diff options
Diffstat (limited to 'os/hal/src/mmc_spi.c')
| -rw-r--r-- | os/hal/src/mmc_spi.c | 878 |
1 files changed, 0 insertions, 878 deletions
diff --git a/os/hal/src/mmc_spi.c b/os/hal/src/mmc_spi.c deleted file mode 100644 index 3a5958ec8..000000000 --- a/os/hal/src/mmc_spi.c +++ /dev/null @@ -1,878 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-/*
- Parts of this file have been contributed by Matthias Blaicher.
- */
-
-/**
- * @file mmc_spi.c
- * @brief MMC over SPI driver code.
- *
- * @addtogroup MMC_SPI
- * @{
- */
-
-#include <string.h>
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_MMC_SPI || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/* Forward declarations required by mmc_vmt.*/
-static bool_t mmc_read(void *instance, uint32_t startblk,
- uint8_t *buffer, uint32_t n);
-static bool_t mmc_write(void *instance, uint32_t startblk,
- const uint8_t *buffer, uint32_t n);
-
-/**
- * @brief Virtual methods table.
- */
-static const struct MMCDriverVMT mmc_vmt = {
- (bool_t (*)(void *))mmc_lld_is_card_inserted,
- (bool_t (*)(void *))mmc_lld_is_write_protected,
- (bool_t (*)(void *))mmcConnect,
- (bool_t (*)(void *))mmcDisconnect,
- mmc_read,
- mmc_write,
- (bool_t (*)(void *))mmcSync,
- (bool_t (*)(void *, BlockDeviceInfo *))mmcGetInfo
-};
-
-/**
- * @brief Lookup table for CRC-7 ( based on polynomial x^7 + x^3 + 1).
- */
-static const uint8_t crc7_lookup_table[256] = {
- 0x00, 0x09, 0x12, 0x1b, 0x24, 0x2d, 0x36, 0x3f, 0x48, 0x41, 0x5a, 0x53,
- 0x6c, 0x65, 0x7e, 0x77, 0x19, 0x10, 0x0b, 0x02, 0x3d, 0x34, 0x2f, 0x26,
- 0x51, 0x58, 0x43, 0x4a, 0x75, 0x7c, 0x67, 0x6e, 0x32, 0x3b, 0x20, 0x29,
- 0x16, 0x1f, 0x04, 0x0d, 0x7a, 0x73, 0x68, 0x61, 0x5e, 0x57, 0x4c, 0x45,
- 0x2b, 0x22, 0x39, 0x30, 0x0f, 0x06, 0x1d, 0x14, 0x63, 0x6a, 0x71, 0x78,
- 0x47, 0x4e, 0x55, 0x5c, 0x64, 0x6d, 0x76, 0x7f, 0x40, 0x49, 0x52, 0x5b,
- 0x2c, 0x25, 0x3e, 0x37, 0x08, 0x01, 0x1a, 0x13, 0x7d, 0x74, 0x6f, 0x66,
- 0x59, 0x50, 0x4b, 0x42, 0x35, 0x3c, 0x27, 0x2e, 0x11, 0x18, 0x03, 0x0a,
- 0x56, 0x5f, 0x44, 0x4d, 0x72, 0x7b, 0x60, 0x69, 0x1e, 0x17, 0x0c, 0x05,
- 0x3a, 0x33, 0x28, 0x21, 0x4f, 0x46, 0x5d, 0x54, 0x6b, 0x62, 0x79, 0x70,
- 0x07, 0x0e, 0x15, 0x1c, 0x23, 0x2a, 0x31, 0x38, 0x41, 0x48, 0x53, 0x5a,
- 0x65, 0x6c, 0x77, 0x7e, 0x09, 0x00, 0x1b, 0x12, 0x2d, 0x24, 0x3f, 0x36,
- 0x58, 0x51, 0x4a, 0x43, 0x7c, 0x75, 0x6e, 0x67, 0x10, 0x19, 0x02, 0x0b,
- 0x34, 0x3d, 0x26, 0x2f, 0x73, 0x7a, 0x61, 0x68, 0x57, 0x5e, 0x45, 0x4c,
- 0x3b, 0x32, 0x29, 0x20, 0x1f, 0x16, 0x0d, 0x04, 0x6a, 0x63, 0x78, 0x71,
- 0x4e, 0x47, 0x5c, 0x55, 0x22, 0x2b, 0x30, 0x39, 0x06, 0x0f, 0x14, 0x1d,
- 0x25, 0x2c, 0x37, 0x3e, 0x01, 0x08, 0x13, 0x1a, 0x6d, 0x64, 0x7f, 0x76,
- 0x49, 0x40, 0x5b, 0x52, 0x3c, 0x35, 0x2e, 0x27, 0x18, 0x11, 0x0a, 0x03,
