NFC does not work when BLE advertises.

[liushu1314]

Hi,

We have a new product based on the NRF52840. We are trying to add NFC record text to the firmware that based on SDK15. We could get the NFC record text from the NRF52840 on custom board only when we comment out the function below. BLE always works, but NFC_record_text can only be read when BLE stops advertising. 

ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);   // in advertising_start() function

We use the project ble_app_template to debug with and added the NFC record text on top of it. Below is the main function. 

Question:

1. Would the interference between BLE and NFC cause the issue ? Could it be a hardware issue ?

int main(void)
{
    bool erase_bonds = false ;

    // Initialize.
    log_init();
    timers_init();
    //buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();

    advertising_init();
    services_init();
    conn_params_init();
    peer_manager_init();

    // Start execution.
    NRF_LOG_INFO("Template example started.");
    application_timers_start();
   

    advertising_start(erase_bonds);

     nfc_init();

    // Enter main loop.
    for (;;)
    {
        idle_state_handle();
    }
}

Regards,

S

[JustinLee]

Hi, 

Could you please check the attached file for this issue?

nfc_sdk15.patch

There is a bug in SDK 15 from NFC hal.

I hope that you can resolve this issue with the attached patch.

Or, you can check this issue again with SDK 15.1 which has been applied the patch.

BR

Justin