AN3375 datasheet(63/73 Pages) STMICROELECTRONICS

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AN3375

M24LRXX-R Layer

Doc ID 018637 Rev 1

63/73

4.4.5

M24LRXX_FastReadMultipleBlock function

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

to M24LRXX-R devices.

The protocol extension flag is forced to ‘1’.

4.4.6

M24LRXX_FastInventoryInitiated function

This function sends a Fast Inventory Initiated command to a contactless tag. It is specific to

M24LRXX-R devices.

Table 98.

M24LRXX_FastReadMultipleBlock function description

Function description

Protocol

result = int8_t

M24LRXX_FastReadMultipleBlock (uc8

Flags, uc8 *UIDin, uc8 *BlockNumber, uc8

NumberOfBlock,uc8 AppendCRC, uc8

*CRC16,uint8_t *pResponse );

Input parameter

Flags: request flags

UIDin: pointer to contactless tag UID

BlockNumber: block index

NumberOfBlock : number of blocks to read

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 99.

M24LRXX_FastInventoryInitiated function description

Function description

Protocol

result = int8_t

M24LRXX_FastInventoryInitiated (uc8

Flags, uc8 AFIin, uc8 MaskLength,uc8

*Mask,uc8 AppendCRC, uc8 *CRC16,uint8_t

*pResponse );

Input parameter

Flags: request flags

AFI: AFI word

MaskLength: number of bit of mask

MaskValue: mask

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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