I would like to know how to connect GPIO to LinuxCNC’s E-Stop chain.

My SetupRaspberry Pi 5 8GBByte2Bot Parallel Port Raspberry Pi HatByte2Bot 5 Axis CNC Interface Adapter Parallel Breakout Board For Stepper Motor DriversPicture 1My wiring is as follows:Picture2

The motors move, the home switches register as functioning, the probe is not hooked up and the eStop appears to do nothing.From LinuxCNC V2.9.7 Documentation PDF Page 1854.9.3.7 External ESTOP button The standard_pinout.hal file assumes no external ESTOP button. For more information on an external E-Stop see the estop_latch man page.Yet from 2 pages earlier in LinuxCNC V2.9.7 Documentation PDF Page 183 I see this line in the HAL file:# create a signal for the estop loopbacknet estop-loop iocontrol.0.user-enable-out iocontrol.0.emc-enable-in I assume “man page” is a typo and this is unnecessary if I am trying to connect it to  GPIO25. A search of the document looking for “estop_latch” only reveals this on page 254Picture 3So my estop is on pin10, but that is GPIO25 on the Pi 5. I must refer to it as such.In my .Hal file I have the following lines:loadrt hal_gpio inputs=GPIO7,GPIO8,GPIO25,GPIO12,GPIO13 outputs=GPIO5,GPIO6,GPIO11,GPIO9,GPIO10,GPIO23,GPIO16,GPIO17,GPIO19,GPIO20,GPIO21,GPIO22,GPIO24,GPIO26net estop-out   <= hal_gpio.GPIO25-in  ornet estop-ext <= hal_gpio.GPIO25-in Using tools I can identify that all my limit switches are being read, but I have nothing to suggest the estop is being read.I have added“Addf gpio-input servo-thread” as recommended by ChatGPT, and that is not read by the programThe advice I am looking for is:
I would like to know how to connect GPIO25 to LinuxCNC’s E-Stop chain.I have tried:

net estop-out hal_GPIO.GPIO25.out => iocontrol.0.emc-enable-inand any variation thereof I could think of, failed.Eventually, I lost control of my servos and only when I removed all lines I gained control of F1, which controls the estop and F2, which powers the servos. 

Undo everything ChatGPT suggests and never ever use it again for anything related to Linuxcnc.

Far better to visit this thread
forum.linuxcnc.org/47-hal-examples/25861-external-e-stop#26684

You may have to invert the estop signal, as when you press the estop you are providing a 0v signal. You may also need to check whether the inputs to the estop are tied hi or low when the Estop is pressed.

I'm not sure what norm I have violated?

There were 2 new threads submitted by yourself with the same heading.

Yes, I have a jaundiced view of ChatGPT but I try to exhaust my resources before coming here.
I will check the link.
If you would like to read the question as formatted, check here:

acrobat.adobe.com/id/urn:aaid:sc:VA6C2:0...f2-9441-faf83de82c31

Thanks.

Come here first.

Too many times users have received info from chatgpt that make absolutely no sense.

Google searching for "linuxcnc estop latch" gives the link above as the 4th result.
Or you could use the search function of the forum.

Ahh, no discernible action when I hit SUBMIT the first time. I can wait it out in the future.

If I use the following code which has the one missing dash error that I corrected:

# estop
loadrt estop_latch
addf estop-latch.0 servo-thread
net estop-loopout iocontrol.0.emc-enable-in <= estop-latch.0.ok-out
net estop-loopin iocontrol.0.user-enable-out => estop-latch.0.ok-in
net estop-reset iocontrol.0.user-request-enable => estop-latch.0.reset
net remote-estop estop-latch.0.fault-in <= parport.0.pin-in-10-not

The bug-a-boo for me is how do I tie the GPIO25 to the remote-estop. Do I change the last line to:
net remote-estop estop-latch.0.fault-in <= hal_gpio.GPIO25-in-10-not

?