2. Repository Structure

The foxBMS 2 repository is structured into the following parts (see Table 2.1). All directory names are abbreviated (e.g., conf for configuration) to ensure a compact repository structure and avoid long command lines during build steps.

Table 2.1 foxBMS 2 repository structure

directory	long name	content description
.	repository root	the repository root contains the license information, a changelog and the main build script
conf	Configuration	contains all high level configurations
docs	Documentation	documentation source files
hardware	Hardware	hardware schematics and layouts
src	Source	parent directory for all source files for the BMS embedded software
tests	Tests	tests for embedded sources, the tool chain, the conda environment and scripts
tools	Tools	tools needed to build foxBMS 2 binaries and additional tools to work with foxBMS 2

2.1. Configuration directory conf

The conf directory is structured into the following parts (see Table 2.2).

Table 2.2 Detailed description of the conf directory

directory	long name	content description
conf/bms	Battery Management System	configuration of the BMS (e.g., which measurement IC is used)
conf/cc	C compiler	compiler configuration (e.g., compiler flags)
conf/env	Environment	environment specifications configuration files (e.g., Conda package dependencies)
conf/fmt	Formatting	formatting rules for source files
conf/gl	Guidelines	Guideline check configuration
conf/hcg	HALCoGen	HALCoGen configuration files for the Hardware Abstraction Layer
conf/spa	Static Program Analysis	configuration and template files for static program analysis
conf/tpl	Templates	template files for source files
conf/unit	Unit tests	unit test configuration files

2.2. Documentation directory docs

This directory contains the general documentation and links the API documentation generated by Doxygen.

2.3. Hardware directory hardware

This directory contains the hardware schematics and layouts.

2.4. Source directory src

The src directory is structured into the following parts (see Table 2.3).

Table 2.3 Detailed description of the src directory

directory	long name	content description
src/app	Application	sources files for the BMS application
src/hal	Hardware Abstraction Layer	source files of the Hardware Abstraction Layer
src/opt	Optional	optional source files (e.g., specific cell parameters
src/os	Operating System	source files of the Operating System

2.5. Tests directory tests

The tests directory is structured into the following parts (see Table 2.4).

Table 2.4 Detailed description of the tests directory

directory	long name	content description
tests/axivion	Axivion	configuration files to describe the architecture of foxBMS 2. Additional static program analysis configurations are stored here (e.g., MISRA-C)
tests/scripts	scripts	unit test of scripts (e.g., Python, shell)
tests/unit	unit tests	unit tests for embedded sources

2.6. Tools directory tools

The tools directory is structured into the following parts (see Table 2.5).

Table 2.5 Detailed description of the tools directory

directory	long name	content description
tools/src	Cyclic redundancy check	Jupyter notebooks to help generate CRC-functions
tools/debugger	Debugger	Debugger setups and usage
tools/gui	Graphical User Interface	GUI to interact with foxBMS 2 and foxBMS 2 generated data
tools/ide	Editor/Integrated Development Environment	Setups for editors and IDE
tools/utils	utils	unspecific helper tools and scripts
tools/waf-tools	waf tools	waf tools that are not part of vendored waf
tools/waf	waf	waf binary