2110682 Embedded and Real-Time Systems

Department of Computer Engineering
Faculty of Engineering, Chulalongkorn University

Course duration    : Jan-April 2021
Lecturer                : Prabhas Chongstitvatana, Prof.
                            office Eng build 4, Floor 18, room 13
                            email: prabhas at chula dot ac dot th
Lecture                : Sunday 13.00-16.00 online

The content of the course is a mixed between hardware and software.  Embedded systems are computer systems with special requirement on constraints such as low power, high integration, real-time. On the hardware side, it includes embedded processors and low level programming, logic design, integrated circuits.  On the software side, it includes Operating systems scheduling and real-time constraints.  Here are the list of topics:
Introduction to embedded and real-time systems
Assembly level programming
Memory, Peripherals and Microprocessor interface
Operating systems and task scheduling
Real-time systems and their requirements
Internet of Things

How we learn

We learn by doing both hardware and software.  The activities include embedded system model construction, some programming, and hands-on session. The assignments will be given out periodically throughout the term. A small project will be given around midterm. Students must present the results of their projects.  At the second half of the semester, a real hardware will be presented.  Students are assigned to design and implement a small embedded system.  The project will be presented in the class. The final exam is "open book" and has an element of system design plus some "pseudo" programming.

old lecture 2020


24 Jan 2021   The class starts. 

. . .


Introduction    Embedded Processors 
Embedded Systems Design
IOT board (platform for interrupt programming)   demo-rz.txt
example of using IoT board (in Rz):  stopwatch
programming with interrupt   counting events
Assembly language S2 version 1: 32-bit processor  
example of writing assembly language:   find max

Rz language and its compiler
logic design  Basic Logic  
Operating systems and task scheduling  basic OS concepts
Multitask-OS (MOS)  (in assembly)  mos2.txt  (in Rz)  mos-rz.txt
lecture from Matt Welsh, Harvard,   semaphores.pdf
semaphore:  demo from William Stallings, U. of Queensland
implementing semaphores      example  reader-writer mos-rz2.txt
Cooperative Processes
Cooperative Multitask OS (CMOS)
Project discussion
Project presentation
real-time systems RTOS   real-time scheduling
Embedded Systems Communication 
Embedded systems practice (Arduino Board)
Actual hardware:  Arduino experiment
memory,   memory and interrupt i/o   memory system design
peripherals and interface  
    peripherals  (counter, timer, PWM, step motors, LED display, LCD, UART, USB)
    digital/analog conversion  (ADC, DAC, MCP4922  code experiment)
Internet of Things: Everything as a service
I2C bus    RTC experiments  DS1307  (polling) (interrupt)
final exam
final project presentation


31 Jan 2021   Try to run 'stopwatch'  to familiarize yourself with tools (IoT board)
7 Feb 2021     Modify 'mos-rz.txt'   to add one more process that print ten odd numbers.
21 Feb 2021  Use LogicWork to build a full-adder


. . .

Recommended Textbooks

1. Philip Koopman, Better Embedded System Software, Drumnadrochit Press, 2010, ISBN-10: 0-9844490-0-0.
2. Ball S, Embedded Microprocessor Systems: Real World Design 2nd edition, Newnes 2000
3. Vahid F, Givargis T, Embedded System Design: A Unified Hardware/Software Introduction, Wiley 2002
4. Kopetz H, Real-Time Systems: Design Principles for Distributed Embedded Applications, Kluwer 1997

Additional Materials

Transistor level simulation of an antique CPU.  6502 is used in the iconic Apple II machine.

Course Assessment

Assignments            10%
Mid project             30%
Final project           30%
Final exam              30%


IoT board:  Rz compiler, S21 assembler, simulator (with MOS and input):  iot-rz-19.zip 
s21 tools :    assembler and simulator  s21-3.zip
rz3.6.1 compiler with s21 assembler and simulator  rz361-2.zip
MOS in Rz  mos-rz.txt 
MOS with semaphore   mos-rz2.txt
LogicWork5    tutorial
Arduino 1.0.5     boards.txt (configuration file)


Slides and presentations are kindly permitted by Setha Pan-gnam, Chalermek Intanagonwiwat, Krek Piromsopa

last update 28 Mar 2021