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Authorization NFC BLE pairing issues

HI all,

I'm trying to use the ble_nfc_pairing_reference example from SDK 15.0.0

I installed microECC and can now build the example using GCC on Windows.

A first pairing of Huawei Android Smartphone and the Rigado BMD-350 Eval Board is working as expected.

However, everytime I'm trying to re-connect the two devices, the smartphone shows me one of the following errors:

* Invalid PIN or

* Connection rejected

While debugging the code I was able to track these two issues down to authorization error codes 132 and 133 in ble_evt_handler (ble_m.c).

Do you have any ideas what could cause these errors?

Thanks in advance,

Lea