Create Your Own Embedded Operating System

Hands-on Embedded Operating System Development from the ground up

What you'll learn

Learn how to build an embedded system from the ground up on the bench. This will give you a great insight into the target platform, but is not mandatory

Learn how to program a microcontroller from scratch by setting up wiring, clocking, connecting the programmer, and flashing binary applications to the chip

Get a deep insight into what an operating system is, when you need one, and how it works on embedded platforms

Understand Kernels, Multitasking, Context Switching, Scheduling, Critical Sections, and Task Synchronization from a practical perspective

Understand CPU Architectures in general and how to choose a target CPU. Deep understanding of the MIPS32 Arch internals, like Registers and Memory Layout

Programming of Advanced Applications for the Microchip PIC32 (MIPS32) microcontroller

Develop Board Support Packages (BSP) for a Target Platform

Deep and practical understanding of data communication over the SPI and I2C busses, as well as serial communication via UART modules (including USB-to-Serial)

Learn how to develop a Preemptive and Cooperative Kernel based on CPU-specific assembly code for Task Context Switching

Learn how to provide efficient internal services for Time, Task, and Memory Management

Learn how to create Inter-Process Communication (IPC) with Mailboxes and Message Queues

Get a deep understanding of - and learn how to implement - Real-Time Constraints in order for an operating system to be considered an RTOS (Real-Time OS)

Understand the Priority Inversion problem and learn how to implement specific countermeasures

Learn Device Driver development. We will develop drivers step by step for our Target Platform's peripherals, such as the display and the MicroSD card

Interfacing User Application to the OS

Understand how to write a binary image to the Target Platform's Program Flash at runtime, and create a USB/UART Bootloader

Learn how to make a Porting of the OS, making it executable on different CPU Architectures

Understanding of the Target Platform's Electrical Schematic and PCB Layout (optional)

Requirements

Basic C programming skills are recommended but not mandatory. The code implementation will be performed hands-on, with explanation in real-time. No particular prior knowledge is required. If you have any questions, simply drop me a message: I will answer to you.

Description

In this course you will learn how to create an Embedded OS, really from the ground up. You will be guided step by step in the creation of each and every technical software module composing an embedded operating system, as well as in the development of your own target device on the bench (optional: you can use a free simulator or a ready-to-use Starter Kit), starting with basic electronic components and an industry-standard processor.You will learn how to create device drivers step-by-step for real hardware components like displays, SD card storage, Wi-Fi, Inertial Movement Units (IMU, i.e. accelerometer and gyroscope), USB communication, analog Joysticks, thermal camera modules and more.By the end of this course you will master system-level programming in the assembly and C languages, as well as the technical processes governing the interaction between CPU and memory. Thanks to the numerous hands-on experiences and practical demonstrations, you will develop the ability of gaining full control on the machine by manipulating CPU registers, stack, instruction pointer, return addresses, and much more. At the end of the software development part, you will learn how to create a porting to another architecture, like x86.Although the hardware development part is optional, if you have access to an electronics lab you will also develop the ability of prototyping your circuit, designing and assembling your own target PCB (Printed Circuit Board).

Overview

Section 1: Set, Ready, Go!

Lecture 1 Course Presentation

Lecture 2 Motivation

Lecture 3 Environment Preparation

Section 2: Base Electrical Circuit

Lecture 4 Prototype Design

Lecture 5 CPU Breakout Board

Lecture 6 The First Program

Lecture 7 Simulating Without Hardware

Section 3: Operating System Basics

Lecture 8 Introduction to Tasks

Lecture 9 Introduction to Multitasking

Lecture 10 Shared Resources

Lecture 11 Task Switching

Lecture 12 Kernels

Lecture 13 Schedulers

Lecture 14 Critical Sections

Lecture 15 Deadlocks

Lecture 16 Introduction to Task Synchronization

Lecture 17 System Tick

Section 4: Target Platform

Lecture 18 CPU Architectures

Lecture 19 Choosing the right CPU

Lecture 20 MIPS32: CPU Registers

Lecture 21 MIPS32: Memory Layout

Lecture 22 The PIC32 Microcontroller

Lecture 23 Our Board VS Microchip's StarterKit

Section 5: Interrupts

Lecture 24 Interrupts Overview

Lecture 25 ISRs: Interrupt Service Routines

Lecture 26 Interrupt Latency and Interrupt Response

Lecture 27 Interrupts in our Operating System

Lecture 28 Testing Interrupts with the Software Interrupt

Section 6: BSP (Board Support Package)

Lecture 29 BSP Overview: What is the Board Support Package

Lecture 30 Setting up the System Timer

Lecture 31 Setting up the System Tick Interrupt

Lecture 32 Setting up the system's LEDs

Lecture 33 Testing LEDs: Flashing an S.O.S.

Lecture 34 UART: Explanation and Setup

Lecture 35 Testing the UART: Ping-Pong with a PC

Lecture 36 SPI: Explanation and Setup

Lecture 37 Testing the SPI: Ping-Pong with an Arduino

Section 7: Kernel

Lecture 38 The Base Infrastructure

Lecture 39 Implementing Tasks and TCBs

Lecture 40 Implementing Stack Management

Lecture 41 Implementing Context Switching in Assembly

Lecture 42 Task Management

Lecture 43 Implementing the Scheduler

Lecture 44 Starting the Operating System

Lecture 45 Time Management

Section 8: Event Management

Lecture 46 Event Management Concept

Lecture 47 Data Structures for Event Management

Lecture 48 Event Creation and Response

Section 9: Task Synchronization

Lecture 49 Implementing Mutexes

Lecture 50 Implementing Semaphores

Lecture 51 Priority Inversion Avoidance

Section 10: ITC (Inter-Task Communication)

Lecture 52 Implementing ITC with Mailboxes

Section 11: OS Development Project

Lecture 53 Download the Complete OS Sources

From embedded developers to hobbyists and enthusiasts who are willing to create their own Operating System.,This course is hands-on: you will be guided step by step through the creation of a working Operating System, from the ground up.