AN3955 datasheet(44/68 Pages) STMICROELECTRONICS

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ISO/IEC 14443-3 layers

AN3955

44/68

Doc ID 022017 Rev 1

The ISO14443B_Attrib function sends an Attrib command to a contactless tag. Table 67

describes the ISO14443B_Attrib function.

Table 67.

ISO14443B_Attrib function description

The ISO14443B_HLTB function sends an HLTB command to a contactless tag. Table 68

describes the ISO14443B_HLTB function.

Table 68.

ISO14443B_HLTB function description

Prototype

int8_t ISO14443B_Attrib(uc8 *Identifier, uc8

*Parameters, uc8 NbByteHigherlayerData,

uc8*HigherLayerData, uint8_t *pResponse);

Input parameter

Identifier: Pointer to the identifier parameter (4 bytes). It is the value of

the PUPI sent by contactless tag in the ATQB.

Parameters input: Pointer on Parameters parameter (4 bytes)

NbByteHigherlayerData: Number of bytes of

HigherLayesDataparameter

HigherLayersData: Pointer on Parameters parameter

(NBByteHigherlayerDatabytes (optional))

Output parameter

pResponse: Pointer to the CR95HF response

Return parameter

RESULTOK: Function is successful. The command is successfully

emitted to contactless tag.

CR95HF_ERROR_CODE: Function failed. The CR95HF returns an errror

code.

Prototype

int8_t ISO14443B_HLTB(uc8 *Identifier, uc8

*Identifier, uint8_t *pResponse);

Input parameter

Identifier: Pointer on identifier parameter (4 bytes). It is the value of the

PUPI

sent by a contactless tag in the ATQB contactless tag.

Output parameter

pResponse: Pointer to the CR95HF response

Return parameter

RESULTOK: Function is successful. The HLTB command was

successfully transmitted to a contactless tag.

CR95HF_ERROR_CODE: Function failed. The CR95HF returns an errror

code.

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