Well I had got that wrong, main system is powered and I hadn't adjusted
for that, but having linked VDD and GND it still behaves the same.
I have just tested it out using a spare RasPi and the new sensors and
wiring are fine, which is what I wanted to test, but I am still
interested to get to the bottom of this.
On 12/06/13 11:45, Marc dirix wrote:
Are you using them with passive power (powered by the 1-wire line)? If
so, possibly you connected the VCC pin wrong (I did that once and got
the same behaviour).
/Marc
Op 12 jun. 2013 12:31 schreef "Mick Sulley" <m...@sulley.info
<mailto:m...@sulley.info>> het volgende:
i am extending my network, adding 3 temperature sensors and I
wanted to
test the wiring before I actually connect them to my live system. I
installed owfs on my laptop and used a spare DS9490R USB adapter to
connect to the new sensors. This is what I see at the terminal
mick@mick-deb-laptop:/opt/owfs/bin$ sudo ./owfs -u -m /var/1-wire/mnt/
--nozero --allow_other
DEFAULT: ow_usb_msg.c:(295) Opened USB DS9490 bus master at 2:3.
DEFAULT: ow_usb_cycle.c:(191) Set DS9490 2:3 unique id to 81 8C 7E
30 00
00 00 BA
mick@mick-deb-laptop:/opt/owfs/bin$
That all looks OK, but when I look at the directory in Nautilus I see
everything as expected, but when I double click the 'temperature'
register for example, I get an error
The folder contents could not be displayed.
Sorry, could not display all the contents of "temperature": Not a
directory
But if I move to the sensor directory in a terminal and cat
temperature
it works!
mick@mick-deb-laptop:/var/1-wire/mnt/28.C33A7A020000$ cat temperature
21.25mick@mick-deb-laptop:/var/1-wire/mnt/28.C33A7A020000$
From what I have seen I suspect that my new sensors and wiring are OK
and the problem is with my laptop, but I would be much happier if
I knew
exactly what the problem is. Any idea what is wrong here?
Thanks
Mick
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