[Cialug] udev help

[David Champion]

I'm not much help on NXT... I have an original Mindstorm kit that uses the
serial / IR tower to communicate with it.

What are you planning to use with it? I had messed around with NQC (Not
Quite C) and it worked fairly well, but it's been a few years since I've
used it. Looks like there's a version that will work with the NXT called
NXC.

http://bricxcc.sourceforge.net/nbc/

-dc

On Sun, Dec 26, 2010 at 10:56 AM, Chris Freeman <cwfreeman at gmail.com> wrote:

> I'm trying to write a udev rule to hook up my Christmas present to my
> computer.
>
> The /dev/legonxt symlink (see rule) is never created, and the
> /tmp/legonxt.called file (see script) is never created.
>
> Any ideas?
>
> ----- details ------
>
> udevadm info tells me this:
> $ udevadm info -a -p /sys/devices/LNXSYSTM\:00/
> <cut some plain text...>
>
>   looking at device '/devices/LNXSYSTM:00':
>     KERNEL=="LNXSYSTM:00"
>     SUBSYSTEM=="acpi"
>     DRIVER==""
>     ATTR{path}=="\"
>     ATTR{hid}=="LNXSYSTM"
>     ATTR{modalias}=="acpi:LNXSYSTM:"
>
>
> I've got this in /etc/udev/rules.d/90-legonxt.rules:
> SUBSYSTEM=="acpi", ATTR{hid}=="LNXSYSTM", SYMLINK+=”legonxt”,
> ACTION=="add", RUN+=”/etc/udev/legonxt.sh”
>
> The shell file:
>
> $ ls -l /etc/udev/legonxt.sh
> -rwxr-xr-x 1 root root 327 2010-12-26 10:35 /etc/udev/legonxt.sh
>
> $ cat /etc/udev/legonxt.sh
> #!/bin/bash
>
> echo "Called legonxt.sh ..." >> /tmp/legonxt.called
> echo "  ACTION=[${ACTION}]" >> /tmp/legonxt.called
> echo "  DEVICE=[${DEVICE}]" >> /tmp/legonxt.called
>
> GROUP=plugdev
> if [ "${ACTION}" = "add" ] &amp;&amp; [ -f "${DEVICE}" ]
> then
>  chmod o-rwx "${DEVICE}"
>  chgrp "${GROUP}" "${DEVICE}"
>  chmod g+rw "${DEVICE}"
> fi
>
>
>
> Thanks,
>
> Chris
>
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