DimOS RT is a preemtive real-time kernel with EDF-scheduling for Atmega microcontorllers. It is inpired by the research paper from Dan Henriksson and Anton Cervin.

RGB-LED

A test application for Atmega8 at 16MHz: cycle through HSV-values with 5 independent tasks:

• 1x heartbeat
• 1x hsv2rgb converter/feeder
• 3x PWM driver/reader for each color accordingly

The UART 9600,8n1 feeds current running task, although due to its speed limitation it's not in sync with real context switches.