I’m following the instructions on the wiki here. When I get to the step that says to run:
./lora_pkt_fwd -c global_conf.json.sx1250.US915
I see this in the output:
WARNING: [main] impossible to open /dev/ttyS0 for GPS sync (check permissions)
… when I do ls -la /dev/ttyS0 I see this output:
crw-rw---- 1 root dialout 4, 64 Jan 13 14:58 /dev/ttyS0
So I added my user to the dialout group for good measure, by doing sudo usermod -aG dialout $USER but still get that warning.
Then I tried:
cat /dev/ttyS0
cat: /dev/ttyS0: Input/output error
and I tried minicom -D /dev/ttyS0 -b 9600 but got no output at all
What am I missing?