- 0x74, 0x7d, 0x66, 0x6f, 0x50, 0x59, 0x42, 0x4b, 0x17, 0x1e, 0x05, 0x0c,
- 0x33, 0x3a, 0x21, 0x28, 0x5f, 0x56, 0x4d, 0x44, 0x7b, 0x72, 0x69, 0x60,
- 0x0e, 0x07, 0x1c, 0x15, 0x2a, 0x23, 0x38, 0x31, 0x46, 0x4f, 0x54, 0x5d,
- 0x62, 0x6b, 0x70, 0x79
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-static bool_t mmc_read(void *instance, uint32_t startblk,
- uint8_t *buffer, uint32_t n) {
-
- if (mmcStartSequentialRead((MMCDriver *)instance, startblk))
- return CH_FAILED;
- while (n > 0) {
- if (mmcSequentialRead((MMCDriver *)instance, buffer))
- return CH_FAILED;
- buffer += MMCSD_BLOCK_SIZE;
- n--;
- }
- if (mmcStopSequentialRead((MMCDriver *)instance))
- return CH_FAILED;
- return CH_SUCCESS;
-}
-
-static bool_t mmc_write(void *instance, uint32_t startblk,
- const uint8_t *buffer, uint32_t n) {
-
- if (mmcStartSequentialWrite((MMCDriver *)instance, startblk))
- return CH_FAILED;
- while (n > 0) {
- if (mmcSequentialWrite((MMCDriver *)instance, buffer))
- return CH_FAILED;
- buffer += MMCSD_BLOCK_SIZE;
- n--;
- }
- if (mmcStopSequentialWrite((MMCDriver *)instance))
- return CH_FAILED;
- return CH_SUCCESS;
-}
-
-/**
- * @brief Calculate the MMC standard CRC-7 based on a lookup table.
- *
- * @param[in] crc start value for CRC
- * @param[in] buffer pointer to data buffer
- * @param[in] len length of data
- * @return Calculated CRC
- */
-static uint8_t crc7(uint8_t crc, const uint8_t *buffer, size_t len) {
-
- while (len--)
- crc = crc7_lookup_table[(crc << 1) ^ (*buffer++)];
- return crc;
-}
-
-/**
- * @brief Waits an idle condition.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @notapi
- */
-static void wait(MMCDriver *mmcp) {
- int i;
- uint8_t buf[4];
-
- for (i = 0; i < 16; i++) {
- spiReceive(mmcp->config->spip, 1, buf);
- if (buf[0] == 0xFF)
- return;
- }
- /* Looks like it is a long wait.*/
- while (TRUE) {
- spiReceive(mmcp->config->spip, 1, buf);
- if (buf[0] == 0xFF)
- break;
-#ifdef MMC_NICE_WAITING
- /* Trying to be nice with the other threads.*/
- chThdSleep(1);
-#endif
- }
-}
-
-/**
- * @brief Sends a command header.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] cmd the command id
- * @param[in] arg the command argument
- *
- * @notapi
- */
-static void send_hdr(MMCDriver *mmcp, uint8_t cmd, uint32_t arg) {
- uint8_t buf[6];
-
- /* Wait for the bus to become idle if a write operation was in progress.*/
- wait(mmcp);
-
- buf[0] = 0x40 | cmd;
- buf[1] = arg >> 24;
- buf[2] = arg >> 16;
- buf[3] = arg >> 8;
- buf[4] = arg;
- /* Calculate CRC for command header, shift to right position, add stop bit.*/
- buf[5] = ((crc7(0, buf, 5) & 0x7F) << 1) | 0x01;
-
- spiSend(mmcp->config->spip, 6, buf);
-}
-
-/**
- * @brief Receives a single byte response.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @return The response as an @p uint8_t value.
