Mesa UART doesnt work after update to linuxcnc2.8

Are you using your own uart driver .comp? mesa_uart is a pretty low-level driver and does nothing without a HAL component hooked in to it.

Very few people use it, I was wondering if _anyone_ used it until you started this thread.
linuxcnc/src/hal/drivers/mesa-hostmot2/uart.c hasn't changed for years. Which version last worked for you?

There is a problem I vaguely remember with UART and SSERIAL disagreeing over an "instance stride". Is it possible that you also updated the board firmware at the same time? Which Mesa card are you using?

Also with UART enabling BIT file installed in your mesa cards, and you run linuxcnc from the command line. the RX and TX functions will report in on initialisation. If you can't see that in the terminal window, you may have inadvertently over written the Mesa firmware on upgrade.

And Andy, I want to use the UART but don't have one of the $4k plasma cutters to talk to to actually play with the UART.

andypugh wrote: Are you using your own uart driver .comp? mesa_uart is a pretty low-level driver and does nothing without a HAL component hooked in to it.

Very few people use it, I was wondering if _anyone_ used it until you started this thread.
linuxcnc/src/hal/drivers/mesa-hostmot2/uart.c hasn't changed for years. Which version last worked for you?

There is a problem I vaguely remember with UART and SSERIAL disagreeing over an "instance stride". Is it possible that you also updated the board firmware at the same time? Which Mesa card are you using?

I tried use latest version 2.9, It's actually original version mesa_uart just modify baudrate (i did this because i think my component has problem but it's not).
I'm using Mesa_5i25. That time i used 2 Mesa cards 1 for UART, 2nd for SSERIAL.

Can you check that your firmware still has UARTs?

[code}halrun
loadrt hostmot2
loadrt hm2_pci
exit
dmesg
[/code]

My dmesg file:


My dmesg2 file for the source that is running ok:

If you are using the uspace build (preempt-rt( then the useful messages don't appear in dmesg, they are found in the terminal output if you start LinuxCNC from the command line.