Year: 2022
Type: preprint
Abstract: FreeRTOS is a real-time operating system with configurable scheduling policies. Its portability and configurability make FreeRTOS one of the most popular real-time operating systems for embedded devices. We formally analyze the FreeRTOS scheduler on ARM Cortex-M4 processor in this work. Specifically, we build a formal model for the FreeRTOS ARM Cortex-M4 port and apply model checking to find errors in our models for FreeRTOS example applications. Intriguingly, several errors are found in our application models under different scheduling policies. In order to confirm our findings, we modify application programs distributed by FreeRTOS and reproduce assertion failures on the STM32F429I-DISC1 board.
Source: arXiv (Cornell University)
Authors: Lin, Chen-Kai, Wang, Bow-Yaw
Institution: Academia Sinica
Language: English
Topic: Real-Time Systems Scheduling
Subfield: Hardware and Architecture
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4320085619