nfc_t4t_event_t

enum nfc_t4t_event_t

#include <nfc/include/nfc_t4t_lib.h>

Enumerator
NFC_T4T_EVENT_NONE	This ID is never used. Dummy value for completeness.
NFC_T4T_EVENT_FIELD_ON	External Reader polling detected.
NFC_T4T_EVENT_FIELD_OFF	External Reader polling ended.
NFC_T4T_EVENT_NDEF_READ	External Reader has read static NDEF-Data from Emulation. A Read operation happened on last byte of NDEF-Data.
NFC_T4T_EVENT_NDEF_UPDATED	External Reader has written to length information of NDEF-Data from Emulation. The usual behavior of a Reader-Writer that accesses NDEF information for update is to set the length to zero at the beginning of the update process. It then writes the content of NDEF-Data. When all content is written it will update the length information inside the NDEF file. This event will be generated every time an update to the length is happening. This length information is residing in the first 2 bytes of the NDEF-Content container and is called 'NLEN'. Since this callback is triggered on any access to these bytes the returned data_length information might not be consistent (e.g. in case of only a single byte write to the length). Parameters data Pointer to current data of NDEF message data_length Current value of NDEF content length information i.e. 'NLEN' field.
NFC_T4T_EVENT_DATA_TRANSMITTED	In Raw mode it signals that the data from nfc_t4t_response_pdu_send have been sent out.
NFC_T4T_EVENT_DATA_IND	In Raw mode delivers the APDU fragments All NFC_T4T_EVENT_DATA_IND events that have the NFC_T4T_DI_FLAG_MORE flag set belong to the same APDU. The first NFC_T4T_EVENT_DATA_IND without NFC_T4T_DI_FLAG_MORE flag signals the completeness of the APDU. The Application then has to reply with a call to nfc_t4t_response_pdu_send. The library will handle internally the fragmentation of the response towards the Reader-Writer. The data of the response PDU must be kept valid until the next callback from the library happens (e.g. next NFC_T4T_EVENT_DATA_IND or NFC_T4T_EVENT_FIELD_OFF). Parameters data Pointer to the fragment of APDU. data_length Length of data. flags nfc_t4t_data_ind_flags.