Collaboration diagram for High Speed MultiMedia Card Interface:

Macros
#define	hsmci_debug(...)

#define	SD_MMC_HSMCI_MEM_CNT 1

#define	SD_MMC_HSMCI_SLOT_0_SIZE 1

Functions
bool	hsmci_adtc_start (sdmmc_cmd_def_t cmd, uint32_t arg, uint16_t block_size, uint16_t nb_block, bool access_block)
	Send an ADTC command on the selected slot An ADTC (Addressed Data Transfer Commands) command is used for read/write access. More...

bool	hsmci_adtc_stop (sdmmc_cmd_def_t cmd, uint32_t arg)
	Send a command to stop an ADTC command on the selected slot. More...

void	hsmci_deselect_device (uint8_t slot)
	Deselect a slot. More...

uint8_t	hsmci_get_bus_width (uint8_t slot)
	Return the maximum bus width of a slot. More...

uint32_t	hsmci_get_response (void)
	Return the 32 bits response of the last command. More...

void	hsmci_get_response_128 (uint8_t *response)
	Return the 128 bits response of the last command. More...

void	hsmci_init (void)
	Initializes the low level driver. More...

bool	hsmci_is_high_speed_capable (void)
	Return the high speed capability of the driver. More...

bool	hsmci_read_word (uint32_t *value)
	Read a word on the line. More...

static void	hsmci_reset (void)
	Reset the HSMCI interface. More...

void	hsmci_select_device (uint8_t slot, uint32_t clock, uint8_t bus_width, bool high_speed)
	Select a slot and initialize it. More...

void	hsmci_send_clock (void)
	Send 74 clock cycles on the line of selected slot Note: It is required after card plug and before card install. More...

bool	hsmci_send_cmd (sdmmc_cmd_def_t cmd, uint32_t arg)
	Send a command on the selected slot. More...

static bool	hsmci_send_cmd_execute (uint32_t cmdr, sdmmc_cmd_def_t cmd, uint32_t arg)
	Send a command. More...

static void	hsmci_set_speed (uint32_t speed, uint32_t mck)
	Set speed of the HSMCI clock. More...

static bool	hsmci_wait_busy (void)
	Wait the end of busy signal on data line. More...

bool	hsmci_write_word (uint32_t value)
	Write a word on the line. More...

Variables
static uint16_t	hsmci_block_size
	Size block requested by last hsmci_adtc_start() More...

static uint16_t	hsmci_nb_block
	Total number of block requested by last hsmci_adtc_start() More...

static uint32_t	hsmci_transfert_pos
	Current position (byte) of the transfer started by hsmci_adtc_start() More...

Detailed Description

(HSMCI) implementation

Macro Definition Documentation

◆ hsmci_debug

#define hsmci_debug ( ... )

Definition at line 87 of file hsmci.c.

◆ SD_MMC_HSMCI_MEM_CNT

#define SD_MMC_HSMCI_MEM_CNT 1

Definition at line 55 of file hsmci.c.

◆ SD_MMC_HSMCI_SLOT_0_SIZE

#define SD_MMC_HSMCI_SLOT_0_SIZE 1

Definition at line 73 of file hsmci.c.

Function Documentation

◆ hsmci_adtc_start()

bool hsmci_adtc_start	(	sdmmc_cmd_def_t	cmd,
		uint32_t	arg,
		uint16_t	block_size,
		uint16_t	nb_block,
		bool	access_block
	)

Send an ADTC command on the selected slot An ADTC (Addressed Data Transfer Commands) command is used for read/write access.

Parameters

cmd	Command definition
arg	Argument of the command
block_size	Block size used for the transfer
nb_block	Total number of block for this transfer
access_block	if true, the x_read_blocks() and x_write_blocks() functions must be used after this function. If false, the mci_read_word() and mci_write_word() functions must be used after this function.

Returns: true if success, otherwise false

Definition at line 458 of file hsmci.c.

◆ hsmci_adtc_stop()

bool hsmci_adtc_stop	(	sdmmc_cmd_def_t	cmd,
		uint32_t	arg
	)

Send a command to stop an ADTC command on the selected slot.

Parameters

cmd	Command definition
arg	Argument of the command

Returns: true if success, otherwise false

Definition at line 536 of file hsmci.c.

◆ hsmci_deselect_device()

void hsmci_deselect_device ( uint8_t slot )

Deselect a slot.

Parameters

slot	Selected slot

Definition at line 394 of file hsmci.c.

◆ hsmci_get_bus_width()

uint8_t hsmci_get_bus_width ( uint8_t slot )

Return the maximum bus width of a slot.

Parameters

slot	Selected slot

Returns: 1, 4 or 8 lines.

Definition at line 330 of file hsmci.c.

