[SOLVED]Serialport permission programmatically
In my application I'm using a virtual serial port which is actually a USB-UART converter chip. If it is connected it recognized as /dev/ttyUSBx, where x=0...3. Each time I want to use that particular port I have to fire up the terminal and look it up with dmesg | grep ttyUSB*, then sudo chmod 0666 ttyUSBx to gain access. How can I do this programmatically?
Simpler (and more secure) way: check the group of ttyUSB* (if on *buntu should be dialout) and add your user to that group (don't forget to logout/login).
If the group is root, add an udev rule to make so that the device gets another group and add your user to that group.
Hope it helps.
thank you for the tip! I added myself to the dialout group and after reboot my app was able to access the port. Cheers!