S2E-AOBC

Overview

• S2E-AOBC is the user-side repository of the S2E for the AOCS module developed by ISSL/UT, Seiren, and JAXA.
• Support platforms
  • Windows Visual Studio 2022 C++ compiler with 32bit build
  • Linux g++ compiler version 11 with 32bit build
  • We use GitHub Actions to check the build errors in these compilers continuously.
• How to use
  • The main developers of the AOCS module directly use this repository to add new features and improve the module.
  • General users of the AOCS module do not need to use and edit this repository directly. They need to create a project-specific repository and define spacecraft-specific parameters within the repository.

Documents

• s2e-document
• We also have manuals to construct SILS test environment. Please visit the Google Drive to find the manuals.
  • Sorry, but we only have manuals written in Japanese now. We need help to translate them.

Release style

• We use Semantic Versioning 2.0.0 as the versioning style
  • Basic version format is <major>.<minor>.<patch>(like 4.0.0)
  • Public API is declared in the code itself (currently, there is no definitive list)
• All releases should be tagged as v<semver>(like v4.0.0)

For general users

How to make a project-specific repository

• Please refer s2e-aobc-example repository.
• Users can fork or copy of this example directory.

How to join the development of this repository

• When general users add new features or remove this repository's bugs, please make upstream pull requests from a forked repository.
• Before making PRs, please carefully read the following Development style.
• If you have any questions, please feel free to ask us.

For main developers

How to construct the repository

• git submodule
  • This repository includes s2e-core with the git submodule. Please use the following commands to construct the directory.

    $ git clone git@github.com:ut-issl/s2e-aobc.git
    $ cd s2e-aobc/
    $ git submodule init
    $ git submodule update
    

  • Or use the following commands to clone the repository.

    $ git clone --recursive git@github.com:ut-issl/s2e-aobc.git
    

• External Libraries
  • Users can use s2e-aobc/s2e-core/ExtLibraries/CMakeLists.txt to download the external libraries.
  • Please find how to download the ExtLibraries in the s2e-document.
    • How to build and execute with Visual Studio
    • How to compile with Ubuntu in Docker

Clone Flight S/W repository and build

• Make the FlightSW directory at the same directory with s2e-aobc
• Clone the C2A-AOBC repository into FlightSW
  • Current support version: v8.0.0
• Directory Construction

  - s2e-aobc
  - FlightSW
    - c2a-aobc
  

• You can build s2e-aobc using CMake together with c2a-aobc.

Development style

• Repository settings

  • Branch structure

    - main        # The latest operation guaranteed codes for general users
    - develop     # The latest buildable codes for S2E primary developers
    - feature/*   # Developing codes
    - hotfix/*    # Bug Fix codes
    

  • Push to main and develop is prohibited. All developers have to develop with feature/* or hotfix/* branch and make a pull request.

• Flow of development

  1. Make a feature/* branch from the develop branch.
     • To fix the small bugs in the latest release codes, please make hotfix/* branch from the main branch.
  2. Edit, commit, and push in the branch.
     • Please check the coding convention and the code format in the next section.
  3. Create a new pull request to the develop branch.
     • The target branch becomes the main branch for the hotfix/* branches.
  4. A maintainer reviews the pull request. If some problems are found, the maintainer proposes modifications.
  5. According to the maintainer's proposal, the developer modifies the codes and goes back to 3.
  6. The maintainer merges the feature/* branch with the develop branch.
  7. The code owners decide to merge the develop branch to the main branch and release a new version.

• Binary files

  • Binary file commit is prohibited.
  • Please write the link to such files, or make a script file to get the files.
  • Exception
    • Images for markdown document files are allowable when the file size is smaller than 200K Bytes.

• Code format

  • We use clang-format to format the source code.
  • We recommend installing the clang-format and format code before the commit. It also will be checked on CI.
  • Some modern editor has plugin/extension for code format. It will be very useful.
    • VSCode: C/C++
    • Vim: vim-clang-format

Used Projects

Project Name	Developer	Launch	Refs
SPHERE-1 EYE	Sony Group Corporation and ISSL, UT	2023	Sekine 2023
ONGLAISAT	ISSL, UT	-	Ikari 2022

Brief history of development before GitHub

History

• 21st Apr. 2020: Development started in a private repository at GitLab.
• 26th Sep. 2022: Initial development was finished.
• 03rd Mar. 2023: Move to a private repository at GitHub to prepare to publish as OSS.
• 14th Jul. 2023: Convert to a public repository.

Contributors in the GitLab repository

• ISSL, UT
  • Satoshi Ikari: 158 commits
  • Hirotaka Sekine: 47 commits
  • Toshio Imamura: 42 commits
  • Toshihiro Suzuki: 37 commits
  • Ryo Suzumoto: 20 commits
  • Takayuki Hosonuma: 14 commits
  • Masahiro Fujiwara: 13 commits
  • Nobuhiro Funabiki: 12 commits
  • Ryohei Takahashi: 4 commits
  • Toshifumi Igeta: 2 commits
  • Yoshinari Gyu: 1 commit
  • Keidai Iiyama: 1 commit

Publications

1. S. Ikari, and et al., "Development of Compact and Highly Capable Integrated AOCS Module for CubeSats", Journal of Evolving Space Activities, vol. 1, ID 63, 2023. Link
2. H. Sekine, and et al., "Development of Software-In-the-Loop Simulator and Hardware-In-the-Loop Simulator of AOCS Module for CubeSats", 34th ISTS, Kurume, 2023. Link