USBX Device Stack User Guide

This guide provides comprehensive information about USBX, the high performance USB foundation software from Eclipse Foundation.

It is intended for the embedded real-time software developer. The developer should be familiar with standard real-time operating system functions, the USB specification, and the C programming language.

For technical information related to USB, see the USB specification and USB Class specifications that can be downloaded at https://www.usb.org/developers.

Organization

  • Chapter 1 - contains an introduction to USBX.
  • Chapter 2 - gives the basic steps to install and use USBX.
  • Chapter 3 - describes the functional components of the USBX device stack.
  • Chapter 4 - describes the USBX device stack services.
  • Chapter 5 - describes each USBX device class including their APIs.

Troubleshooting

For troubleshooting, be sure to collect the following information:

  1. A detailed description of the problem, including frequency of occurrence and whether it can be reliably reproduced.
  2. A detailed description of any changes to the application and/or ThreadX that preceded the problem.
  3. The contents of the _tx_version_id string found in the tx_port.h file of your distribution. This string provides valuable information regarding your run-time environment.
  4. The contents in RAM of the _tx_build_options ULONG variable. This variable gives information on how your ThreadX library was built.