As the error says, your user doesn't have permission to read that device. The easiest way to get permission is to add a custom UDEV filter so UDEV will create the device with the right permissions.
See this: http://puredata.info/docs/faq/how-can-i-set-permissions-so-hid-can-read-devices-in-gnu-linux Off the top of my head, I would try the following UDEV line: DEV=="ttyACM*', MOD="666" That should basically mount all ttyACM devices with read permission for everyone. On Oct 8, 2014, at 7:09 PM, [email protected] wrote: > From: Alexandros Drymonitis <[email protected]> > Subject: [PD] [comport] ** ERROR ** could not open device /dev/ttyACM0: > failure(13): Permission denied > Date: October 8, 2014 at 11:10:42 AM EDT > To: "[email protected]" <[email protected]> > > > I have an Odroid which I use either with an SD card or an eMMC module, both > with the same OS (Debian Jessie for Odroid). In the SD card I've got > Pd-0.45-5 and in the eMMC module I've got Pd-0.46-0 installed. > With the SD card I can open the port /dev/ttyACM0 (I've got a Teensy 3.1 > plugged in via USB) but with the eMMC module I get this error: > "[comport] ** ERROR ** could not open device /dev/ttyACM0: > failure(13): Permission denied" > > Any idea why is that? And how can it be solved? > I've checked the /dev/ directory and the port exists in both the SD and the > eMMC. -------- Dan Wilcox @danomatika danomatika.com robotcowboy.com
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