AlchemistPrimus / N2-flight-software

Flight software for N2 Rocket

N2-flight-software

Introduction

This repository contains code used for flight software for Nakuja Rocket N2. The following description provides a detailed description of program flow, project structure, library dependencies and/or any other necessary documentation needed to run this code successfully.

Project structure

---

├───cmake-build-debug
├───include
│   └───defs.h
│   └───functions.h
│   └───global_variables.h
│   └───README.md
├───lib
├───main
│   └───ground-station
          └───ground-station.ino
├───src
   └───main.cpp
└───test

1. Folders Description

Folder	Description
include	Contains header files
lib	Project libraries
main	Contains the code for ground station micro-controller
src	Contains main.cpp file the is run by the flight computer
test	Contains unit test files

2. Files Description

File	Description
defs.h	Contains definitions of global constants
functions.h	Functions declaration and definitions
global_variables,h	Declarations of al global variables used in the program
ground-station.ino	Contains code that runs on the ground station micro-controller
main.cpp	Main program uploaded to the avionics computer. It cantains the flight logic in terms of state machines. The corresponding functions are called depending on the current state of the rocket

Flight Logic

The flight program is structured as a state machine with the following states:

State	Description	Waiting for event
0	Pre-launch	Launch detect
1	In flight	Apogee
2	Apogee	Pyro output time expiration
3	Post apogee	Not used
4	Drogue (Drogue deployed waiting for main parachute)	main parachute altitude
5	main parachute deployed	Not used
6	Post-main (waiting to land)	Zero velocity
7	Ground(Flight is over)	No more events