Data Structures
struct	sd_mmc_card
	SD/MMC card information structure. More...

Macros
#define	driver sd_mmc_spi

#define	driver_adtc_start ATPASTE2(driver, _adtc_start)

#define	driver_adtc_stop ATPASTE2(driver, _send_cmd)

#define	driver_deselect_device ATPASTE2(driver, _deselect_device)

#define	driver_get_bus_width ATPASTE2(driver, _get_bus_width)

#define	driver_get_response ATPASTE2(driver, _get_response)

#define	driver_get_response_128 ATPASTE2(driver, _get_response_128)

#define	driver_init ATPASTE2(driver, _init)

#define	driver_is_high_speed_capable ATPASTE2(driver, _is_high_speed_capable)

#define	driver_read_word ATPASTE2(driver, _read_word)

#define	driver_select_device ATPASTE2(driver, _select_device)

#define	driver_send_clock ATPASTE2(driver, _send_clock)

#define	driver_send_cmd ATPASTE2(driver, _send_cmd)

#define	driver_start_read_blocks ATPASTE2(driver, _start_read_blocks)

#define	driver_start_write_blocks ATPASTE2(driver, _start_write_blocks)

#define	driver_wait_end_of_read_blocks ATPASTE2(driver, _wait_end_of_read_blocks)

#define	driver_wait_end_of_write_blocks ATPASTE2(driver, _wait_end_of_write_blocks)

#define	driver_write_word ATPASTE2(driver, _write_word)

#define	IS_SDIO() false

#define	sd_mmc_debug(...)

#define	SD_MMC_HSMCI_MEM_CNT 0

#define	sd_mmc_is_mci() (!sd_mmc_is_spi())

#define	sd_mmc_is_spi() true

#define	SD_MMC_MCI_MEM_CNT 0

#define	SD_MMC_MEM_CNT SD_MMC_SPI_MEM_CNT

#define	SD_MMC_VOLTAGE_SUPPORT
	This SD MMC stack supports only the high voltage. More...

Enumerations
enum	card_state { SD_MMC_CARD_STATE_READY = 0, SD_MMC_CARD_STATE_DEBOUNCE = 1, SD_MMC_CARD_STATE_INIT = 2, SD_MMC_CARD_STATE_UNUSABLE = 3, SD_MMC_CARD_STATE_NO_CARD = 4 }
	SD/MMC card states. More...

Functions
sd_mmc_err_t	sd_mmc_check (uint8_t slot)
	Performs a card checks. More...

uint32_t	sd_mmc_get_capacity (uint8_t slot)
	Get the memory capacity. More...

card_type_t	sd_mmc_get_type (uint8_t slot)
	Get the card type. More...

card_version_t	sd_mmc_get_version (uint8_t slot)
	Get the card version. More...

void	sd_mmc_init (void)
	Initialize the SD/MMC stack and low level driver required. More...

sd_mmc_err_t	sd_mmc_init_read_blocks (uint8_t slot, uint32_t start, uint16_t nb_block)
	Initialize the read blocks of data from the card. More...

sd_mmc_err_t	sd_mmc_init_write_blocks (uint8_t slot, uint32_t start, uint16_t nb_block)
	Initialize the write blocks of data. More...

bool	sd_mmc_is_write_protected (uint8_t slot)
	Get the card write protection status. More...

uint8_t	sd_mmc_nb_slot (void)
	Return the number of slot available. More...

sd_mmc_err_t	sd_mmc_start_read_blocks (void *dest, uint16_t nb_block)
	Start the read blocks of data from the card. More...

sd_mmc_err_t	sd_mmc_start_write_blocks (const void *src, uint16_t nb_block)
	Start the write blocks of data. More...

sd_mmc_err_t	sd_mmc_wait_end_of_read_blocks (bool abort)
	Wait the end of read blocks of data from the card. More...

sd_mmc_err_t	sd_mmc_wait_end_of_write_blocks (bool abort)
	Wait the end of write blocks of data. More...

Variables
const uint32_t	mmc_trans_multipliers [16]
	MMC transfer multiplier factor codes (1/10) list. More...

static struct sd_mmc_card *	sd_mmc_card
	Pointer on current slot configurated. More...

static struct sd_mmc_card	sd_mmc_cards [SD_MMC_MEM_CNT]
	SD/MMC card list Note: Initialize card detect pin fields if present. More...

static uint16_t	sd_mmc_nb_block_remaining = 0
	Number of block remaining to read or write on the current transfer. More...

static uint16_t	sd_mmc_nb_block_to_tranfer = 0
	Number of block to read or write on the current transfer. More...

static uint8_t	sd_mmc_slot_sel
	Index of current slot configurated. More...

const uint32_t	sd_mmc_trans_units [7]
	SD/MMC transfer rate unit codes (10K) list. More...

const uint32_t	sd_trans_multipliers [16]
	SD transfer multiplier factor codes (1/10) list. More...

