NINA-B31 series - Getting Started
UBX-18022394 - R02
Introduction
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1
Introduction
The NINA-B31 series are small stand-alone Bluetooth 5 low energy modules featuring full Bluetooth 5
support, a powerful Arm
®
Cortex
®
-M4 with FPU, and state-of-the-art power performance. The
embedded low power crystal improves power consumption by enabling optimal power save modes.
The NINA-B3 series has two sub-series, NINA-B30 series and NINA-B31 series. This document
describes how to set up and use the NINA-B31 series modules with u-blox connectivity software.
1.1
Key features
One of the key features of NINA-B31 is the Wireless serial cable replacement functionality. The basic
functionality is to transfer data between the serial port and a wireless link. It is possible to configure
the NINA-B31 module to automatically setup a connection and/or accept an incoming connection
using AT commands.
For a host, this means that an existing serial cable can be replaced by a wireless solution; in many
cases without the need to modify the host.
Figure 1: NINA-B31 series Bluetooth setup
1.2
Modes of operation
The NINA-B31 series module can operate in the following three different modes:
•
Command mode
•
Data mode
•
Extended Data mode
In command mode, the module is configured using AT commands. For information regarding the
available AT commands, see u-blox Short Range Modules AT Commands Manual [1].
In data mode, the module transmits data transparently between the serial UART and wireless
connection(s).
The extended data mode (EDM) allows individual control of each active link. While sending and/or
receiving data, AT commands can simultaneously be sent to the module from the host. For more
information about EDM, see section 2.6 and u-blox Extended Data Mode Protocol Specification [7]).
