Data Sheet

NINA-B41-data sheet
Figure 1: NINA-B41 software structure
1.5.1u-connectXpress software
NINA-B41x-0xB modules are pre-flashed with u-connectXpress software, and are delivered with
u‑blox secure boot loader.
The u-connectXpress software enables use of the Bluetooth low energy functions, controlled by
AT commands over the UART interface. Examples of supported features are u-blox low energy
Serial Port Service, GATT server and client, central and peripheral roles, and multi-drop connections.
NINA-B41 modules can be configured using the u‑blox s‑center evaluation software, which can be
downloaded from the u-blox website and is available free of charge.
More information on the features and capabilities of the u-connectXpress software and how to use
it can be found in the u-connect AT commands manual [2] and the u-connectXpress software user
guide [4].
1.6Bluetooth device address
Each NINA-B41 module is pre-programmed with a unique 48-bit Bluetooth device address. If the
memory of a NINA‑B41 module is corrupted or otherwise lost, the address can be recovered from
the data matrix bar code printed on the module label.
UBX-20035327 - R01

1 Functional description Page 6 of 34
C1-Public