WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
1. Introduction
1.1. Operational description
The Proteus-II exists in two variants, one variant with integrated PCB-antenna, and the other
variant with 50
Ω
connection to an external antenna. For the general functionality there is no
difference between the variants.
The Proteus-II module is a radio sub module/device for wireless communication between de-
vices such as control systems, remote controls, sensors etc. . On the basis of
Bluetooth
®
LE 5 it offers a fast and secure data transmission of data packages between two or
more parties (point to point topology). A serial interface (UART) is available for communication
with the host system.
The Proteus-II uses the Bluetooth
®
LE standard to provide general data transmission between
several devices. The standard itself offers a wide range of configurations and possibilities to suit
and optimize sophisticated customer applications. To fulfill the needs and specifications of such
applications a tailored firmware can be developed on the basis of the Proteus-II hardware. This
includes the connection and communication to custom sensors, custom Bluetooth
®
LE profiles,
timing configurations, security configuration as well as power consumption optimizations.
1.1.1. Key features
The Proteus-II offers the following key features that are described in the manual in more detail:
SPP-like connection-based secured data transmission:
The Proteus-II firmware implements
an SPP-like Bluetooth
®
LE profile that allows the bidirectional data transmission between
several Proteus-II and/or to other Bluetooth
®
LE devices implementing the AMBER SPP
profile. Any module in the network can initiate connection setup. Secured connections
allow the transmission of encrypted data (user-defined key or pairing).
Fast sensor data transmission via Beacons:
The Proteus-II supports the transmission and
reception of Beacons. Beacons are fast broadcast messages that allow the energy-
efficient unidirectional transmission of data. Especially in sensor networks, this feature
is suitable for the frequent transmission of measurement data as it removes the need for
connection-based communication and therefore is more energy efficient.
Advanced customization capabilities:
The configurable Device Information Service (DIS),
the UUID and the appearance of the Bluetooth
®
LE profile, enable to personalize the
Proteus-II to fuse with the user’s end product.
Low power position sensing solutions:
The current TX power of any Proteus-II is always
transmitted with each advertising packet when the module is in command mode. With
this, distance estimation and position sensing solutions can be realized conveniently by
performing a passive scan.
Fast serial interface:
The Proteus-II offers a UART-interface to communicate with a host using
a user-defined baud rate and a simple command interface.
Latest microprocessor generation provided by Nordic Semiconductor nRF52 series:
The
heart of the Proteus-II is a Bluetooth
®
LE chip of the nRF52 series offering high perfor-
mance values combined with low power consumption. It is a 32 Bit ARM Cortex-M4F
CPU with 512 kB flash + 64 kB RAM and up to 4dBm output power.
Order code 2608011x24010
14
Version 1.11 , July 2022