nand_flash_mem.h File Reference

NAND Flash ctrl access interface definition.

This file contains ctrl access interface functions of NAND Flash module.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include "ctrl_access.h"

Macros
#define	NAND_FLASH_BUSY   2
#define	NAND_FLASH_NOT_INIT   0
#define	NAND_FLASH_READY   1
#define	NAND_FLASH_UNLOADED   3
#define	NAND_FLASH_VERSION   "1.0"

Functions
Ctrl_status	nand_flash_mem_2_ram (uint32_t addr, void *ram)
	This function transfers 1 data sector from memory to RAM. More...
Ctrl_status	nand_flash_ram_2_mem (uint32_t addr, const void *ram)
	This function transfers 1 data sector from RAM to memory. More...
Ctrl_status	nand_flash_read_capacity (uint32_t *u32_nb_sector)
	This function returns the address of the last valid sector. More...
bool	nand_flash_removal (void)
	This function informs about the memory type. More...
Ctrl_status	nand_flash_test_unit_ready (void)
	This function tests memory state, and starts memory initialization. More...
bool	nand_flash_unload (bool unload)
	This function unloads/loads the memory. More...
bool	nand_flash_wr_protect (void)
	This function returns the write-protected mode. More...

#define NAND_FLASH_BUSY   2

Referenced by nand_flash_test_unit_ready().

#define NAND_FLASH_NOT_INIT   0

Referenced by nand_flash_read_capacity(), nand_flash_test_unit_ready(), and nand_flash_unload().

#define NAND_FLASH_READY   1

Referenced by nand_flash_mem_2_ram(), nand_flash_ram_2_mem(), nand_flash_read_capacity(), nand_flash_test_unit_ready(), and nand_flash_unload().

#define NAND_FLASH_UNLOADED   3

Referenced by nand_flash_read_capacity(), nand_flash_test_unit_ready(), and nand_flash_unload().

#define NAND_FLASH_VERSION   "1.0"

Ctrl_status nand_flash_mem_2_ram	(	uint32_t	addr,
		void *	ram
	)

This function transfers 1 data sector from memory to RAM.

Parameters

addr	Sector address to start read
ram	Address of RAM buffer

Returns

Ctrl_status

This function transfers 1 data sector from memory to RAM.

Parameters

addr	Sector address to start read
ram	Address of RAM buffer

Returns

Ctrl_status

References CTRL_BUSY, CTRL_FAIL, CTRL_GOOD, nand_flash_read(), NAND_FLASH_READY, and nand_flash_status.

Ctrl_status nand_flash_ram_2_mem	(	uint32_t	addr,
		const void *	ram
	)

This function transfers 1 data sector from RAM to memory.

Parameters

addr	Sector address to start write
ram	Address of RAM buffer

Returns

Ctrl_status

This function transfers 1 data sector from RAM to memory.

Parameters

addr	Sector address to start write
ram	Address of RAM buffer

Returns

Ctrl_status

References CTRL_BUSY, CTRL_FAIL, CTRL_GOOD, NAND_FLASH_READY, nand_flash_status, and nand_flash_write().

Ctrl_status nand_flash_read_capacity

(

uint32_t *

nb_sector

)

This function returns the address of the last valid sector.

Parameters

uint32_t_nb_sector

Pointer to number of sectors (sector=512 bytes)

Returns

Ctrl_status

Parameters

nb_sector

Pointer to number of sectors (sector=512 bytes)

Returns

Ctrl_status

References addr_address, cmd_address, CTRL_BUSY, CTRL_GOOD, CTRL_NO_PRESENT, data_address, NAND_FLASH_NOT_INIT, NAND_FLASH_READY, nand_flash_status, nand_flash_translation_get_device_size_in_byte(), nand_flash_translation_initialize(), NAND_FLASH_UNLOADED, nf_translation, page_read_buffer, page_write_buffer, and SECTOR_SIZE.

bool nand_flash_removal

(

void

)

This function informs about the memory type.

Returns

true if the memory is removable

Ctrl_status nand_flash_test_unit_ready

(

void

)

This function tests memory state, and starts memory initialization.

Returns

Ctrl_status

References addr_address, cmd_address, CTRL_BUSY, CTRL_GOOD, CTRL_NO_PRESENT, data_address, NAND_FLASH_BUSY, nand_flash_flush(), NAND_FLASH_NOT_INIT, NAND_FLASH_READY, nand_flash_status, nand_flash_translation_initialize(), NAND_FLASH_UNLOADED, nf_translation, page_read_buffer, and page_write_buffer.

bool nand_flash_unload

(

bool

unload

)

This function unloads/loads the memory.

Returns

true if memory unload/load success

References nand_flash_flush(), NAND_FLASH_NOT_INIT, NAND_FLASH_READY, nand_flash_status, and NAND_FLASH_UNLOADED.

bool nand_flash_wr_protect

(

void

)

This function returns the write-protected mode.

Returns

true if the memory is protected