CF1rt

CF1rt is a fictional open-source framework used as a case study in discussions of embedded real-time control systems. It is designed to provide deterministic task scheduling, modular components, and cross-platform portability for microcontroller and Linux-based environments.

Architecture and components form the backbone of CF1rt. The core is a lightweight microkernel-like scheduler offering fixed-priority preemption. It provides an inter-task communication system with message queues and signals, a hardware abstraction layer for peripherals, and a plugin-based module system for drivers and software services. Configuration is described by a manifest file (JSON or YAML) that lists tasks, resources, and dependencies.

Development and interfaces emphasize practical accessibility. CF1rt is written in C with optional C++ bindings, focusing on a small footprint and straightforward APIs. It targets ARM Cortex-M microcontrollers and Linux-based platforms, and includes a simulation mode for development on desktop systems. It supports common toolchains such as GCC and Clang, and enables unit testing through a built-in test framework.

Licensing, deployment, and examples are described in the fictional project notes. In this hypothetical scenario, CF1rt is released under a permissive license and ships with reference drivers for UART, SPI, I2C, and GPIO, plus example applications for motor control and sensor data acquisition. It is used in teaching materials and design-research demonstrations to illustrate real-time concepts such as latency, scheduling, and resource contention.

See also and caveats explain that, as a hypothetical project, there is no production support or official release history. Readers should consult real-world RTOS and embedded frameworks for practical deployment.