1. Cyclic executives for Bare Hardware
Chapter 4

2. Topics Simple loop cyclic executive Frame/slots
Table-based predetermined schedule cyclic executive
Periodic, aperiodic and interrupt-based task

3. The basic systems
Several functions are called in a prearranged sequence
Some kind of cooperative scheduling
You a have a set of tasks and a scheduler that schedules these tasks
Types of tasks: base tasks (background), interrupt tasks, clock tasks
Frame of slots, slots of cycles, each task taking a cycle, burn tasks to fill up the left over cycles in a slot.

4. Blind Bingo Display(); Read input(); Loop: A c b g k update display();
If all done exit();
End Loop;
A c b g k
V n m L s
E t y w f
D v z x e

5. Frame/slot/cycle pre-determined schedule
Example
Your week is frame of 7 slots, each with 24 cycles.
it repeats itself
Lets look at a demo program

6. Lets analyze the sample program
Change task times
Lets analyze repetition rate of the tasks and how it relates to the task table