Code structure

The firmware consists of the following files/directories:

• code.py - The firmware's entry point.
• welcome.py - Displays the initial "welcome" screen
• apps/ - Contains all the apps that you see in the menu (and the menu itself)
• assets/ - Bitmaps
• drivers/ - drivers for add-ons (e.g. floppy and speaker)
• lib/addons.py - Add-on descriptor library, used by the badge to identify add-ons
• lib/arambadge.py - The hardware abstraction library for the badge
• lib/display.py - Display driver
• lib/eeprom.py - EEPROM driver
• lib/eepromvfs.py - EEPROM filesystem adapter (used by The Floppy add-on)
• lib/si4703.py - FM Radio module driver
• tools - Some useful functions

The lib directory also contains and CircuitPython libraries that we use. They are automatically installed by the circup package manager, according to the list in requirements.txt.