- * @retval 0xFF timed out.
- *
- * @notapi
- */
-static uint8_t recvr1(MMCDriver *mmcp) {
- int i;
- uint8_t r1[1];
-
- for (i = 0; i < 9; i++) {
- spiReceive(mmcp->config->spip, 1, r1);
- if (r1[0] != 0xFF)
- return r1[0];
- }
- return 0xFF;
-}
-
-/**
- * @brief Receives a three byte response.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[out] buffer pointer to four bytes wide buffer
- * @return First response byte as an @p uint8_t value.
- * @retval 0xFF timed out.
- *
- * @notapi
- */
-static uint8_t recvr3(MMCDriver *mmcp, uint8_t* buffer) {
- uint8_t r1;
-
- r1 = recvr1(mmcp);
- spiReceive(mmcp->config->spip, 4, buffer);
-
- return r1;
-}
-
-/**
- * @brief Sends a command an returns a single byte response.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] cmd the command id
- * @param[in] arg the command argument
- * @return The response as an @p uint8_t value.
- * @retval 0xFF timed out.
- *
- * @notapi
- */
-static uint8_t send_command_R1(MMCDriver *mmcp, uint8_t cmd, uint32_t arg) {
- uint8_t r1;
-
- spiSelect(mmcp->config->spip);
- send_hdr(mmcp, cmd, arg);
- r1 = recvr1(mmcp);
- spiUnselect(mmcp->config->spip);
- return r1;
-}
-
-/**
- * @brief Sends a command which returns a five bytes response (R3).
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] cmd the command id
- * @param[in] arg the command argument
- * @param[out] response pointer to four bytes wide uint8_t buffer
- * @return The first byte of the response (R1) as an @p
- * uint8_t value.
- * @retval 0xFF timed out.
- *
- * @notapi
- */
-static uint8_t send_command_R3(MMCDriver *mmcp, uint8_t cmd, uint32_t arg,
- uint8_t *response) {
- uint8_t r1;
-
- spiSelect(mmcp->config->spip);
- send_hdr(mmcp, cmd, arg);
- r1 = recvr3(mmcp, response);
- spiUnselect(mmcp->config->spip);
- return r1;
-}
-
-/**
- * @brief Reads the CSD.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[out] csd pointer to the CSD buffer
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @notapi
- */
-static bool_t read_CxD(MMCDriver *mmcp, uint8_t cmd, uint32_t cxd[4]) {
- unsigned i;
- uint8_t *bp, buf[16];
-
- spiSelect(mmcp->config->spip);
- send_hdr(mmcp, cmd, 0);
- if (recvr1(mmcp) != 0x00) {
- spiUnselect(mmcp->config->spip);
- return CH_FAILED;
- }
-
- /* Wait for data availability.*/
- for (i = 0; i < MMC_WAIT_DATA; i++) {
- spiReceive(mmcp->config->spip, 1, buf);
- if (buf[0] == 0xFE) {
- uint32_t *wp;
-
- spiReceive(mmcp->config->spip, 16, buf);
- bp = buf;
- for (wp = &cxd[3]; wp >= cxd; wp--) {
- *wp = ((uint32_t)bp[0] << 24) | ((uint32_t)bp[1] << 16) |
- ((uint32_t)bp[2] << 8) | (uint32_t)bp[3];
- bp += 4;
- }
-
- /* CRC ignored then end of transaction. */
- spiIgnore(mmcp->config->spip, 2);
- spiUnselect(mmcp->config->spip);
-
- return CH_SUCCESS;
- }
- }
- return CH_FAILED;
-}
-
-/**
- * @brief Waits that the card reaches an idle state.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @notapi
- */
-static void sync(MMCDriver *mmcp) {
- uint8_t buf[1];
-
- spiSelect(mmcp->config->spip);
- while (TRUE) {
- spiReceive(mmcp->config->spip, 1, buf);
- if (buf[0] == 0xFF)
- break;
-#ifdef MMC_NICE_WAITING
- chThdSleep(1); /* Trying to be nice with the other threads.*/
-#endif
- }
- spiUnselect(mmcp->config->spip);
-}
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief MMC over SPI driver initialization.
