secure pairing

[SametK]

I want to make a secure pairing with Bluetooth. Let it first pair with the device, then connect directly without pairing. Maximum how many devices can I register?

[Vidar Berg]

Hello,

I recommend you have a look our DevAcademy course at https://academy.nordicsemi.com/courses/bluetooth-low-energy-fundamentals/lessons/lesson-5-bluetooth-le-security-fundamentals/ for an introduction to how BLE security is implemented in the SDK. The max. number of bonds is configurable through the CONFIG_BT_MAX_PAIRED symbol.

Best regards,

Vidar

[SametK]

Thanks for your answer, I did this project 2 years ago and therefore I use Segger Embedded Studio. What is the equivalent of the CONFIG_BT_MAX_PAIRED parameter in Segger?

[Vidar Berg]

Are you using the nRF5 SDK or the nRF Connect SDK ( nRF Connect SDK and nRF5 SDK statement )? 

[SametK]

nRF5 SDK

[Vidar Berg]

OK, thanks for confirming. In that case, the max. number of pairing is only limited by the amount of flash you have available in the FDS (filesystem).