Connect to a USB Device for Bus Scope: Setup and Workflow Guide
Select the capture adapter
Bus Scope auto-detects available capture sources:
- Linux usbmon — kernel-level USB monitoring. Requires usbmon module loaded and user permissions.
- Windows USBPcap — driver-level capture. Requires USBPcap installed and root hub selected.
If no adapter appears, check the platform capability message in the status bar — it tells you what is and isn't available.
Linux setup
sudo modprobe usbmon
sudo chmod a+r /sys/kernel/debug/usb/usbmon/*
Or add your user to the appropriate group for permanent access.
Windows setup
Install USBPcap from the Wireshark installer or standalone package. After installation, identify which root hub your device is connected to in Device Manager.
First capture
- Connect your USB device
- Select the capture adapter
- Choose the device from the device list
- Start capture
- Perform the action that triggers the USB behavior you need to debug
- Stop capture and inspect the timeline