A tour of Zephyr
Course Objectives ● Background ● Why use Zephyr RTOS? ● Application Examples ● Supported Boards ● Architecture Overview ● Kernel Services ● OS services ● Connectivity ● Security ● Safety ● Licensing ● Releases Lifecycle and Maintenance ● Development Environment. ● Zephyr Resources
Zephyr Project Kickstart
Overview ● Zephyr Application directory ● Common Layouts ● Configuration files ● Cmake and ninja ● Device Tree ● KConfig ● West ● Build ● Flashing ● Using Qemu ● Using an IDE
Configuring and Building Zephyr Application
Configuration System ● Interactive configuration ● Custom Kconfig ● Why device trees? ● Device tree Syntax and Structure ● Device Tree bindings ● Device Tree programmatic access ● Overlays ● Troubleshooting device Trees ● DeviceTree vs KConfig
Tasks, Scheduling and Memory Management
Kernel services overview ● Threads (system, user) ● Scheduling ● CPU idling ● Kernel Timing ● Timers ● Memory management
Debugging Zephyr Application
Debugging Overview ● Zephyr Shell ● Logging subsystem ● Logging Configuration and usage ● system panic ● Core dump subsystem ● Core dump configuration ● Inspecting Core dump ● Thread analyser ● Using Qemu ● Using JTAG ● Use case: stack overflow
Hardware Integration
Introduction ● Device Model ● init sequence ● subsystem API ● Adding and Initializing a device ● Init level ● Device Tree Overlays ● dts to C ● Using a device ● Multiple device instances ● Available Driver Samples ● Outlook: middleware
Interrupts and Data Passing
Critical Section ● Semaphore ● Mutex ● Other synchronizations ● When to use? ● Data Passing Overview ● Handling interrupts ● ISR ● Threads and interrupts ● Workqueue ● SMP case ● Annex: Other services (Atomic services, floating point, Version, Fatal Errors, Thread local storage).
Writing Zephyr Application
Overview and details of some of the OS services offered by Zephyr.
Testing and Quality Assurance
Footprint and Memory Usage ● CI/CD with Zephyr ● Generating SBOM ● Helping securing device ● Thread Analysis ● Other tools.
Practical Real Time Design
Dimensioning the stack ● MPU ● How many threads? ● Scheduling Design and analysis ● Real-time best practices ● Using multiple cores ● HAL and OSAL
