DECODE

Bytes:    0-1  2-3  4  5  6  7  8-9
Ex. data: 0000 3F01 04 7C 00 00 0000
          AABB CCDD EE FF GG HH IIJJ

Decode:
0-1.  Wind speed: hex2dec(BB AA) / 100
2-3.  Wind direction: hex2dec(DD CC)
4.    Battery level: hex2dec(EE) * 10
5.    Temp level: hex2dec(FF) - 100
6.    Roll: hex2dec(GG) - 90
7.    Pitch: hex2dec(HH) - 90
8-9.  Compass: 360 - hex2dec(JJ II)

Ex.
0-1.  hex2dec(00 00) => 0 / 100 => 0
2-3.  hex2dec(01 3F) => 319 (degrees)
4.    hex2dec(04) => 4 * 10 => 40%
5.    hex2dec(7C) => 124 - 100 => 24 (degrees C)
6.    hex2dec(00) => 0 - 90 => -90 (degrees)
7.    hex2dec(00) => 0 - 90 => -90 (degrees)
8-9.  360 - hex2dec(00 00) => 360 - 0 => 360

Before calculating values:
- Check mode (characteristic 0xA001); 0 = sleep, 1 = low power, 2 = normal (set if required)
- Check wind check speed (characteristic 0xA002); 0x01, 0x04, 0x08 Hz (change if required)
- Check status of e-compass e/o (characteristic 0xA003); 0x01 = on, 0x00 = off. If off, don't transmit values roll, pitch, compass