AN3375 datasheet(47/73 Pages) STMICROELECTRONICS

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AN3375

ISO15693 library (intermediate layer)

Doc ID 018637 Rev 1

47/73

3.9.2

ISO15693_SplitGetSystemInfoResponse function

This function returns the different information extracted from a response to a GetSystemInfo

command.

3.9.3

ISO15693_SplitMemorySizeInfo function

This function extracts the block size and number of blocks of MemSizeInfo field (response to

GetSystemInfoResponse command, see Table 73).

For more information, refer to Section 3.9.2: ISO15693_SplitGetSystemInfoResponse

function.

Table 72.

ISO15693_SplitGetSystemInfoResponse function description

Function description

Prototype

result = int8_t

ISO15693_SplitGetSystemInfoRespo

nse

(uc8 *pResponse,uc8

Length,uint8_t *Flags ,uint8_t

*InfoFlags,uint8_t

*UIDout,uint8_t

*DSFIDout,uint8_t

*AFIout,uint8_t

*MemSizeOut,uint8_t

*IcRefOut,uint8_t *ErrorCode);

Input parameter

pResponse: pointer to CR95HF response

Length: number of byte of pResponse

Output parameter

Flags: response flags

InfoFlags: informations flags

UIDout: UID index

DSFIDout: DSFID byte (optional)

AFIout: AFI byte (optional)

MemSizeOut: Memory size field (optional)

IcRefOut: IC reference out (optional)

ErrorCode: CR95HF Error code

Return parameter

ISO15693_ERRORCODE_CRCRESIDUE: the

contactless tag residue is erroneous

RESULTOK: the contactless tag response is valid

CR95HF_ERROR_CODE: the CR95HF returned

an error code

Table 73.

Description of memory size field (MemSizeOut parameter)

Bit nb

Flag name

Description

16 to 14

RFU

13 to 9

block size

Number of bytes of one contactless tag memory block

8 to 1

number of blocks

Number of blocks in the contactless tag memory

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