I had similar problems with an AVR32 running as a CDC device. It turned out to be another program grabbing the port - a modem manager (from memory). I used synaptic to find and uninstall it. I've also read the ACM driver is buggy. I blacklisted it and use the general serial device driver. I found most of this on google.
> -----Original Message----- > From: sam sokolik [mailto:sa...@empirescreen.com] > Sent: Saturday, 3 December 2011 2:48 AM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] Arduino Communication issues > > I thought I would post this on the list as maybe others have run into this > issue. It is emc related although I don't think the problem is. I have an > arduino uno that I want to use mainly as a temperature input into emc. > (spindle temp) Plus it gives me some extra non realtime inputs and outputs. > > I Am playing around with what Jeff Epler had done here > http://emergent.unpythonic.net/01198594294 > > When I plug the arduino into the linux box (10.04) it shows up in dev as > ttyACM0. That is the port I put in the arduino-vcp.hal file. The arduion.py file > was renamed to arduino and put in the /bin dir and set as executable. I also > added myself to the dialout group. > > Now - when I halrun arduino-vcp.hal I usually have one of 3 outcomes. > > 1.) the pyvcp pannel opens and everthing seems to work correctly. 10% of > the time (estimate) > 2.) http://pastebin.com/qVa13VbE (pretty much says it could not open port > /dev/ttyACM0 but it is still showing in /dev) 89% of the time > 3.) http://pastebin.com/CvEBeCHg (seems to maybe be an issue with the > setup of pins within the arduino.py file) 1% of the time > > Now I have tried this on 2 different computer with the same result. It seems > the serial port gets locked some how. I did add some rules in the rules.d > directory with the same results.. (like I say - the port shows up in /dev) > > Seb had me run a trace on the port 'strace hd /dev/ttyACM0' and got > http://pastebin.com/SgMjTbpB > > I am still searching and searching but am coming up with not good solution > yet. > > Thanks! > sam > > ---------------------------------------------------------------------------- -- > All the data continuously generated in your IT infrastructure contains a > definitive record of customers, application performance, security threats, > fraudulent activity, and more. Splunk takes this data and makes sense of it. IT > sense. And common sense. > http://p.sf.net/sfu/splunk-novd2d > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
