The AT+i Protocol: An extension of the Hayes AT command set for embedded Internet connectivity

Copyright 2000 / All rights Reserved. Many embedded systems could benefit from using the Internet for communication and for data collection. Unfortunately, many of these systems were not originally designed with this in mind. They lack the processing power and the memory needed to support an Internet protocol stack, and they may lack a modem or an Ethernet interface. In addition, many embedded system developers don’t currently have the expertise to design the hardware and software needed to provide Internet connectivity. But what if a simple, costeffective solution could be found for adding Internet connectivity to existing embedded systems? In this article Alan describes an extension to the Hayes AT protocols that facilitates embedded connectivity.