Michael Heimpold

As it was already pointed out, this seems to be expected behaviour: from the point of view of your operating system, the port is still a simple UART. It does...

You could have a look at the linked branch I pushed. But this is only compile tested against libgpiod v1.4 on a recent Ubuntu 22.04. Another option would be to...

The question is whether it is necessary to support libgpiod stuff on all these distros - it was not the case until now, right? From my point of view, many...

@esaaprilla: why didn't you create a new thread? looks like the ldap library stuff is missing or could not be detected. please just use php8 with snapshot, or is there...

You should tell us more about the Modbus server device, the used hardware (RS-232/RS-485...) on the Raspi side, what UART drivers are involved etc. I cannot imagine that this is...

The timeouts are really tight and with respect to the baudrates, I wonder whether the whole approach with Linux as none-RTOS system makes sense. As already mentioned, I'd also try...

I think @stephane could export a PDF version of the Google form which you can then fill, sign and send back via email... On the other hand, does your company...

Stumbled over this old PR; issues are still present, so I've rebased and updated it.

Any reason to not merge this?

Why? Could you elaborate, please? According to my understanding of https://modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf the implementation is correct.