Visual Microcontroller Programming Using Extended S-System Petri Nets

摘要

In this paper, we present the development work on a visual microcontroller programming tool based on an extended form of S-System Petri Nets (SSPN). By using the extended form of SSPNs we were able to describe in visual form subroutines, interrupts, I/O operations, arithmetic operations, and other programming constructs in a microcontroller application program. Construction of the visual programming tool included the development of a drawing editor which utilized directed graphs as internal model for created SSPN diagrams, and a parser to check for correct diagram and sentence syntax. The parser developed uses context-free diagram and string grammars for the diagram and sentence syntax checking, and upon successful parsing the tool automatically translates the SSPN-represented application program into assembly code for a target microcontroller.