AN3955 datasheet(59/68 Pages) STMICROELECTRONICS

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AN3955

SRIX4K library

Doc ID 022017 Rev 1

59/68

6.1.7

SRIX4K Advanced function

The SRIX4K_GetUIDadvanced function returns UID field of a contactless tag. Table 98

describes the SRIX4K_GetUIDadvanced function.

The SRIX4k_GetChipIDAndSelectIt function returns a ChipId of a contactless tag and

sends a SelectChipId command.

Table 99 describes the SRIX4k_GetChipIDAndSelectIt function.

Table 99.

SRIX4K_GetChipIDAndSelectIt function description

The SRIX4K_Anticollision function runs an anti-collision sequence. Table 100

describes the SRIX4K_Anticollision function.

Table 98.

SRIX4K_GetUIDadvanced function description

Prototype

int8_t SRIX4K_GetUIDadvanced(uint8_t*UID

field);

Input parameter

None

Output parameter

UIDfield: Pointer to the UID field of a contactless tag

Return parameter

RESULTOK: Function is successful. Contactless tag

response validated.

ERRORCODE_GENERIC: Function failed. CR95HF returns

an error code.

Prototype

int8_t SRIX4K_GetChipIDAndSelectIt(uint8

_t*ChipID);

Input parameter

None

Output parameter

ChipID: Chip ID of a contactless tag

Return parameter

RESULTOK: Function is successful. Contactless tag

response validated.

ERRORCODE_GENERIC: Function failed. CR95HF returns

an error code.

Table 100.

SRIX4K_Anticollision function description

Prototype

int8_t SRIX4K_Anticollision(uint8_t*NbT

agInventoried, uint8_t*ChipIdArray);

Input parameter

None

Output parameter

NbTagInventoried: Number of tags inventoried in RF field

*ChipIdArray: Pointer to the ChipId of the tag inventoried

(the length of a ChipId is one byte).

Return parameter

RESULTOK: Function is successful.

ERRORCODE_GENERIC: Function failed. A parameter

value is incorrect or CR95HF returns an error code.

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