MMC, SD and SDIO commands process
static bool	mmc_spi_op_cond (void)
	Sends operation condition command and read OCR (SPI only) More...

static bool	mmc_mci_op_cond (void)
	Sends operation condition command and read OCR (MCI only) More...

static bool	sd_spi_op_cond (uint8_t v2)
	Ask to all cards to send their operations conditions (SPI only). More...

static bool	sd_mci_op_cond (uint8_t v2)
	Ask to all cards to send their operations conditions (MCI only). More...

static bool	sdio_op_cond (void)

static bool	sdio_get_max_speed (void)

static bool	sdio_cmd52_set_bus_width (void)

static bool	sdio_cmd52_set_high_speed (void)

static bool	sd_cm6_set_high_speed (void)
	CMD6 for SD - Switch card in high speed mode. More...

static bool	mmc_cmd6_set_bus_width (uint8_t bus_width)
	CMD6 for MMC - Switches the bus width mode. More...

static bool	mmc_cmd6_set_high_speed (void)
	CMD6 for MMC - Switches in high speed mode. More...

static bool	sd_cmd8 (uint8_t *v2)
	CMD8 for SD card - Send Interface Condition Command. More...

static bool	mmc_cmd8 (uint8_t *b_authorize_high_speed)
	CMD8 - The card sends its EXT_CSD register as a block of data. More...

static bool	sd_mmc_cmd9_spi (void)
	CMD9: Addressed card sends its card-specific data (CSD) on the CMD line spi. More...

static bool	sd_mmc_cmd9_mci (void)
	CMD9: Addressed card sends its card-specific data (CSD) on the CMD line mci. More...

static void	mmc_decode_csd (void)
	Decodes MMC CSD register. More...

static void	sd_decode_csd (void)
	Decodes SD CSD register. More...

static bool	sd_mmc_cmd13 (void)
	CMD13 - Addressed card sends its status register. More...

static bool	sd_acmd6 (void)
	ACMD6 - Define the data bus width to 4 bits bus. More...

static bool	sd_acmd51 (void)
	ACMD51 - Read the SD Configuration Register. More...

Internal function to process the initialization and install
static sd_mmc_err_t	sd_mmc_select_slot (uint8_t slot)
	Select a card slot and initialize the associated driver. More...

static void	sd_mmc_configure_slot (void)
	Configures the driver with the selected card configuration. More...

static void	sd_mmc_deselect_slot (void)
	Deselect the current card slot. More...

static bool	sd_mmc_spi_card_init (void)
	Initialize the SD card in SPI mode. More...

static bool	sd_mmc_mci_card_init (void)
	Initialize the SD card in MCI mode. More...

static bool	sd_mmc_spi_install_mmc (void)
	Initialize the MMC card in SPI mode. More...

static bool	sd_mmc_mci_install_mmc (void)
	Initialize the MMC card in MCI mode. More...

Internal functions to manage a large timeout after a card insertion
#define	SD_MMC_DEBOUNCE_TIMEOUT 1000

#define driver sd_mmc_spi

#define driver_adtc_start ATPASTE2(driver, _adtc_start)

Referenced by mmc_cmd8(), sd_acmd51(), sd_cm6_set_high_speed(), sd_mmc_cmd9_spi(), sd_mmc_init_read_blocks(), and sd_mmc_init_write_blocks().

#define driver_adtc_stop ATPASTE2(driver, _send_cmd)

Referenced by sd_mmc_wait_end_of_read_blocks(), and sd_mmc_wait_end_of_write_blocks().

#define driver_deselect_device ATPASTE2(driver, _deselect_device)

Referenced by sd_mmc_deselect_slot().

#define driver_get_bus_width ATPASTE2(driver, _get_bus_width)

Referenced by sd_mmc_mci_card_init(), and sd_mmc_mci_install_mmc().

#define driver_get_response ATPASTE2(driver, _get_response)

Referenced by mmc_cmd6_set_bus_width(), mmc_cmd6_set_high_speed(), mmc_mci_op_cond(), mmc_spi_op_cond(), sd_cm6_set_high_speed(), sd_cmd8(), sd_mci_op_cond(), sd_mmc_cmd13(), sd_mmc_init_read_blocks(), sd_mmc_init_write_blocks(), sd_mmc_mci_card_init(), and sd_spi_op_cond().

#define driver_get_response_128 ATPASTE2(driver, _get_response_128)

Referenced by sd_mmc_cmd9_mci().

#define driver_init ATPASTE2(driver, _init)

Referenced by sd_mmc_init().

#define driver_is_high_speed_capable ATPASTE2(driver, _is_high_speed_capable)

Referenced by sd_mmc_mci_card_init(), and sd_mmc_mci_install_mmc().

#define driver_read_word ATPASTE2(driver, _read_word)

Referenced by mmc_cmd8().

#define driver_select_device ATPASTE2(driver, _select_device)

Referenced by sd_mmc_configure_slot().

#define driver_send_clock ATPASTE2(driver, _send_clock)

Referenced by sd_cm6_set_high_speed(), sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

#define driver_send_cmd ATPASTE2(driver, _send_cmd)

Referenced by mmc_cmd6_set_bus_width(), mmc_cmd6_set_high_speed(), mmc_mci_op_cond(), mmc_spi_op_cond(), sd_acmd51(), sd_acmd6(), sd_cmd8(), sd_mci_op_cond(), sd_mmc_cmd13(), sd_mmc_cmd9_mci(), sd_mmc_mci_card_init(), sd_mmc_mci_install_mmc(), sd_mmc_spi_card_init(), sd_mmc_spi_install_mmc(), and sd_spi_op_cond().

