Integrating nfc_callback() for ...EVENT_FIELD_ON / OFF in to wake_on_nfc example

[Pra_Engr]

Environment:

Nordic SDK 15.2.0

Eval kit nRF52840-DK / PCA10056

SES debugger on Windows 10

I was trying to integrate nfc_callback() for ...EVENT_FIELD_ON  / OFF from nfc_launchapp_record example in to wake_on_nfc example.

But ...EVENT_FIELD_ON  / OFF events are not recognized in the new wake_on_nfc -> nfc_callback().

Any quick hints / solutions Please !?

Thanks !

[Jørgen Holmefjord]

Hi,

Can you post your code/project showing how you integrated this? 

Best regards,
Jørgen

[Jørgen Holmefjord]

Did you not set any payload before calling nfc_t2t_emulation_start? I tried the code changes that you proposed, but I get an error (NRF_ERROR_INVALID_STATE) when calling nfc_t2t_emulation_start() without first calling nfc_t2t_payload_set(). If I include that part from the launch_app example, I'm able to detect the field.

[Pra_Engr]

Thanks !

It is working with adding nfc_t2t_payload_set().

But nfc_t2t_payload_set() is for NDEF message payload ! Here in this example .. I am not using any NDEF message, but only nfc field detection.

I don't understand why need to set aside m_ndef_msg_buf[]  !??

[Jørgen Holmefjord]

That is because you are using the NFC Type 2 Tag library. This is not necessary to detect the field. You can do that manually, using the code I posted in this answer.

[Pra_Engr]

Thanks !