TEMPERATURE will need to be more than 8 bits if you want higher resolution
over the full temperature range.

Gary.
 --------------------------------------------
Email: Gary.Fowler@dsto.defence.gov.au
Phone: +61 8 8259 5767
Fax:   +61 8 8259 5672

Defence Science & Technology Organisation
PO Box 1500, Salisbury, South Australia 5108
 --------------------------------------------

 ----------
> From: nogueira
> To: Multiple recipients of list PICLIST
> Subject: DS1820
> Date: Sunday, 1 September 1996 18:23
>
> Hi all,
>
> I'm using the DS1820 one-wire temperature sensor from Dallas and I'm very
> happy with it. It works very well and I have routines avaible to PICs.
>
> In order to get a resolution grater than 0.5 degree I need to do the
> following math, I'd like to get help solving this:
>
> TEMPERATURE=TEMP_READ-0.25+(COUNT_PER_C-COUNT_REMAIN)/COUNT_PER_C
>
> where:
> TEMP_READ = 8 bits
> COUNT_PER_C = 8 bits
> COUNT_REMAIN = 8 bits
> TEMPERATURE = 8 bits
>
> I just want a small routine to do this math. If anyone can help me,
> I will put the wole routine to use ths DS1820 on the list.
>
> Regards,
>
> Octavio
> --
> ========================================================
> Octavio Nogueira
> e-mail:   nogueira@mandic.com.br
> homepage: http://ourworld.compuserve.com/homepages/tato
> voice/fax: +55 11 240-6474
> ========================================================
> "ProPic" The first Production PIC Programmer running in
> Windows and under US$ 20.00.
> Avaible at http://ourworld.compuserve.com/homepages/tato
>