Experimental Physics and
Industrial Control System

I'm not sure, but I think you can just change the permissions on the device as root?
 
vincent> su
Password: 
[root@vincent epics]# ls -l /dev/ttyS0
crw-rw----  1 root uucp 4, 64 Apr 21 17:17 /dev/ttyS0
[root@vincent epics]# chmod o+rw /dev/ttyS0
[root@vincent epics]# ls -l /dev/ttyS0
crw-rw-rw-  1 root uucp 4, 64 Apr 21 17:17 /dev/ttyS0

See if that fixes the problem.
 
Mark
 

________________________________

From: [email protected] on behalf of zhangdemin99
Sent: Tue 6/5/2007 9:18 PM
To: tech-talk
Subject: problems in running application(ASYN)


Dear all,
  I have built ASYN on my computer, but there are some problems when running application. It said: \dev/ttyS0 can't open Permission denied
  Should I open the serial port in the Linux first or  is there  another problems? what should I do next?
 
many thanks in advance.
 
                                     demin zhang
 
 
 
 
 


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