Hamilton Flight Computer Firmware

This repository holds the firmware for the Hamilton Flight Computer (HFC) designed and built by LURA - Leeds University Rocketry Association.

The Hamilton Flight Computer was designed for Gryphon 2 (G2), a high power amateur rocket designed to break the UK student altitude record.

Features:

• STM32 processor
• Sensors
  • ADXL375 - High G Accelerometer
  • BME280 - Humidity Sensor
  • LSM6DS3 - Accelerometer and Gyroscope
  • MAX31855 - Thermocoupler
  • MAXM10S - GNSS Sensor
  • MS5611 - Barometer
  • SI446 - Pad Radio module

Tooling:

hamilton-firmware is:

• Compiled with arm-none-eabi-gcc.
• Debugged with either openocd or probe-rs .
• Flashed with either st-flash or probe-rs.
• Formatted with clang-format.
• Statically analysed with cppcheck (or clang-analyse).

Building and running:

make hfc-flash

Builds the firmware for the HFC v2 board and flashes using probe-rs. Logs will be shown to the current terminal over RTT.

make erase

Builds a specific version of the firmware that erases the NAND flash storage.

make read

Builds a specific version of the firmware that reads the NAND flash storage out to the current terminal.

make check

Runs cppcheck static analyser recursively over all .c and .h files in src/

make format

Runs clang-format recursively over all .c and .h files in src/ using Google formatting standard + longer line widths.

The format for this formatting is defined in .clang-format1

make debug-hardware

Opens openocd with default config for our chip. This allows debugging from your IDE using GDB. To use this with VSCode:

1. Install native debug extension
2. Run make hfc-flash
3. Run make hard-waredebug
4. Click the VSCode "Run and Debug" button to attach the debugger.

Other info

More specific documentation is stored on Athena at https://athena.leedsrocketry.co.uk/doku.php?id=g2:avionics:home

Written by Evan Madurai, Alexandra Posta, Ollie Martin, Tyler Green, and Thomas Groom.