Specifications

The serial number of the fragment does not correspond to that expected.

• Fragment - total number error

Information about the total number of fragments does not correspond to the previous fragment.

• Fragment - source address error

The received fragment is from another source address (serial number of radio modem) than the

previous fragment.

• Fragment - receive timeout

The next fragment (does not apply to the first one) did not arrive within the timeout period (timeout

is given by the transmission time of a single fragment in RFC).

• Fragmented packet being transmitted -> new packet delayed

Transmission of a packet has been held up (the packet is stored in the input buffer) owing to

transmission or receipt of a fragmented packet. During receipt this doesn't apply to the first fragment

(it is not yet known that it is a fragment).

• Fragment - missing first fragment

A fragment not marked as the first has been received (and the first hasn't yet been received).

• Compression inflate error

Packet decompression error.

• Compression deflate error

Packet compression error.

• Receive process interrupted

Received data is damaged because transmission occurred during receipt.

• (ERR2) - header corrupted

FPGA does not understand the packet header (another version of the protocol in the air or interfer-

ence).

• (CRC16) - header corrupted

CRC16 didn't appear in the header of the received packet.

• (CRC32) - data corrupted

CRC32 didn't appear in the data of the received packet.

The following messages only for Number of repeaters > 0 :

• Returned packet -> discarded (for NoR>0)

The same packet that was sent arrived back during the timeout period.

• Same packet -> discarded (for NoR>0)

The same packet, but with a different source address, was repeatedly received during the timeout

period.

• TX delayed -> new packet delayed (for NoR>0)

Packet transmission has been held up owing to activation of delays related to the repeater.

• TXbuf full -> new packet discarded (for NoR>0)

A packet for sending is already waiting in the input buffer. A new one is therefore discarded.

Description