🎨 Format onboard_sd.cpp
This commit is contained in:
Scott Lahteine
parent
3e5d867276
commit
003ce25acf
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@ -38,8 +38,8 @@
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#define SPI_CLOCK_MAX SPI_BAUD_PCLK_DIV_2
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#endif
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#define CS_LOW() WRITE(ONBOARD_SD_CS_PIN, LOW) /* Set OnboardSPI cs low */
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#define CS_HIGH() WRITE(ONBOARD_SD_CS_PIN, HIGH) /* Set OnboardSPI cs high */
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#define CS_LOW() WRITE(ONBOARD_SD_CS_PIN, LOW) // Set OnboardSPI cs low
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#define CS_HIGH() WRITE(ONBOARD_SD_CS_PIN, HIGH) // Set OnboardSPI cs high
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#define FCLK_FAST() ONBOARD_SD_SPI.setClockDivider(SPI_CLOCK_MAX)
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#define FCLK_SLOW() ONBOARD_SD_SPI.setClockDivider(SPI_BAUD_PCLK_DIV_256)
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@ -49,32 +49,32 @@
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---------------------------------------------------------------------------*/
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/* MMC/SD command */
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#define CMD0 (0) /* GO_IDLE_STATE */
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#define CMD1 (1) /* SEND_OP_COND (MMC) */
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#define ACMD41 (0x80+41) /* SEND_OP_COND (SDC) */
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#define CMD8 (8) /* SEND_IF_COND */
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#define CMD9 (9) /* SEND_CSD */
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#define CMD10 (10) /* SEND_CID */
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#define CMD12 (12) /* STOP_TRANSMISSION */
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#define ACMD13 (0x80+13) /* SD_STATUS (SDC) */
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#define CMD16 (16) /* SET_BLOCKLEN */
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#define CMD17 (17) /* READ_SINGLE_BLOCK */
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#define CMD18 (18) /* READ_MULTIPLE_BLOCK */
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#define CMD23 (23) /* SET_BLOCK_COUNT (MMC) */
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#define ACMD23 (0x80+23) /* SET_WR_BLK_ERASE_COUNT (SDC) */
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#define CMD24 (24) /* WRITE_BLOCK */
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#define CMD25 (25) /* WRITE_MULTIPLE_BLOCK */
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#define CMD32 (32) /* ERASE_ER_BLK_START */
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#define CMD33 (33) /* ERASE_ER_BLK_END */
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#define CMD38 (38) /* ERASE */
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#define CMD48 (48) /* READ_EXTR_SINGLE */
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#define CMD49 (49) /* WRITE_EXTR_SINGLE */
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#define CMD55 (55) /* APP_CMD */
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#define CMD58 (58) /* READ_OCR */
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#define CMD0 (0) // GO_IDLE_STATE
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#define CMD1 (1) // SEND_OP_COND (MMC)
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#define ACMD41 (0x80+41) // SEND_OP_COND (SDC)
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#define CMD8 (8) // SEND_IF_COND
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#define CMD9 (9) // SEND_CSD
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#define CMD10 (10) // SEND_CID
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#define CMD12 (12) // STOP_TRANSMISSION
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#define ACMD13 (0x80+13) // SD_STATUS (SDC)
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#define CMD16 (16) // SET_BLOCKLEN
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#define CMD17 (17) // READ_SINGLE_BLOCK
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#define CMD18 (18) // READ_MULTIPLE_BLOCK
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#define CMD23 (23) // SET_BLOCK_COUNT (MMC)
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#define ACMD23 (0x80+23) // SET_WR_BLK_ERASE_COUNT (SDC)
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#define CMD24 (24) // WRITE_BLOCK
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#define CMD25 (25) // WRITE_MULTIPLE_BLOCK
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#define CMD32 (32) // ERASE_ER_BLK_START
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#define CMD33 (33) // ERASE_ER_BLK_END
