Low Level Communication Protocol and Hardware for Wired Sensor Networks

This paper describes communication protocol, which was originally designed and implemented for end point communication in smart homes. Due to protocol simplicity and architecture robustness, it is possible to use the whole system for other purposes rather than smart home control. For this purpose, the protocol uses the very common RS485 bus. Using metallic connection nowadays may look like a step back, but it is the fastest and cheapest way to integrate real hardware devices into the existing simulation projects. This paper describes the requirements for the whole hardware and software architecture, emphasizing on the descriptions of the protocol and the lowest hardware layers.