#define driver_start_read_blocks ATPASTE2(driver, _start_read_blocks)

Referenced by sd_acmd51(), sd_cm6_set_high_speed(), sd_mmc_cmd9_spi(), and sd_mmc_start_read_blocks().

#define driver_start_write_blocks ATPASTE2(driver, _start_write_blocks)

Referenced by sd_mmc_start_write_blocks().

#define driver_wait_end_of_read_blocks ATPASTE2(driver, _wait_end_of_read_blocks)

Referenced by sd_acmd51(), sd_cm6_set_high_speed(), sd_mmc_cmd9_spi(), and sd_mmc_wait_end_of_read_blocks().

#define driver_wait_end_of_write_blocks ATPASTE2(driver, _wait_end_of_write_blocks)

Referenced by sd_mmc_wait_end_of_write_blocks().

#define driver_write_word ATPASTE2(driver, _write_word)

#define IS_SDIO ( ) false

Referenced by sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

#define SD_MMC_DEBOUNCE_TIMEOUT 1000

#define sd_mmc_debug ( ... )

Referenced by mmc_cmd6_set_bus_width(), mmc_cmd6_set_high_speed(), mmc_mci_op_cond(), mmc_spi_op_cond(), sd_acmd6(), sd_cm6_set_high_speed(), sd_cmd8(), sd_mci_op_cond(), sd_mmc_check(), sd_mmc_cmd13(), sd_mmc_init_read_blocks(), sd_mmc_init_write_blocks(), sd_mmc_mci_card_init(), sd_mmc_spi_card_init(), and sd_spi_op_cond().

#define SD_MMC_HSMCI_MEM_CNT 0

#define sd_mmc_is_mci ( ) (!sd_mmc_is_spi())

Referenced by sd_mmc_init_read_blocks(), sd_mmc_init_write_blocks(), and sd_mmc_wait_end_of_write_blocks().

#define sd_mmc_is_spi ( ) true

Referenced by sd_mmc_check(), and sd_mmc_cmd13().

#define SD_MMC_MCI_MEM_CNT 0

#define SD_MMC_MEM_CNT SD_MMC_SPI_MEM_CNT

Referenced by sd_mmc_deselect_slot(), sd_mmc_init(), sd_mmc_nb_slot(), and sd_mmc_select_slot().

#define SD_MMC_VOLTAGE_SUPPORT

Value:

(OCR_VDD_27_28 | OCR_VDD_28_29 | \
		OCR_VDD_29_30 | OCR_VDD_30_31 | \
		OCR_VDD_31_32 | OCR_VDD_32_33)

This SD MMC stack supports only the high voltage.

Referenced by mmc_mci_op_cond(), and sd_mci_op_cond().

enum card_state

SD/MMC card states.

Enumerator
SD_MMC_CARD_STATE_READY	Ready to use.
SD_MMC_CARD_STATE_DEBOUNCE	Debounce on going.
SD_MMC_CARD_STATE_INIT	Initialization on going.
SD_MMC_CARD_STATE_UNUSABLE	Unusable card.
SD_MMC_CARD_STATE_NO_CARD	No SD/MMC card inserted.

static bool mmc_cmd6_set_bus_width ( uint8_t bus_width )

static

CMD6 for MMC - Switches the bus width mode.

Note: CMD6 is valid under the "trans" state.; sd_mmc_card->bus_width is updated.

Parameters

bus_width Bus width to set

Returns: true if success, otherwise false

References sd_mmc_card::bus_width, CARD_STATUS_SWITCH_ERROR, driver_get_response, driver_send_cmd, MMC_CMD6_ACCESS_SET_BITS, MMC_CMD6_INDEX_BUS_WIDTH, MMC_CMD6_SWITCH, MMC_CMD6_VALUE_BUS_WIDTH_1BIT, MMC_CMD6_VALUE_BUS_WIDTH_4BIT, MMC_CMD6_VALUE_BUS_WIDTH_8BIT, and sd_mmc_debug.

Referenced by sd_mmc_mci_install_mmc().

static bool mmc_cmd6_set_high_speed ( void )

static

CMD6 for MMC - Switches in high speed mode.

Note: CMD6 is valid under the "trans" state.; sd_mmc_card->high_speed is updated.; sd_mmc_card->clock is updated.

Returns: true if success, otherwise false

References CARD_STATUS_SWITCH_ERROR, sd_mmc_card::clock, driver_get_response, driver_send_cmd, sd_mmc_card::high_speed, MMC_CMD6_ACCESS_WRITE_BYTE, MMC_CMD6_INDEX_HS_TIMING, MMC_CMD6_SWITCH, MMC_CMD6_VALUE_HS_TIMING_ENABLE, and sd_mmc_debug.

Referenced by sd_mmc_mci_install_mmc().

static bool mmc_cmd8 ( uint8_t * b_authorize_high_speed )

static

CMD8 - The card sends its EXT_CSD register as a block of data.

Parameters

b_authorize_high_speed Pointer to update with the high speed support information

Returns: true if success, otherwise false

References sd_mmc_card::capacity, sd_mmc_card::csd, driver_adtc_start, driver_read_word, EXT_CSD_BSIZE, EXT_CSD_CARD_TYPE_INDEX, EXT_CSD_SEC_COUNT_INDEX, MMC_CMD8_SEND_EXT_CSD, MMC_CSD_C_SIZE, and MMC_CTYPE_52MHZ.