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#define CMD38 (38) // ERASE
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#define CMD48 (48) // READ_EXTR_SINGLE
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#define CMD49 (49) // WRITE_EXTR_SINGLE
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#define CMD55 (55) // APP_CMD
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#define CMD58 (58) // READ_OCR
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static volatile DSTATUS Stat = STA_NOINIT; /* Physical drive status */
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static volatile DSTATUS Stat = STA_NOINIT; // Physical drive status
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static volatile UINT timeout;
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static BYTE CardType; /* Card type flags */
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static BYTE CardType; // Card type flags
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/*-----------------------------------------------------------------------*/
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/* Send/Receive data to the MMC (Platform dependent) */
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@ -82,7 +82,7 @@ static BYTE CardType; /* Card type flags */
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/* Exchange a byte */
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static BYTE xchg_spi (
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BYTE dat /* Data to send */
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BYTE dat // Data to send
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) {
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BYTE returnByte = ONBOARD_SD_SPI.transfer(dat);
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return returnByte;
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@ -90,18 +90,18 @@ static BYTE xchg_spi (
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/* Receive multiple byte */
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static void rcvr_spi_multi (
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BYTE *buff, /* Pointer to data buffer */
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UINT btr /* Number of bytes to receive (16, 64 or 512) */
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BYTE *buff, // Pointer to data buffer
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UINT btr // Number of bytes to receive (16, 64 or 512)
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) {
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ONBOARD_SD_SPI.dmaTransfer(0, const_cast<uint8_t*>(buff), btr);
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}
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#if _DISKIO_WRITE
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/* Send multiple bytes */
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// Send multiple bytes
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static void xmit_spi_multi (
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const BYTE *buff, /* Pointer to the data */
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UINT btx /* Number of bytes to send (multiple of 16) */
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const BYTE *buff, // Pointer to the data
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UINT btx // Number of bytes to send (multiple of 16)
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) {
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ONBOARD_SD_SPI.dmaSend(const_cast<uint8_t*>(buff), btx);
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}
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@ -112,16 +112,15 @@ static void rcvr_spi_multi (
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/* Wait for card ready */
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/*-----------------------------------------------------------------------*/
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static int wait_ready ( /* 1:Ready, 0:Timeout */
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UINT wt /* Timeout [ms] */
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static int wait_ready ( // 1:Ready, 0:Timeout
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UINT wt // Timeout [ms]
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) {
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BYTE d;
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timeout = millis() + wt;
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do {
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d = xchg_spi(0xFF);
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/* This loop takes a while. Insert rot_rdq() here for multitask environment. */
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} while (d != 0xFF && (timeout > millis())); /* Wait for card goes ready or timeout */
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// This loop takes a while. Insert rot_rdq() here for multitask environment.
