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Permission denied when opening serialport
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Hi guys:
Why I always get "Permission denied", when my program is opening serial port?? How to enable the permission?? I tried to key chmod 777 /dev/ttyUSB0, but it was not working.
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What are the exact permission on that device ?
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I am not sure, because i use errorString() function in the QSerialPort and it shows permission denied.
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What does a ls -la return ?
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In this case, a reason maybe is in that need to delete a lock file (of course if a lock file exists)...