Referenced by sd_mmc_mci_install_mmc(), and sd_mmc_spi_install_mmc().

static void mmc_decode_csd ( void )

static

Decodes MMC CSD register.

References sd_mmc_card::capacity, CARD_VER_MMC_1_2, CARD_VER_MMC_1_4, CARD_VER_MMC_2_2, CARD_VER_MMC_3, CARD_VER_MMC_4, sd_mmc_card::clock, sd_mmc_card::csd, CSD_TRAN_SPEED, MMC_CSD_C_SIZE, MMC_CSD_C_SIZE_MULT, MMC_CSD_READ_BL_LEN, MMC_CSD_SPEC_VERS, mmc_trans_multipliers, sd_mmc_trans_units, and sd_mmc_card::version.

Referenced by sd_mmc_mci_install_mmc(), and sd_mmc_spi_install_mmc().

static bool mmc_mci_op_cond ( void )

static

Sends operation condition command and read OCR (MCI only)

CMD1 sends operation condition command
CMD1 reads OCR

Returns: true if success, otherwise false

References CARD_TYPE_HC, driver_get_response, driver_send_cmd, MMC_MCI_CMD1_SEND_OP_COND, OCR_ACCESS_MODE_MASK, OCR_ACCESS_MODE_SECTOR, OCR_POWER_UP_BUSY, sd_mmc_debug, SD_MMC_VOLTAGE_SUPPORT, and sd_mmc_card::type.

Referenced by sd_mmc_mci_install_mmc().

static bool mmc_spi_op_cond ( void )

static

Sends operation condition command and read OCR (SPI only)

CMD1 sends operation condition command
CMD58 reads OCR

Returns: true if success, otherwise false

References CARD_TYPE_HC, driver_get_response, driver_send_cmd, MMC_SPI_CMD1_SEND_OP_COND, OCR_ACCESS_MODE_MASK, OCR_ACCESS_MODE_SECTOR, R1_SPI_IDLE, sd_mmc_debug, SDMMC_SPI_CMD58_READ_OCR, and sd_mmc_card::type.

Referenced by sd_mmc_spi_install_mmc().

static bool sd_acmd51 ( void )

static

ACMD51 - Read the SD Configuration Register.

Note: SD Card Configuration Register (SCR) provides information on the SD Memory Card's special features that were configured into the given card. The size of SCR register is 64 bits.

Returns: true if success, otherwise false

References CARD_VER_SD_1_0, CARD_VER_SD_1_10, CARD_VER_SD_2_0, CARD_VER_SD_3_0, driver_adtc_start, driver_send_cmd, driver_start_read_blocks, driver_wait_end_of_read_blocks, sd_mmc_card::rca, SD_ACMD51_SEND_SCR, SD_SCR_REG_BSIZE, SD_SCR_SD_SPEC, SD_SCR_SD_SPEC3, SD_SCR_SD_SPEC_1_0_01, SD_SCR_SD_SPEC_1_10, SD_SCR_SD_SPEC_2_00, SD_SCR_SD_SPEC_3_00, SDMMC_CMD55_APP_CMD, and sd_mmc_card::version.

Referenced by sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

static bool sd_acmd6 ( void )

static

ACMD6 - Define the data bus width to 4 bits bus.

Returns: true if success, otherwise false

References sd_mmc_card::bus_width, driver_send_cmd, sd_mmc_card::rca, SD_ACMD6_SET_BUS_WIDTH, sd_mmc_debug, and SDMMC_CMD55_APP_CMD.

Referenced by sd_mmc_mci_card_init().

static bool sd_cm6_set_high_speed ( void )

static

CMD6 for SD - Switch card in high speed mode.

Note: CMD6 for SD is valid under the "trans" state.; sd_mmc_card->high_speed is updated.; sd_mmc_card->clock is updated.

Returns: true if success, otherwise false

References CARD_STATUS_SWITCH_ERROR, sd_mmc_card::clock, driver_adtc_start, driver_get_response, driver_send_clock, driver_start_read_blocks, driver_wait_end_of_read_blocks, sd_mmc_card::high_speed, SD_CMD6_GRP1_HIGH_SPEED, SD_CMD6_GRP2_DEFAULT, SD_CMD6_GRP3_NO_INFLUENCE, SD_CMD6_GRP4_NO_INFLUENCE, SD_CMD6_GRP5_NO_INFLUENCE, SD_CMD6_GRP6_NO_INFLUENCE, SD_CMD6_MODE_SWITCH, SD_CMD6_SWITCH_FUNC, sd_mmc_debug, SD_SW_STATUS_BSIZE, SD_SW_STATUS_FUN_GRP1_BUSY, SD_SW_STATUS_FUN_GRP1_RC, and SD_SW_STATUS_FUN_GRP_RC_ERROR.

Referenced by sd_mmc_mci_card_init().

static bool sd_cmd8 ( uint8_t * v2 )

static

CMD8 for SD card - Send Interface Condition Command.

Note: Send SD Memory Card interface condition, which includes host supply voltage information and asks the card whether card supports voltage. Should be performed at initialization time to detect the card type.

Parameters

v2	Pointer to v2 flag to update

Returns: true if success, otherwise false with a update of sd_mmc_err.

