USB HID Generic Example

This information applies to the nRF52840 SoC only.

This example uses the USB HID class modules. See the documentation of these modules for links to relevant specification documents.

This example shows how to use the HID generic class. Generic protocol is used when user-defined reports are exchanged between the USB host and the device. The example shows how to handle a HID mouse like device using the HID generic protocol.

Setup

You can find the source code and the project file of the example in the following folder: <InstallFolder>\examples\peripheral\usbd_hid_generic

LED assignments:

• LED 1 shows the USB bus state:
  • ON: State RESUME
  • OFF: State SUSPEND
• LED 2 shows the USB device library status:
  • ON: USB library STARTED
  • OFF: USB library STOPPED
• LED 3 shows that a USB HID report IN has been sent:
  • TOGGLE - Report sent

Button assignments:

• Button 1 moves the HID generic mouse cursor in the x-axis.
• Button 2 moves the HID generic mouse cursor in the y-axis.
• Button 3 presses the HID generic mouse left button.
• Button 4 presses the HID generic mouse right button.

Testing

Test the USB HID Generic Example application by performing the following steps:

1. Compile and program the application.
2. Connect the development kit to the host computer.
3. The device will enumerate as a HID mouse class.
4. Press the buttons on the development kit and observe results on the host computer and on the LEDs.