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} while (d != 0xFF && (timeout > millis())); // Wait for card goes ready or timeout
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return (d == 0xFF) ? 1 : 0;
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}
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@ -131,21 +130,21 @@ static int wait_ready ( /* 1:Ready, 0:Timeout */
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/*-----------------------------------------------------------------------*/
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static void deselect() {
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CS_HIGH(); /* CS = H */
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xchg_spi(0xFF); /* Dummy clock (force DO hi-z for multiple slave SPI) */
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CS_HIGH(); // CS = H
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xchg_spi(0xFF); // Dummy clock (force DO hi-z for multiple slave SPI)
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}
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/*-----------------------------------------------------------------------*/
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/* Select card and wait for ready */
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/*-----------------------------------------------------------------------*/
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static int select() { /* 1:OK, 0:Timeout */
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CS_LOW(); /* CS = L */
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xchg_spi(0xFF); /* Dummy clock (force DO enabled) */
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static int select() { // 1:OK, 0:Timeout
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CS_LOW(); // CS = L
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xchg_spi(0xFF); // Dummy clock (force DO enabled)
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if (wait_ready(500)) return 1; /* Leading busy check: Wait for card ready */
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if (wait_ready(500)) return 1; // Leading busy check: Wait for card ready
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deselect(); /* Timeout */
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deselect(); // Timeout
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return 0;
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}
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@ -153,16 +152,18 @@ static int select() { /* 1:OK, 0:Timeout */
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/* Control SPI module (Platform dependent) */
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/*-----------------------------------------------------------------------*/
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static void power_on() { /* Enable SSP module and attach it to I/O pads */
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// Enable SSP module and attach it to I/O pads
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static void sd_power_on() {
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ONBOARD_SD_SPI.setModule(ONBOARD_SPI_DEVICE);
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ONBOARD_SD_SPI.begin();
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ONBOARD_SD_SPI.setBitOrder(MSBFIRST);
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ONBOARD_SD_SPI.setDataMode(SPI_MODE0);
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OUT_WRITE(ONBOARD_SD_CS_PIN, HIGH); /* Set CS# high */
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OUT_WRITE(ONBOARD_SD_CS_PIN, HIGH); // Set CS# high
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}
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static void power_off() { /* Disable SPI function */
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select(); /* Wait for card ready */
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// Disable SPI function
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static void sd_power_off() {
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select(); // Wait for card ready
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deselect();
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}
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@ -170,23 +171,23 @@ static void power_off() { /* Disable SPI function */
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/* Receive a data packet from the MMC */
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/*-----------------------------------------------------------------------*/
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static int rcvr_datablock ( /* 1:OK, 0:Error */
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BYTE *buff, /* Data buffer */
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UINT btr /* Data block length (byte) */
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static int rcvr_datablock ( // 1:OK, 0:Error
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BYTE *buff, // Data buffer
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UINT btr // Data block length (byte)
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) {
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BYTE token;
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timeout = millis() + 200;
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do { /* Wait for DataStart token in timeout of 200ms */
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do { // Wait for DataStart token in timeout of 200ms
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token = xchg_spi(0xFF);
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/* This loop will take a while. Insert rot_rdq() here for multitask environment. */
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// This loop will take a while. Insert rot_rdq() here for multitask environment.
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} while ((token == 0xFF) && (timeout > millis()));
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if (token != 0xFE) return 0; /* Function fails if invalid DataStart token or timeout */
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if (token != 0xFE) return 0; // Function fails if invalid DataStart token or timeout
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rcvr_spi_multi(buff, btr); /* Store trailing data to the buffer */
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xchg_spi(0xFF); xchg_spi(0xFF); /* Discard CRC */
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rcvr_spi_multi(buff, btr); // Store trailing data to the buffer
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xchg_spi(0xFF); xchg_spi(0xFF); // Discard CRC
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return 1; /* Function succeeded */
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return 1; // Function succeeded
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}
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/*-----------------------------------------------------------------------*/
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@ -195,25 +196,25 @@ static int rcvr_datablock ( /* 1:OK, 0:Error */
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#if _DISKIO_WRITE
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static int xmit_datablock ( /* 1:OK, 0:Failed */
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const BYTE *buff, /* Ponter to 512 byte data to be sent */
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BYTE token /* Token */
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static int xmit_datablock( // 1:OK, 0:Failed
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const BYTE *buff, // Pointer to 512 byte data to be sent
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BYTE token // Token
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) {
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BYTE resp;
