ESP-IDF is used so will need to be installed

• cmake
• esptool
• esp-idf

Install instructions can be found here

If nix is used then there is a provided flake.nix that will handle all dependencies

Run make menuconfig to access to configuration options

make flash will compile and flash the firmware to the ESP32

make monitor will start the monitor to readback any messages from the ESP32

Under "General Settings" there are the options for the web and LoRa configuration.

Under the LoRa section it is possible to modify the settings for

• Sync Word
• Frequency
• Spreading Factor
• Bandwidth
• Coding Rate
• Preamble Length
• Implicit Header
• CRC
• Invert IQ

Under the Web section it is possible to modify the settings for

• SSID
• WiFi Password
• Channel
• Max connections

To modify the ground station to accept other data then it is only necessary to modify config.h and web_files.h

config.h contains the raw struct that is used for decoding the received messages. The contents of this should match what is being sent.

The contents of render_oled represent what will be displayed on the OLED screen.

format_json is used to display the contents on the web server that is hosted

web_files.h represents the UI of the web server. This is a RAWSTRING that should represent some HTML code.

The code that is featured was used for Panthera, but can be modified for other rockets. For those rockets, additional branches should be made to which the changes are commited