MKW30Z BLE connection flood protection

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MKW30Z BLE connection flood protection

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lucianfiran
Contributor V

KW40Z_Connectivity_Software_1.0.1 (KSDK_1.3.0); IAR 7.50

If form an custom application (like nRF, or other) after the advertising starts

some one tries to connect / disconnect very fast ( 7-10.. times) the advertising gets blocked. 

You cannot connect via BLE ( only after the PCB gets a reset).

The response error after this connection flooding is 0x85.

The board is functional like TSI, TPM works when the message flooding occurs.

I tried do delay the BleApp_Start with a 3 seconds one shoot timer after disconnected event, but the issue remains.

How can this issue be addressed ?

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gerardo_rodriguez
NXP Employee
NXP Employee

Hi Lucian,

I tried replicating your issue with the Cycling speed cadence sensor demo for the FRDM-KW40Z by connecting and disconnecting several times from a smartphone and the application works fine, could you give more details about the problem you are having?

What demo are you using as a base for your application?

Which function is returning the response error 0x85?

Regards,
Gerardo

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lucianfiran
Contributor V

Hello Gerardo,

Tested with modified OTAP  application and nRF Connect.

When device starts to advertise. I push Connect / disconnect multiple times.

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