AN3375 datasheet(27/73 Pages) STMICROELECTRONICS

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AN3375

ISO15693 library (intermediate layer)

Doc ID 018637 Rev 1

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3.4.2

ISO15693_Inventory function

This command sends an inventory command to the contactless tag.

3.4.3

ISO15693_InventoryOneSlot function

This command issues an inventory command to the CR95HF with the number of slot flag in

the request flags set to ‘1’.

Table 25.

ISO15693_Inventory function description

Function description

Prototype

result = int8_t ISO15693_Inventory( uc8

Flags , uc8 AFI, uc8 MaskLength, uc8

*MaskValue, uc8 AppendCRC, uc8 *CRC16,

uint8_t *pResponse );

Input parameter

Flags: request flags. The inventory flag of request flags

must be set to ‘1’.

AFI: AFI byte

MaskLength: number of bits in the mask

MaskValue: mask

AppendCRC: CRC16 management

CRC16: pointer to user CRC16

Output parameter

pResponse: pointer to CR95HF response

Return parameter

ERRORCODE_GENERIC: parameter value is erroneous or

CR95HF returns an error code

RESULTOK: CR95HF returns a succeeded code

ISO15693_ERRORCODE_PARAMETERLENGTH:

MaskLength value is erroneous

Table 26.

ISO15693_InventoryOneSlot function description

Function description

Prototype

result = int8_t ISO15693_InventoryOneSlot (uc8

Flags, uc8 AFI, uc8 MaskLength, uc8 *MaskValue,

uc8 AppendCRC, uc8 *CRC16, uint8_t *pResponse );

Input parameter

Flags: Request flags with inventory flag set, and number of slot flag set.

AFI: AFI byte

MaskLength: number of bits in the mask

MaskValue: mask

AppendCRC: CRC16 management

CRC16: pointer to user CRC16

Output parameter

pResponse: pointer to CR95HF response

Return parameter

ERRORCODE_GENERIC: a parameter value is erroneous or CR95HF

returns an error code

RESULTOK: CR95HF returns a succeeded code

ISO15693_ERRORCODE_PARAMETERLENGTH: MaskLength value is

erroneous

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