hello, vasile , vasi &co,

my source is since long time in :
http://tech.groups.yahoo.com/group/jallist/files/DS1820%20with%20CRC%20%2B%20USB%20BOOT%2018F/

no negatif temp but check crc.

i'm happy you can use it.

jean Marchaudon


On Dec 13, 1:04 pm, vasile surducan <[email protected]> wrote:
> if sign == high then           ; negative temperatures
>         assembler
>         comf    t_lsb,f         ;complement all two bytes
>         comf    t_msb,f
>
>         incf    t_lsb,f         ;inc. low byte always
>         skpnz                   ;skip if no carry to higher bytes
>         incf    t_msb,f         ;carry to next byte
>         end assembler
>  end if
>
> Maybe you translate this in jal, as word is producing too long code...
>
> Vasile
>
>
>
> On Mon, Dec 13, 2010 at 1:57 PM, funlw65(Vasi) <[email protected]> wrote:
> > Then, I believe you are right. I will see on Arduino library how they
> > do it... if there is not another source...
>
> > Vasi.
>
> > On Dec 13, 1:51 pm, vasile surducan <[email protected]> wrote:
> > > OK, apai nu cred c-o sa mearga...because you didn't computed the two's
> > > complement for negative temperature display.
>
> > > Vasile
>
> > > On Mon, Dec 13, 2010 at 1:46 PM, funlw65(Vasi) <[email protected]>
> > wrote:
> > > > Hi Vasile,
>
> > > > Not tested it yet but I will! do it tomorrow - pentru ca azi mai am de
> > > > taiat niste lemne cu drujba :-D
>
> > > > On Dec 13, 9:12 am, vasile surducan <[email protected]> wrote:
> > > > > Hi Vasi,
>
> > > > > I'm just curious, this library works Ok with negative temperatures
> > too?
>
> > > > > thx,
> > > > > Vasile
>
> > > > > On Wed, Aug 18, 2010 at 2:42 PM, vasi vasi <[email protected]>
> > wrote:
> > > > > > We don't have yet a 1wire library and I needed it for a DS18B20
> > > > temperature
> > > > > > sensor. But I found one written by Vasile and adapted by Jean
> > > > Marchaudon,
> > > > > > included in Bert van Dam package. Is there a reason why not
> > including
> > > > it in
> > > > > > Jallib? For a DS18B20 library, I did one (not really necessarily)
> > > > looking at
> > > > > > And-Tech.pl samples for their EvB 4.3 board and at Bert library,
> > > > > > ds1822_1_wire.jal. Now, I have working examples [?] but lots of
> > > > warnings.
> > > > > > Here is also a "disabled" sensor config.range and resolution
> > function ,
> > > > not
> > > > > > tested - needs advices from experts.  All functions which start
> > with
> > > > "s_"
> > > > > > are for a unique device on bus - others require the ID for access a
> > > > sensor
> > > > > > on multiple sensors on bus.
> > > > > > First example (thermometer.jal and an image included) is reading a
> > > > unique
> > > > > > device on 1wire bus and the second is reading the device on a
> > multi.
> > > > sensor
> > > > > > bus, using the ID discovered in first example.
> > > > > > Maybe is useful in taking some decisions about this (new and
> > general
> > > > > > libraries, samples, etc...)
> > > > > > --
> > > > > > Vasi
>
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> > > > > < 1KViewDownload
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