On Mon, Jan 5, 2009 at 4:45 AM, William Brown <mahi...@earthlink.net> wrote:

> So now I'm getting this error:
>
> DEFAULT: Cannot detect DS9097 (passive) interface on /dev/ttyUSB1
>
> Can you tell me what it means?  Will owfs pass through a rs232/usb
> converter?

I general, yes.
There is a difference between the DS9097 and the DS9097U (blame Maxim for
that).
One is a passive device that depends on the exact serial pulses to
synthesize 1-wire pulses, the other (the 9097U) uses a IC called the DS2480B
to manage the 1-wire communication.

If you have a passive 9097 adapter, try --8bit. Some of the serial devices
can't create 6-bit communication. That might be the case withthe USB
convertor.

You are using /dev/ttyUSB1. I assume you got that from dmesg output. The
allocation can change each time and it's often not a symlink. The
permissions might not be applied to the actual device.

Can you try your code as root? sudo /opt/owfs/bin/....

Paul Alfille

>
> OS is Ubuntu 8.10.  My USB Adaptor DS9490R works and is set as the
> owserver 1wire adapter.  All my programs and web page work.  I am now
> trying to connect a serial DS9097 to my laptop using a HL-340 usb to
> rs232 adapter which is mounted to ttyUSB1.  Permissions are 777 and
> group is tty.  But I keep getting the cannot detect error.
>
> PS the 8.10 upgrade really messed up my system.  If you upgrade go
> cautiously.  It still has lot's of bugs in it.  I wish I had kept my
> 8.04 install, it worked pretty good. For all the time I spent fixing
> 8.10 I should have re-installed 8.04 but I thought the HL-340 would work
> and it sort of does.
>
>
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