ChibiOS/RT is a free and efficient RTOS designed for deeply embedded applications. It offers a comprehensive set of kernel primitives and supports many architectures: ARM7, Cortex-M0, Cortex-M3, Cortex-M4, PowerPC e200z, STM8, AVR, MSP430, ColdFire, H8S, x86.
RTOS for Critical Systems
Pharos is a free open-source Real-Time Operating System for Critical Systems with the following characteristics: -Security: With memory and enhanced time partitioning. Each partition protected with hardware MMU/MPU and operating in user mode -Quality: Low cyclomatic, high comments, low nesting level, MISRA. -Mixed Criticality: Partition isolation. Native support for sporadic, periodic and aperiodic threads under a fixed-priority preemptive scheduler, including execution time protection (threads are prevented from executing for more time than they are configured to) -Determinism: Hard real-time determinism, most calls areO(1) and very few cases are O(Log(N)) - they are well identified in the user manual. Dynamic memory free Pharos takes ARINC and moves it one step further, improving responsiveness and isolation. Supports ARM R5, M4, 926EJ-S. We are a group of enthusiastic software developers that also implements client custom software. Contact: email@example.com
Rectangular Split, Addition and Subtraction , and Tree Structure
This project try to implement the rectangular calculation, such as split, addition, subtraction, it is base on line split. Also a Tree structure handler is provided in this project, together they can use to deal with the window split and window relationship in GUI(Graphical User Interface), I hope so :-p