STM32 Zephyr: Introduction to Zephyr – Welcome to Hang's Website!

Work in Progress

STM32 Microcontroller and Zephyr RTOS Development

Zephyr is an open-source, scalable, and secure real-time operating system (RTOS) designed for modern embedded and connected devices. It supports a wide range of hardware platforms, from small resource-constrained microcontrollers to more capable edge-computing systems.

Kernel: It manages threads, scheduling, interrupts, synchronization, timing, and other system resources.
Multithreading: Allows multiple threads to execute concurrently, enabling applications to handle several operations while maintaining responsiveness and real-time behavior.
Memory Management: Provides mechanisms for efficient and predictable use of limited memory, including dynamic allocation, memory pools, stacks, and memory protection.

Zephyr Workspace

zephyr-sdk-<version>/

zephyr_workspace/
|--.venv/
|--.west/
     |--config
|--bootloader/
     |--mcuboot/
|--modules/
     |--hal/
         |--cmsis/ - CMSIS core headers    
         |--stm32/ - STM32 HAL and LL layers               
     |--lib/
         |--cmsis-dsp/
         |--cmsis-nn/
     |--fs/
         |--fatfs/
         |--littlefs/        
|--zephyr/
|--tools/     
|--apps/  - source of projects
    |--project_1
    |--project_2
|--build/ - build of projects
    |--project_1
    |--project_2

zephyr-sdk-<version>/

zephyr_workspace/
|--.venv/
|--.west/
     |--config
|--bootloader/
     |--mcuboot/
|--modules/
     |--hal/
         |--cmsis/ - CMSIS core headers    
         |--stm32/ - STM32 HAL and LL layers               
     |--lib/
         |--cmsis-dsp/
         |--cmsis-nn/
     |--fs/
         |--fatfs/
         |--littlefs/        
|--zephyr/
|--tools/     
|--apps/  - source of projects
    |--project_1
    |--project_2
|--build/ - build of projects
    |--project_1
    |--project_2

|--zephyr/
     |--arch/
     |--boards/
     |--cmake/
     |--drivers/
     |--include/
     |--kernel/
     |--samples/
     |--scripts/
     |--soc/
     |--subsys/
     |--tests/
     |--west.yml - manifest
     
arch/     - CPU architecture support  
boards/   - Board definitions, DeviceTree, Kconfig, and default settings
cmake/    - CMake build-system modules
drivers/  - Hardware drivers: GPIO, I2C, SPI, UART, ADC, sensors, etc
include/  - Public Zephyr API headers   
kernel/   - Kernel: scheduler, threads, synchronization, timers
samples/  - Example and reference applications
scripts/  - Build, configuration, flashing, testing, and helper tools  
soc/      - Vendor- and SoC-specific support
subsys/   - System services: logging, shell, networking, settings, etc
tests/    - Kernel, driver, subsystem, and API tests

|--zephyr/
     |--arch/
     |--boards/
     |--cmake/
     |--drivers/
     |--include/
     |--kernel/
     |--samples/
     |--scripts/
     |--soc/
     |--subsys/
     |--tests/
     |--west.yml - manifest
     
arch/     - CPU architecture support  
boards/   - Board definitions, DeviceTree, Kconfig, and default settings
cmake/    - CMake build-system modules
drivers/  - Hardware drivers: GPIO, I2C, SPI, UART, ADC, sensors, etc
include/  - Public Zephyr API headers   
kernel/   - Kernel: scheduler, threads, synchronization, timers
samples/  - Example and reference applications
scripts/  - Build, configuration, flashing, testing, and helper tools  
soc/      - Vendor- and SoC-specific support
subsys/   - System services: logging, shell, networking, settings, etc
tests/    - Kernel, driver, subsystem, and API tests

Reference

[1] Zephyr Project Documentation
[2] Zephyr API Reference
[3] Samples and Demos
[4] Supported Boards and Shields