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AvRtos

Posted on by Robin Ding Leave a comment Operating System Kernels
4.0

AvRtos is a small, preemtive, priority based real time operating system for Atmel AVR and ARM microcontrollers.
It was written in C.
AvRtos provides message queues and semaphores for task synchronization. It uses a static memory allocation scheme.
AvRtos is nearly the smallest RTOS out there. Even pico]OS is much bigger.

AvRtos can be compiled using gcc compiler. There is a AvrStudio 4 and Eclipse project file to get the example code working very quickly.

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Website http://avrtos.sourceforge.net
Tags
License GNU Library or Lesser General Public License version 2.0 (LGPLv2)
Features
  • Small footprint
  • Preemtive multitasking
  • Needs only 1 kByte of flash memory for code
  • Needs only 11 Byte RAM for one task control block
  • Needs only 5 Byte RAM for one semaphore control block
  • Needs only 13 Byte RAM for one queue control block
  • Semaphores for task synchronization
  • Queues for task synchronization
  • AVR, ARM-Cortex-M3 and ARM-Cortex-M4