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AN3955

ISO/IEC 14443-3 layers

Doc ID 022017 Rev 1

43/68

5.2.8

ISO/IEC 14443-3 Type B command function

These functions send an ISO/IEC 14443-3 Type B RF command to a contactless tag and

check the CR95HF response.

The ISO14443B_REQB function sends an REQB command to a contactless tag. Table 64

describes the ISO14443B_REQB function if an REQB command is sent.

Table 64.

ISO14443B_REQB function description

The ISO14443B_WUPB function sends a WUPB command to a contactless tag. Table 65

describes the ISO14443B_WUPB function if a WUPB command is sent.

Table 65.

ISO14443B_WUPB function description

The ISO14443B_SlotMarker function sends a SlotMarker command to a contactless tag.

Table 66 describes the ISO14443B_SlotMarker function.

Table 66.

ISO14443B_SlotMarker function description

Prototype

int8_t ISO14443B_REQB(uc8 AFIin,uc8 Param,

uint8_t *pResponse);

Input parameter

AFIin: An AFI byte (Application Family Identifier) represents the type of

targeted application.

Param: PARAM byte

Output parameter

pResponse: Pointer to the CR95HF response

Return parameter

RESULTOK: Function is successful. The REQB command is successfully

transmitted to a contactless tag.

CR95HF_ERROR_CODE: Function failed. The CR95HF returns an errror

code.

Prototype

int8_t ISO14443B_WUPB(uc8 AFIin,uc8 Param,

uint8_t *pResponse);

Input parameter

AFIin: AFIbyte (Application Family identifier) represents the type of

targeted application.

Param: PARAM byte

Output parameter

pResponse: Pointer to the CR95HF response

Return parameter

RESULTOK: Function is successful. The WUPB command is

successfully emitted to a contactless tag.

CR95HF_ERROR_CODE: Function failed. The CR95HF returns an errror

code.

Prototype

int8_t ISO14443B_SlotMarker(uc8 SlotNumber,

uint8_t *pResponse);

Input parameter

SlotNumber: Slot number value (4 bits) between 1 and 15

Output parameter

pResponse: Pointer to the CR95HF response

Return parameter

RESULTOK: Function is successful. The command is successfully

emitted to a contactless tag.

CR95HF_ERROR_CODE: Function failed. The CR95HF returns an errror

code.

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