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The first card is in testing now.

 

There is an outstanding pull request to allow this.

github.com/LinuxCNC/linuxcnc/pull/2722

I can definitely see uses for this, especially if there was a way for the two processes to communicate.

Look like the scaling is wrong on the X Axis ( max velocity is .1666 mm/s )

If there is an issue with pncconfs scaling helper, you could just calculate
the steps per mm and enter that directly.

The PID boilerplate is fine.

To setup pin 16 for spindle control you need to set the number of stepgens to
3 or 2 in pncconf to free up pin 16 as GPIO 5. I would also set the number of pwmgens
and encoders to 0, then hit "Accept components changes" to free up all GPIO
for any other outputs or inputs you need:


 


GPIO outputs need to be set to "GPIO Output" in the pin type menu:


 


 

Thank you unknown, that's very important information. I noticed that the card came with the W1 and W2 jumpers in pull-up mode. I moved them to pull-downs. 
Hardware-wise, I'm closer to my goal. 

Now, regarding software configuration. I used pncconf to generate a configuration using 7i92t_g540d.bin, since pncconf does not show the firmware that corresponds to what I need (in the stepconfs, dir and step are swapped). The firmware that matches the lathe is 7i92t_benezanx2d.bin.

Can anyone review my hal and ini files (attached) and tell me how to handle swapping the dir and step pins? After the hal is corrected, I assume I need to flash the benezan firmware, right?

Also, if someone can suggest how to clean up those files... I only need to control the pins I mentioned when I opened this topic (see top).

I may need to come back later about the PID stuff and the scale calculation. One of the issues I found in pncconfig is that the pitch can only be a value >= 1, I needed to enter a value of 0.8 mm/rev.

Hey peeps. I have searched the Internet and cant find an answer. I have hooked up absolute encoders and when I try to save the current position G54 on the offsets page I get the error bad character a used. Any idea what's going on? I can losd the table and clear it, but cant save it. 

Not sure if this is a pb thing or a linuxcnc thing. I read that when himing for the first time with absolute encoders i need to save the home position by zeroing the axis and saving the cirrent position to the offsets tab.

Many thanks