Module gs1::epc::tid

Decoder for EPC Tag Identification data

The TID is a memory area on a Gen2 RFID tag which contains the manufacturer identification and capabilities of the tag.

As Gen2 tags will refuse an out-of-bounds read, the TID memory must be read from the tag and decoded progressively. Decoding the TID structure (4 bytes / 2 words) will indicate whether the XTID header (2 bytes / 1 word) is present and can be read. The XTID header then determines which of the subsequent data structures are present.

Reference

GS1 EPC TDS Section 16

Structs

TID	Tag Identification
XTIDHeader	Extended Tag ID header

Functions

decode_tid	Decode the TID structure from bytes
decode_xtid_header	Decode the XTID header from bytes
mdid_name	Look up a mask designer ID and return a string of the manufacturer name
tmid_name	Look up the model name of a tag given the MDID and TMID.