AVR-Chat

Hi there;

I am not sure how reading and writing the EEPROM works using avr-libc.
I was wondering if anyone could tell me the correct method of reading
and writing byte 0 of the EEPROM?  I only want to store and recover
3 different bytes of information.

Would this work to write "value" to location 0 of the EEPROM?

eeprom_write_byte((uint8_t *)0, value);

and would this read it back:

value = eepromt_read_byte((uint8_t *)0);

Thanks, eh.

Craig

--- Craig Limber <ffdude@shaw.ca> wrote:
> 
> Hi there;
> 
> I am not sure how reading and writing the EEPROM
> works using avr-libc.
> I was wondering if anyone could tell me the correct
> method of reading
> and writing byte 0 of the EEPROM?  I only want to
> store and recover
> 3 different bytes of information.
> 
> Would this work to write "value" to location 0 of
> the EEPROM?
> 
> eeprom_write_byte((uint8_t *)0, value);
> 
> and would this read it back:
> 
> value = eepromt_read_byte((uint8_t *)0);
> 
> Thanks, eh.
> 
> Craig
> 

hi.
it works, but not safe for all addresses of EEPROM's
bcz if address be >255 and device has an EEPROM size
of 256 or more the address of byte must be passed as
<int> value, instead of <uint8_t>. so the only things
you need is to #include <eeprom.h> and for getting a
byte from any address use:

uint8_t value = eeprom_rb( address_of_byte_in_eeprom
);

and for writing:

eeprom_wb( address_of_byte_in_eeprom, value );

good luck.




	
		
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