| RT5 | Zephyr Real Time Programming |
Real-time programming applied to the Zephyr operating system
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Objectives
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- Theoretical course
- PDF course material (in English) supplemented by a printed version.
- The trainer answers trainees' questions during the training and provide technical and pedagogical assistance.
- Practical activities
- Practical activities represent from 40% to 50% of course duration.
- Code examples, exercises and solutions
- One PC (Linux ou Windows) for the practical activities with, if appropriate, a target board.
- One PC for two trainees when there are more than 6 trainees.
- For onsite trainings:
- An installation and test manual is provided to allow preinstallation of the needed software.
- The trainer come with target boards if needed during the practical activities (and bring them back at the end of the course).
- Downloadable preconfigured virtual machine for post-course practical activities
- At the start of each session the trainer will interact with the trainees to ensure the course fits their expectations and correct if needed
- Good C programming skills (see our L2 - C language for Embedded MCUs course)
- Total: 5 days
- From 40% to 50% of training time is devoted to practical activities
- Some Labs may be completed between sessions and are checked by the trainer on the next session
- Any embedded systems engineer or technician with the above prerequisites.
- The prerequisites indicated above are assessed before the training by the technical supervision of the traineein his company, or by the trainee himself in the exceptional case of an individual trainee.
- Trainee progress is assessed in two different ways, depending on the course:
- For courses lending themselves to practical exercises, the results of the exercises are checked by the trainer while, if necessary, helping trainees to carry them out by providing additional details.
- Quizzes are offered at the end of sections that do not include practical exercises to verifythat the trainees have assimilated the points presented
- At the end of the training, each trainee receives a certificate attesting that they have successfully completed the course.
- In the event of a problem, discovered during the course, due to a lack of prerequisites by the trainee a different or additional training is offered to them, generally to reinforce their prerequisites,in agreement with their company manager if applicable.
Course Outline
- Base real time concepts
- The Real Time constraints
- Multi-task and real time
- Tasks and Task Descriptors
- Content of the task descriptor
- List of task descriptors
- Context Switch
- Zephyr Project
- Zephyr Ecosystem
- Why use Zephyr
- Install and use Zephyr
- Build and Configuration Systems
- West
- CMake
- Kconfig and configuration overlay
- Configuration tools: menuconfig and guiconfig
- Operation without Threads
- GPIO
- Random Number Generation
- Utilities
- Data Structures
- Single-linked List
- Double-linked List
- Ring Buffers
| Exercise: | Hello World from Zephyr, configure and blink LEDs using Zephyr | |
| Exercise: | Manage Zephyr linked list and understand container_of macro | |
- Task Scheduling and Preemption
- Tick based or tickless scheduling
- Scheduling systems and schedulability proof
- Fixed priorities scheduling
- RMA and EDF scheduling
- Scheduling through Zephyr
- Scheduling Algorithm
- Cooperative Time Slicing
- Preemptive Time Slicing
- Thread Control Block
- Creating Threads
- Threads Priorities
- Thread States
- Main and Idle Threads
- Delays
- Changing Thread Priority
- Suspending Threads
- Kernel Structures
- Simple linked-list ready queue
- Red/black tree ready queue
- Traditional multi-queue ready queue
- Thread Custom Data
- Scheduling Traces
- Runtime Statistics
- User-Defined Tracing
- Percepio Tracealyzer
| Exercise: | Create and manage threads | |
| Exercise: | Create periodic threads | |
| Exercise: | Create config overlay for visual trace diagnostics using Tracealyzer | |
- Memory Managers
- Dynamic memory managers
- K_heap
- System heap
- Memory Slabs
- Memory Blocks
- Heap Listeners
- Thread Resource Pools
- Stack Overflow detection
- User Mode
- Memory Domains
| Exercise: | Understand dynamic memory allocation in Zephyr | |
| Exercise: | Display threads information and detect stack overflow | |
- Mutual Exclusion
- Critical Sections
- Mutexes
- Gatekeeper threads
- Atomic
- Lock-Free Data Structures
- SpinLocks
| Exercise: | Implement mutual exclusion between threads | |
- Synchronization
- Semaphores
- The Readers/Writer Problem
- Condition variables
- Events and Event Groups
- Polling
| Exercise: | The producer-consumer problem, synchronize and avoid concurrent access problems | |
| Exercise: | Understanding event bit group by synchronizing several threads | |
- Message Queues
- Pipes
- Queues
- FIFOs
- LIFOs
- Mailboxes
- Stacks
- Zephyr Bus (Zbus)
| Exercise: | Create a print gatekeeper thread using message queue | |
- Threads and Interrupts
- Interrupts in zephyr
- Interrupts on ARM Cortex-M
- Handler thread
- Queue within an ISR
- Workqueue Threads
- Power Management
| Exercise: | Understand how to wait on multiple events and interrupt safe APIs | |
| Exercise: | Understand how to pass data using Queues from an interrupt to a thread | |
| Exercise: | Create and submit work items from interrupts to custom WorkQueue | |
- Timers
- Defining a Timer
- Using a Timer Expiry Function
- Timer types
- One-shot timers
- Auto-reload timers
- Timer Commands
| Exercise: | Understand the use of one-shot and auto-reload timers | |
- Why to use modules?
- Module structure
- Out-of-tree module
- YAML files
- Module CMakeLists.txt
- How to add and use custom Kconfigs
| Exercise: | Create a simple hello world module | |
| Exercise: | Create a module that uses custom Kconfig options | |
- Introduction to Device Drivers
- Overview of the Zephyr device driver model
- Standard Drivers
- The struct device
- Subsystems
- API Extensions
- Initialization Levels
- Dependencies between device drivers
- Define devices programmatically
- Adding In-Tree Code to Zephyr Source Code
| Exercise: | Create a driver that respects the Zephyr Device Driver Model and define devices | |
| Exercise: | Writing in-tree drivers | |
- Overview of Device Tree (DT) and its role in Zephyr
- Device Tree VS Kconfig
- Device Tree node structure
- Device Tree bindings
- Overlay and yaml files
- APIs to access device tree properties
- Write device drivers using device tree APIs
- Device Tree in Zephyr VS Linux
| Exercise: | Create a driver that uses custom device tree and Kconfig | |
Duration
5 days
Cost
3070 € HT
Calendar
To book a training session or for more information, please contact us on info@ac6-training.com.
Registrations are accepted till one week before the start date for scheduled classes. For late registrations, please consult us.
You can also fill and send us the
registration form
This course, designed for face-to-face delivery, can be provided either in our Paris training center or, worldwide, on your premises.
Scheduled classes are confirmed as soon as there is two confirmed bookings. Bookings are accepted until 1 week before the course start.
A version tailored for live online delivery is available under reference oRT5 - Zephyr Real Time Programming
Last update of course schedule: 5 June 2023
Booking one of our trainings is subject to our
General Terms of Sales
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