assign static ttyUSB

0
votes

I have 2 USB devices connected to raspberry pi,

  1. CP2108 USB to serial converter which has 4 ports, when I connect to usb I get 4 ttyUSBx

  2. EC25 GSM modem, for this also same case. when I connect I get 4 ports.

How do I assign a static name to all of them?

I have used bellow method but no result.

SUBSYSTEM=="tty", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", SYMLINK+="ttyUSB_EC25_Modem_%s{devpath}"
SUBSYSTEM=="tty", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea71", SYMLINK+="ttyUSB_CP2108X_%s{devpath}"
1
linuxraspberry-pidebianraspberry-pi3raspbian

1 Answers

2
votes

Connect the devices and look under /dev/serial/by-id/. You should have symlinks to these ttyUSBx devices with longer and more descriptive names. No need to use udev rules.