Overview of the RTOS Kernel Project
In previous tutorial, I've gave you the theoretical background about ARM Cortex-M3/4 processors. In here, I will explain the RTOS kernel project structure. You can access and inspect the kernel implementation from here . The project gives the end-to-end development environment for STM32F446RE with the builtin kernel. I've built a statically allocated and fully preemptive kernel. For now, it's…
This overview discusses the RTOS kernel project for ARM Cortex-M3/4 processors. The project provides an end-to-end development environment for the STM32F446RE microcontroller. The current version features a statically allocated, fully preemptive kernel without additional mechanisms such as queues, mutexes, or thread notifications.
The project directory includes various components: bin contains output artifacts, docs holds development notes, drivers stores CMSIS and HAL drivers, lib holds driver libraries, Renode description files, and src contains an example firmware source with the custom kernel. The build system uses Makefiles with two commands: make lib to build the static driver library, and make bin to build the firmware.
The example firmware demonstrates kernel usage and generates firmware.elf and firmware.bin files. The project's main components include main.h, peripheral.c, syscalls.c, it.c, main.c, os_core.h, and os_core.c. The os_ prefix denotes kernel-specific files, while src includes example firmware code. To simulate the kernel workflow, Renode is recommended, as real hardware access may not always be available.
The project's GitHub page offers detailed instructions for downloading and using Renode. Future tutorials will delve deeper into the processor-specific files, os_core.h and os_core.c.
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