New multi-token based protocol for flexible Networked microcontrollers

This research ^a paper deals with reconfigurable networked microcontrollers following the STM32F4 technology. These controllers based on the token ring architecture, are planned to be reconfigurable according to user requirements, and should be automatically adapted at run-time to their environment. A reconfiguration scenario is assumed to be any run-time automatic addition/removal/update of OS periodic tasks to/from different STM32F4 microcontrollers. Nevertheless, if simultaneous and concurrent scenarios appear in different controllers, then we can get unpredictable critical behaviors of the whole distributed system. A multi-agent architecture is defined where Request and Coordination Agents are assigned to each microcontroller to handle local reconfiguration scenarios after coordination with remote controllers. A tool is developed to simulate a real-case study. We discuss the paper´s contribution by analyzing the experimental results that we did on Networked STM32F4 microcontrollers.