working keyboard.xml

<keymap>
  <global>
    <joystick name="Shield Remote">
      <button id="1">Up</button>
      <button id="2">Down</button>
      <button id="3">Left</button>
      <button id="4">Right</button>
      <button id="5">Select</button>
      <button id="6">Back</button>
      <button id="7">ContextMenu</button>
    </joystick>
  </global>
  <FullscreenVideo>
   <joystick name="Shield Remote">
     <button id="1">VolumeUp</button>
     <button id="2">VolumeDown</button>
     <button id="3">StepBack</button>
     <button id="4">StepForward</button>
     <button id="5">OSD</button>
   </joystick>
  </FullscreenVideo>
  <SlideShow>
   <joystick name="Shield Remote">
     <button id="1">ZoomIn</button>
     <button id="2">ZoomOut</button>
     <button id="3">PreviousPicture</button>
     <button id="4">NextPicture</button>
     <button id="5">Rotate</button>
   </joystick>
  </SlideShow>
</keymap>