EWB100 Usage and Deployment Guide
Rev 1.13
Page 16
3 Internal Elements of the EWB100
This section introduces some of the more important internal aspects of the
EWB100 as well as some features beyond just the voice modes mentioned in the
previous section.
3.1
Two software subsystems
There are two software systems that run on the EWB100 device. The first is the
“
mini-kernel
”
or “boot loader” which runs right after power on or reset. This
system does not have a lot of functionality but exists mostly to handle the
reloading of the main system when needed. This software has a limited set of
commands available but for the most part cannot examine or alter the system
configuration (although it can erase it entirely!)
. The minikernel’s commands are
documented in a separate section of this document
The second software system is the actual runtime code that has lots of
functionality and an extensive set of commands. Most of the commands in this
document apply only to the runtime software.
3.2
Configuration Data Base
There are many configuration parameters for the EWB100 device. Almost all
aspects of the behavior of the device may be altered by configuration
parameters. All configuration parameters have a default value that is part of the
runtime image and cannot be changed by the user except for some limited
values via the “User Defined Defaults” mechanism.
3.3
802.11 Radio
The ewb100 contains an 802.11 radio that operates in the 2.4GHz band. It
supports both 802.11b and 802.11g. The radio has been highly optimized to
reduce power consumption both when operating and when in standby mode.
3.4
IP Stack
The ewb100 contains an IPv4 protocol stack. It supports DHCP for obtaining IP
addresses. It also includes a simple Telnet server that can be used for diagnostic
and maintenance purposes.
3.5
Command Line Interpreter
There is a command line interpreter in the ewb100 that provides a means to
configure, update, monitor, and diagnose it. It provides complete access to the
configuration data base and so is used whenever the device needs to be
configured.
There are two versions of the CLI, one for the miniKernel and one for the runtime
code.
Summary of Contents for TEAM Badge (EWB100)
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