USB Library
Host - HID - Keyboard Demo

Supported Demo Boards 

The matrix of which demos are supported on a specific board can be found in the Release Notes demo board support section. Verify that the board you wish to use will work with this demo. This table also describes some of the limitations that the board might have while running this demo. 

Demo Board I/O Mapping 

Each demo board has a different number of push buttons, LEDs, and other features with various different names for these components. To determine which board features are used for which demo features, please refer to the io_mapping.h file in the demo folder under the system_config folder. Each demo board will have a corresponding folder with an io_mapping.h file in it. For example, for the PIC24FJ256GB110 PIM for the Explorer 16, this would be the following file: 

<install_directory>/apps/usb/host/hid_keyboard/firmware/src/system_config/exp16/pic24fj256gb110_pim/io_mapping.h 

For more information about each demo board, please refer to the Demo Board Information section

Demo Operation 

When the device is programmed correctly with the HID host keyboard application the LCD screen on the Explorer 16 should read “Device Detached” if there is no device attached to the USB port. At this point plug in a USB keyboard, bar code scanner that supports HID keyboard emulation, or magnetic card reader that supports HID keyboard emulation. Type a key on the keyboard. This character should be printed on the LCD screen. Pressing the “ESC” key will clear the screen and return the cursor to the first position.

Limitations:
  • Neither compound nor composite devices are supported. Some keyboards are either compound or composite.
  • The “~” prints as an arrow character instead (“->”). This is an effect of the LCD screen on the Explorer 16. The ascii character for “~” is remapped in the LCD controller.
  • The “\” prints as a “¥” character instead. This is an effect of the LCD screen on the Explorer 16. The ascii character for “\” is remapped in the LCD controller.
  • Backspace and arrow keys may have issues on Explorer 16 boards with certain LCD modules
 
MLA - USB Library Help Version : 2.16
http://www.microchip.com/mla