EEPROM Emulation Code for uPSD3200

[andreasschreckenberg9]

Posted on September 24, 2004 at 02:34

EEPROM Emulation Code for uPSD3200

[andreasschreckenberg9]

Posted on May 17, 2011 at 12:03

Hello,

I use the eeprom emulation code in my application. But I found

that I have timing problems: If I called eeprom_update() more than

150 times, the writing time increased continous. At least I took 6 seconds (!)

to write the data.

Has anyone notice such a proplem ? Searching throung the linked-list ?

I'am a little bit confusing how to use the id parameter in

the functions update_record() and read_record() ?

Especially if I choose a EEPROM_RECORD_SIZE greater than 1.

I used the following configuration in eeprom.h:

typedef enum

{

EEPROM_ID_HARDWARE_STATE = 0,

EEPROM_ID_SECURITY_STATUS = 1,

EEPROM_ID_TRANSPORT_KEY_BYTE1 = 2,

EEPROM_ID_TRANSPORT_KEY_BYTE2 = 3,

EEPROM_ID_TRANSPORT_KEY_BYTE3 = 4,

EEPROM_ID_TRANSPORT_KEY_BYTE4 = 5,

EEPROM_ID_TRANSPORT_KEY_BYTE5 = 6,

EEPROM_ID_TRANSPORT_KEY_BYTE6 = 7,

EEPROM_ID_TRANSPORT_KEY_BYTE7 = 8,

EEPROM_ID_TRANSPORT_KEY_BYTE8 = 9,

EEPROM_ID_LCD_LIGHT = 10,

EEPROM_ID_POWER_LOSS_STATUS = 11,

EEPROM_ID_SOUND_VOLUME = 12

} EepromId;

// EEPROM Sector size is 8192 bytes

// EEPROM_RECORD_SIZE and max_records (entered by application /programmer)

// must be defined such that

// (max_records * EEPROM_RECORD_SIZE) + header size (7 bytes) <= 8192/2

// size in bytes of each record

#define EEPROM_RECORD_SIZE 1

// number of bytes per sector

#define SECTOR_SIZE 0x2000

// maximum number of data records handled in the eeprom emulation

#define EEPROM_MAX_RECORDS 50

Ciao, Ciao

Andreas

[joseph2399]

Posted on May 17, 2011 at 12:03

Please send your questions to the application engineering department at:

mailto:[e-mail]

. Also provide the following information so we can better help you:

Name

Company Name

Phone Number

Location (City, State, Country)

Production uPSD part number (3234, 3334, etc.)

Application

Projected annual volume (units)

Production start date

Thanks,

uPSD Applications Engineering