Kconfig for ARM based MCUs

This example provides the ability to configure components and application using kconfig language Originally created for STM32 microcontrollers but it can be used for any ARM based MCUs

Development environment consists of:

• Ubuntu OS
• STM32CubeIDE
• STM32CubeMX
• STM32CubeProg
• Cppcheck
• Cloc

Install

  sudo apt install bison flex

Get GNU Arm Embedded Toolchain

  sudo apt install gcc-arm-none-eabi

  arm-none-eabi-gcc --version

Alternative way is to download GNU Arm Embedded Toolchain from the website https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads and setup path to compiler binaries by adding the following line into ~/.profile with your path to toolchain folder:

  export PATH="$PATH:$HOME/path/to/gcc-arm-none-eabi-8-2019-q3-update/bin"

Log out and log back in to update PATH variable

Get project and build

  git clone https://github.com/mcu/kconfig.git

  cd kconfig
  make menuconfig
  make

How it works

At first, "make" utility use "ls" command recursively to create a list of all folders in the "components", "application". Then "make" creates a list of all *.s, *.c, *.ld and *.a files in the project (ASSOURCES, CSOURCES, LINKERS, LIBS). After that "make" starts the process of compiling, linking and generating the binary file. It's easy but more correctly is to build components separately into libraries

You can add *.h, *.c files and folders as you want into "components", "application" folders. All source files will be compiled

Comment

The implementation of makefile has its pros and cons. Since all header files are visible to each source file during the build process it is not recommended to use this example for large projects