- * @note This function is implicitly invoked by @p halInit(), there is
- * no need to explicitly initialize the driver.
- *
- * @init
- */
-void mmcInit(void) {
-
-}
-
-/**
- * @brief Initializes an instance.
- *
- * @param[out] mmcp pointer to the @p MMCDriver object
- *
- * @init
- */
-void mmcObjectInit(MMCDriver *mmcp) {
-
- mmcp->vmt = &mmc_vmt;
- mmcp->state = BLK_STOP;
- mmcp->config = NULL;
- mmcp->block_addresses = FALSE;
-}
-
-/**
- * @brief Configures and activates the MMC peripheral.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] config pointer to the @p MMCConfig object.
- *
- * @api
- */
-void mmcStart(MMCDriver *mmcp, const MMCConfig *config) {
-
- chDbgCheck((mmcp != NULL) && (config != NULL), "mmcStart");
- chDbgAssert((mmcp->state == BLK_STOP) || (mmcp->state == BLK_ACTIVE),
- "mmcStart(), #1", "invalid state");
-
- mmcp->config = config;
- mmcp->state = BLK_ACTIVE;
-}
-
-/**
- * @brief Disables the MMC peripheral.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @api
- */
-void mmcStop(MMCDriver *mmcp) {
-
- chDbgCheck(mmcp != NULL, "mmcStop");
- chDbgAssert((mmcp->state == BLK_STOP) || (mmcp->state == BLK_ACTIVE),
- "mmcStop(), #1", "invalid state");
-
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_STOP;
-}
-
-/**
- * @brief Performs the initialization procedure on the inserted card.
- * @details This function should be invoked when a card is inserted and
- * brings the driver in the @p MMC_READY state where it is possible
- * to perform read and write operations.
- * @note It is possible to invoke this function from the insertion event
- * handler.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded and the driver is now
- * in the @p MMC_READY state.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcConnect(MMCDriver *mmcp) {
- unsigned i;
- uint8_t r3[4];
-
- chDbgCheck(mmcp != NULL, "mmcConnect");
-
- chDbgAssert((mmcp->state == BLK_ACTIVE) || (mmcp->state == BLK_READY),
- "mmcConnect(), #1", "invalid state");
-
- /* Connection procedure in progress.*/
- mmcp->state = BLK_CONNECTING;
-
- /* Slow clock mode and 128 clock pulses.*/
- spiStart(mmcp->config->spip, mmcp->config->lscfg);
- spiIgnore(mmcp->config->spip, 16);
-
- /* SPI mode selection.*/
- i = 0;
- while (TRUE) {
- if (send_command_R1(mmcp, MMCSD_CMD_GO_IDLE_STATE, 0) == 0x01)
- break;
- if (++i >= MMC_CMD0_RETRY)
- goto failed;
- chThdSleepMilliseconds(10);
- }
-
- /* Try to detect if this is a high capacity card and switch to block
- addresses if possible.
