Parallel port check - Modules:parport -parport_pc

Hello everybody!
I´ve just read the conditions and realized that a "new topic" was the right way to post. I am new to the forum.

I've just "succeeded" on installing emc2-2.4.5 with RTAI 3.3 and Slackware kernel 2.6.10 with r12 patch.
But there is a problem about parallel port configuration.
When I try to run the "ptest.hal" I receive by dmesg:

insmode parport_pc failed:

---

Unknown symbol parport_ieee1284_ecp_read_data
Unknown symbol parport_ieee1284_epp_read_data
Unknown symbol parport_ieee1284_ecp_read_nibble

---

From that I made some hacking and found that if I insmod the "parport"
module it seems to work but don't know if it really does, because when I test the pins nothing happens.

Do I have to recompile the kernel with the "ieee1284" as Module?
Do I have to check first if my port is open collector? (Because if I don't insert the resistance nothing should happen¿?)
Do I really need to insert the "parport" module to insmod the parport_pc or is there another better module instead?

I'm Sorry... there is a lot of questions.

Regards.

Alejandro.

Hi

Why do you want to load parport_pc?

Linuxcnc has its own module hal_parport which handles the parallel port

If you try to load parport_pc, lp and ppdev, linuxcnc will not work

What I think you have done is tried to run the parallel port tester, whilst the parport is already claimed by parport_pc, which should not be loaded

Check /etc/modules does not have the line
lp
in it
Also that /etc/modprobe.d/linuxcnc.conf (or emc.conf) has the line
install parport_pc /bin/true
uncommented

What is unclear is why you ran the parallel port test at all.
Are you unable to run a config in Linuxcnc?

regards

Dear Arc:
Thanks for your answer!!
Last night I became obsessed with the problem until 4:30 AM.
The problems were:

Q: ¡Where the heck is my f*** parallel card?
A: My PC seen it as 16550 serial controller! - I found that on an Ubuntu forum.
I have also an embedded port that was detected as Printer, with 378 address. So I was sending bytes to the sky!!!

Q: What was my card address?
A: lspci -v => 0x1440; 0x1448 - Now it doesn't appear any more as 16550 serial controller.

"What I think you have done is tried to run the parallel port tester, whilst the parport is already claimed by parport_pc, which should not be loaded"
OK. The halrun tries to load the parport_pc. If "parport" is not lodaded it fails. What I didn't know was if it was a problem about "parport"

Finally I downloaded a little C program and checked the port an runned successfully.
Now I'll try with the ptest.hal

Regards!

Alejandro.

Dear Arc:
Finally I succeeded on testing the F*****************************************! port!!!!!!!!!!!!!!!

The ptest.hal works as intended. I also found 4 pins as inputs: 10, 11, 12, 13 and 15.

No I'll try to mount the hardware.

Here today is the "father's day". It is the best gift I could receive.

Regards

Alejandro.

Glad you sorted it out

Be aware that the LED lighting on the port tester means nothing unless there is a corresponding voltage at the pin in question.
But from what you wrote earlier I am sure you realise that

regards

Hello!
When I made the first tries the measures had nothing to see with the colors I saw in the leds.
Also I had to cut the cable and mount everything on a proto-board to be sure of the measures.


I was just to blame your program and post: "Hey! where did you get that colors from!"

I was lucky not to post that!!

I would be banned from the forum...

The result of the measuring was:

0.0 V Red
5.14 V Green

Regards,

Alejandro.

Hello!
For now i'll mount all the stuff. Try the motors, the HY-TB5DV_M_5Axis interface, mount the structure and so on.
Later I'll try the new versions.
I connected a little ear-phone on the output and heard the pulses.(!)

Alejandro.