Stefal
self-recognition USB communication device by vendor and product (/dev/tty...)
/dev/ttyACM0 is not a sure value, it is possible to fix a generic mounting point like /dev/ttyGNSS using the idVendor and the idProduct of the connected card.
On a raspbian (Debian) distribution, the file to modify is located here:
/etc/udev/rules.d/99-com.rules
for example by adding this configuration line to 99-com.rules , the drotek DP0601 receiver connected in USB will always have a mount point equal to /dev/ttyGNSS :
SUBSYSTEM=="tty", ATTRS{idVendor}=="1546", ATTRS{idProduct}=="01a9", SYMLINK+="ttyGNSS"
To know the idVendor and the idProduct of a material:
sudo cat /sys/kernel/debug/usb/devices | grep -E "^([TSPD]:.*|)$"
example of use on building image for raspberry:
https://github.com/jancelin/pi-gen/commit/84c3a3607ee23b48563372505384865d3e1b36b7#diff-7a3cbbae1f6bffa1769577936cbd17d22be746f03df2c218e2c3acd872934598
https://github.com/jancelin/pi-gen/commit/84c3a3607ee23b48563372505384865d3e1b36b7#diff-277e41b735be4ef44428e3033a6a1061111abd5566e37df1312b9631eb1ec8c4
:+1: Works well. Since the rule is in rules.d folder you could create a new file instead of modifying existing one. It could help to deploy, avoid modifying original 99-com-rules and doesn't require the use of sed or other in custom deployment.
Symlink could be shown with :
basegnss@basegnss:~ $ ls -lsa /dev/ttyGNSS
0 lrwxrwxrwx 1 root root 7 Nov 23 16:00 /dev/ttyGNSS -> ttyACM0
