at45dbx_mem.h File Reference

CTRL_ACCESS interface for the AT45DBX data flash driver.

Copyright (c) 2010-2018 Microchip Technology Inc. and its subsidiaries.

#include "conf_access.h"
#include "ctrl_access.h"

Functions
Control Interface
Ctrl_status	at45dbx_test_unit_ready (void)
	Tests the memory state and initializes the memory if required. More...
Ctrl_status	at45dbx_read_capacity (U32 *u32_nb_sector)
	Returns the address of the last valid sector in the memory. More...
bool	at45dbx_wr_protect (void)
	Returns the write-protection state of the memory. More...
bool	at45dbx_removal (void)
	Tells whether the memory is removable. More...
bool	at45dbx_unload (bool unload)
	Unload/load the memory. More...
MEM <-> RAM Interface
Ctrl_status	at45dbx_df_2_ram (U32 addr, void *ram)
	Copies 1 data sector from the memory to RAM. More...
Ctrl_status	at45dbx_ram_2_df (U32 addr, const void *ram)
	Copies 1 data sector from RAM to the memory. More...

Ctrl_status at45dbx_df_2_ram	(	U32	addr,
		void *	ram
	)

Copies 1 data sector from the memory to RAM.

Parameters

addr	Address of first memory sector to read.
ram	Pointer to RAM buffer to write.

Returns

Status.

Ctrl_status at45dbx_ram_2_df	(	U32	addr,
		const void *	ram
	)

Copies 1 data sector from RAM to the memory.

Parameters

addr	Address of first memory sector to write.
ram	Pointer to RAM buffer to read.

Returns

Status.

Ctrl_status at45dbx_read_capacity

(

U32 *

u32_nb_sector

)

Returns the address of the last valid sector in the memory.

Parameters

u32_nb_sector

Pointer to the address of the last valid sector.

Returns

Status.

bool at45dbx_removal

(

void

)

Tells whether the memory is removable.

Returns

true if the memory is removable, else false.

Ctrl_status at45dbx_test_unit_ready

(

void

)

Tests the memory state and initializes the memory if required.

The TEST UNIT READY SCSI primary command allows an application client to poll a LUN until it is ready without having to allocate memory for returned data.

This command may be used to check the media status of LUNs with removable media.

Returns

Status.

bool at45dbx_unload

(

bool

unload

)

Unload/load the memory.

Parameters

unload

true to unload, false to load.

Returns

true if the operation is success, else false.

bool at45dbx_wr_protect

(

void

)

Returns the write-protection state of the memory.

Returns

true if the memory is write-protected, else false.

Note

Only used by removable memories with hardware-specific write protection.