Functional Description; Operation Modes; Radio Module States - We PROTEUS-III User Manual

WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-III

5. Functional description

5.1. Operation modes

The Proteus-III module acts as a slave and can be fully controlled by an external host. The
Proteus-III supports the following operating modes:
• The command mode, where the Proteus-III can be controlled by the host controller via
commands. The command mode allows to use all central and peripheral function of the
radio module. The functions of the radio module, like data transmission or configura-
tion tasks, can be triggered by predefined commands (see chapter 7 ) that are sent as
telegrams over the UART interface.
• The peripheral only mode (see chapter 10 ) provides a transparent UART interface and
supports only the peripheral functions of the radio module. Data transmission can be
done by the host without using any commands.

5.2. Radio module states

The Proteus-III can operate in different states. Depending on the active state several com-
mands of the command interface (see chapter 7 ) are permitted to modify the state, configure
the module or transmit data over the radio interface. An overview of the different states and the
corresponding allowed commands can be found in Figure 8 .
When the Proteus-III is powered up, it starts in ACTION_IDLE state. In this state the module
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advertises (Bluetooth
connect to it.
The ACTION_IDLE state also allows to switch to ACTION_SCANNING state, where the module stops
advertising and scans for other advertising Bluetooth
When leaving the ACTION_SCANNING state with the corresponding command, the module is in
ACTION_IDLE state and starts advertising again.
The ACTION_CONNECTED state can be entered, either by getting a connection request from an-
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other Bluetooth LE device, or by setting up a connection itself. In this case, it stops advertising
and data can be transmitted and received to/from the connected Bluetooth
state remains active as long as the module does not disconnect itself, and no disconnection
request from the connected remote device is received.
When disconnecting, the module goes to ACTION_IDLE state and starts advertising again, to be
ready for the next connection setup.
Order code 2611011024000
Version 1.8 , July 2022
LE role "peripheral"), such that other devices in range can detect it and
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LE devices in range.
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LE device. This
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