- This method is based on "How to support SDC Ver2 and high capacity cards"
- by ElmChan.*/
- if (send_command_R3(mmcp, MMCSD_CMD_SEND_IF_COND,
- MMCSD_CMD8_PATTERN, r3) != 0x05) {
-
- /* Switch to SDHC mode.*/
- i = 0;
- while (TRUE) {
- if ((send_command_R1(mmcp, MMCSD_CMD_APP_CMD, 0) == 0x01) &&
- (send_command_R3(mmcp, MMCSD_CMD_APP_OP_COND,
- 0x400001aa, r3) == 0x00))
- break;
-
- if (++i >= MMC_ACMD41_RETRY)
- goto failed;
- chThdSleepMilliseconds(10);
- }
-
- /* Execute dedicated read on OCR register */
- send_command_R3(mmcp, MMCSD_CMD_READ_OCR, 0, r3);
-
- /* Check if CCS is set in response. Card operates in block mode if set.*/
- if (r3[0] & 0x40)
- mmcp->block_addresses = TRUE;
- }
-
- /* Initialization.*/
- i = 0;
- while (TRUE) {
- uint8_t b = send_command_R1(mmcp, MMCSD_CMD_INIT, 0);
- if (b == 0x00)
- break;
- if (b != 0x01)
- goto failed;
- if (++i >= MMC_CMD1_RETRY)
- goto failed;
- chThdSleepMilliseconds(10);
- }
-
- /* Initialization complete, full speed.*/
- spiStart(mmcp->config->spip, mmcp->config->hscfg);
-
- /* Setting block size.*/
- if (send_command_R1(mmcp, MMCSD_CMD_SET_BLOCKLEN,
- MMCSD_BLOCK_SIZE) != 0x00)
- goto failed;
-
- /* Determine capacity.*/
- if (read_CxD(mmcp, MMCSD_CMD_SEND_CSD, mmcp->csd))
- goto failed;
- mmcp->capacity = mmcsdGetCapacity(mmcp->csd);
- if (mmcp->capacity == 0)
- goto failed;
-
- if (read_CxD(mmcp, MMCSD_CMD_SEND_CID, mmcp->cid))
- goto failed;
-
- mmcp->state = BLK_READY;
- return CH_SUCCESS;
-
- /* Connection failed, state reset to BLK_ACTIVE.*/
-failed:
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_ACTIVE;
- return CH_FAILED;
-}
-
-/**
- * @brief Brings the driver in a state safe for card removal.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @return The operation status.
- *
- * @retval CH_SUCCESS the operation succeeded and the driver is now
- * in the @p MMC_INSERTED state.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcDisconnect(MMCDriver *mmcp) {
-
- chDbgCheck(mmcp != NULL, "mmcDisconnect");
-
- chSysLock();
- chDbgAssert((mmcp->state == BLK_ACTIVE) || (mmcp->state == BLK_READY),
- "mmcDisconnect(), #1", "invalid state");
- if (mmcp->state == BLK_ACTIVE) {
- chSysUnlock();
- return CH_SUCCESS;
- }
- mmcp->state = BLK_DISCONNECTING;
- chSysUnlock();
-
- /* Wait for the pending write operations to complete.*/
- spiStart(mmcp->config->spip, mmcp->config->hscfg);
- sync(mmcp);
-
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_ACTIVE;
- return CH_SUCCESS;
-}
-
-/**
- * @brief Starts a sequential read.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] startblk first block to read
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcStartSequentialRead(MMCDriver *mmcp, uint32_t startblk) {
-
- chDbgCheck(mmcp != NULL, "mmcStartSequentialRead");
- chDbgAssert(mmcp->state == BLK_READY,
- "mmcStartSequentialRead(), #1", "invalid state");
-
- /* Read operation in progress.*/
- mmcp->state = BLK_READING;
-
- /* (Re)starting the SPI in case it has been reprogrammed externally, it can
- happen if the SPI bus is shared among multiple peripherals.*/
