AN3955 datasheet(56/68 Pages) STMICROELECTRONICS

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SRIX4K library

AN3955

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Doc ID 022017 Rev 1

The SRIX4K_SplitCompletionResponse function splits the Completion contactless tag

response. Table 92 describes the SRIX4K_SplitCompletionResponse function.

The SRIX4K_SplitReadBockResponse function splits the ReadSingleBlock contactless

tag response. Table 94 describes the SRIX4K_SplitReadBockResponse function.

Table 92.

SRIX4K_SplitCompletionResponse function description

Prototype

int8_t SRIX4K_SplitCompletionResponse(u

c8*ReaderResponse, uc8 Length,

uint8_t*ChipID);

Input parameter

ReaderResponse: Pointer to the CR95HF response

Length: Number of byte of Reader response

Output parameter

ChipID: Chip ID of a contactless tag

Return parameter

RESULTOK: Function is successful. Contactless tag

response is validated.

CR95HF_ERROR_CODE: Function failed. The CR95HF

returns an error code.

SRIX4K_ERRORCODE_CRCRESIDUE: CRC16 residue is

incorrect.

Table 93.

SRIX4K_SplitReadSingleBlockResponse function description

Prototype

int8_t SRIX4K_SplitReadBlockResponse(uc

8*ReaderResponse, uc8 Length,

uint8_t*DataReadIndex);

Input parameter

ReaderResponse: Pointer on CR95HF response

Length: Number of byte of Reader response

Output parameter

DataReadIndex: Index on ReaderResponse of data read

into a contactless tag.

Return parameter

RESULTOK: Function is successful. Contactless tag

response is validated.

CR95HF_ERROR_CODE: Function failed. The CR95HF

returns an error code.

SRIX4K_ERRORCODE_CRCRESIDUE: CRC16 residue is

incorrect.

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