parallel port test help

hi.
i have problem when i take the example tester port parallel leds of gut starting linuxcnc i can't read the values of pin out with an multimeter or i can't see light up of led.
thank you.

ghanimat47 wrote: hi.
i have problem when i take the example tester port parallel leds of gut starting linuxcnc i can't read the values of pin out with an multimeter or i can't see light up of led.

Do the inputs work?

The most likely thing is that you don't have the right base address.

andypugh wrote:

ghanimat47 wrote: hi.
i have problem when i take the example tester port parallel leds of gut starting linuxcnc i can't read the values of pin out with an multimeter or i can't see light up of led.

Do the inputs work?

The most likely thing is that you don't have the right base address.

The script sets the port to 0x378, but there are still computers that use 0x278, or you could even be testing a PCI card port, not enough info to tell.

Why are you testing the port, is it because your machine does not work, or is it because you don't have a machine yet and are just testing out of curiousity?

regards

See last post here:
forum.linuxcnc.org/18-computer/4743-para...port-tester?start=10
I have the same problem.
The port tester give all signals on the display.
But LinuxCNC receive nothing.
It is a DELL Optiplex GX620. Now i order a SHINESTAR PCI to DB25 LPT Parallel Port Expansion Card with Low Profile Bracket
and hope, this will work.

use
dmesg | grep parp*
to detect the correct parport adress

it seams to be the wrong one

then use HALshow
in mashine menue
(watch List( select
parport.0 pins to be watcht

spicer wrote: The port tester give all signals on the display.
But LinuxCNC receive nothing.

That means they are not connected to anything in HAL.
Use the show pin in hal watch and check the names of the hal pins that the limits are attached to.