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µC/USB-Device depends on other modules, and you need to install all the required modules before building your application. Depending on the availability of support for your hardware platform, ports and drivers may or may not be available for download from the customer portal. Table - µC/USB-Device Module Dependency shows the module dependency for µC/USB-Device.
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| Module Name | Required | Note(s) |
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| µC/USB-Device Core | YES | Hardware independent USB stack. | | µC/USB-Device Driver | YES | USB device controller driver. Available only if Micrium supports your controller, otherwise you have to develop it yourself. | | µC/USB-Device Audio Class | Optional | Available only if you purchased the Audio class. | | µC/USB-Device CDC ACM | Optional | Available only if you purchased the Communication Device Class (CDC) with the Abstract Control Model (ACM) subclass. | | µC/USB-Device CDC EEM | Optional | Available only if you purchased the Communication Device Class (CDC) Ethernet Emulation Model (EEM) subclass. | | µC/USB-Device HID Class | Optional | Available only if you purchased the Human Interface Device (HID) class. | | µC/USB-Device MSC | Optional | Available only if you purchased the Mass Storage Class (MSC). | | µC/USB-Device PHDC | Optional | Available only if you purchased the Personal Healthcare Device Class (PHDC). | | µC/USB-Device Vendor Class | Optional | Available only if you purchased the Vendor class. | | µC/CPU Core | YES |
| | µC/CPU Port | YES | Available only if Micrium has support for your processor architecture. | | µC/LIB Core | YES | Micrium run-time library. | | µC/LIB Port | Optional | Available only if Micrium has support for your processor architecture. | | µC/OS-II Core | Optional | Available only if your application is using µC/OS-II. | | µC/OS-II Port | Optional | Available only if Micrium has support for your processor architecture. | | µC/OS-III Core | Optional | Available only if your application is using µC/OS-III. | | µC/OS-III Port | Optional | Available only if Micrium has support for your processor architecture. |
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Table - µC/USB-Device Module Dependency indicates that all the µC/USB-Device classes are optional because there is no mandatory class to purchase with the µC/USB-Device Core and Driver. The class to purchase will depend on your needs. But don’t forget that you need a class to build a complete USB project. also Table - µC/USB-Device Module Dependency also indicates that µC/OS-II and -III Core and Port are optional. Indeed, µC/USB-Device stack does not assume a specific real-time operating system to work with, but it still requires one.
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Once all the distribution packages have been downloaded to your host machine, extract all the files at the root of your C:\ drive for instance. The package may be extracted to any location. After extracting all the files, the directory structure should look as illustrated in Figure - Directory Tree for µC/USB-Device. In the example, all Micrium products sub-folders shown in will Figure - Directory Tree for µC/USB-Device will be located in C:\Micrium\Software\.
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