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- /**
- * STM32F1: MMCv3/SDv1/SDv2 (SPI mode) control module
- *
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2019 BigTreeTech [https://github.com/bigtreetech]
- * Copyright (C) 2015, ChaN, all right reserved.
- *
- * This software is a free software and there is NO WARRANTY.
- * No restriction on use. You can use, modify and redistribute it for
- * personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
- * Redistributions of source code must retain the above copyright notice.
- *
- */
-
- #include "../../inc/MarlinConfig.h"
-
- #if SD_CONNECTION_IS(ONBOARD)
-
- #include "onboard_sd.h"
- #include "SPI.h"
- #include "fastio.h"
-
- #if HAS_SHARED_MEDIA
- #ifndef ON_BOARD_SPI_DEVICE
- #define ON_BOARD_SPI_DEVICE SPI_DEVICE
- #endif
- #define ONBOARD_SD_SPI SPI
- #else
- SPIClass OnBoardSPI(ON_BOARD_SPI_DEVICE);
- #define ONBOARD_SD_SPI OnBoardSPI
- #endif
-
- #if ON_BOARD_SPI_DEVICE == 1
- #define SPI_CLOCK_MAX SPI_BAUD_PCLK_DIV_4
- #else
- #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 FCLK_FAST() ONBOARD_SD_SPI.setClockDivider(SPI_CLOCK_MAX)
- #define FCLK_SLOW() ONBOARD_SD_SPI.setClockDivider(SPI_BAUD_PCLK_DIV_256)
-
- /*--------------------------------------------------------------------------
- Module Private Functions
- ---------------------------------------------------------------------------*/
-
- /* 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 */
-
- static volatile DSTATUS Stat = STA_NOINIT; /* Physical drive status */
- static volatile UINT timeout;
- static BYTE CardType; /* Card type flags */
-
- /*-----------------------------------------------------------------------*/
- /* Send/Receive data to the MMC (Platform dependent) */
- /*-----------------------------------------------------------------------*/
-
- /* Exchange a byte */
- static BYTE xchg_spi (
- BYTE dat /* Data to send */
- ) {
- BYTE returnByte = ONBOARD_SD_SPI.transfer(dat);
- return returnByte;
- }
-
- /* 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) */
- ) {
- ONBOARD_SD_SPI.dmaTransfer(0, const_cast<uint8_t*>(buff), btr);
- }
-
- #if _DISKIO_WRITE
-
- /* 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) */
- ) {
- ONBOARD_SD_SPI.dmaSend(const_cast<uint8_t*>(buff), btx);
- }
-
- #endif // _DISKIO_WRITE
-
- /*-----------------------------------------------------------------------*/
- /* Wait for card ready */
- /*-----------------------------------------------------------------------*/
-
- 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 */
-
- return (d == 0xFF) ? 1 : 0;
- }
-
- /*-----------------------------------------------------------------------*/
- /* Deselect card and release SPI */
- /*-----------------------------------------------------------------------*/
-
- static void deselect() {
- 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) */
-
- if (wait_ready(500)) return 1; /* Leading busy check: Wait for card ready */
-
- deselect(); /* Timeout */
- return 0;
- }
-
- /*-----------------------------------------------------------------------*/
- /* Control SPI module (Platform dependent) */
- /*-----------------------------------------------------------------------*/
-
- static void power_on() { /* Enable SSP module and attach it to I/O pads */
- ONBOARD_SD_SPI.setModule(ON_BOARD_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 */
- }
-
- static void power_off() { /* Disable SPI function */
- select(); /* Wait for card ready */
- deselect();
- }
-
- /*-----------------------------------------------------------------------*/
- /* 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) */
- ) {
- BYTE token;
-
- timeout = millis() + 200;
- 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. */
- } while ((token == 0xFF) && (timeout > millis()));
- 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 */
-
- return 1; /* Function succeeded */
- }
-
- /*-----------------------------------------------------------------------*/
- /* Send a data packet to the MMC */
- /*-----------------------------------------------------------------------*/
-
- #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 */
- ) {
- BYTE resp;
-
- 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 */
-
- xmit_spi_multi(buff, 512); /* Data */
- xchg_spi(0xFF); xchg_spi(0xFF); /* Dummy CRC */
-
- resp = xchg_spi(0xFF); /* Receive data resp */
-
- return (resp & 0x1F) == 0x05 ? 1 : 0; /* Data was accepted or not */
-
- /* Busy check is done at next transmission */
- }
-
- #endif // _DISKIO_WRITE
-
- /*-----------------------------------------------------------------------*/
- /* 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 */
- ) {
- BYTE n, res;
-
- 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 */
- 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) */
- 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) */
- do
- res = xchg_spi(0xFF);
- while ((res & 0x80) && --n);
-
- return res; /* Return received response */
- }
-
- /*--------------------------------------------------------------------------
- Public Functions
- ---------------------------------------------------------------------------*/
-
- /*-----------------------------------------------------------------------*/
