As I have multiple serial-TTL adapters connected to the same host, and to identify then easily (instead of ttyS0, ttyS1...), I use custom udev rules.
In /etc/udev/rules.d
, create a custom rule file:
# LINKY
ACTION=="add", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015", SYMLINK+="LINKY"
Copy linky.service
fie to /lib/systemd/system/linky.service
.
Then type systemctl enable linky