huanyang vfd & linuxcnc 2.7

I have linuxcnc 2.7 and iam trying to compile this
github.com/bebro/linuxcnc-huanyang-vfd
but it does not compile.. comp command does not exist in 2.7 version .
Any help how to compile and install this huanyang vfd plugin ?

comp was renamed halcompile, remainder of switches etc are the same.

Name clashed with other apps to do with comparison and was causing confusion with some users.

regards

i have installed this github.com/bebro/linuxcnc-huanyang-vfd/tree/linuxcnc
but linuxcnc can not start.
Iam using a usb to rs485 adapter recognized as /dev/ttyUSB0

the binary is there, you don't need to compile if you don't want to

post the errors you are getting. I have a bunch of experience with this, just need to remember all the problems I had getting it going.

I have compiled fine but binary seems that can not connect..
Iam using this adapter www.ebay.com/itm/New-USB-to-RS485-USB-48...Mac-OS-/381097954687
I will buy now this adapter www.ebay.com/itm/RS-232-New-RS232-to-RS-...verter-/141516794700
perhaps the problem is the adapter or the wire lenght and termination i connected it without 120 ohm resistors

have you set up your vfd correctly?

PD001 = 2 (run commands to comm port)
PD002 = 2 (operating freq to comm port)
PD163 = 1 (slave address 1)
PD164 = 1 (baud rate to 9600 b/s)
PD165 = 3 (8N1 for RTU mode)

you can pick what you want for pd164 and pd165, just make sure they match what is specified in custom.hal

It is helpful to setup a loopback, and using a terminal program, make sure the rs485 is working.
I had to verify my stuff on a scope to make sure which wire was + and what was -. also I had to leave off the 120 ohm resistors, the waveform became unreadable with them installed.


once that side of everything is working, it's just a matter of making sure all the vfd settings match what the parameters for custom.hal

you can run hy-vfd in a terminal to see all the command line options.

I have been set the parameters correctly to the vfd and code
but the output is: RTAPI error can't access shared memory and then segfault.