NFC Examples allways throw error 133

[PeterLeicht]

We use the Development Kit PCA 10056 from Nordic (Ver 1.0.0).

When we test different SDK 15.0 - Examples with different configurations we allways expierience following error, which is shown in Log (Default-Level "Debug"): BLE_M: Authorization failed with code: 133!

This log-information occures after the connection-question popup was submitted by the user with "yes".

What can I do to solve this problem. We use Samsung-Handys for testing (Galaxy S8 and Galaxy S6).

[Jared]

Hi

Could you be more specific with which example you are using?

Jared 

[PeterLeicht]

Sorry, my reply was wrong. It referred to a similar post. We tested following examples: 

- examples\ble_peripheral\experimental\ble_app_hrs_nfc_pairing
- examples\ble_peripheral\experimental\ble_nfc_pairing_reference

[Jared]

Hi Peter

Have you installed the external micro-ecc library that is required to calculate Elliptic Curve Cryptography keys? 

micro-ecc: http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.0.0%2Flib_crypto_backend_micro_ecc.html&anchor=lib_crypto_backend_micro_ecc_install

Jared

[PeterLeicht]

Yes, I have.

[Jared]

Hi Peter

I tried the examples from the SDK and didn't experience any issues. 

Could you try to flash the example again from the SDK after erasing the chip with nrfjprog command: nrfjprog --family nrf52 --eraseall

Old pairing keys might be saved on the chip which could cause the error.

Jared