Re: [avr-gcc-list] using EEPROM

[Artur Lipowski]

Jack Valmadre wrote:
> What I want the program to do is write a single byte (localVar) to EEPROM
> address 0, then read it and output it to PORTB.  However all the pin on
> PORTB are just going low.  What have I done wrong and how can I fix it?
As I understand it is exercise only and not for production purpose 
because avr-libc has build-in such functionality.

> unsigned int eVar1 EEPROM = 0;
> unsigned int eVar2 EEPROM = 0;
There are two bytes variables. If you wan one byte use unsigned char or 
(IMO preffered) uint8_t types.

...
> eeprom_read_block(&a, ptr, 1);
                             ^
                             |
You write two bytes and read back only one (which is MSB) and equals 0.

All is correct ;-)

Regards,
--
Artur Lipowski