BlueMod+B20/BT2.1
User Guide
Release r03 www.stollmann.de Page 4 of 38
1 Introduction
This document describes the usage of the BlueMod+B20/BT2.1 Bluetooth module
featuring software version V3.100 or later.
For a detailed description of the commands refer to the BlueMod+B20/BT2.1 AT
Command Reference.
HID Profile
HID profile is available in BlueMod+B20 firmware version V3.002 and later. This
firmware implements the role device, device type combo device.
A combo device can be connected to the serial interface of the BlueMod+B20.
All Bluetooth HID specific information are described in chapter HID Profile.
SSP – Secure Simple Pairing
The headline feature of Bluetooth 2.1 is the “Secure Simple Pairing” (SSP). The
SSP is an improved experience of the pairing procedure.
For security reasons it is necessary to be able to recognize other Bluetooth devices
and control the access to the local Bluetooth device.
This pairing process can be triggered from the user to create a bond (AT+BBND)
or automatically when connecting to a service of another Bluetooth device (ATD…).
All security specific information are described in chapter Secure Simple Pairing.
Power Down Modes
The BlueMod+B20 supports different power down modes to increase the electric
power consumption.
All power down modes are described in chapter Power Down Modes.
Remote Configuration
The BlueMod+B20 includes the functionality to configure the module from the
Bluetooth interface.
More details about the required configuration and a connection example is
described in the chapter Remote Configuration.
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