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if (!wait_ready(500)) return 0; /* Leading busy check: Wait for card ready to accept data block */
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if (!wait_ready(500)) return 0; // Leading busy check: Wait for card ready to accept data block
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xchg_spi(token); /* Send token */
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if (token == 0xFD) return 1; /* Do not send data if token is StopTran */
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xchg_spi(token); // Send token
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if (token == 0xFD) return 1; // Do not send data if token is StopTran
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xmit_spi_multi(buff, 512); /* Data */
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xchg_spi(0xFF); xchg_spi(0xFF); /* Dummy CRC */
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xmit_spi_multi(buff, 512); // Data
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xchg_spi(0xFF); xchg_spi(0xFF); // Dummy CRC
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resp = xchg_spi(0xFF); /* Receive data resp */
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resp = xchg_spi(0xFF); // Receive data resp
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return (resp & 0x1F) == 0x05 ? 1 : 0; /* Data was accepted or not */
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return (resp & 0x1F) == 0x05 ? 1 : 0; // Data was accepted or not
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/* Busy check is done at next transmission */
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// Busy check is done at next transmission
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}
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#endif // _DISKIO_WRITE
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@ -222,43 +223,43 @@ static int rcvr_datablock ( /* 1:OK, 0:Error */
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/* Send a command packet to the MMC */
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/*-----------------------------------------------------------------------*/
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static BYTE send_cmd ( /* Return value: R1 resp (bit7==1:Failed to send) */
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BYTE cmd, /* Command index */
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DWORD arg /* Argument */
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static BYTE send_cmd( // Return value: R1 resp (bit7==1:Failed to send)
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BYTE cmd, // Command index
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DWORD arg // Argument
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) {
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BYTE n, res;
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if (cmd & 0x80) { /* Send a CMD55 prior to ACMD<n> */
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if (cmd & 0x80) { // Send a CMD55 prior to ACMD<n>
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cmd &= 0x7F;
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res = send_cmd(CMD55, 0);
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if (res > 1) return res;
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}
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/* Select the card and wait for ready except to stop multiple block read */
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// Select the card and wait for ready except to stop multiple block read
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if (cmd != CMD12) {
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deselect();
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if (!select()) return 0xFF;
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}
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/* Send command packet */
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xchg_spi(0x40 | cmd); /* Start + command index */
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xchg_spi((BYTE)(arg >> 24)); /* Argument[31..24] */
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xchg_spi((BYTE)(arg >> 16)); /* Argument[23..16] */
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xchg_spi((BYTE)(arg >> 8)); /* Argument[15..8] */
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xchg_spi((BYTE)arg); /* Argument[7..0] */
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n = 0x01; /* Dummy CRC + Stop */
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if (cmd == CMD0) n = 0x95; /* Valid CRC for CMD0(0) */
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if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */
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// Send command packet
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xchg_spi(0x40 | cmd); // Start + command index
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xchg_spi((BYTE)(arg >> 24)); // Argument[31..24]
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xchg_spi((BYTE)(arg >> 16)); // Argument[23..16]
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xchg_spi((BYTE)(arg >> 8)); // Argument[15..8]
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xchg_spi((BYTE)arg); // Argument[7..0]
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n = 0x01; // Dummy CRC + Stop
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if (cmd == CMD0) n = 0x95; // Valid CRC for CMD0(0)
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if (cmd == CMD8) n = 0x87; // Valid CRC for CMD8(0x1AA)
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xchg_spi(n);
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/* Receive command resp */
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if (cmd == CMD12) xchg_spi(0xFF); /* Diacard following one byte when CMD12 */
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n = 10; /* Wait for response (10 bytes max) */
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// Receive command response
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if (cmd == CMD12) xchg_spi(0xFF); // Discard the following byte when CMD12
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n = 10; // Wait for response (10 bytes max)
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do
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res = xchg_spi(0xFF);
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while ((res & 0x80) && --n);
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return res; /* Return received response */
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return res; // Return received response
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}
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/*--------------------------------------------------------------------------
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@ -270,49 +271,52 @@ static BYTE send_cmd ( /* Return value: R1 resp (bit7==1:Failed to send) */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE drv /* Physical drive number (0) */
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BYTE drv // Physical drive number (0)
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) {
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BYTE n, cmd, ty, ocr[4];
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if (drv) return STA_NOINIT; /* Supports only drive 0 */
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power_on(); /* Initialize SPI */
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if (drv) return STA_NOINIT; // Supports only drive 0
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sd_power_on(); // Initialize SPI
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if (Stat & STA_NODISK) return Stat; /* Is a card existing in the soket? */
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if (Stat & STA_NODISK) return Stat; // Is a card existing in the soket?