References driver_get_response, driver_send_cmd, SD_CMD8_HIGH_VOLTAGE, SD_CMD8_MASK_PATTERN, SD_CMD8_MASK_VOLTAGE, SD_CMD8_PATTERN, SD_CMD8_SEND_IF_COND, and sd_mmc_debug.

Referenced by sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

static void sd_decode_csd ( void )

static

Decodes SD CSD register.

References sd_mmc_card::capacity, sd_mmc_card::clock, sd_mmc_card::csd, CSD_STRUCTURE_VERSION, CSD_TRAN_SPEED, SD_CSD_1_0_C_SIZE, SD_CSD_1_0_C_SIZE_MULT, SD_CSD_1_0_READ_BL_LEN, SD_CSD_2_0_C_SIZE, SD_CSD_VER_2_0, sd_mmc_trans_units, and sd_trans_multipliers.

Referenced by sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

static bool sd_mci_op_cond ( uint8_t v2 )

static

Ask to all cards to send their operations conditions (MCI only).

ACMD41 sends operation condition command.
ACMD41 reads OCR

Parameters

v2	Shall be 1 if it is a SD card V2

Returns: true if success, otherwise false

References CARD_TYPE_HC, driver_get_response, driver_send_cmd, OCR_CCS, OCR_POWER_UP_BUSY, SD_ACMD41_HCS, SD_MCI_ACMD41_SD_SEND_OP_COND, sd_mmc_debug, SD_MMC_VOLTAGE_SUPPORT, SDMMC_CMD55_APP_CMD, and sd_mmc_card::type.

Referenced by sd_mmc_mci_card_init().

sd_mmc_err_t sd_mmc_check ( uint8_t slot )

Performs a card checks.

Parameters

slot	Card slot to use

Return values

SD_MMC_OK	Card ready
SD_MMC_INIT_ONGOING	Initialization on going
SD_MMC_ERR_NO_CARD	Card not present in slot
Other	value for error cases, see sd_mmc_err_t

References SD_MMC_CARD_STATE_READY, SD_MMC_CARD_STATE_UNUSABLE, sd_mmc_debug, sd_mmc_deselect_slot(), SD_MMC_ERR_UNUSABLE, SD_MMC_INIT_ONGOING, sd_mmc_is_spi, sd_mmc_mci_card_init(), sd_mmc_select_slot(), sd_mmc_spi_card_init(), and sd_mmc_card::state.

Referenced by _sd_init(), and sd_mmc_test_unit_ready().

static bool sd_mmc_cmd13 ( void )

static

CMD13 - Addressed card sends its status register.

This function waits the clear of the busy flag

Returns: true if success, otherwise false

References CARD_STATUS_READY_FOR_DATA, driver_get_response, driver_send_cmd, sd_mmc_card::rca, sd_mmc_debug, sd_mmc_is_spi, SDMMC_MCI_CMD13_SEND_STATUS, and SDMMC_SPI_CMD13_SEND_STATUS.

Referenced by sd_mmc_init_read_blocks(), sd_mmc_spi_card_init(), and sd_mmc_spi_install_mmc().

static bool sd_mmc_cmd9_mci ( void )

static

CMD9: Addressed card sends its card-specific data (CSD) on the CMD line mci.

Returns: true if success, otherwise false

References sd_mmc_card::csd, driver_get_response_128, driver_send_cmd, sd_mmc_card::rca, and SDMMC_MCI_CMD9_SEND_CSD.

Referenced by sd_mmc_mci_card_init(), and sd_mmc_mci_install_mmc().

static bool sd_mmc_cmd9_spi ( void )

static

CMD9: Addressed card sends its card-specific data (CSD) on the CMD line spi.

Returns: true if success, otherwise false

References sd_mmc_card::csd, CSD_REG_BSIZE, driver_adtc_start, driver_start_read_blocks, driver_wait_end_of_read_blocks, sd_mmc_card::rca, and SDMMC_SPI_CMD9_SEND_CSD.

Referenced by sd_mmc_spi_card_init(), and sd_mmc_spi_install_mmc().

static void sd_mmc_configure_slot ( void )

static

Configures the driver with the selected card configuration.

References sd_mmc_card::bus_width, sd_mmc_card::clock, driver_select_device, sd_mmc_card::high_speed, and sd_mmc_slot_sel.

Referenced by sd_mmc_mci_card_init(), sd_mmc_mci_install_mmc(), sd_mmc_select_slot(), sd_mmc_spi_card_init(), and sd_mmc_spi_install_mmc().

static void sd_mmc_deselect_slot ( void )

static

Deselect the current card slot.

References driver_deselect_device, SD_MMC_MEM_CNT, and sd_mmc_slot_sel.

Referenced by sd_mmc_check(), sd_mmc_get_capacity(), sd_mmc_get_type(), sd_mmc_get_version(), sd_mmc_init_read_blocks(), sd_mmc_init_write_blocks(), sd_mmc_wait_end_of_read_blocks(), and sd_mmc_wait_end_of_write_blocks().

uint32_t sd_mmc_get_capacity ( uint8_t slot )

Get the memory capacity.

Parameters

slot Card slot

Returns: Capacity (unit KB)

References sd_mmc_card::capacity, sd_mmc_deselect_slot(), SD_MMC_OK, and sd_mmc_select_slot().

Referenced by sd_mmc_read_capacity().

card_type_t sd_mmc_get_type ( uint8_t slot )

Get the card type.