- spiStart(mmcp->config->spip, mmcp->config->hscfg);
- spiSelect(mmcp->config->spip);
-
- if (mmcp->block_addresses)
- send_hdr(mmcp, MMCSD_CMD_READ_MULTIPLE_BLOCK, startblk);
- else
- send_hdr(mmcp, MMCSD_CMD_READ_MULTIPLE_BLOCK, startblk * MMCSD_BLOCK_SIZE);
-
- if (recvr1(mmcp) != 0x00) {
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_READY;
- return CH_FAILED;
- }
- return CH_SUCCESS;
-}
-
-/**
- * @brief Reads a block within a sequential read operation.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[out] buffer pointer to the read buffer
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcSequentialRead(MMCDriver *mmcp, uint8_t *buffer) {
- int i;
-
- chDbgCheck((mmcp != NULL) && (buffer != NULL), "mmcSequentialRead");
-
- if (mmcp->state != BLK_READING)
- return CH_FAILED;
-
- for (i = 0; i < MMC_WAIT_DATA; i++) {
- spiReceive(mmcp->config->spip, 1, buffer);
- if (buffer[0] == 0xFE) {
- spiReceive(mmcp->config->spip, MMCSD_BLOCK_SIZE, buffer);
- /* CRC ignored. */
- spiIgnore(mmcp->config->spip, 2);
- return CH_SUCCESS;
- }
- }
- /* Timeout.*/
- spiUnselect(mmcp->config->spip);
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_READY;
- return CH_FAILED;
-}
-
-/**
- * @brief Stops a sequential read gracefully.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcStopSequentialRead(MMCDriver *mmcp) {
- static const uint8_t stopcmd[] = {0x40 | MMCSD_CMD_STOP_TRANSMISSION,
- 0, 0, 0, 0, 1, 0xFF};
-
- chDbgCheck(mmcp != NULL, "mmcStopSequentialRead");
-
- if (mmcp->state != BLK_READING)
- return CH_FAILED;
-
- spiSend(mmcp->config->spip, sizeof(stopcmd), stopcmd);
-/* result = recvr1(mmcp) != 0x00;*/
- /* Note, ignored r1 response, it can be not zero, unknown issue.*/
- (void) recvr1(mmcp);
-
- /* Read operation finished.*/
- spiUnselect(mmcp->config->spip);
- mmcp->state = BLK_READY;
- return CH_SUCCESS;
-}
-
-/**
- * @brief Starts a sequential write.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] startblk first block to write
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcStartSequentialWrite(MMCDriver *mmcp, uint32_t startblk) {
-
- chDbgCheck(mmcp != NULL, "mmcStartSequentialWrite");
- chDbgAssert(mmcp->state == BLK_READY,
- "mmcStartSequentialWrite(), #1", "invalid state");
-
- /* Write operation in progress.*/
- mmcp->state = BLK_WRITING;
-
- spiStart(mmcp->config->spip, mmcp->config->hscfg);
- spiSelect(mmcp->config->spip);
- if (mmcp->block_addresses)
- send_hdr(mmcp, MMCSD_CMD_WRITE_MULTIPLE_BLOCK, startblk);
- else
- send_hdr(mmcp, MMCSD_CMD_WRITE_MULTIPLE_BLOCK,
- startblk * MMCSD_BLOCK_SIZE);
-
- if (recvr1(mmcp) != 0x00) {
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_READY;
- return CH_FAILED;
- }
- return CH_SUCCESS;
-}
-
-/**
- * @brief Writes a block within a sequential write operation.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[out] buffer pointer to the write buffer
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcSequentialWrite(MMCDriver *mmcp, const uint8_t *buffer) {
- static const uint8_t start[] = {0xFF, 0xFC};
- uint8_t b[1];
-
- chDbgCheck((mmcp != NULL) && (buffer != NULL), "mmcSequentialWrite");
