Re: cannot read DS2760 Battery chip on h5555: cannot enter learn mode

I had a similar problem on a h5555, or a h5550 (i forget what i have). I
kind of put it aside
and left it there, but i'll be interested to hear your diagnosis. I posted
about it but didn't get a
response, i'll dig it up incase it helps.

On Feb 15, 2008 9:30 PM, Thierry Bugier <tbugier_at_yahoo.fr> wrote:

> Milan Plzik a écrit :
> > On St, 2008-02-13 at 08:37 +0100, Thierry Bugier wrote:
> >
> >> Hello
> >>
> >> I just bought a ipaq h5555 and flashed ROM to run familiar. I cannot
> get
> >> battery status, and I cannot enter learnong mode.
> >>
> >> cat /proc/asic/battery
> >> Unable to read DS2760 battery monitor
> >>
> >> cat /proc/asic/ds2760
> >> Unable to read DS2760 battery monitor
> >>
> >> cat /proc/asic/ds2760_raw
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >> ff ff ff ff ff ff ff ff
> >>
> >>
> >> cat /proc/hal/battery
> >> AC status : 1 (online) <= ok, changes when I unplug pda
> >> Battery #0
> >> Chemistry :0xff (unknown) <= Li-polymer written on the battery
> pack
> >> status :0x08 (charging) <= ok; becomes 0x01 when AC
> unplugged
> >> voltage :0x030f (3823 mV) <= doesn't decrease when running a
> >> few hours unplugged
> >> percentage :0x00 (0%) <= I've never seen any other value
> >> Life (min) : 0
> >>
> >> My battery is a replacement battery pack for 54xx/55xx (1400mAh). I'm
> >> not sure it is an authentic HP battery. I wonder if DS2760 is present
> in
> >> the battery.
> >>
> >
> > Looks like the battery really doesn't contain ds2760 chip
> >
> I received a new battery pack. I tried the same commands as above: cat
> /proc/... I got the same results, except to
> cat /proc/asic/ds2760_raw
> Unable to read battery (-512)
>
> I also opened my old battery. I found some electronics, and the DS2760
> chip.
>
> I'll try to read the source code to understand the meaning of -512.
>
> If I'm right, the DS2760 is connected to a serial interface in the
> h5555. I'm thinking about a damaged interface...
> >
> >> Because voltage never decreases, I cannot enter learn mode. As long I
> >> plug AC power, the battery LED flash, and load the battery. I thing it
> >> may be damaged when charging if it is already full.
> >>
> >> I'm wating for a new 3000 mAh battery pack. I'll test it with above
> >> commands.
> >>
> >>
> >> Regards
> >>
> >>
> >
> > Milan
> >
> >
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