Parameters

slot Card slot

Returns: Card type (card_type_t)

References CARD_TYPE_UNKNOWN, sd_mmc_deselect_slot(), SD_MMC_OK, sd_mmc_select_slot(), and sd_mmc_card::type.

Referenced by sd_mmc_test_unit_ready().

card_version_t sd_mmc_get_version ( uint8_t slot )

Get the card version.

Parameters

slot Card slot

Returns: Card version (card_version_t)

References CARD_VER_UNKNOWN, sd_mmc_deselect_slot(), SD_MMC_OK, sd_mmc_select_slot(), and sd_mmc_card::version.

void sd_mmc_init ( void )

Initialize the SD/MMC stack and low level driver required.

Enable the PMC clock for the card detect pins

Enable the PMC clock for the card write protection pins

References driver_init, MREPEAT, SD_MMC_CARD_STATE_NO_CARD, sd_mmc_cards, SD_MMC_MEM_CNT, sd_mmc_slot_sel, and sd_mmc_card::state.

Referenced by _sd_init().

sd_mmc_err_t sd_mmc_init_read_blocks	(	uint8_t	slot,
		uint32_t	start,
		uint16_t	nb_block
	)

Initialize the read blocks of data from the card.

Parameters

slot	Card slot to use
start	Start block number to to read.
nb_block	Total number of blocks to be read.

Returns: return SD_MMC_OK if success, otherwise return an error code (sd_mmc_err_t).

References CARD_STATUS_ERR_RD_WR, CARD_TYPE_HC, driver_adtc_start, driver_get_response, SD_MMC_BLOCK_SIZE, sd_mmc_cmd13(), sd_mmc_debug, sd_mmc_deselect_slot(), SD_MMC_ERR_COMM, sd_mmc_is_mci, sd_mmc_nb_block_remaining, sd_mmc_nb_block_to_tranfer, SD_MMC_OK, sd_mmc_select_slot(), SDMMC_CMD17_READ_SINGLE_BLOCK, SDMMC_CMD18_READ_MULTIPLE_BLOCK, SDMMC_CMD_GET_INDEX, and sd_mmc_card::type.

sd_mmc_err_t sd_mmc_init_write_blocks	(	uint8_t	slot,
		uint32_t	start,
		uint16_t	nb_block
	)

Initialize the write blocks of data.

Parameters

slot	Card slot to use
start	Start block number to be written.
nb_block	Total number of blocks to be written.

Returns: return SD_MMC_OK if success, otherwise return an error code (sd_mmc_err_t).

References CARD_STATUS_ERR_RD_WR, CARD_TYPE_HC, driver_adtc_start, driver_get_response, SD_MMC_BLOCK_SIZE, sd_mmc_debug, sd_mmc_deselect_slot(), SD_MMC_ERR_COMM, SD_MMC_ERR_WP, sd_mmc_is_mci, sd_mmc_is_write_protected(), sd_mmc_nb_block_remaining, sd_mmc_nb_block_to_tranfer, SD_MMC_OK, sd_mmc_select_slot(), SDMMC_CMD24_WRITE_BLOCK, SDMMC_CMD25_WRITE_MULTIPLE_BLOCK, SDMMC_CMD_GET_INDEX, and sd_mmc_card::type.

bool sd_mmc_is_write_protected ( uint8_t slot )

Get the card write protection status.

Parameters

slot Card slot

Returns: true, if write portected

References port_pin_get_input_level(), sd_mmc_cards, and UNUSED.

Referenced by sd_mmc_init_write_blocks(), and sd_mmc_wr_protect().

static bool sd_mmc_mci_card_init ( void )

static

Initialize the SD card in MCI mode.

Note: This function runs the initialization procedure and the identification process, then it sets the SD/MMC card in transfer state. At last, it will automaticly enable maximum bus width and transfer speed.

Returns: true if success, otherwise false

References CARD_TYPE_MMC, CARD_TYPE_SD, CARD_VER_SD_1_0, CARD_VER_UNKNOWN, driver_get_bus_width, driver_get_response, driver_is_high_speed_capable, driver_send_clock, driver_send_cmd, IS_SDIO, sd_mmc_card::rca, sd_acmd51(), sd_acmd6(), sd_cm6_set_high_speed(), SD_CMD3_SEND_RELATIVE_ADDR, sd_cmd8(), sd_decode_csd(), sd_mci_op_cond(), SD_MMC_BLOCK_SIZE, sd_mmc_cmd9_mci(), sd_mmc_configure_slot(), sd_mmc_debug, sd_mmc_mci_install_mmc(), sd_mmc_slot_sel, sdio_cmd52_set_bus_width(), sdio_cmd52_set_high_speed(), sdio_get_max_speed(), sdio_op_cond(), SDMMC_CMD16_SET_BLOCKLEN, SDMMC_CMD2_ALL_SEND_CID, SDMMC_CMD7_SELECT_CARD_CMD, SDMMC_MCI_CMD0_GO_IDLE_STATE, sd_mmc_card::type, and sd_mmc_card::version.

Referenced by sd_mmc_check().

static bool sd_mmc_mci_install_mmc ( void )

static

Initialize the MMC card in MCI mode.

Note: This function runs the initialization procedure and the identification process, then it sets the SD/MMC card in transfer state. At last, it will automaticly enable maximum bus width and transfer speed.

