O'Reilly Open Source Convention - August 1-5, 2005

Session
Building Networked Embedded Sensors Using J2ME
William Wright, Division Engineer, BBN

Track: Java
Date: Thursday, August 4th, 2005
Time: 2:35pm - 3:20pm
Location: Portland 252
While J2ME is often thought of as a technology for mobile phones, it is also in use in many other environments where resource-constrained computers are used. For the past two years, we have been using Java in embedded systems to build network-enabled sensors that can monitor and respond to various physical environments.
This session details how to build networked embedded sensors using J2ME. We conclude with a code walkthrough and demonstration of a small sensor network used for perimeter security control. Attendees will leave this session with the ability to use and extend the features of J2ME for device monitoring and control. They will also be able to use the J2ME networking features to connect sensor-enabled devices into a web of cooperating sensors.
Outline:
- Introduction
a) Relevant features of J2ME
b) Target hardware platform constraints
c) How this talk relates to the RTSJ
- Interfacing J2ME to sensor devices
a) Typical electrical considerations
b) Vendor platform-specific classes
c) Event (interrupt) handling
d) Code walkthrough
- Networking J2ME sensors
a) Connection classes
b) Real-time data in a non-real-time network
c) Code walkthrough
- Demonstration
- Summary and Discussion