Here is a list of all documented files with brief descriptions:

n4-flight-software
include
defs.h	Necessary miscellaneous defines for various tasks and functions
state_machine.cpp
state_machine.h
src
data_types.h	Defines the data types, structs and typedefs used to store flight data
kalman_filter.h
logger.cpp	Implement onboard logger class functions
logger.h	This file implements the onboard logging functions for the flight computer We use the SerialFlash library by Paul, link to the library is provided in the references section. If you are using more than one SPI flash memory, create an instance for each SPI flash memory
main.cpp	This contains the main driver code for the flight computer
mpu.h
ring_buffer.cpp
ring_buffer.h
states.h
system_log_levels.h
system_logger.cpp
system_logger.h
wifi-config.h
test
log_time_fmt_test
custom-time.h	This file defeines functions needed for time conversions for data logging
test_class.h