Atmel Software Framework

at25dfx.c File Reference

Management of the AT25DFx SerialFlash driver through SPI.

This file manages the accesses to the AT25DFx SerialFlash components.

Copyright (c) 2014-2015 Atmel Corporation. All rights reserved.

#include "board.h"
#include "status_codes.h"
#include "conf_at25dfx.h"
#include "at25dfx.h"
#include "spi_master.h"
#include "at25dfx_hal_spi.h"

Data Structures

struct  at25_cmd
 SerialFlash transfers request prepared by the AT25 driver. More...
 

Macros

#define AT25DFX_BLOCK_ERASE_CMD   AT25_BLOCK_ERASE_64K
 AT25 block erase command. More...
 
#define AT25DFX_BLOCK_SIZE   (64*1024)
 AT25 block size. More...
 
#define AT25DFX_DEV_ID   0x0001441F
 AT25 device ID. More...
 
#define AT25DFX_PAGE_SIZE   256
 The page size of AT25DF series is always 256. More...
 
#define AT25DFX_SIZE   (512 * 1024)
 AT25 total size. More...
 

Typedefs

typedef struct at25_cmd at25_cmd_t
 SerialFlash transfers request prepared by the AT25 driver. More...
 

Functions

static at25_status_t at25dfx_enable_write (void)
 Enable critical write operation on a SerialFlash device, such as sector protection, status register, etc. More...
 
at25_status_t at25dfx_erase_block (uint32_t address)
 Erase the specified block of the SerialFlash. More...
 
at25_status_t at25dfx_erase_chip (void)
 Erase all the content of the memory chip. More...
 
at25_status_t at25dfx_initialize (void)
 Initialize the SerialFlash. More...
 
at25_status_t at25dfx_mem_check (void)
 Check if the SerialFlash is valid. More...
 
at25_status_t at25dfx_protect_chip (uint8_t protect_type)
 Protect the SerialFlash device. More...
 
at25_status_t at25dfx_protect_sector (uint32_t address, uint8_t protect_type)
 Protect/unprotect the specific sector. More...
 
at25_status_t at25dfx_read (uint8_t *data, uint16_t size, uint32_t address)
 Read data from the specified address on the SerialFlash. More...
 
static at25_status_t at25dfx_read_dev_id (uint32_t *dev_id)
 Read and return the SerialFlash device ID. More...
 
at25_status_t at25dfx_read_sector_protect_status (uint32_t address)
 Read sector protection status. More...
 
at25_status_t at25dfx_read_status (uint8_t *status)
 Read and return the status register of the SerialFlash. More...
 
static at25_status_t at25dfx_send_command (at25_cmd_t *at25cmd)
 Start an AT25DFx command transfer. More...
 
void at25dfx_set_mem_active (uint8_t cs)
 Select the SerialFlash by the corresponding chip select. More...
 
static at25_status_t at25dfx_wait_ready (void)
 Wait for the SerialFlash device to be ready to accept new commands. More...
 
at25_status_t at25dfx_write (uint8_t *data, uint16_t size, uint32_t address)
 Write data at the specified address on the serial firmware SerialFlash. More...
 
at25_status_t at25dfx_write_status (uint8_t status)
 Write the given value in the status register of the SerialFlash device. More...
 

Variables

static uint8_t active_sf_cs = AT25DFX_MEM_ID
 Activated SerialFlash chip select, default to device 1. More...