◆ hsmci_get_response()

uint32_t hsmci_get_response ( void )

Return the 32 bits response of the last command.

Returns: 32 bits response

Definition at line 436 of file hsmci.c.

◆ hsmci_get_response_128()

void hsmci_get_response_128 ( uint8_t * response )

Return the 128 bits response of the last command.

Parameters

response Pointer on the array to fill with the 128 bits response

Definition at line 441 of file hsmci.c.

◆ hsmci_init()

void hsmci_init ( void )

Initializes the low level driver.

This enable the clock required and the hardware interface.

Definition at line 302 of file hsmci.c.

◆ hsmci_is_high_speed_capable()

bool hsmci_is_high_speed_capable ( void )

Return the high speed capability of the driver.

Returns: true, if the high speed is supported

Definition at line 344 of file hsmci.c.

◆ hsmci_read_word()

bool hsmci_read_word ( uint32_t * value )

Read a word on the line.

Parameters

value Pointer on a word to fill

Returns: true if success, otherwise false

Definition at line 541 of file hsmci.c.

◆ hsmci_reset()

static void hsmci_reset ( void )

static

Reset the HSMCI interface.

Definition at line 126 of file hsmci.c.

◆ hsmci_select_device()

void hsmci_select_device	(	uint8_t	slot,
		uint32_t	clock,
		uint8_t	bus_width,
		bool	high_speed
	)

Select a slot and initialize it.

Parameters

slot	Selected slot
clock	Maximum clock to use (Hz)
bus_width	Bus width to use (1, 4 or 8)
high_speed	true, to enable high speed mode

Definition at line 349 of file hsmci.c.

◆ hsmci_send_clock()

void hsmci_send_clock ( void )

Send 74 clock cycles on the line of selected slot Note: It is required after card plug and before card install.

Definition at line 400 of file hsmci.c.

◆ hsmci_send_cmd()

bool hsmci_send_cmd	(	sdmmc_cmd_def_t	cmd,
		uint32_t	arg
	)

Send a command on the selected slot.

Parameters

cmd	Command definition
arg	Argument of the command

Returns: true if success, otherwise false

Definition at line 414 of file hsmci.c.

◆ hsmci_send_cmd_execute()

static bool hsmci_send_cmd_execute	(	uint32_t	cmdr,
		sdmmc_cmd_def_t	cmd,
		uint32_t	arg
	)

static

Send a command.

Parameters

cmdr	CMDR register bit to use for this command
cmd	Command definition
arg	Argument of the command

Returns: true if success, otherwise false

Definition at line 241 of file hsmci.c.

◆ hsmci_set_speed()

static void hsmci_set_speed	(	uint32_t	speed,
		uint32_t	mck
	)

static

Set speed of the HSMCI clock.

Parameters

speed	HSMCI clock speed in Hz.
mck	MCK clock speed in Hz.

Definition at line 157 of file hsmci.c.

◆ hsmci_wait_busy()

static bool hsmci_wait_busy ( void )

static

Wait the end of busy signal on data line.

Returns: true if success, otherwise false

Definition at line 216 of file hsmci.c.

◆ hsmci_write_word()

bool hsmci_write_word ( uint32_t value )

Write a word on the line.

Parameters

value Word to send

Returns: true if success, otherwise false

Definition at line 581 of file hsmci.c.

Variable Documentation

◆ hsmci_block_size

uint16_t hsmci_block_size

static

Size block requested by last hsmci_adtc_start()

Definition at line 113 of file hsmci.c.

◆ hsmci_nb_block

uint16_t hsmci_nb_block

static

Total number of block requested by last hsmci_adtc_start()

Definition at line 115 of file hsmci.c.

◆ hsmci_transfert_pos

uint32_t hsmci_transfert_pos

static

Current position (byte) of the transfer started by hsmci_adtc_start()

Definition at line 111 of file hsmci.c.

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ hsmci_debug

◆ SD_MMC_HSMCI_MEM_CNT

◆ SD_MMC_HSMCI_SLOT_0_SIZE

Function Documentation

◆ hsmci_adtc_start()

◆ hsmci_adtc_stop()

◆ hsmci_deselect_device()

◆ hsmci_get_bus_width()

◆ hsmci_get_response()

◆ hsmci_get_response_128()

◆ hsmci_init()

◆ hsmci_is_high_speed_capable()

◆ hsmci_read_word()

◆ hsmci_reset()

◆ hsmci_select_device()

◆ hsmci_send_clock()

◆ hsmci_send_cmd()

◆ hsmci_send_cmd_execute()

◆ hsmci_set_speed()

◆ hsmci_wait_busy()

◆ hsmci_write_word()

Variable Documentation

◆ hsmci_block_size

◆ hsmci_nb_block

◆ hsmci_transfert_pos