protocol.txt

Version Info:
	byte1:   length (always 4)
	byte2:   0x00
	byte3:   protocol version major
	byte4:   protocol version minor

Register Command or Data:
	byte1:   total data length 
		 If the dataref name is very long, it might not fit
		 in a single HID packet, which is limited to 64 bytes.
		 In this case, the first fragment fills up all the
		 remaining space in the first HID packet. Following
		 fragments are sent with byte2=0xff and complement
		 the name.
	byte2:   0x01
	byte3-4: identifier (assigned by Teensy)
	byte5:   type, 0=command, 1=integer, 2=float
	byte6:   reserved, use 0
	byte7-n: name

Fragmented packet continuation for long dataref names (see above):
	byte1:	 length of fragment
	byte2:   0xff
	byte3:   fragment counter
	byte4-n: data
	
Write Data:
	byte1:   length (always 10)
        byte2:   0x02
	byte3-4: identifier (assigned by Teensy)
	byte5:   type, 1=integer, 2=float
	byte6:   reserved, use 0
	byte7-10: data, lsb first

Enable/Disable:
	byte1:   length (always 4)
	byte2:   0x03
        byte3:   1=enable&send IDs, 2=enable, 3=disabled
        byte4:   reserved

Command Begin:
	byte1:   length (always 4)
	byte2:   0x04
	byte3-4: identifier (assigned by Teensy)

Command End:
	byte1:   length (always 4)
	byte2:   0x05
	byte3-4: identifier (assigned by Teensy)

Command Once:
	byte1:   length (always 4)
	byte2:   0x06
	byte3-4: identifier (assigned by Teensy)