HuskEOS

HuskEOS is a real-time operating system (RTOS) designed for embedded systems. It offers a priority-based preemptive scheduler and boasts impressive performance metrics, such as achieving 50,000 context switches per second on a Cortex-M4 configured at 16MHz.

Features

• Priority-based Preemptive Scheduler: Efficiently schedules tasks based on their priority.
• Performance: Achieves 50,000 context switches per second on Cortex-M4 at 16MHz.
• Memory Management: Memory footprint can be as low as 550 bytes. All memory is statically allocated, eliminating the need for a heap.
• Hardware Agnostic: The entire OS is hardware-independent except for an internal OS/CPU interface layer, allowing for portability across different platforms.
• Consistent API: Public modules have consistent API structures and naming conventions.
• Stack Overflow Detection: Supports stack overflow detection for each task with configurable fault handlers.
• Debugging Support: Collects runtime data for debugging, which can be turned off for reduced overhead.

Components

• Scheduler: Handles task scheduling and state management.
• Flags: Provides event flag objects for task synchronization.
• Mailbox: Allows tasks to pass single pieces of data between them.
• Memory: Emulates dynamic memory allocation with block allocation and overflow/underflow detection.
• Semaphore: Designed for counting and signaling. For mutual exclusion, Mutex is used.
• Mutex: Mutual exclusion semaphore with priority inheritance to prevent priority inversion.
• Queue: Offers fully configurable FIFO message queues.