Home
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
Utilities Reference
U
ubus_ctrl
USB Bus State Enable/Disable utility

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
- Quickstart Guide
- System Architecture
  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
- OS Components & Operations
- Graphics
- Programming
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.
- Utilities & Libraries
  - C Library Reference
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - QNX Helpers Developer's Guide
    These libraries provide QNX helpers, including helpers that assist with logging, string conversion, and number and type sizes.
  - SPI Framework Technote
  - Utilities Reference
    - Utility Conventions
    - A
    - B
    - C
    - D
    - E
    - F
    - G
    - H
    - I
    - J
    - K
    - L
    - M
    - N
    - O
    - P
    - Q
    - R
    - S
    - T
    - U
      - ubus_ctrl
        USB Bus State Enable/Disable utility
      - uesh
        Micro-embedded shell (QNX OS)
      - ulink_ctrl
        Control a USB DCD link
      - umask
        Get or set the file mode creation mask (POSIX)
      - umount
        Unmount a device
      - uname (host)
        Return the name of the operating system (POSIX)
      - uname (target)
        Print system information (POSIX, toybox)
      - uniq
        Report or filter out repeated lines in a file (POSIX, toybox)
      - unix2dos
        Convert newline format from Unix to DOS (POSIX, toybox)
      - unlink
        Call the unlink() function to delete a file
      - unxz, unlzma
        Decompress .xz and .lzma files
      - uptime
        Display the length of time that the system has been running
      - usb
        Display USB device configuration
      - use
        Print a usage message (QNX OS)
      - usemsg
        Change the usage message for a command (QNX OS)
      - uudecode
        Decode file from stdin (or infile) (POSIX, toybox)
      - uuencode
        Encode stdin (or infile) to stdout (POSIX, toybox)
      - uuidgen
        Create and print a new RFC4122 random UUID (POSIX, toybox)
    - V
    - W
    - X
    - Y
    - Z
    - Commonly Used Environment Variables
    - Selecting the Target System
    - Glossary
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
- Migrating to QNX OS 8.0
QNX Software in the Cloud
QNX Toolkit for Visual Studio Code
This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

ubus_ctrl

QNX SDP8.0Utilities ReferenceUtilities

USB Bus State Enable/Disable utility

Syntax:

ubus_ctrl -b busno -s [0|1] [-N name] [-w num]

Runs on:

QNX OS

Options:

-b busno: Display the devices on specific busno only.
-s 0|1: Set the USB bus state to off (0) or on (1).
-N name: Name of the USB manager to query; the default is /dev/usb/io-usb-otg.
-w num: Wait num seconds for the USB bus state stack (default is 60 seconds).

Description:

The ubus_ctrl utility sets the USB bus state to off or on for a usb controller driver after io-usb-otg starts. See io-usb-otg for details about the -d and -o options.

Examples:

Set the bus number to 0 and bus state to on:

ubus_ctrl -b 0 -s 1

Page updated: August 09, 2024