Digi Watchport/T temperature sensor as /dev/ttyU

Hans Petter Selasky hps at selasky.org
Fri Aug 26 13:49:26 UTC 2016

On 08/26/16 15:38, O. Hartmann wrote:
> It is a USB interface PCB with an AT90USB162 microcontroler chip.
> Attached to a FreeBSD 12-CURRENT system, it reports itself as a UHID device.
> there is also a software package available - for Windows and Linux, but it
> doesn't work for FreeBSD, the package compiles and produces a cmdline binary,
> but it fails reading the sensor data - the uhid driver seems to be unloaded
> during the call. I have no skills in writing low-level USB software, so my
> explanation is slopy, sorry. But there is hope I can use this one.


Could you send a link to this Linux software?

It should work basically!

Is your libusb up-to-date?

You can trace USB activity using "usbdump -i usbusX -f Y -s 65536 -vvv".

Maybe some command failed.

Did you try "usbhidaction" to decode the data received?


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