- /* Initialize disk drive */
- /*-----------------------------------------------------------------------*/
-
- DSTATUS disk_initialize (
- 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 (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 */
-
- 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 */
- 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 */
- }
- }
- } 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)) */
- }
- 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 */
- deselect();
-
- if (ty) { /* OK */
- FCLK_FAST(); /* Set fast clock */
- Stat &= ~STA_NOINIT; /* Clear STA_NOINIT flag */
- } else { /* Failed */
- power_off();
- Stat = STA_NOINIT;
- }
-
- return Stat;
- }
-
- /*-----------------------------------------------------------------------*/
- /* Get disk status */
- /*-----------------------------------------------------------------------*/
-
- DSTATUS disk_status (
- BYTE drv /* Physical drive number (0) */
- ) {
- if (drv) return STA_NOINIT; /* Supports only drive 0 */
- return Stat; /* Return disk status */
- }
-
- /*-----------------------------------------------------------------------*/
- /* Read sector(s) */
- /*-----------------------------------------------------------------------*/
-
- 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 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) */
- FCLK_FAST();
- 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 */
- }
- deselect();
-
- return count ? RES_ERROR : RES_OK; /* Return result */
- }
-
- /*-----------------------------------------------------------------------*/
- /* Write sector(s) */
- /*-----------------------------------------------------------------------*/
-
- #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) */
- ) {
- 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 (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 */
- do {
- if (!xmit_datablock(buff, 0xFC)) break;
- buff += 512;
- } while (--count);
- if (!xmit_datablock(0, 0xFD)) count = 1; /* STOP_TRAN token */
- }
- }
- deselect();
-
- return count ? RES_ERROR : RES_OK; /* Return result */
- }
-
- #endif // _DISKIO_WRITE
-
- /*-----------------------------------------------------------------------*/
- /* Miscellaneous drive controls other than data read/write */
- /*-----------------------------------------------------------------------*/
-
- #if _DISKIO_IOCTL
-
- DRESULT disk_ioctl (
- 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;
- DWORD *dp, st, ed, csize;
- #if _DISKIO_ISDIO
- SDIO_CMD *sdio = buff;
- BYTE rc, *buf;
- UINT dc;
- #endif
-
- 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 */
- if (select()) res = RES_OK;
- break;
-
- 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 */
- 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 */
- 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);
- }
- res = RES_OK;
- }
- 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 */
- xchg_spi(0xFF);
- 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 */
- *(DWORD*)buff = (((csd[10] & 63) << 1) + ((WORD)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
- } else { /* MMC */
- *(DWORD*)buff = ((WORD)((csd[10] & 124) >> 2) + 1) * (((csd[11] & 3) << 3) + ((csd[11] & 224) >> 5) + 1);
- }
- res = RES_OK;
- }
- }
- 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 */
- 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 */
- }
- break;
-
- /* Following commands are never used by FatFs module */
-
- 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 */
- res = RES_OK;
- }
- break;
-
- case MMC_GET_CID: /* Read CID (16 bytes) */
- if (send_cmd(CMD10, 0) == 0 && rcvr_datablock(ptr, 16)) { /* READ_CID */
- res = RES_OK;
- }
- break;
-
- case MMC_GET_OCR: /* Read OCR (4 bytes) */
- if (send_cmd(CMD58, 0) == 0) { /* READ_OCR */
- 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 */
- xchg_spi(0xFF);
- if (rcvr_datablock(ptr, 64)) res = RES_OK;
- }
- break;
-
- #if _DISKIO_ISDIO
-
- case ISDIO_READ:
- sdio = buff;
- if (send_cmd(CMD48, 0x80000000 | sdio->func << 28 | sdio->addr << 9 | ((sdio->ndata - 1) & 0x1FF)) == 0) {
- for (Timer1 = 1000; (rc = xchg_spi(0xFF)) == 0xFF && Timer1; ) ;
- if (rc == 0xFE) {
- for (buf = sdio->data, dc = sdio->ndata; dc; dc--) *buf++ = xchg_spi(0xFF);
- for (dc = 514 - sdio->ndata; dc; dc--) xchg_spi(0xFF);
- res = RES_OK;
- }
- }
- break;
- case ISDIO_WRITE:
- sdio = buff;
- if (send_cmd(CMD49, 0x80000000 | sdio->func << 28 | sdio->addr << 9 | ((sdio->ndata - 1) & 0x1FF)) == 0) {
- xchg_spi(0xFF); xchg_spi(0xFE);
- for (buf = sdio->data, dc = sdio->ndata; dc; dc--) xchg_spi(*buf++);
- for (dc = 514 - sdio->ndata; dc; dc--) xchg_spi(0xFF);
- if ((xchg_spi(0xFF) & 0x1F) == 0x05) res = RES_OK;
- }
- break;
- case ISDIO_MRITE:
- sdio = buff;
- if (send_cmd(CMD49, 0x84000000 | sdio->func << 28 | sdio->addr << 9 | sdio->ndata >> 8) == 0) {
- xchg_spi(0xFF); xchg_spi(0xFE);
- xchg_spi(sdio->ndata);
- for (dc = 513; dc; dc--) xchg_spi(0xFF);
- if ((xchg_spi(0xFF) & 0x1F) == 0x05) res = RES_OK;
- }
- break;
-
- #endif // _DISKIO_ISDIO
-
- default: res = RES_PARERR;
- }
-
- deselect();
- return res;
- }
-
- #endif // _DISKIO_IOCTL
-
- #endif // SD_CONNECTION_IS(ONBOARD)
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