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This section describes the examples that are related to the core component of Micrium OS USB Device.

Simple Initialization Example

This is a generic example for the USB device module. It accomplishes the following tasks:

  • Initialize the USB device core module
  • Add one USB device controller
  • Add a Full-Speed configuration to the device
  • Add a High-Speed configuration to the device (only if the device is High-Speed capable)
  • Initialize all the available class application example(s)
  • Start the device

This example is mandatory if you add any class application examples.

By default, this example will assume the presence of a USB controller named "usb0" and will attempt to add it. If this device is not present on your platform or you prefer to use another one, modify the define EX_USBD_CTRLR_NAME accordingly.

Location

The example implementation is located in /examples/usb/device/ex_usbd.h and /examples/usb/device/all/ex_usbd_all.c.

API

This application offers two API functions named Ex_USBD_Init() and Ex_USBD_Start(). The function Ex_USBD_Init() must be called by your application first. Once your application is ready to connect to the USB host, you can then call the function Ex_USBD_Start().