brp_Hitag_Request()

brp_errcode brp_Hitag_Request	(	brp_protocol	protocol,
		brp_Hitag_Request_TagType	TagType,
		brp_Hitag_Request_Mode	Mode,
		unsigned *	Snr
	)

Request and AC / according to Mode byte you can request Hitag-1 and Hitag-S tags.

Parameters

[in]	protocol	used to execute the command
[in]	TagType
[in]	Mode
[out]	Snr	Serial Number of selected label.