Re: Port devel/arduino serial port problems [SOLVED]
On 03/13/13 21:56, Arthur Chance wrote: I'm trying to get devel/arduino working.[snip] I shouldn't work 13 hour days. Now I've had some sleep, I've spotted what I missed last night. The underlying code from comms/rxtx is trying to create a lock file in /var/spool/lock and that is only writeable by user uucp and group dialer. Given that I have absolutely no serial devices (or ports) on this box apart from the Arduino when it's plugged in, can anyone see any problems with making the lock directory world writeable? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Port devel/arduino serial port problems [SOLVED]
On Thu, 14 Mar 2013 08:48:22 +, Arthur Chance wrote: On 03/13/13 21:56, Arthur Chance wrote: I'm trying to get devel/arduino working.[snip] I shouldn't work 13 hour days. Now I've had some sleep, I've spotted what I missed last night. The underlying code from comms/rxtx is trying to create a lock file in /var/spool/lock and that is only writeable by user uucp and group dialer. Given that I have absolutely no serial devices (or ports) on this box apart from the Arduino when it's plugged in, can anyone see any problems with making the lock directory world writeable? Simply add your user (or the account the program is running under) to the dialer group. This has been a common method to allow users to access dialing programs (which were reserved for root use without this group addition). -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Port devel/arduino serial port problems [SOLVED]
On 03/14/13 13:08, Warren Block wrote: On Thu, 14 Mar 2013, Polytropon wrote: On Thu, 14 Mar 2013 08:48:22 +, Arthur Chance wrote: On 03/13/13 21:56, Arthur Chance wrote: I'm trying to get devel/arduino working.[snip] I shouldn't work 13 hour days. Now I've had some sleep, I've spotted what I missed last night. The underlying code from comms/rxtx is trying to create a lock file in /var/spool/lock and that is only writeable by user uucp and group dialer. Given that I have absolutely no serial devices (or ports) on this box apart from the Arduino when it's plugged in, can anyone see any problems with making the lock directory world writeable? Simply add your user (or the account the program is running under) to the dialer group. This has been a common method to allow users to access dialing programs (which were reserved for root use without this group addition). This is also mentioned when the Arduino port is installed: To allow serial port locking, add your user to the dialer group: pw usermod myuser -G dialer Warren and Polytropon, thanks. I realised that this morning and added myself to dialer. I'd originally thought the requirement for dialler group was simply to access /dev/cuaU0 and wrote a devd.conf file to set that as mode 666. It was only after catching up with my sleep I thought of lock files. However, my point was a little more general than just fixing this specific access problem - many desktop machines these days don't have serial lines or any need for dialer programs, and adding yet another group to an ever increasing list just so that I can talk to an Arduino seems a little redundant. (As does using /var/spool/lock - isn't that what /dev/cuaU0.lock is for?) For anyone else thinking of playing with Arduinos on FreeBSD, this bug http://www.freebsd.org/cgi/query-pr.cgi?pr=163749 in avrdude bit me (on a 9.1-RELEASE-p1 amd64 machine, talking to an Arduino Uno R3). The second patch (patch-arduino.c) fixed the problem, but it's a shame it's not included in the port 14 months after it was submitted. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Port devel/arduino serial port problems [SOLVED]
On Thu, 14 Mar 2013 14:59:12 +, Arthur Chance wrote: However, my point was a little more general than just fixing this specific access problem - many desktop machines these days don't have serial lines or any need for dialer programs, and adding yet another group to an ever increasing list just so that I can talk to an Arduino seems a little redundant. Remember that this group isn't _that_ new, it has its own historical value. :-) Furthermore, if you consider PPPoE, what are you actually doing? You're _dialing_ (not with a phone number, not even through the serial port, but utilizing means of PPP) with your modem connected by an Ethernet cable. This mechanism also requires root privileges, except you are in the dialer group. :-) http://www.freebsd.org/doc/faq/serial.html (As does using /var/spool/lock - isn't that what /dev/cuaU0.lock is for?) No, those are actual devices, see man 4 uart for details. The subtree /var/spool is primarily used for things like mail and printer subsystems. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Port devel/arduino serial port problems
I'm trying to get devel/arduino working. Plugging in the USB cable to
the Arduino creates /dev/cuaU0* and /dev/ttyU0* and I'm manually
changing them to mode 666 while trying to get started so should be able
to access them as my normal user. However, the Tools = Serial Port menu
item in the Arduino IDE is always greyed out, and whatever I set
serial.port to in ~/.arduino/preferences.txt when trying to upload a
sketch I always get the error message
Serial port 'whatever serial.port is set to' not found.
Any hints and clues would be very welcome.
My system is 9.1-RELEASE-p1 and amd64
pkg info arduino shows
arduino-1.0.3_1,1 Open-source electronics prototyping platform
My /dev with the Arduino plugged in and a chmod a+rw done suitably:
fileserver# ls -l /dev/{cua,tty}U*
crw-rw-rw- 1 uucp operator0, 242 Mar 13 21:24 /dev/cuaU0
crw-rw-rw- 1 uucp operator0, 243 Mar 13 21:24 /dev/cuaU0.init
crw-rw-rw- 1 uucp operator0, 244 Mar 13 21:24 /dev/cuaU0.lock
crw-rw-rw- 1 root wheel 0, 239 Mar 13 21:24 /dev/ttyU0
crw-rw-rw- 1 root wheel 0, 240 Mar 13 21:24 /dev/ttyU0.init
crw-rw-rw- 1 root wheel 0, 241 Mar 13 21:24 /dev/ttyU0.lock
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