Writing to internal EEPROM ?

Forum 2005-2010 (read only) General Frequently-Asked Questions
1

Hi is it possible to store a small amount of data on the internal EEPROM of the Atmega8 chip?

If there isn't an arduino function for it yet, could somebody help with some C code?

Thanks very much

2

using the secret powers obviuosly :slight_smile:

value = eeprom_read_byte(address);

eeprom_write_byte(address,value);

it should work... if it does i'll add it to the docs

massimo

3

Ah great thanks. Have not had time to try it yet.

but just quick question.

I guess I can only write bytes - how many addresses are there?

4

using the secret powers obviuosly

value = eeprom_read_byte(address);

eeprom_write_byte(address,value);

it should work... if it does i'll add it to the docs

massimo

Can you tell us more about this secret power ? What are the adress an the kind of value we can use ?

thanks

/me

5

the address is between 0 and 511
value is any byte (8 bit number)

m.

6

Thanks for this great trick!
When writting the eeprom is it possible to erase or modify the current program?

7

Hye quique

refer to this thread :http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1142551600
Massimo give us an answer about different type of memory in the arduino board (in the avr)

regards

eric