ASWN/24/Sensor node hardware, Berkeley Motes, Sensor Network Programming Challenges

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Introduction
A real world sensor network application most likely has to incorporate all these elements subject to energy, bandwidth, computation, storage and real-time constraints.
There are two types of programming for sensor networks, those carried out by end user and those performed by application developers.
Sensor Node Hardware
Berkeley Motes
Characteristics of the MicaZ, Mica2, and Mica2dot processor boards
Sensor Network Programming Challenges
Traditional programming technologies rely on operating systems to provide abstraction for processing, I/O, networking, and user interaction hardware
When applying such a model to programming networked embedded systems, such as sensor
networks, the application programmers need to explicitly deal with message passing, event synchronization, interrupt handing, and sensor reading.
Node-Level Software Platforms
Most design methodologies for sensor network software are node-centric, where programmers think in terms of how a node should behave in the environment.
A node level platform can be node-centric operating system, which provides hardware and networking abstractions of a sensor node to programmers, or it can be a language platform, which provides a library of components to programmers.