brp_VHL_GetATR()

brp_errcode brp_VHL_GetATR	(	brp_protocol	protocol,
		brp_buf *	ATR,
		size_t *	ATR_len,
		brp_mempool *	mempool
	)

This command returns the Answer to Reset (ATR) of the currently selected card as defined in the PC/SC specification, version 2.

If brp_VHL_Select() hasn't been executed successfully before, the BRP_VHL_ErrCardNotSelected status code will be returned. If the last selected card is no longer available in the antenna field, or a read/write operation failed previous to this command, the returned ATR is undefined.

Parameters

[in]	protocol	used to execute the command
[out]	ATR	ATR value in standardized format
[out]	ATR_len
[in]	mempool	is used to store response data. Maybe NULL to use an internal mempool, in this case the data is only available until another command uses the internal mempool