Mindstorms Troubles

farrioth · Posted: Thu Jun 10, 2004 4:01 am Post subject: Mindstorms Troubles

Whenever I try to access my Lego USB Tower using NQC, I get the following error:

tomthewombat · Posted: Thu Jun 10, 2004 4:19 am Post subject:

If you are using Gentoo's ebuilds, i don't think they have usb support. Use my ebuilds. Its late here and I need to goto bed. I'll get back to you with more info. BTW.. if you are using my ebuilds, make sure that /usr/src/linux points to the proper kernel version.

farrioth · Posted: Thu Jun 10, 2004 4:29 am Post subject:

I'm using your ebuilds. /usr/src/linux is correct.

tomthewombat · Posted: Thu Jun 10, 2004 1:35 pm Post subject:

do you have a /dev/usb/legousbtower0?

farrioth · Posted: Thu Jun 10, 2004 9:36 pm Post subject:

Yes;

Legoguy · Posted: Fri Jun 11, 2004 3:03 am Post subject:

I've tried this before with similar fate. I guess I'm glad I have a Mindstorms 1.0 set with the Serial tower and the RCX with the power jack on the back

I ordered the USB tower from PITSCO LEGO and enjoyed using it on Windows until I relized it had lower range - I suggest getting a serial tower if you can.

tomthewombat · Posted: Fri Jun 11, 2004 3:23 am Post subject:

Try not putting the USB tower behind any hubs and btw do you use ehci (usb 2.0) in your kernel? and do you use uhci or ohci?

tomthewombat · Posted: Fri Jun 11, 2004 3:30 am Post subject:

if you do have ehci try legousbtower.c 0.92.

Oh by the way. Did you ever patch the legousbtower in the kernel at all? The one currently in the kernel only works on some ohci systems. Not uhci or ehci.

farrioth · Posted: Fri Jun 11, 2004 5:08 am Post subject:

I've tried the new version, still the same problems.
I did patch the kernel.
The tower is not behind a hub.
I don't know weather i'm using ohci or uhci. My mobo is an Asus K8V.
Ehci, ohci, and uhci are all modules, and are loaded.

tomthewombat · Posted: Fri Jun 11, 2004 12:51 pm Post subject:

try it without loading the ohci or ehci. Mainly the driver still has trouble with usb2.0 and functioning behind hubs.
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farrioth · Posted: Fri Jun 11, 2004 9:08 pm Post subject:

Ohci_hcd and ehci_hcd are loaded weather I like it or not.
Do I have to not compile them at all?
Note that i'm using genkernel.

tomthewombat · Posted: Fri Jun 11, 2004 11:52 pm Post subject:

try rmmod

I know that the legousbtower driver has problems with ehci, but i thought it was fully fixed. i think there is also a 0.93 though that i may have lost :-/
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farrioth · Posted: Sat Jun 12, 2004 12:12 am Post subject:

Tried that, still the same problem.

tomthewombat · Posted: Thu Jun 17, 2004 10:40 pm Post subject:

Sorry been busy lately.

Does the light on your tower light up when you attempt a download via nqc?
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farrioth · Posted: Thu Jun 17, 2004 11:03 pm Post subject:

No, I only get the error. Nqc, it seems, cannot open the device, so it terminates.
The tower lights up when I plug it in, though.

tomthewombat · Posted: Fri Jun 18, 2004 12:26 am Post subject:

do you have proper permissions to /dev/usb/legousbtower0?

do you have legousb emerged even though 2.6 already contains the module?
you are using USE=usb to emerge nqc i believe you already said.

if you say yes to all these try this:
edit my nqc ebuild on the following line

epatch ${FILESDIR}/nqc-${PV}-${My_KV}.patch

to say:
epatch ${FILESDIR}/nqc-${PV}-2.6.patch

It seems to me either nqc doesn't know howto use usb, can't find /dev/usb/legousbtower0, is trying to access a different inode (eg. /dev/legotower0), or simply doesn't have access.

are you using the right command? 'nqc -Susb -d program'
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tomthewombat · Posted: Sun Jun 20, 2004 1:18 am Post subject:

Did you get it working okay? Or will this problem require a more in-depth solution? I'm very interested in working the bugs out.
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farrioth · Posted: Sat Jun 26, 2004 10:57 am Post subject:

Sorry, due to a bug in the forums, I have not recieved topic reply notifications about this topic, and did not know about your reply until I checked this topic manually.

The nqc ebuild does not contain the line "epatch ${FILESDIR}/nqc-${PV}-${My_KV}.patch"

tomthewombat · Posted: Mon Jun 28, 2004 3:25 am Post subject:

if you use the nqc ebuild (2.5.1-r1) in that package, it should contain that line. This patches nqc to use USB in linux.

I feel you pain about the email notifications :-p, by the way, hehe!
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farrioth · Posted: Mon Jun 28, 2004 5:18 am Post subject:

I was probably looking at 2.5.1, not 2.5.1-r1.

Still the same error.

JCDenton · n00b Joined: 25 Jan 2005 Posts: 8

will_in_wi · Tux's lil' helper Joined: 04 Feb 2004 Posts: 117

make a symlink from /dev/usb/legousbtower0 (or whatever it is) to /dev/tower0. I need to figure out how to make that a patch as I am having permission problems with symlinks and the most recent versions of udev.