1.1.1. Key features
The Proteus-e offers the following key features:
SPP-like connection-based secured data transmission:
The Proteus-e firmware imple-
ments an SPP-like Bluetooth
®
LE profile that allows the bidirectional data transmission
between two Proteus-e and/or to other Bluetooth
®
LE devices implementing the SPP-
like profile. Secured connections allow the transmission of encrypted and authenticat-
ed data.
Remote GPIOs:
The Proteus-e firmware allows to switch free module GPIOs via remote
control. More information can be found in chapter
Advanced customization capabilities:
The configurable UUID and the appearance of the
Bluetooth
®
LE profile, enable to personalize the Proteus-e to fuse with the user’s end
product. For more information see chapter
Custom advertising data:
Furthermore, the complete content of the advertising and scan
response packet can be customer defined. With this, any beacon function can be
realized. For more information see chapter
Low power position sensing solutions:
The TX power of any Proteus-e is always trans-
mitted during advertising. With this, distance estimation and position sensing solutions
can be realized conveniently.
Fast serial interface:
The Proteus-e offers a UART-interface to communicate with a host
using a user-defined baud rate and a simple command interface. Furthermore, the
firmware provides the so called "transparent mode" (see chapter
), which is formerly
known as "peripheral only mode" in Proteus-I,-II and -III. This mode offers a transparent
UART interface such that an easy adaption of already existing custom hardware with
the Bluetooth
®
LE interface is enabled.
Latest microprocessor generation provided by Nordic Semiconductor nRF52 series:
The heart of the Proteus-e is a Bluetooth
®
LE chip of the nRF52 series offering high
performance values combined with low power consumption. It is a 64 MHz ARM
Cortex-M4 CPU with 192kB flash + 24kB RAM and up to 4 dBm output power.
Bluetooth
®
5 stack:
The Bluetooth
®
5 stack enables fast and energy efficient data trans-
mission using state-of-the-art technology of Nordic Semiconductors.
Flexible wired interfacing:
The Proteus-e is equipped with extra pins suited for custom
device/sensor connection. With help of these, a tailored firmware can be developed
which is optimized to the customer’s needs. The pins can be configured to various
functions such as UART, SPI, I2C, ADC and GPIO.
Additional Bluetooth
®
5 radio modes:
The Proteus-e provides the advanced radio modes
2 MBit mode for faster data transmission. For more information, see chapter
1.1.2. Connectivity
The Bluetooth
®
LE standard allows to setup a network with various Bluetooth
®
LE devices
from different manufacturers. To be able to communicate with Proteus-e devices, the SPP-
like profile must be known and implemented by all network participants.
The advanced developer guide of Proteus-e (application note ANR024 [2]) contains the de-
sign data of the SPP-like profile, to implement it for example in smart phone apps.
Proteus-e reference manual version 0.3
© November 2021
www.we-online.com/wireless-connectivity
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