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

Read F´ 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 on nasa.github.io/fprime

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

• Linux based OS (Ubuntu 18.04 via WSL2 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

See Quick start guide for details.

F' tools installation

python3 -m venv ./fprime-venv
. ./fprime-venv/bin/activate
python3 -m pip install --upgrade wheel setuptools pip
cd fprime
python3 -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 generate fprime-util build

Launch F' and GDS (Ground Software simulator)

Prerequisites
1. Run ADCS simulator
2. Run EPS simulator

fprime-gds

## simulators
### ADCS
#### Installing
​```bash
pip install python-statemachine

python3 ./simulators/ADCS/TcpMain.py

pip install python-statemachine
sudo apt install libsocketcan-dev pkg-config libzmq3-dev 

sudo chmod +x ./simulators/EPS/zmqproxy
sudo ./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

cd /gs/gs
cmake .
make 
./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

In 05_FS/App run

fprime-util check --all

FS can be build and deployed on a Raspberry Pi with

fprime-util generate raspberrypi
fprime-util build raspberrypi

You will need Raspberry Pi toolchain in /opt/rpi.

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

fprime-gds -n

See GPS tutorial for details.

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

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