Hardware software system design of a generic embedded controller for industrial applications

The paper deals with system design of an industrial controller with an embedded microcontroller. The controller´s application could be customized for any specific needs. The paper dwells on the system´s architecture, system hardware design and the customized software design relevant to the controller´s functionality. The paper illustrates the customization of the generic controller for a specific task. The system monitors ambient temperature and then registers it on the LCD display. The system annunciates the ambient temperature in a synthesized voice. The paper demonstrates how the customized functionality is achieved in software and then ported into the controller. The systems software is designed through a program written in C language with embedded assembly language as and when needed. This software development methodology provides a structured programming environment which leads to modularity and lends portability to the code