Returns: true if success, otherwise false

References CARD_VER_MMC_4, driver_get_bus_width, driver_is_high_speed_capable, driver_send_cmd, MMC_CMD3_SET_RELATIVE_ADDR, mmc_cmd6_set_bus_width(), mmc_cmd6_set_high_speed(), mmc_cmd8(), mmc_decode_csd(), mmc_mci_op_cond(), sd_mmc_card::rca, SD_MMC_BLOCK_SIZE, sd_mmc_cmd9_mci(), sd_mmc_configure_slot(), sd_mmc_slot_sel, SDMMC_CMD16_SET_BLOCKLEN, SDMMC_CMD2_ALL_SEND_CID, SDMMC_CMD7_SELECT_CARD_CMD, SDMMC_MCI_CMD0_GO_IDLE_STATE, and sd_mmc_card::version.

Referenced by sd_mmc_mci_card_init().

uint8_t sd_mmc_nb_slot ( void )

Return the number of slot available.

Returns: Number of card slot available

References SD_MMC_MEM_CNT.

static sd_mmc_err_t sd_mmc_select_slot ( uint8_t slot )

static

Select a card slot and initialize the associated driver.

Parameters

slot	Card slot number

Return values

SD_MMC_ERR_SLOT	Wrong slot number
SD_MMC_ERR_NO_CARD	No card present on slot
SD_MMC_ERR_UNUSABLE	Unusable card
SD_MMC_INIT_ONGOING	Card initialization requested
SD_MMC_OK	Card present

Card Detect pins

References Assert, sd_mmc_card::bus_width, sd_mmc_card::cd_gpio, sd_mmc_card::clock, sd_mmc_card::high_speed, port_pin_get_input_level(), SD_MMC_0_CD_DETECT_VALUE, SD_MMC_CARD_STATE_DEBOUNCE, SD_MMC_CARD_STATE_INIT, SD_MMC_CARD_STATE_NO_CARD, SD_MMC_CARD_STATE_UNUSABLE, sd_mmc_cards, sd_mmc_configure_slot(), SD_MMC_ERR_NO_CARD, SD_MMC_ERR_SLOT, SD_MMC_ERR_UNUSABLE, SD_MMC_INIT_ONGOING, SD_MMC_MEM_CNT, sd_mmc_nb_block_remaining, SD_MMC_OK, sd_mmc_slot_sel, SDMMC_CLOCK_INIT, and sd_mmc_card::state.

Referenced by sd_mmc_check(), sd_mmc_get_capacity(), sd_mmc_get_type(), sd_mmc_get_version(), sd_mmc_init_read_blocks(), and sd_mmc_init_write_blocks().

static bool sd_mmc_spi_card_init ( void )

static

Initialize the SD card in SPI mode.

Note: This function runs the initialization procedure and the identification process, then it sets the SD/MMC card in transfer state. At last, it will automaticly enable maximum bus width and transfer speed.

Returns: true if success, otherwise false

References CARD_TYPE_HC, CARD_TYPE_MMC, CARD_TYPE_SD, CARD_VER_UNKNOWN, driver_send_clock, driver_send_cmd, IS_SDIO, sd_mmc_card::rca, sd_acmd51(), sd_cmd8(), sd_decode_csd(), SD_MMC_BLOCK_SIZE, sd_mmc_cmd13(), sd_mmc_cmd9_spi(), sd_mmc_configure_slot(), sd_mmc_debug, sd_mmc_spi_install_mmc(), sd_spi_op_cond(), sdio_get_max_speed(), sdio_op_cond(), SDMMC_CMD16_SET_BLOCKLEN, SDMMC_SPI_CMD0_GO_IDLE_STATE, SDMMC_SPI_CMD59_CRC_ON_OFF, sd_mmc_card::type, and sd_mmc_card::version.

Referenced by sd_mmc_check().

static bool sd_mmc_spi_install_mmc ( void )

static

Initialize the MMC card in SPI mode.

Note: This function runs the initialization procedure and the identification process, then it sets the SD/MMC card in transfer state. At last, it will automaticly enable maximum bus width and transfer speed.

Returns: true if success, otherwise false

References CARD_VER_MMC_4, driver_send_cmd, mmc_cmd8(), mmc_decode_csd(), mmc_spi_op_cond(), SD_MMC_BLOCK_SIZE, sd_mmc_cmd13(), sd_mmc_cmd9_spi(), sd_mmc_configure_slot(), SDMMC_CMD16_SET_BLOCKLEN, SDMMC_SPI_CMD0_GO_IDLE_STATE, SDMMC_SPI_CMD59_CRC_ON_OFF, and sd_mmc_card::version.

Referenced by sd_mmc_spi_card_init().

sd_mmc_err_t sd_mmc_start_read_blocks	(	void *	dest,
		uint16_t	nb_block
	)

Start the read blocks of data from the card.

Parameters

dest	Pointer to read buffer.
nb_block	Number of blocks to be read.

Returns: return SD_MMC_OK if started, otherwise return an error code (sd_mmc_err_t).

References Assert, driver_start_read_blocks, SD_MMC_ERR_COMM, sd_mmc_nb_block_remaining, and SD_MMC_OK.

sd_mmc_err_t sd_mmc_start_write_blocks	(	const void *	src,
		uint16_t	nb_block
	)

Start the write blocks of data.

