Good evening,
I have problems in reading the DS18B20 connected to unipi 1.1 !!
I tried to load the OneWire draft CoDeSys but is not designed to unipi but for raspberry and it does not work.
How can I just read a value from the sensor?

I tried to enter the raspberry and typing:

PI3_MMM pi @: ~ $ cd / sys / bus / w1 / devices
pi @ PI3_MMM: / sys / bus / w1 / devices $ cd 28-0004442100ff
pi @ PI3_MMM: / sys / bus / w1 / devices / 28-0004442100ff $ cat w1_slave

00 00 00 00 00 00 00 00 00: crc = 00 YES
00 00 00 00 00 00 00 00 00 t = 0

It seems to not work !!
I have three sensors, and I tried them all with the same result.

Tips?

Thank you, Alberto

Hi,
could you check if this works with the example Project from
CODESYS V3 Raspberry Pi share your devices & libraries & applications

l viewtopic.php?f=23&t=6247&p=16920#p16920 l

BR
Edwin

Edwin Schwellinger hat geschrieben:
Hi,
could you check if this works with the example Project from
l viewtopic.php?f=23&t=6247&p=16920#p16920 l
BR
Edwin

Thanks Edwin,
but the project is for raspberry alone, I have the UNIPI board 1.1 and the sensor is connected directly to the expansion card.
The sensor is connected to the RJ45 BUS 1Wire of unipi then I think the problem lies.

Thank you, Alberto

Hi,

then maybe better ask the UniPi Support...

http://store.codesys.com/codesys-for-unipi.html#Support

BR
Edwin