IntrOS

Free, simple and tiny cooperative operating system (OS) designed for deeply embedded applications.

Features

• kernel can operate in cooperative (non-preemptive) mode only
• kernel can operate with 16, 32 or 64-bit timer counter
• kernel can operate in tick-less mode
• spin locks
• once flags
• events
• signals with protection mask
• flags (any, all)
• barriers
• semaphores
• mutexes
• condition variables
• memory pools
• stream buffers
• message buffers
• mailbox queues
• event queues
• job queues
• timers (one-shot, periodic)
• c++ wrapper
• all documentation is contained within the source files
• examples and templates are in separate repositories