brp_VHL_Setup()

brp_errcode brp_VHL_Setup	(	brp_protocol	protocol,
		brp_CardType	ConsideredCardType,
		brp_buf	MifareKey,
		bool	AsKeyA,
		unsigned	MadId,
		unsigned	AppId,
		brp_DesfireFileDescription	DesfireFileDesc,
		brp_buf	Key,
		size_t	Key_len,
		brp_buf	SegmentInfo,
		size_t	SegmentInfo_len,
		bool	EnStamp,
		brp_VHL_Setup_AdrMode	AdrMode,
		unsigned	FirstBlock,
		unsigned	BlockCount,
		brp_VHL_Setup_OptionFlag	OptionFlag,
		unsigned	BlockSize,
		unsigned	FileLen,
		brp_VHL_Setup_SelectFileCmdList_Entry *	SelectFileCmdList,
		size_t	SelectFileCmdList_len
	)

This command creates a VHL file dynamically and transfers it to the reader's RAM. The VHL file specifies the card-specific memory structure required to call VHL.Read or VHL.Write. You need to run VHL.Setup if you don't want to configure the readers with a static VHL file ( learn more).

To runVHL.Format , you cannot use a dynamic VHL file. In this case, you have to follow thestandard VHL implementation with a static VHL file.

What to specify

To describe the memory structure, provide a list of parameters depending on the card type (see optional fields in the Parameters table below). If you omit a parameter, the reader will use the default value. To fill in the parameter values, please refer to the card specification. For LEGIC or MIFARE cards, you can also analyze the card structure using BALTECH ID-engine Explorer.

Mixing dynamic and static VHL files

In principle, it is possible to mix dynamic VHL files and static VHL files (as part of the reader configuration for the standard VHL implementation). However, please note that the dynamic VHL file is lost as soon as you run VHL.Read or VHL.Write with a static VHL file. Thus, if you later want to run VHL.Read or VHL.Write with the dynamic VHL file again, you first need to rerun VHL.Setup to recreate the dynamic VHL file.

Parameters

[in]	protocol	used to execute the command
[in]	ConsideredCardType	Type of card to consider. The default value is 0x00, i.e. the reader will use the card type detected by VHL.Select. To handle the card as a different type (e.g. handle a DESFire card as an inter-industry ISO 14443-4 card), set this value to the desired card type. Not all card types support all VHL commands. For details, see our overview ofsupported commands
[in]	MifareKey	Encryption key to access the card.
[in]	AsKeyA	If true , Key A is used to access the card. If false , Key B is used.
[in]	MadId	2-byte application ID (AID) that identifies the sectors to access. If specified, only the payload of that application will be accessed. If not specified, the payload of all sectors will be accessed. All sector trailer blocks and block 0 will be omitted, i.e. the following block order is used: 1,2,4,5,6,8, etc. (0,3,7, etc. are omitted).
[in]	AppId	Application ID, ranging from 0 to 0x00FFFFFF (big-endian)
[in]	DesfireFileDesc
[in]	Key	Key with preceding crypto byte. Please refer to Device / CryptoKey SubKey for more details.
[in]	Key_len
[in]	SegmentInfo	Either segment number or stamp, as defined in the EnStamp parameter. By default, the first segment will be accessed using its segment number.
[in]	SegmentInfo_len
[in]	EnStamp	If true , SegmentInfo contains a stamp, i.e. the identifier of the application. If false , it contains a segment number. This parameter will only be evaluated if SegmentInfo has a length of 1. In this case, the reader can't distinguish between ID and stamp as a valid segment number always has length 1.
[in]	AdrMode	Specifies the addressing mode. This parameter is only available on readers supporting LEGIC advant. LEGIC prime readers ignore it. To allow for backward compatibility with LEGIC prime readers, omitting this parameter will not result in the default value, but in the following behavior: VHL address 0 is mapped to protocol header address 25 , starting with the first data byte after the longest possible LEGIC prime stamp.
[in]	FirstBlock	First block of the application data
[in]	BlockCount	Number of blocks occupied by the application data
[in]	OptionFlag	Option flag value for read/write operations
[in]	BlockSize	Block size in bytes
[in]	FileLen	File length
[in]	SelectFileCmdList
[in]	SelectFileCmdList_len