Parameters

src	Pointer to write buffer.
nb_block	Number of blocks to be written.

Returns: return SD_MMC_OK if started, otherwise return an error code (sd_mmc_err_t).

References Assert, driver_start_write_blocks, SD_MMC_ERR_COMM, sd_mmc_nb_block_remaining, and SD_MMC_OK.

sd_mmc_err_t sd_mmc_wait_end_of_read_blocks ( bool abort )

Wait the end of read blocks of data from the card.

Parameters

abort Abort reading process initialized by sd_mmc_init_read_blocks() after the reading issued by sd_mmc_start_read_blocks() is done

Returns: return SD_MMC_OK if success, otherwise return an error code (sd_mmc_err_t).

References driver_adtc_stop, driver_wait_end_of_read_blocks, sd_mmc_deselect_slot(), SD_MMC_ERR_COMM, sd_mmc_nb_block_remaining, sd_mmc_nb_block_to_tranfer, SD_MMC_OK, and SDMMC_CMD12_STOP_TRANSMISSION.

sd_mmc_err_t sd_mmc_wait_end_of_write_blocks ( bool abort )

Wait the end of write blocks of data.

Parameters

abort Abort writing process initialized by sd_mmc_init_write_blocks() after the writing issued by sd_mmc_start_write_blocks() is done

Returns: return SD_MMC_OK if success, otherwise return an error code (sd_mmc_err_t).

References driver_adtc_stop, driver_wait_end_of_write_blocks, sd_mmc_deselect_slot(), SD_MMC_ERR_COMM, sd_mmc_is_mci, sd_mmc_nb_block_remaining, sd_mmc_nb_block_to_tranfer, SD_MMC_OK, and SDMMC_CMD12_STOP_TRANSMISSION.

static bool sd_spi_op_cond ( uint8_t v2 )

static

Ask to all cards to send their operations conditions (SPI only).

ACMD41 sends operation condition command.
CMD58 reads OCR

Parameters

v2	Shall be 1 if it is a SD card V2

Returns: true if success, otherwise false

References CARD_TYPE_HC, driver_get_response, driver_send_cmd, OCR_CCS, R1_SPI_IDLE, SD_ACMD41_HCS, sd_mmc_debug, SD_SPI_ACMD41_SD_SEND_OP_COND, SDMMC_CMD55_APP_CMD, SDMMC_SPI_CMD58_READ_OCR, and sd_mmc_card::type.

Referenced by sd_mmc_spi_card_init().

static bool sdio_cmd52_set_bus_width ( void )

static

Referenced by sd_mmc_mci_card_init().

static bool sdio_cmd52_set_high_speed ( void )

static

Referenced by sd_mmc_mci_card_init().

static bool sdio_get_max_speed ( void )

static

Referenced by sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

static bool sdio_op_cond ( void )

static

Referenced by sd_mmc_mci_card_init(), and sd_mmc_spi_card_init().

const uint32_t mmc_trans_multipliers[16]

Initial value:

= {
    0, 10, 12, 13, 15, 20, 26, 30, 35, 40, 45, 52, 55, 60, 70, 80
}

MMC transfer multiplier factor codes (1/10) list.

Referenced by mmc_decode_csd().

struct sd_mmc_card* sd_mmc_card

static

Pointer on current slot configurated.

struct sd_mmc_card sd_mmc_cards[SD_MMC_MEM_CNT]

static

Initial value:

= {
#define SD_MMC_CD(slot, unused) 
}

SD/MMC card list Note: Initialize card detect pin fields if present.

Referenced by sd_mmc_init(), sd_mmc_is_write_protected(), and sd_mmc_select_slot().

uint16_t sd_mmc_nb_block_remaining = 0

static

Number of block remaining to read or write on the current transfer.

Referenced by sd_mmc_init_read_blocks(), sd_mmc_init_write_blocks(), sd_mmc_select_slot(), sd_mmc_start_read_blocks(), sd_mmc_start_write_blocks(), sd_mmc_wait_end_of_read_blocks(), and sd_mmc_wait_end_of_write_blocks().

uint16_t sd_mmc_nb_block_to_tranfer = 0

static

Number of block to read or write on the current transfer.

Referenced by sd_mmc_init_read_blocks(), sd_mmc_init_write_blocks(), sd_mmc_wait_end_of_read_blocks(), and sd_mmc_wait_end_of_write_blocks().

uint8_t sd_mmc_slot_sel

static

Index of current slot configurated.

Referenced by sd_mmc_configure_slot(), sd_mmc_deselect_slot(), sd_mmc_init(), sd_mmc_mci_card_init(), sd_mmc_mci_install_mmc(), and sd_mmc_select_slot().

const uint32_t sd_mmc_trans_units[7]

Initial value:

= {
    10, 100, 1000, 10000, 0, 0, 0
}

SD/MMC transfer rate unit codes (10K) list.

Referenced by mmc_decode_csd(), and sd_decode_csd().

const uint32_t sd_trans_multipliers[16]

Initial value:

= {
    0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
}

SD transfer multiplier factor codes (1/10) list.

Referenced by sd_decode_csd().

Microchip® Advanced Software Framework

Data Structures

Macros

Enumerations

Functions

Variables

MMC, SD and SDIO commands process

Internal function to process the initialization and install

Internal functions to manage a large timeout after a card insertion