The metadata contains information about the packet that is used by the radio
stack. Like you said, it is not transmitted as part of the packet, but
rather contains side-note information about the packet.
The metadata fields are all 0's at boot time, because they haven't been
initialized.
Hello David :
i got some datas from serial port :
00 FF FF 00 08 1A 00 06 00 03 26 88 41 01 00 22 FF FF 00 08 06 EF 6B 00 01
00 2B 31 00 00 00 00 00 00
00 FF FF 00 08 1A 00 06 00 04 26 88 41 02 00 22 FF FF 00 08 06 EF 6B 00 01
00 99 50 00 00 00 00 00 00
00 FF FF 00 08 1A 00 06 00 05 26 88 41 03 00