I assume that the serial port of the embedded system only provides 5V on
its signal lines. If the DS9097 expects 12V and uses a voltage regulator
to provide 5V to the bus, it will most probably fail.
Can you measure voltage between 1wire and gnd pins on your adaptor?
It should not be much less than 5 volts.
best regards,
Markus
On Apr 3, Kassai Istvan <k...@zhnet.hu> wrote:
2012-04-03 20:11 keltezéssel, Paul Alfille írta:
So you've already done a lot of debugging -- the fuse system works, and the
hardware works on another system.
Thus the problem is with serial port handling (hardware or kernel or maybe
timing).
digitemp http://www.digitemp.com/ has support for the DS9097E passive
adapter and would be another test of the hardware.
It shouldn't be a polarity issue, but it could be a voltage problem on the
embedded board. The passive adapter steals power from the serial pins.
You mean it steals power for the adapter, or the sensor own? (I think for the
sensor, cause the adapter has only passive parts)
The sensor works in parasite mode. May the problem resolved by directly
powering the sensor?
Paul Alfille
On Tue, Apr 3, 2012 at 1:27 PM, Kassai Istvan <k...@zhnet.hu
<mailto:k...@zhnet.hu>> wrote:
There are two files under the owfs mountpoint named "shorts". One
in the
./bus.0/interface/statistics/ and one in the
./uncached/bus.0/interface/statistics/
Both of them contains "0"
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