I just captured all buttons on my FireTV remote.
Hope this can help somebody who is trying to use adnroidtv integration.
On my side this did not work very well. Commands are slow and sometimes are lost.
Down
sendevent /dev/input/event5 4 4 458833 && sendevent /dev/input/event5 1 108 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 458833 && sendevent /dev/input/event5 1 108 0 && sendevent /dev/input/event5 0 0 0
up
sendevent /dev/input/event5 4 4 458834 && sendevent /dev/input/event5 1 103 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 458834 && sendevent /dev/input/event5 1 103 0 && sendevent /dev/input/event5 0 0 0
right
sendevent /dev/input/event5 4 4 458831 && sendevent /dev/input/event5 1 106 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 458831 && sendevent /dev/input/event5 1 106 0 && sendevent /dev/input/event5 0 0 0
left
sendevent /dev/input/event5 4 4 458832 && sendevent /dev/input/event5 1 105 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 20 0 0 && sendevent /dev/input/event5 20 1 0 && sendevent /dev/input/event5 4 4 458832 && sendevent /dev/input/event5 1 105 0 && sendevent /dev/input/event5 0 0 0
confirm button
sendevent /dev/input/event5 4 4 458840 && sendevent /dev/input/event5 1 96 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 458840 && sendevent /dev/input/event5 1 96 0 && sendevent /dev/input/event5 0 0 0
livetv
sendevent /dev/input/event5 4 4 786573 && sendevent /dev/input/event5 1 362 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786573 && sendevent /dev/input/event5 1 362 0 && sendevent /dev/input/event5 0 0 0
back / return
sendevent /dev/input/event5 4 4 458993 && sendevent /dev/input/event5 1 158 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 458993 && sendevent /dev/input/event5 1 158 0 && sendevent /dev/input/event5 0 0 0
rewind
sendevent /dev/input/event5 4 4 786612 && sendevent /dev/input/event5 1 168 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786612 && sendevent /dev/input/event5 1 168 0 && sendevent /dev/input/event5 0 0 0
fast forward
sendevent /dev/input/event5 4 4 786611 && sendevent /dev/input/event5 1 208 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786611 && sendevent /dev/input/event5 1 208 0 && sendevent /dev/input/event5 0 0 0
mute
sendevent /dev/input/event5 4 4 786658 && sendevent /dev/input/event5 1 113 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786658 && sendevent /dev/input/event5 1 113 0 && sendevent /dev/input/event5 0 0 0
vol up
sendevent /dev/input/event5 4 4 786665 && sendevent /dev/input/event5 1 115 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786665 && sendevent /dev/input/event5 1 115 0 && sendevent /dev/input/event5 0 0 0
vol down
sendevent /dev/input/event5 4 4 786666 && sendevent /dev/input/event5 1 114 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786666 && sendevent /dev/input/event5 1 114 0 && sendevent /dev/input/event5 0 0 0
on/off
sendevent /dev/input/event5 4 4 458854 && sendevent /dev/input/event5 1 116 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 458854 && sendevent /dev/input/event5 1 116 0 && sendevent /dev/input/event5 0 0 0
context menu
sendevent /dev/input/event5 4 4 786496 && sendevent /dev/input/event5 1 139 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786496 && sendevent /dev/input/event5 1 139 0 && sendevent /dev/input/event5 0 0 0
alexa
sendevent /dev/input/event5 4 4 786977 && sendevent /dev/input/event5 1 217 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786977 && sendevent /dev/input/event5 1 217 0 && sendevent /dev/input/event5 0 0 0
prime video
sendevent /dev/input/event5 1 745 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 1 745 0 && sendevent /dev/input/event5 0 0 0
netflix
sendevent /dev/input/event5 1 744 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 1 744 0 && sendevent /dev/input/event5 0 0 0
disney plus
sendevent /dev/input/event5 1 746 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 1 746 0 && sendevent /dev/input/event5 0 0 0
amazon music
sendevent /dev/input/event5 1 747 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 1 747 0 && sendevent /dev/input/event5 0 0 0
play pause
sendevent /dev/input/event5 4 4 786637 && sendevent /dev/input/event5 1 164 1 && sendevent /dev/input/event5 0 0 0 && sendevent /dev/input/event5 4 4 786637 && sendevent /dev/input/event5 1 164 0 && sendevent /dev/input/event5 0 0 0