at45db.c

Included Files

#include <nut/include/cfg/os.h>

#include <nut/include/cfg/memory.h>

#include <nut/include/sys/timer.h>

#include </usr/avr/include/string.h>

#include <stdlib.h>

#include <nut/include/dev/at91_spi.h>

#include <nut/include/dev/at45db.h>

Preprocessor definitions

#define MAX_AT45_DEVICES 1

#define MAX_AT45_CMDLEN 8

#define AT45_CONF_DFSPI SPI0_BASE

#define AT45_CONF_DFPCS 1

#define AT45_ERASE_WAIT 3000

#define AT45_CHIP_ERASE_WAIT 50000

#define AT45_WRITE_POLLS 1000

#define DFCMD_READ_PAGE 0xD2

#define DFCMD_READ_STATUS 0xD7

#define DFCMD_CONT_READ 0xE8

#define DFCMD_PAGE_ERASE 0x81

#define DFCMD_BUF1_WRITE 0x84

#define DFCMD_BUF1_FLASH 0x83

Typedef AT45_DEVTAB

typedef struct _AT45_DEVTAB AT45_DEVTAB

`struct _AT45_DEVTAB`
`{`
`u_long devt_pages;`
`u_int devt_pagsiz;`
`u_int devt_offs;`
`u_char devt_srmsk;`
`u_char devt_srval;`
`}`

Typedef AT45DB_DCB

typedef struct _AT45DB_DCB AT45DB_DCB

`struct _AT45DB_DCB`
`{`
`AT45_DEVTAB* dcb_devt;`
`u_int dcb_spibas;`
`u_int dcb_spipcs;`
`u_char dcb_cmdbuf[8];`
`}`

Global Variable at45_devt

AT45_DEVTAB at45_devt[]

Visible in:		nut/dev/at45db.c
Used in:	At45dbInit()	nut/dev/at45db.c

Local Variables

dcbtab
static AT45DB_DCB dcbtab[1]

Used in:	At45dbGetStatus()
	At45dbInit()
	At45dbPageRead()
	At45dbPageWrite()
	At45dbParamPage()
	At45dbParamSize()
	At45dbSendCmd()

dcbnum
static int dcbnum

Used in:

At45dbInit()

dd_param
static int dd_param

Used in:	At45dbParamPage()
	At45dbParamRead()
	At45dbParamSize()
	At45dbParamWrite()

Global Function At45dbChipErase()

int At45dbChipErase ( void )

Prototyped in:

nut/include/dev/at45db.h

Global Function At45dbGetStatus()

u_char At45dbGetStatus ( int dd )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At91SpiTransfer2()
Called by:	At45dbInit()	nut/dev/at45db.c
	At45dbWaitReady()	nut/dev/at45db.c
References Variables:	dcbtab	nut/dev/at45db.c

Global Function At45dbInit()

int At45dbInit ( u_int spibas, u_int spipcs )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbGetStatus()	nut/dev/at45db.c
	At91SpiInit(), At91SpiInitChipSelects(), At91SpiReset(), At91SpiSetModeFlags(), At91SpiSetRate()
Called by:	At45dbParamSize()	nut/dev/at45db.c
References Variables:	at45_devt	nut/dev/at45db.c
	dcbnum	nut/dev/at45db.c
	dcbtab	nut/dev/at45db.c

Global Function At45dbPageErase()

int At45dbPageErase ( int dd, u_int pgn )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbSendCmd()	nut/dev/at45db.c

Global Function At45dbPageRead()

int At45dbPageRead ( int dd, u_long pgn, void* data, u_int len )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbSendCmd()	nut/dev/at45db.c
Called by:	At45dbParamRead()	nut/dev/at45db.c
	At45dbParamWrite()	nut/dev/at45db.c
References Variables:	dcbtab	nut/dev/at45db.c

Global Function At45dbPageWrite()

int At45dbPageWrite ( int dd, u_int pgn, const void* data, u_int len )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbSendCmd()	nut/dev/at45db.c
	At45dbWaitReady()	nut/dev/at45db.c
	free(), malloc()
Called by:	At45dbParamWrite()	nut/dev/at45db.c
References Variables:	dcbtab	nut/dev/at45db.c

Global Function At45dbParamPage()

u_long At45dbParamPage ( void )

Called by:	At45dbParamRead()	nut/dev/at45db.c
	At45dbParamWrite()	nut/dev/at45db.c
References Variables:	dcbtab	nut/dev/at45db.c
	dd_param	nut/dev/at45db.c

Global Function At45dbParamRead()

int At45dbParamRead ( u_int pos, void* data, u_int len )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbPageRead()	nut/dev/at45db.c
	At45dbParamPage()	nut/dev/at45db.c
	At45dbParamSize()	nut/dev/at45db.c
	free(), malloc(), memcpy()
References Variables:	dd_param	nut/dev/at45db.c

Global Function At45dbParamSize()

int At45dbParamSize ( void )

Calls:	At45dbInit()	nut/dev/at45db.c
Called by:	At45dbParamRead()	nut/dev/at45db.c
	At45dbParamWrite()	nut/dev/at45db.c
References Variables:	dcbtab	nut/dev/at45db.c
	dd_param	nut/dev/at45db.c

Global Function At45dbParamWrite()

int At45dbParamWrite ( u_int pos, const void* data, u_int len )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbPageRead()	nut/dev/at45db.c
	At45dbPageWrite()	nut/dev/at45db.c
	At45dbParamPage()	nut/dev/at45db.c
	At45dbParamSize()	nut/dev/at45db.c
	free(), malloc(), memcmp(), memcpy()
References Variables:	dd_param	nut/dev/at45db.c

Global Function At45dbSendCmd()

int At45dbSendCmd ( int dd, u_char op, u_long parm, int len, const void* tdata, void* rdata, int datalen )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At91SpiTransfer2(), memset()
Called by:	At45dbPageErase()	nut/dev/at45db.c
	At45dbPageRead()	nut/dev/at45db.c
	At45dbPageWrite()	nut/dev/at45db.c
References Variables:	dcbtab	nut/dev/at45db.c

Global Function At45dbWaitReady()

int At45dbWaitReady ( int dd, u_long tmo, int poll )

Prototyped in:	nut/include/dev/at45db.h
Calls:	At45dbGetStatus()	nut/dev/at45db.c
	NutSleep()	nut/os/timer.c
Called by:	At45dbPageWrite()	nut/dev/at45db.c