To me datasheet says pin1 is +5V and pin6 is gnd
There can be huge differences in the power capabilities of usb ports on
different machines, that's why I am insisting on power.
Vajk
On Thu, Dec 12, 2013 at 7:38 PM, Bernd Lamparter <bernd.lampar...@web.de>wrote:
> Hi Vajk,
>
> in the second scenario I connected 5Volt DC with +5V and GND of the LCD
> controller, i.e. pin 1 and 2.
> In both scenarios (with power from the DS2450R and with extra power
> supply) the windows/OneWireViewer works, the Linux/OWserver doesn't.
> The only hardware difference is in the different PCs, i.e. I unplug the
> DS2450R from the Windows-PC and plug it into the Linux-PC. There is no
> difference in the 1-Wire setup.
>
> Ciao,
> Bernd
>
>
> *Gesendet:* Donnerstag, 12. Dezember 2013 um 18:49 Uhr
> *Von:* "Vajk Fekete" <vaj...@gmail.com>
> *An:* "OWFS (One-wire file system) discussion and help" <
> owfs-developers@lists.sourceforge.net>
> *Betreff:* Re: [Owfs-developers] LCD-Display controller from Louis Swart
> does not show up
> we still cannot rule out the difference is in hardware.
> when you say use an additional power supply, what do you mean by that? did
> you connect a dc5v power supply to the gnd an +5v pins of the lcd unit?
>
> Vajk
>
>
> On Thu, Dec 12, 2013 at 6:26 PM, Bernd Lamparter
> <bernd.lampar...@web.de>wrote:
>>
>> Hi Jan,
>>
>> let me describe what I'm doing and what is happening:
>> 1. Connect DS9490R to the LCD controller with a RJ12. (Before I checked
>> that all wires are connected through)
>>
>> 2. Put this into the windows laptop, start oneWireViewer and see both
>> devices listed. I can't do anything more with this software, it just shows
>> both devices, the 81.xxx and the FF.yyy
>>
>> 3. Pull out the combination and put it into the Linux-PC (or the
>> raspberryPi) instead. Start owserver -u and see only the 81.xxx when
>> performing owdir /uncached.
>>
>> Because I heard that power supply of the LCD controller might be
>> problematic. So I performed the same 3 steps with additional power supply
>> with the exact same result.
>>
>> Conclusion:
>> Both devices work with OneWireViewer, only te 81.xxx is recognized by
>> owserver.
>> Could there be a timiing problem? I'm trying to debug, but it is very
>> difficult to find out on which function I have to look. It must be
>> somewhere in ow_dir.c
>>
>> Ciao,
>> Bernd
>>
>>
>> *Gesendet:* Donnerstag, 12. Dezember 2013 um 15:35 Uhr
>> *Von:* "Jan Kandziora" <j...@gmx.de>
>> *An:* "OWFS (One-wire file system) discussion and help" <
>> owfs-developers@lists.sourceforge.net>
>> *Betreff:* Re: [Owfs-developers] LCD-Display controller from Louis Swart
>> does not show up
>> Am 12.12.2013 00:02, schrieb Bernd Lamparter:
>> > It shows the adapter:81.D7BB30000000. Currently I don't have other
>> 1-wire
>> > devices connected.
>> >
>> That tells nothing. To check what's wrong, it's important to connect the
>> LCD controller, then read /uncached. When the 81.xxxx in the DS9490R
>> magically disappears when connecting the LCD controller, you have a
>> power or cabling problem.
>>
>> Kind regards
>>
>> Jan
>>
>>
>>
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