mirror of
https://github.com/Brandon-Rozek/website.git
synced 2024-11-25 01:26:30 -05:00
38 lines
No EOL
1.2 KiB
Markdown
38 lines
No EOL
1.2 KiB
Markdown
---
|
||
title: "Custom Device Paths with UDEV rules"
|
||
date: 2020-11-10T20:58:37-05:00
|
||
draft: false
|
||
tags: ["Linux"]
|
||
medium_enabled: true
|
||
---
|
||
|
||
I wanted to create a rule so that when I plug in my rtlsdr, a symlink to the device will appear in `/dev/rtlsdr`.
|
||
|
||
To do this, first we need to get some uniquely identifying information about the SDR.
|
||
|
||
```bash
|
||
❯ lsusb
|
||
Bus 001 Device 002: ID 8087:8001 Intel Corp. Integrated Hub
|
||
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
|
||
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
|
||
Bus 002 Device 017: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
|
||
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
|
||
```
|
||
|
||
The part we care about here is the ID field. It is structured as `ID vendor:product`.
|
||
|
||
Now we can create a UDEV rule in `/etc/udev/rules.d/` that says "when we see this specific USB plugged in, create a symlink called `rtlsdr`"
|
||
|
||
(/etc/udev/rules.d/rtlsdr.rules)
|
||
|
||
```
|
||
SUBSYSTEM=="usb", ATTR{idVendor}=="0bda", ATTR{idProduct}=="2838", SYMLINK+="rtlsdr"
|
||
```
|
||
|
||
Tell udev to reload its rules
|
||
|
||
```bash
|
||
sudo udevadm control --reload
|
||
```
|
||
|
||
Now once you have your device plugged in, you should be able to see it under `/dev/rtlsdr` or whatever you specified your symlink as. |