AVR-Chat

I have a regrigerator that the thermostat went bad. Having a DS1820 
for the temperature sensor and using an Olimex prototype board I made 
a replacement. To store the Temperature Set Point and Differental Set 
Point (how much +/- the temp can swing from the requisted temp) I 
used the following code.

eeprom unsigned char ts=80;	//Temperature Set Point
eeprom unsigned char ds=1;	//Differental Set Point

This only changes each time I change them. To stop from recording 
each 1 step up or down there is a hold-off for about 5 sec. so I can 
change several degreese then the setting is stored in eeprom and the 
microcontroller starts using that as the setting to go by.

Now when power goes off the thermostat knows where to cool the fridge 
to.

Mike

--- In AVR-Chat@yahoogroups.com, josef mikle <josef_mikle@...> wrote:
>
> Hi John
>   does rR0 to R31 change after reset?
>   how can I save some few data (8 byte) in ram that after Reset I 
can recover them?
>   I will be appreciate if you send your reply on 
hosseingholizade@... add.
>   Bye
> 
> John Samperi <samperi@...> wrote:
>   At 10:25 PM 22/02/2006, you wrote:
> >If you look at this circuit, it is a block schematic, referring to 
Sheets
> >1, 2 etc up to SHEET-9 SCH
> 
> There is only 1 PDF file. All pages are there just scroll down
> to the page you want like others have suggested.
> 
> Regards
> 
> John Samperi
> 
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