Search Results for "scheduling"

AVR ATmega port of freeRTOS A port of freeRTOS which can be flexibly flexibly configured use almost any available Timer on AVR ATmega devices and will operate with almost any classic Arduino device from Arduino, SeeedStudio, Sparkfun, Freetronics or Pololu. Going forward this repository will be updated less often and only with major releases. Please check at Github for the latest commits. https://github.com/feilipu/avrfreertos The Goldilocks Analogue story is told here....

This project is now in the research and development stage. It is intended for very small microcontrollers with a single processor and represent simple multithreading kernel what written by C language. Is planning create implementations for AVR8 and STM8, may be. Now it is suspended until better time.

...It presently supports the AVR and MSP430 architectures. The advantages of PRTOS are: It has the smallest footprint of any true preemptive system: 1.9kB for basic scheduling and task control, 5.1kB with all the features below (AVR '328 / gcc -Os); Only 950 lines of code implement all of the RTOS features (SLOC-L); The system is well documented with a comprehensive manual, well-commented source code, and a test suite demonstrating the features; The system is proven - it has been in use since 1982 with applications in in-vitro medical equipment, process control instrumentation and industrial machinery; PRTOS is released by Cleveland Engineering Design, LLC - developer of the CoRTOS cooperative RTOS https://sourceforge.net/projects/cortos-simple/ and the CTREE analysis tool https://sourceforge.net/projects/ctree-graphic-tree-generator/ Commercial licensing is available

The project contains the following modules: * Main Controller Module which is responsible for scheduling and switching the water pumps, monitoring the water level and temperature, and reading the Soil Moisture Sensors. The module has a 4 line alphanumeric LCD that makes the system easy to use. * Sensor Controller Module is attached to the Main Controller Module via RS232 interface. This module is the master controller for the Soil Moisture Sensors and also contains a Dallas 1-Wire interface for temperature sensors...

This is a fork of FreeRTOS 7.3.0 using an earliest deadline first scheduler instead of the standard fixed priority scheduler BIG FAT WARNING: THIS IS HIGHLY EXPERIMENTAL SOFTWARE! USE AT YOUR OWN RISK! NEITHER REAL TIME ENGINEERS NOR THE AUTHOR(S) OF DEADLINERTOS PROVIDE ANY WARRANTY!

Super lightweight task scheduler aimed at 8 bit AVR ATmega micro-controllers (perfect for Arduino), although it can easily be used on other hardware like Microchip PIC. It uses simple round-robin scheduling so no priority levels can be set. You choose the time interval by calling dispatchTick(), this is usually in a timer interrupt. Range for number of tasks: 0 to 255 tasks Range for delay: 0 to 65535 ticks Each task only uses 5 byte of RAM. The one task LED blink example only uses 5 bytes of RAM and 476 bytes of program memory for the whole program.

Kmax 8bit microkernel for AVR ATMega MCUs written in assembler (AVRASM & GCC compatible) with a C API. Core features include priority-based preemptive round-robin scheduling, mutexes, fifos and semaphores with a focus on speed and ease of use.

...Currently a simple context switching implementation for the XMOS XS-1 architecture (Gn, Ln products). Allows a user to run low speed processes on a single thread using time sliced scheduling.

K-OS is an open-source realtime-operating-system based on the OSEK/VDX standard aimed at compiler and microcontroller independence. Currently we support Motorola (Freescale) HC12/HCS12/HCS12X targets.

...The source code is available in the SVN repository: https://sourceforge.net/p/xrt/code/6/tree/trunk/ and consists in two folders: 1) /X-RT : A portable multiprocessor scheduling framework supporting scheduling periodic real-time tasks according to the G-EDF (Global Earliest Deadline First) scheduling platform. Current version supports major POSIX systems (Linux, QNX). 2) Hardware_GEDF_Scheduler: is a hardware implementation in VHDL (targeting FPGAs) of the G-EDF multiprocessor scheduling policy.