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+--- Thread: Signal K permission denied cannot open /dev/ttyS0 (/showthread.php?tid=4291)
Signal K permission denied cannot open /dev/ttyS0 - fsarfatti - 2022-10-18
Hi All!
I installed a GPS with gpio in Raspberry 3 with OpenPlotter v2.
When I start Signal K, have following error:
"Error: Permission denied, cannot open /dev/ttyOP_gps2"
"/dev/ttyOP_gps2" is the alias of "/dev/ttyS0"
the problem is the mode permissions in /dev/ttyS0: crw--w---- root tty
I can modify that with sudo chmod 0666 /dev/ttyS0 and it works, but after a seconds it return to original permissions.
I tried to modify rules in /etc/udev/rules.d, inside files 10-openplotter.rules and 99-com.rules, and adding a new file local.rules, but the problem persists
thanks in advance!!!