andypugh

The Mesa BiSS / SSI etc functions handle this using a string parameter that encodes the number of bits and their HAL pin names: http://linuxcnc.org/docs/2.7/html/man/man9/hostmot2.9.html#Synchronous Serial Interface (SSI) This might...

Components and pins _used_ to be fixed at compile-time in LinuxCNC too. I had to change that to support smart-serial. It's just a matter of keeping the pins in a...

rtai_ulapi used rtai_malloc, that's the userspace RTAI code, I think. It might be worth trying a usespace rtai build, I think that is a thing...

A suggestion from Seb was to produce the smallest possible C program to demonstrate the problem so that the RTAI folk can test without needing to compile LinuxCNC. It's an...

Seb says that he had similar problems with RTAI 5.0 on kernel 4.4 some years ago. (Which is why we still have Wheezy-RTAI as a distribution, it's the last RTAI...

What errors did you see? I will point out that (a) we are working on it, and (b) that's 1% of the times you shut down after finishing the job.

I could put up with the exhaust dropping off my motorcycle every time the engine was stopped, if it automatically re-attached when I re-started it again. (To extend the metaphor)....

That sounds promising, though. Do you have any idea _why_ it helps? (Sorry, I have moved off of this for a couple of days to actually make some motors move,...

Talking of fat-trimming. I have had a bit of a look at the idea of a minimal test case. And "linuxcnc" can be pared down to "realtime start" and that...

I tried running Valgrind. It isn't much help with _where_ the problem is, but does seem to find something. First, running the abs.0 test with preempt-RT. https://pastebin.ubuntu.com/p/YTPyy63bBM/ Then with RTAI:...