NFC_CX_RF_DISCOVERY_CONFIG structure (nfccx.h)

The NFC_CX_RF_DISCOVERY_CONFIG structure contains RF discovery configuration settings. Discovery configuration should be completed during initialization after calling NfcDxDeviceInitialize, otherwise an error is returned.

Syntax

typedef struct _NFC_CX_RF_DISCOVERY_CONFIG {
  ULONG  Size;
  USHORT TotalDuration;
  ULONG  PollConfig;
  UCHAR  NfcIPMode;
  UCHAR  NfcIPTgtMode;
  UCHAR  NfcCEMode;
  UCHAR  BailoutConfig;
} NFC_CX_RF_DISCOVERY_CONFIG, *PNFC_CX_RF_DISCOVERY_CONFIG;

Members

Size

Size of this structure in bytes.

TotalDuration

Total duration of the single discovery period in milliseconds. Default is 300 milliseconds.

This member corresponds to TOTAL_DURATION specified in the NCI specification. Values can be between 0 to 0xFFFF. Use an appropriate value that factors into account both the discovery latency as well as power consumption.

PollConfig

Combination of NFC_CX_POLL_MODE_CONFIG values.

This member enables configuration of poll mode settings. The default enables polling for passive poll NFC-A, passive poll NFC-B, and passive poll NFC-F (212 and 424k). Its recommended that NFC clients configure additional active modes if they are supported.

NfcIPMode

Combination of NFC_CX_NFCIP_MODE_CONFIG values.

This member enables configuration of NFC-IP initiator mode settings. The value corresponds to combination of NFC_CX_NFCIP_MODE_CONFIG enum. The default enables polling for passive poll NFC-A and passive poll NFC-F (212 and 424k) phases.

NfcIPTgtMode

Combination of NFC_CX_NFCIP_TGT_MODE_CONFIG values.

This member enables configuration of NFC-IP target mode settings. The default enables passive listen NFC-A and passive listen NFC-F phases.

NfcCEMode

Combination of NFC_CX_CE_MODE_CONFIG values.

This member enables configuration of NFC-CE mode settings. The default enables passive listen NFC-A, passive listen NFC-B, and passive listen NFC-F phases.

BailoutConfig

Combination of NFC_CX_POLL_BAILOUT_CONFIG values. Default is disabled.

This member enables configuration of PA_BAIL_OUT and PB_BAIL_OUT as described in the NCI specification.

Requirements

See also

NFC class extension design guide

Near field communication (NFC) design guide