4. Real-time executive

4.1 Role of the executive

Let's continue our study of level control (see figure 1 ), and adopt asynchronous task management of this application on a single-processor ECU by means of a real-time executive. A real-time executive is sometimes described as "event-driven". This description is a good illustration of its behavior.

• In fact, the motivations behind calls to the executive are the consequence of three causes:

  • occurrences of process events. In concrete terms, the call to the executive is made by the procedure for receiving and...