Help on OTA between two MCXW71 boards

[amaurux]

Hi everyone,

I'm trying to run OTA between two FRDM-MCXW71 boards using the default SDK examples.

• Board 1: flashed with otap_client_att

• Board 2: flashed with ota_server_bm (connected to PC via USB for FSCI)

• OTA Tool: NXP Over-the-Air Programming Test Tool

The problem:
When I connect the OTA Tool to the server board and start an OTA transfer, I only receive this FSCI frame:

74 7B 07 07 03 60 03 00 F7 00 FF

After this frame, nothing else happens. The OTA Tool does not send any further commands and the file transfer never starts.

My questions:

1. What does this exact FSCI sequence mean? Is it an error or a normal status/acknowledgement?

2. Do the sample projects require any additional action or configuration to properly start scanning (server) and advertising (client) (I tried pressing the SW4 button, but nothing happened) ?

Any help or guidance would be greatly appreciated.
Thanks!

[sofiaurueta]

Hello,

Hope you are doing well.

Could you please confirm if you are able to follow the steps as mentioned in Bluetooth LE stack and demo applications — MCUXpresso SDK Documentation?

To start advertising, press the ADVSW (SW2) button on the OTAP Client. To start scanning, press the SCANSW (SW2) button on the OTAP Server.

Best regards,
Ana Sofia.

[amaurux]

Hello Ana Sofia,

I can confirm that I finally managed to make it work. The issue was that the radio core was locked, and once it was unlocked, everything worked as expected.

I also have an additional question:
Is it possible to pre-flash the MCU in order to unlock OTA, either when receiving a brand-new MCU or directly at the PCB manufacturer level?

Thank you in advance for your support.

Best regards,
Amaury Sellito