AN3375 datasheet(62/73 Pages) STMICROELECTRONICS

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M24LRXX-R Layer

AN3375

62/73

Doc ID 018637 Rev 1

4.4.3

M24LRXX_PresentSectorPassword function

This function sends a Present Sector Password command to a contactless tag. It is specific

to M24LRXX-R devices.

4.4.4

M24LRXX_FastReadSingleBlock function

This function sends a Fast Read Single Block command to a contactless tag. It is specific to

M24LRXX-R products.

The protocol extension flag is forced to ‘1’.

Table 96.

M24LRXX_PresentSectorPassword function description

Function description

Protocol

result = int8_t

M24LRXX_PresentSectorPassword(uc8

Flags, uc8 *UIDin, uc8

PasswordNumber,uc8 *Password,uc8

AppendCRC, uc8 *CRC16,uint8_t

*pResponse );

Input parameter

Flags: request flags

UIDin: pointer to contactless tag UID

PasswordNumber: password index

Password: pointer to password to test

AppendCRC: CRC16 management

CRC16: pointer to user CRC16

Output parameter

pResponse: pointer to CR95HF response

Return parameter

ERRORCODE_GENERIC: a parameter value is erroneous

or CR95HF returns an error code

RESULTOK: CR95HF returns a succeeded code

Table 97.

M24LRXX_FastReadSingleBlock function description

Function description

Protocol

result = int8_t

M24LRXX_FastReadSingleBlock (uc8 Flags,

uc8 *UIDin, uc8 *BlockNumber,uc8

AppendCRC, uc8 *CRC16,uint8_t

*pResponse );

Input parameter

Flags: request flags

UIDin: pointer to contactless tag UID

BlockNumber: block index

AppendCRC: CRC16 management

CRC16: pointer to user CRC16

Output parameter

pResponse: pointer to CR95HF response

Return parameter

ERRORCODE_GENERIC: a parameter value is erroneous

or CR95HF returns an error code

RESULTOK: CR95HF returns a succeeded code

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