-
- if (mmcp->state != BLK_WRITING)
- return CH_FAILED;
-
- spiSend(mmcp->config->spip, sizeof(start), start); /* Data prologue. */
- spiSend(mmcp->config->spip, MMCSD_BLOCK_SIZE, buffer);/* Data. */
- spiIgnore(mmcp->config->spip, 2); /* CRC ignored. */
- spiReceive(mmcp->config->spip, 1, b);
- if ((b[0] & 0x1F) == 0x05) {
- wait(mmcp);
- return CH_SUCCESS;
- }
-
- /* Error.*/
- spiUnselect(mmcp->config->spip);
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_READY;
- return CH_FAILED;
-}
-
-/**
- * @brief Stops a sequential write gracefully.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcStopSequentialWrite(MMCDriver *mmcp) {
- static const uint8_t stop[] = {0xFD, 0xFF};
-
- chDbgCheck(mmcp != NULL, "mmcStopSequentialWrite");
-
- if (mmcp->state != BLK_WRITING)
- return CH_FAILED;
-
- spiSend(mmcp->config->spip, sizeof(stop), stop);
- spiUnselect(mmcp->config->spip);
-
- /* Write operation finished.*/
- mmcp->state = BLK_READY;
- return CH_SUCCESS;
-}
-
-/**
- * @brief Waits for card idle condition.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcSync(MMCDriver *mmcp) {
-
- chDbgCheck(mmcp != NULL, "mmcSync");
-
- if (mmcp->state != BLK_READY)
- return CH_FAILED;
-
- /* Synchronization operation in progress.*/
- mmcp->state = BLK_SYNCING;
-
- spiStart(mmcp->config->spip, mmcp->config->hscfg);
- sync(mmcp);
-
- /* Synchronization operation finished.*/
- mmcp->state = BLK_READY;
- return CH_SUCCESS;
-}
-
-/**
- * @brief Returns the media info.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[out] bdip pointer to a @p BlockDeviceInfo structure
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcGetInfo(MMCDriver *mmcp, BlockDeviceInfo *bdip) {
-
- chDbgCheck((mmcp != NULL) && (bdip != NULL), "mmcGetInfo");
-
- if (mmcp->state != BLK_READY)
- return CH_FAILED;
-
- bdip->blk_num = mmcp->capacity;
- bdip->blk_size = MMCSD_BLOCK_SIZE;
-
- return CH_SUCCESS;
-}
-
-/**
- * @brief Erases blocks.
- *
- * @param[in] mmcp pointer to the @p MMCDriver object
- * @param[in] startblk starting block number
- * @param[in] endblk ending block number
- *
- * @return The operation status.
- * @retval CH_SUCCESS the operation succeeded.
- * @retval CH_FAILED the operation failed.
- *
- * @api
- */
-bool_t mmcErase(MMCDriver *mmcp, uint32_t startblk, uint32_t endblk) {
-
- chDbgCheck((mmcp != NULL), "mmcErase");
-
- /* Erase operation in progress.*/
- mmcp->state = BLK_WRITING;
-
- /* Handling command differences between HC and normal cards.*/
- if (!mmcp->block_addresses) {
- startblk *= MMCSD_BLOCK_SIZE;
- endblk *= MMCSD_BLOCK_SIZE;
- }
-
- if (send_command_R1(mmcp, MMCSD_CMD_ERASE_RW_BLK_START, startblk))
- goto failed;
-
- if (send_command_R1(mmcp, MMCSD_CMD_ERASE_RW_BLK_END, endblk))
- goto failed;
-
- if (send_command_R1(mmcp, MMCSD_CMD_ERASE, 0))
- goto failed;
-
- mmcp->state = BLK_READY;
- return CH_SUCCESS;
-
- /* Command failed, state reset to BLK_ACTIVE.*/
-failed:
- spiStop(mmcp->config->spip);
- mmcp->state = BLK_READY;
- return CH_FAILED;
-}
-
-#endif /* HAL_USE_MMC_SPI */
-
-/** @} */
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