Scheduling of time enhanced c (TEC)

Real-time systems mainly consist of time or event-triggered tasks that must satisfy deadline-constraints and other limitations to the execution time. Scheduling of them is a common problem especially if no operating system can be used because of limited resources like code-size and CPU power. Previous approaches deal with multi-frame models to split tasks into smaller subtask that may be arranged at compile-time in a static way to cope with given deadlines. Handling of non-periodic events and context-switching problems demand a more dynamic scheduling. This paper presents an approach of using manually given information for timing constraints in order to rearrange the code to satisfy the deadlines automatically. The presented design is still able to handle events and to force the given functions to cooperate. Supporting hardware for producing timing-events may further help the system to organize the program-flow.