Could someone assist in identifying where I find information about how to customize this udev rule for different modem models? I think I may have been experiencing problems because I wasn’t paying attention to the fact that in this (https://www.balena.io/blog/balena-fin-gps-tracker-project) guide the writer was using a different Quectel modem model than what I’m using.
Writer used a EC25, I have a EG25-G.
For example, I believe the things I need to change include ATTRS{idProduct}==\"9003\"
and SYMLINK+=\"UC20.MODEM\"
But I’m not clear on where I find the specific values for different modems.
From the instructions:
"os": {
"udevRules": {
"20-quectel": "SUBSYSTEMS==\"usb\", ENV{.LOCAL_ifNum}=\"$attr{bInterfaceNumber}\"\n\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"05c6\", ATTRS{idProduct}==\"9003\", ENV{.LOCAL_ifNum}==\"01\", SYMLINK+=\"UC20.NMEA\", MODE=\"0660\"\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"05c6\", ATTRS{idProduct}==\"9003\", ENV{.LOCAL_ifNum}==\"02\", SYMLINK+=\"UC20.AT\", MODE=\"0660\"\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"05c6\", ATTRS{idProduct}==\"9003\", ENV{.LOCAL_ifNum}==\"03\", SYMLINK+=\"UC20.MODEM\", MODE=\"0660\"\n\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"2c7c\", ATTRS{idProduct}==\"0121\", ENV{.LOCAL_ifNum}==\"02\", SYMLINK+=\"EC21.AT\", MODE=\"0660\"\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"2c7c\", ATTRS{idProduct}==\"0121\", ENV{.LOCAL_ifNum}==\"03\", SYMLINK+=\"EC21.MODEM\", MODE=\"0660\"\n\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"2c7c\", ATTRS{idProduct}==\"0125\", ENV{.LOCAL_ifNum}==\"01\", SYMLINK+=\"EC25.NMEA\", MODE=\"0660\"\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"2c7c\", ATTRS{idProduct}==\"0125\", ENV{.LOCAL_ifNum}==\"02\", SYMLINK+=\"EC25.AT\", MODE=\"0660\"\nSUBSYSTEMS==\"usb\", KERNEL==\"ttyUSB[0-9]*\", ATTRS{idVendor}==\"2c7c\", ATTRS{idProduct}==\"0125\", ENV{.LOCAL_ifNum}==\"03\", SYMLINK+=\"EC25.MODEM\", MODE=\"0660\"\n\n"
}
}