Kursinformation

Real-Time Systems - Course MA01 Overview

Prof. Dr.-Ing. Birger Mysliwetz

• Enable students to design, implement and test software for real-time multitasking applications

• Get insight into the problems associated with (embedded) real-time computing
• Know and be able to apply real-time software design aspects
• Understand the advantages of using real-time operating systems
• Get hands on experience in programming & testing embedded real-time applications

• Basic understanding of the structure & working principles of microcomputers
• Elementary knowledge of general purpose OS structure & working principles
• Programming experience with a block structured high level language, preferably ANSI C (or C++)

Lecture Topics

• Examples & Application Areas of Real-Time Systems
• Technical Terms and Definitions; Hard vs. Soft Real-Time Requirements
• Working Principles of General Purpose Operating Systems; Processes; Threads; Tasks; Basic Scheduling Principles and Variants
• Real-Time Systems Concepts and Real-Time Software Design; Rate Monotonic Approach (RMA) for Priority Assignment; Reentrant Functions; Semaphores
• Mutual Exclusion; Shared Resources; Synchronization; Deadlocks; Priority Inversion; Intertask-Communication
• Overview of Commercial Real-Time Operating Systems
• Introduction to the Real-Time Kernel MicroC/OS-II; System Calls; Task Structure; Application Structure; Special/System Specific Tasks

Practical Lab Exercises

• Processes, threads and related system calls under Windows-11 on a PC; analysis of fundamental real-time properties of Windows-11.
• Introduction to an ARM Cortex-M based microcontroller target and embedded software development toolchain; implementation and timing analysis of a μC/OS multitasking application for step motor control on above microcomputer; statistics function and CPU load measurement.
• Using semaphores under μC/OS to control access to shared resources; priority inversion; synchronization; application of tracing for task timing analysis.
• User-interface for step motor control via task; task/task & ISR/task communication; priority assignment; buffer size calculation.
• Application of μC/OS memory management and message passing functions for task/task & ISR/task communication.
• Test of special cases; closed loop control application with user-interface and task/task & ISR/taskcommunication; priority assignment.

Duration 1 semester, 4 hrs per week, ca. 40% lectures and 60% lab exercises
Application oriented course in EE/IT- and ING-Master's program.
90% Written examination ( in examination period ), 90 minutes, no material allowed
Credits
5 ECTS credit points