Building the Sample Application
2
2-4 BUILDING THE SAMPLE APPLICATION
This section describes all the steps required to build a USB-based application. The
instructions provided in this section are not intended for any particular toolchain, but
instead are described in a generic way that can be adapted to any toolchain.
The best way to start building a USB-based project is to start from an existing project. If you
are using μC/OS-II or μC/OS-III, Micriμm provides example projects for multiple
development boards and compilers. If your target board is not listed on Micriμm’s web site,
you can download an example project for a similar board or microcontroller.
The purpose of the sample project is to allow a host to enumerate your device. You will add
a USB class instance to both, full-speed and high-speed configurations (if both are
supported by your controller). Refer to section 7-1 “Class Instance Concept” on page 99 for
more details about the class instance concept. After you have successfully completed and
run the sample project, you can use it as a starting point to run other USB class demos you
may have purchased.
μC/USB-Device requires a Real-Time Operating System (RTOS). The following assumes that
you have a working example project running on μC/OS-II or μC/OS-III.
2-4-1 UNDERSTANDING MICRIUM EXAMPLES
A Micriμm example project is usually placed in the following directory structure.
\Micrium
\Software
\EvalBoards
\<manufacturer>
\<board_name>
\<compiler>
\<project name>
\*.*
Note that Micriμm does not provide by default an example project with the μC/USB-Device
distribution package. Micriμm examples are provided to customers in specific situations. If it
happens that you receive a Micriμm example, the directory structure shown above is
generally used by Micriμm. You may use a different directory structure to store the
application and toolchain projects files.
31
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