GyrOS Documentation

GyrOS is an open source portable real time operating system (RTOS) with an easy to use C API. It is easy to port to new platforms, partly because it is written in C, but mostly because the bits that must be ported are few and clearly defined.

Features

• Easy to port to new architectures.
• Preemtive multitasking.
• Small memory footprint (both code and RAM).
• Low power consumption by use of dynamic timer ticks.
• Debugging support to catch common usage errors and see current task status.
• Hook support to add custom code to context switches and interrupt handlers.
• Tracing support to study real time behavior of tasks and synchronization object activities.
• Several synchronization techniques:
  • Semaphores (binary or counting)
  • Mutual exclusion (mutex) with priority inheritance
  • Condition variables
  • Read/write locks
  • Message queues
  • Task suspend and resume
• Periodic and one shot timers.
• Permissive BSD-style license allowing for both commercial and non-commercial use.

Supported hardware

ARM based:

• Atmel AT91SAM7S (ARM7TDMI core)
• STMicroelectronics STR91x (ARM966E-S core)

Further reading

• Building GyrOS
• Porting GyrOS
• Application examples