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Yes, special function pins revert to GPIO if the special function is disabled in HAL

For example on a 7I96S, if you only need 4 step/dir pairs you set num_stepgens=4 in the hal file
and then the GPIO pins that would have been STEP4 and DIR4  become GPIO 25 and 26

To use these GPIO pins as outputs, you must set them into output mode:

setp hm2_7i96s.0.gpio.025.is_output true
setp hm2_7i96s.0.gpio.026.is_output true

and then link the output to the desired signal

net  some_output hm2_7i96s.0.gpio.025.out

You may need to invert the output and choose the proper + or - pin
to insure that the output is low at power up or when you exit from LinuxCNC:

setp hm2_7i96s.0.gpio.025.invert_output true


To determine the terminal block to GPIO pin mapping, look at the appropriate .pin file
or run:

mesaflash --device [cardname] --addr [card_address] --readhmid




 

At the very top of your hal file, there is some symbol that does not belong there, seem like '

All Mesa cards have the ability to use every pin as I/O if not used for special purposes, like stepgen or PWM or encoder, so you can use the step/dir of stepgen 4 (5'th stepgen) by loading just 4 stepgens.
No idea about the pinout though, been a long time, but manual should have everything explained.

www.forum.linuxcnc.org/38-general-linuxc...4-16?start=10#315975

If yes, where do I find them in HALSHOW?

I'm making a little interface board and have some leftover space, so I could gain a few extra o/p points if I can take advantage of these, perhaps drive a few SSR's.

Mesa 7i96s

Is that "missing amd gpu firmware something or another"?
That is not a fault, just a warning about missing firmwares for older GPU's.

I am getting an error on startup after adding the lines about offset mode.  I attached error report and current hal.

Machine jogs around well.  Its when I hit the power button in qtplasmac that enables the motors that they move/jump a little bit.  Offset mode would  correct/dampen that I assume?

Yes there is an example. Two normal stepper drives and one stepper motor spindle.
In the example directory.
 

Hi Hakan
thank you
What should the whole thing look like in the hall and ini? is there an sample?
 

Yes, you would have to set it manually in HAL, something like:

setp hm2_7i97.0.pwmgen.00.offset-mode true

I think you hit all problems.
"raspi-firmware: missing /boot/firmware, did you forget to mount it?"

You can use this component instead of the standard cia402 component.
github.com/MetalMusings/cia402pv
The drive uses PV (Profile Velocity) mode which is more suitable
for a spindle motor as it has its own speed ramp up and down.
 

You can search Debian install amdgpu fault via Google or you can try the text installer.

1. Remove 'loadrt matrixkins' from your hal file
2. The KINEMATICS entry of the [KINS] section in your ini file needs to look like this (matrixkins does not support the 'coordinates' parameter):

Hi rodw, Im sorry to bother you - the link to your doc in google docs is deleted, can you please tell me where I can find this again actually? I'm again struggling with packet losses.
docs.google.com/document/d/1jeV_4VKzVmOI...diY/edit?usp=sharing is deleted.

Thanks for your efforts!
Hanno