NFC Commissioning timeout

[Mary]

I am using nRF5 SDK for Thread and Zigbee 2.0.0

I am having trouble commissioning using NFC, either with the nfc_meshcop example or my own code (based on the nfc_meshcop example).

After bringing the NFC antenna near the antenna on the Raspberry Pi based Border Router, I see the following messages after about a minute and a half:

[0000137496] -MESH-CP-: handshake timeout

[0000137496] -MESH-CP-: mbedtls_ssl_fetch_input() returned -26624 (-0x6800)

[0000137496] -MESH-CP-: mbedtls_ssl_read_record_layer() returned -26624 (-0x6800)

[0000137496] -MESH-CP-: mbedtls_ssl_read_record() returned -26624 (-0x6800)

<info> app: State changed! Flags: 0x00008000 Current role: 0

<info> app: State changed! Flags: 0x0000800B Current role: 0

<info> app: State changed! Flags: 0x00008000 Current role: 0

<info> app: State changed! Flags: 0x0000800B Current role: 0

<info> app: State changed! Flags: 0x00008000 Current role: 0

<info> app: State changed! Flags: 0x0000800B Current role: 0

Also, the function joiner_calback(otError error, void * p_context) is called with the 'error' parameter set to OT_ERROR_SECURITY.

The Raspberry Pi is running from the RaspPi_OT_Border_Router_Demov2.0.0-1.alpha.img

What do these messages mean? and how do I fix it?

Mary

[Jørgen Holmefjord]

Hi,

Have you tested to run unmodified applications from freshly extracted SDK version, to make sure that nothing have been modified?

Best regards,
Jørgen

[Jørgen Holmefjord]

Ok, so you are only seeing the issue when using the NCP with USB transport?

[Mary]

That is correct.

[Jørgen Holmefjord]

Thank you for the clarification. I will check with the developers if they have tested this and can find any issues with this setup.

[Jørgen Holmefjord]

Our tests only cover NFC commissioning example when using NCP UART, however there is nothing that should prevent it from working with USB NCP as well.

There is a bug in the current SDK that resulted in the USB library being built without cryptocell support. This should only slow down commissioning, but if the timeout is low, it could make it fail.

Can you test with the library in this post, that have Cryptocell support enabled in the USB library?