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FCLK_SLOW();
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for (n = 10; n; n--) xchg_spi(0xFF); /* Send 80 dummy clocks */
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for (n = 10; n; n--) xchg_spi(0xFF); // Send 80 dummy clocks
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ty = 0;
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if (send_cmd(CMD0, 0) == 1) { /* Put the card SPI state */
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timeout = millis() + 1000; /* Initialization timeout = 1 sec */
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if (send_cmd(CMD8, 0x1AA) == 1) { /* Is the catd SDv2? */
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for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF); /* Get 32 bit return value of R7 resp */
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if (ocr[2] == 0x01 && ocr[3] == 0xAA) { /* Does the card support 2.7-3.6V? */
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while ((timeout > millis()) && send_cmd(ACMD41, 1UL << 30)) ; /* Wait for end of initialization with ACMD41(HCS) */
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if ((timeout > millis()) && send_cmd(CMD58, 0) == 0) { /* Check CCS bit in the OCR */
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if (send_cmd(CMD0, 0) == 1) { // Put the card SPI state
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timeout = millis() + 1000; // Initialization timeout = 1 sec
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if (send_cmd(CMD8, 0x1AA) == 1) { // Is the catd SDv2?
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for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF); // Get 32 bit return value of R7 resp
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if (ocr[2] == 0x01 && ocr[3] == 0xAA) { // Does the card support 2.7-3.6V?
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while ((timeout > millis()) && send_cmd(ACMD41, 1UL << 30)); // Wait for end of initialization with ACMD41(HCS)
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if ((timeout > millis()) && send_cmd(CMD58, 0) == 0) { // Check CCS bit in the OCR
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for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF);
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ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; /* Check if the card is SDv2 */
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ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; // Check if the card is SDv2
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}
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}
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} else { /* Not an SDv2 card */
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if (send_cmd(ACMD41, 0) <= 1) { /* SDv1 or MMCv3? */
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ty = CT_SD1; cmd = ACMD41; /* SDv1 (ACMD41(0)) */
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} else {
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ty = CT_MMC; cmd = CMD1; /* MMCv3 (CMD1(0)) */
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}
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while ((timeout > millis()) && send_cmd(cmd, 0)) ; /* Wait for the card leaves idle state */
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if (!(timeout > millis()) || send_cmd(CMD16, 512) != 0) /* Set block length: 512 */
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else { // Not an SDv2 card
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if (send_cmd(ACMD41, 0) <= 1) { // SDv1 or MMCv3?
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ty = CT_SD1; cmd = ACMD41; // SDv1 (ACMD41(0))
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}
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else {
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ty = CT_MMC; cmd = CMD1; // MMCv3 (CMD1(0))
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}
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while ((timeout > millis()) && send_cmd(cmd, 0)); // Wait for the card leaves idle state
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if (!(timeout > millis()) || send_cmd(CMD16, 512) != 0) // Set block length: 512
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ty = 0;
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}
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}
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CardType = ty; /* Card type */
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CardType = ty; // Card type
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deselect();
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if (ty) { /* OK */
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FCLK_FAST(); /* Set fast clock */
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Stat &= ~STA_NOINIT; /* Clear STA_NOINIT flag */
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} else { /* Failed */
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power_off();
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if (ty) { // OK
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FCLK_FAST(); // Set fast clock
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Stat &= ~STA_NOINIT; // Clear STA_NOINIT flag
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}
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else { // Failed
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sd_power_off();
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Stat = STA_NOINIT;
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}
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@ -324,10 +328,10 @@ DSTATUS disk_initialize (
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/*-----------------------------------------------------------------------*/
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|
||||
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;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue