA_NOINIT;
}
@ -324,10 +328,10 @@ DSTATUS disk_initialize (
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE drv /* Physical drive number (0) */
BYTE drv // Physical drive number (0)
) {
if (drv) return STA_NOINIT; /* Supports only drive 0 */
return Stat; /* Return disk status */
if (drv) return STA_NOINIT; // Supports only drive 0
return Stat; // Return disk status
}
/*-----------------------------------------------------------------------*/
@ -335,28 +339,28 @@ DSTATUS disk_status (
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE drv, /* Physical drive number (0) */
BYTE *buff, /* Pointer to the data buffer to store read data */
DWORD sector, /* Start sector number (LBA) */
UINT count /* Number of sectors to read (1..128) */
BYTE drv, // Physical drive number (0)
BYTE *buff, // Pointer to the data buffer to store read data
DWORD sector, // Start sector number (LBA)
UINT count // Number of sectors to read (1..128)
) {
BYTE cmd;
if (drv || !count) return RES_PARERR; /* Check parameter */
if (Stat & STA_NOINIT) return RES_NOTRDY; /* Check if drive is ready */
if (!(CardType & CT_BLOCK)) sector *= 512; /* LBA ot BA conversion (byte addressing cards) */
if (drv || !count) return RES_PARERR; // Check parameter
if (Stat & STA_NOINIT) return RES_NOTRDY; // Check if drive is ready
if (!(CardType & CT_BLOCK)) sector *= 512; // LBA ot BA conversion (byte addressing cards)
FCLK_FAST();
cmd = count > 1 ? CMD18 : CMD17; /* READ_MULTIPLE_BLOCK : READ_SINGLE_BLOCK */
cmd = count > 1 ? CMD18 : CMD17; // READ_MULTIPLE_BLOCK : READ_SINGLE_BLOCK
if (send_cmd(cmd, sector) == 0) {
do {
if (!rcvr_datablock(buff, 512)) break;
buff += 512;
} while (--count);
if (cmd == CMD18) send_cmd(CMD12, 0); /* STOP_TRANSMISSION */
if (cmd == CMD18) send_cmd(CMD12, 0); // STOP_TRANSMISSION
}
deselect();
return count ? RES_ERROR : RES_OK; /* Return result */
return count ? RES_ERROR : RES_OK; // Return result
}
/*-----------------------------------------------------------------------*/
@ -366,36 +370,36 @@ DRESULT disk_read (
#if _DISKIO_WRITE
DRESULT disk_write(
BYTE drv, /* Physical drive number (0) */
const BYTE *buff, /* Ponter to the data to write */
DWORD sector, /* Start sector number (LBA) */
UINT count /* Number of sectors to write (1..128) */
BYTE drv, // Physical drive number (0)
const BYTE *buff, // Pointer to the data to write
DWORD sector, // Start sector number (LBA)
UINT count // Number of sectors to write (1..128)
) {
if (drv || !count) return RES_PARERR; /* Check parameter */
if (Stat & STA_NOINIT) return RES_NOTRDY; /* Check drive status */
if (Stat & STA_PROTECT) return RES_WRPRT; /* Check write protect */
if (drv || !count) return RES_PARERR; // Check parameter
if (Stat & STA_NOINIT) return RES_NOTRDY; // Check drive status
if (Stat & STA_PROTECT) return RES_WRPRT; // Check write protect
FCLK_FAST();
if (!(CardType & CT_BLOCK)) sector *= 512; /* LBA ==> BA conversion (byte addressing cards) */
if (!(CardType & CT_BLOCK)) sector *= 512; // LBA ==> BA conversion (byte addressing cards)
if (count == 1) { /* Single sector write */
if ((send_cmd(CMD24, sector) == 0) /* WRITE_BLOCK */
if (count == 1) { // Single sector write
if ((send_cmd(CMD24, sector) == 0) // WRITE_BLOCK
&& xmit_datablock(buff, 0xFE)) {
count = 0;
}
}
else { /* Multiple sector write */
if (CardType & CT_SDC) send_cmd(ACMD23, count); /* Predefine number of sectors */
if (send_cmd(CMD25, sector) == 0) { /* WRITE_MULTIPLE_BLOCK */
else { // Multiple sector write
if (CardType & CT_SDC) send_cmd(ACMD23, count); // Predefine number of sectors
if (send_cmd(CMD25, sector) == 0) { // WRITE_MULTIPLE_BLOCK
do {
if (!xmit_datablock(buff, 0xFC)) break;
buff += 512;
} while (--count);
if (!xmit_datablock(0, 0xFD)) count = 1; /* STOP_TRAN token */
if (!xmit_datablock(0, 0xFD)) count = 1; // STOP_TRAN token
}
}
deselect();
return count ? RES_ERROR : RES_OK; /* Return result */
return count ? RES_ERROR : RES_OK; // Return result
}
#endif // _DISKIO_WRITE
@ -407,9 +411,9 @@ DRESULT disk_read (
#if _DISKIO_IOCTL
DRESULT disk_ioctl (
BYTE drv, /* Physical drive number (0) */
BYTE cmd, /* Control command code */
void *buff /* Pointer to the conrtol data */
BYTE drv, // Physical drive number (0)
BYTE cmd, // Control command code
void *buff // Pointer to the conrtol data
) {
DRESULT res;
BYTE n, csd[16], *ptr = (BYTE *)buff;
@ -420,22 +424,23 @@ DRESULT disk_read (
UINT dc;
#endif
if (drv) return RES_PARERR; /* Check parameter */
if (Stat & STA_NOINIT) return RES_NOTRDY; /* Check if drive is ready */
if (drv) return RES_PARERR; // Check parameter
if (Stat & STA_NOINIT) return RES_NOTRDY; // Check if drive is ready
res = RES_ERROR;
FCLK_FAST();
switch (cmd) {
case CTRL_SYNC: /* Wait for end of internal write process of the drive */
case CTRL_SYNC: // Wait for end of internal write process of the drive
if (select()) res = RES_OK;
break;
case GET_SECTOR_COUNT: /* Get drive capacity in unit of sector (DWORD) */
case GET_SECTOR_COUNT: // Get drive capacity in unit of sector (DWORD)
if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) {
if ((csd[0] >> 6) == 1) { /* SDC ver 2.00 */
if ((csd[0] >> 6) == 1) { // SDC ver 2.00
csize = csd[9] + ((WORD)csd[8] << 8) + ((DWORD)(csd[7] & 63) << 16) + 1;
*(DWORD*)buff = csize << 10;
} else { /* SDC ver 1.XX or MMC ver 3 */
}
else { // SDC ver 1.XX or MMC ver 3
n = (csd[5] & 15) + ((csd[10] & 128) >> 7) + ((csd[9] & 3) << 1) + 2;
csize = (csd[8] >> 6) + ((WORD)csd[7] << 2) + ((WORD)(csd[6] & 3) << 10) + 1;
*(DWORD*)buff = csize << (n - 9);
@ -444,21 +449,23 @@ DRESULT disk_read (
}
break;
case GET_BLOCK_SIZE: /* Get erase block size in unit of sector (DWORD) */
if (CardType & CT_SD2) { /* SDC ver 2.00 */
if (send_cmd(ACMD13, 0) == 0) { /* Read SD status */
case GET_BLOCK_SIZE: // Get erase block size in unit of sector (DWORD)
if (CardType & CT_SD2) { // SDC ver 2.00
if (send_cmd(ACMD13, 0) == 0) { // Read SD status
xchg_spi(0xFF);
if (rcvr_datablock(csd, 16)) { /* Read partial block */
for (n = 64 - 16; n; n--) xchg_spi(0xFF); /* Purge trailing data */
if (rcvr_datablock(csd, 16)) { // Read partial block
for (n = 64 - 16; n; n--) xchg_spi(0xFF); // Purge trailing data
*(DWORD*)buff = 16UL << (csd[10] >> 4);
res = RES_OK;
}
}
} else { /* SDC ver 1.XX or MMC */
if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) { /* Read CSD */
if (CardType & CT_SD1) { /* SDC ver 1.XX */
}
else { // SDC ver 1.XX or MMC
if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) { // Read CSD
if (CardType & CT_SD1) { // SDC ver 1.XX
*(DWORD*)buff = (((csd[10] & 63) << 1) + ((WORD)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
} else { /* MMC */
}
else { // MMC
*(DWORD*)buff = ((WORD)((csd[10] & 124) >> 2) + 1) * (((csd[11] & 3) << 3) + ((csd[11] & 224) >> 5) + 1);
}
res = RES_OK;
@ -466,47 +473,47 @@ DRESULT disk_read (
}
break;
case CTRL_TRIM: /* Erase a block of sectors (used when _USE_TRIM in ffconf.h is 1) */
if (!(CardType & CT_SDC)) break; /* Check if the card is SDC */
if (disk_ioctl(drv, MMC_GET_CSD, csd)) break; /* Get CSD */
if (!(csd[0] >> 6) && !(csd[10] & 0x40)) break; /* Check if sector erase can be applied to the card */
dp = (DWORD *)buff; st = dp[0]; ed = dp[1]; /* Load sector block */
case CTRL_TRIM: // Erase a block of sectors (used when _USE_TRIM in ffconf.h is 1)
if (!(CardType & CT_SDC)) break; // Check if the card is SDC
if (disk_ioctl(drv, MMC_GET_CSD, csd)) break; // Get CSD
if (!(csd[0] >> 6) && !(csd[10] & 0x40)) break; // Check if sector erase can be applied to the card
dp = (DWORD *)buff; st = dp[0]; ed = dp[1]; // Load sector block
if (!(CardType & CT_BLOCK)) {
st *= 512; ed *= 512;
}
if (send_cmd(CMD32, st) == 0 && send_cmd(CMD33, ed) == 0 && send_cmd(CMD38, 0) == 0 && wait_ready(30000)) { /* Erase sector block */
res = RES_OK; /* FatFs does not check result of this command */
if (send_cmd(CMD32, st) == 0 && send_cmd(CMD33, ed) == 0 && send_cmd(CMD38, 0) == 0 && wait_ready(30000)) { // Erase sector block
res = RES_OK; // FatFs does not check result of this command
}
break;
/* Following commands are never used by FatFs module */
// The following commands are never used by FatFs module
case MMC_GET_TYPE: /* Get MMC/SDC type (BYTE) */
case MMC_GET_TYPE: // Get MMC/SDC type (BYTE)
*ptr = CardType;
res = RES_OK;
break;
case MMC_GET_CSD: /* Read CSD (16 bytes) */
if (send_cmd(CMD9, 0) == 0 && rcvr_datablock(ptr, 16)) { /* READ_CSD */
case MMC_GET_CSD: // Read CSD (16 bytes)
if (send_cmd(CMD9, 0) == 0 && rcvr_datablock(ptr, 16)) {
res = RES_OK;
}
break;
case MMC_GET_CID: /* Read CID (16 bytes) */
if (send_cmd(CMD10, 0) == 0 && rcvr_datablock(ptr, 16)) { /* READ_CID */
case MMC_GET_CID: // Read CID (16 bytes)
if (send_cmd(CMD10, 0) == 0 && rcvr_datablock(ptr, 16)) {
res = RES_OK;
}
break;
case MMC_GET_OCR: /* Read OCR (4 bytes) */
if (send_cmd(CMD58, 0) == 0) { /* READ_OCR */
case MMC_GET_OCR: // Read OCR (4 bytes)
if (send_cmd(CMD58, 0) == 0) {
for (n = 4; n; n--) *ptr++ = xchg_spi(0xFF);
res = RES_OK;
}
break;
case MMC_GET_SDSTAT: /* Read SD status (64 bytes) */
if (send_cmd(ACMD13, 0) == 0) { /* SD_STATUS */
case MMC_GET_SDSTAT: // Read SD status (64 bytes)
if (send_cmd(ACMD13, 0) == 0) {
xchg_spi(0xFF);
if (rcvr_datablock(ptr, 64)) res = RES_OK;
}

Write Preview
Loading…
Cancel
Save