USB 3.1 Gen1

Axon board includes two USB Type-C ports, each supporting USB 3.1 Gen 1 (5 Gbps) and DisplayPort output. This guide explains how to use and inspect Type-C USB 3.1 Gen1 interfaces on a Linux system.

../../../../_images/axon-usb3.webp

Basic Utilities and Commands

List Connected USB Devices

Use lsusb to displays information about USB buses and the devices connected to them.

vicharak@vicharak:~$ lsusb -t
/:  Bus 007.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 008.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M
|__ Port 001: Dev 002, If 0, Class=Mass Storage, Driver=uas, 5000M

What it shows:

  • USB Bus number (Bus 007, 008)

  • Device number (Device 001)

  • Vendor ID and Product ID (0bda:8153)

  • Manufacturer and device name

To get verbose information:

lsusb -v

To filter by a specific device ID:

lsusb -d <vendor>:<product>

Note

Also See: USB Device Speed and Topology.

Host/Device Mode detection

  • USB DRD (Dual-Role Device)

USB controller’s base address

Description

fc000000.usb

Type-C0

fc400000.usb

Type-C1

Go into root user by running su command. Default root password is root.

cat /sys/kernel/debug/usb/fc000000.usb/mode

It gives you on which mode usb port act as.

  • If user has connected pendrive to Axon on Type-C0 Port, it acts as host mode.

  • If user has connected Axon to Host pc on Type-C0 Port, it acts as device mode.

USB Command Reference

This section lists common Linux commands used to interact with USB devices.

Command

Description

lsusb

List USB devices

usb-devices

Detailed USB device info

dmesg

Kernel logs and hotplug info

mount

Mount USB storage device

Note

Speed values:

  • 1.5 Mbps - USB 1.1 (Low Speed)

  • 12 Mbps - USB 1.1 (Full Speed)

  • 480 Mbps - USB 2.0 (High Speed)

  • 5000 Mbps - USB 3.0 / USB 3.1 Gen1 (SuperSpeed)