ST95HF datasheet(73/93 Pages) STMICROELECTRONICS

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ST95HF

Examples of ST95HF command code to activate NFC Forum and ISO/IEC 15693 tags

REM, Tag 2 --> UID = 043B114AEF2280

REM, Response When 2 tags are present NVB = nb Byte OK + nb bit OK

REM, Collision

REM, First Byte Coll 02 (3 eme Byte) (8804 ok)

REM, Index bit Coll 04 (5eme bit) => SN finish by 0 or 1

REM,

set NVB = 45

REM,

REQA

Poll

field with Two tags In operating volume

>>> CR95HFDLL_STCMD, 01 04022607

<<< 80 05

4403 280000

REM,

Ant CL1

Collision Detection (NVB 20) none data on UID

REM, Response Flag F1=B8

F2=02 F3=04

REM,

F1=B8 collision detected 8 bits significatifs in first byte of

response

REM,

F2=02

collision detected in 3rd response byte, index start at

REM,

F3=04 collision detected on 5th bit, index start at 0

>>> CR95HFDLL_STCMD, 01 0403932008

<<< 80 08

88047B75B7 B80204

REM,

Collision Management Usage of split frame with NVB = 45 4bytes

+ 5 lsb bit OK in next byte

REM,

last bit (collision one)

arbitrary fixed to select only one

branch of UID tree

REM,

padding of last byte with zeros as msb (tranmission lsb first)

REM,

command flag 45 usage of Split Frame (4) with 5 bits

significatif in last byte

REM,

uncomplete response byte is padded with 0 as lsb bits

REM,

Response Flag F1=23

F2=00 F3=00

REM,

F1=23, No collision

REM,

3 bit significatif (msb last received bits) in first response

byte 40

REM,

F2=00, not significant

REM,

F3=00, not significant

>>> CR95HFDLL_STCMD, 01 0406934588040B45

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