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This is the main repository of the CHESS flight software. It uses theNASA F' framework.

ReadF´ Discerning User’s Guide to discover the framework.Tutorials are a very good way to understand it.

More resources (Community Forum, Reference Application, F' Architecture Overview) are available onnasa.github.io/fprime

Follow this guide to start with CHESS FS development :Quick start guide

• Linux based OS (Ubuntu 18.04 viaWSL2 in our case)
• GCC compiler GCC 7.5.0
• CMake 3.5 or newer (3.10.2 used)
• Python 3.5+, PIP and Python Virtual Environment

SeeQuick start guide for details.

F' tools installation

python3 -m venv ./fprime-venv. ./fprime-venv/bin/activatepython3 -m pip install --upgrade wheel setuptools pipcd fprimepython3 -m pip install ./Fw/Python ./Gds

F' compilation

Before compiling, you need to know if the flight sofrware will be used with the FPrime GDS or PUS demonstrator

In ./App/CMakeLists.txt comment and uncomment your choice

add_definitions(-D_PUS)     # to use PUS with GS#add_definitions(-D_GDS)    # to use F' GDS (without PUS)

fprime-util generatefprime-util build

Launch F' and GDS (Ground Software simulator)Prerequisites1. Run ADCS simulator2. Run EPS simulator

fprime-gds

## simulators### ADCS#### Installing```bashpip install python-statemachine

python3 ./simulators/ADCS/TcpMain.py

pip install python-statemachinesudo apt install libsocketcan-dev pkg-config libzmq3-dev

sudo chmod +x ./simulators/EPS/zmqproxysudo ./simulators/EPS/zmqproxy&export LD_LIBRARY_PATH=./simulators/EPS/packages/csp/lib&& python3 ./simulators/EPS/CspMain.py

1. Run ADCS simulator
2. Run EPS simulator

./gs/gs

The demonstrator is a TCP server. It will wait for a connection from Flight software and then, start sending and receiving packets

./App/build-artifacts/Linux/bin/App -a 127.0.0.1 -p 27015

In05_FS/App run

fprime-util check --all

FS can be build and deployed on a Raspberry Pi with

fprime-util generate raspberrypifprime-util build raspberrypi

You will needRaspberry Pi toolchain in/opt/rpi.

Binary generated inApp/bin/arm-linux-gnueabihf/App can be launched on the Pi after having started GDS without application on Linux

fprime-gds -n

SeeGPS tutorial for details.

F' also provide a custom topology RPI to test it on a Raspberry Pi, seehere.

• Jonathan Michel -HES-SO Master student -@jonathanmichel
• Charles-Lewis Jaggi -HES-SO Master student -@lewisjaggi
• Maxime Welcklen -HES-SO Bachelor student -@maximewel