AN3985 datasheet(64/105 Pages) STMICROELECTRONICS

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LRIxK layer

AN3985

64/105

Doc ID 022255 Rev 2

LRIxK_Lock_Kill function

This function sends, through the CR95HF, a lock kill command to an LRIxK contactless tag

present in the RF field or designated by its UID.

Note:

The kill code written previously is locked by the LRIxK contactless tag and, once done, the

kill code cannot be changed.

LRIxK_Inventory_Initiated function

This function sends, through the CR95HF, an initiate command to an LRIxK contactless tag

present in the field or designated by its UID. On receiving the initiate command, the LRIxK

contactless tag sets the internal initiate flag (to send an inventory initiated command) and

returns its UID and its DSFID.

Table 110.

LRIxK_Lock_Kill function description

Prototype

u8 LRIxK_Lock_Kill(ISO15693_Tag* MyTag, u8

Request_flags, u8* Tag_UID);

Input parameter

Request_flags: option flag to indicate the parameters to use for the flag

response and if UID is present (addressed)

Tag_UID: pointer on the UID of the tag

Output parameter

MyTag: pointer on the structure that contains the tag response

Return parameter

LRIxK_ERROR_CODE: The command failed. Either there is no tag or the tag

did not manage to perform the request.

LRIxK_ERROR_REQUEST_FLAGS_CODE: The inventory flag is set.

LRIxK_COMMAND_SUCCESS_CODE: The tag answered the command.

Table 111.

LRIxK_Inventory_Initiated function description

Prototype

u8 LRIxK_Inventory_Initiated(ISO15693_Tag* MyTag,

const u8 Request_flags, const u8 Tag_AFI, const u8

MaskLength, const u8* Mask, u8*

Inventory_16_slots_Nb_UID_Retrieved);

Input parameter

Request_flags: option flag to indicate the parameters to use for the flag

response (1)

Tag_AFI: the optional AFI to select a tag family

MaskLength: length of the mask for transmitting(2)

Mask: the mask to transmit

Inventory_16_slots_Nb_UID_Retrieved: pointer to retrieve the number of tags

seen during the inventory 16 slots

Masklength represents the number of significant bits. The user should ensure that other bits are reset for

padding.

The inventory flag is reset.

Output parameter

MyTag: pointer on the structure

Return parameter

LRIxK_ERROR_CODE: The command failed. Either there is no tag or the tag

did not manage to perform the request.

LRIxK_ERROR_REQUEST_FLAGS_CODE: The inventory flag is not set.

LRIxK_COMMAND_SUCCESS_CODE: The tag answered the command.

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