Reverse Engineer Lost Firmware or Rewrite Complete Firmware

[arn-c0de]

Description

The original firmware for the FlightPanel-01 controller is partially lost. The functionality must either be reconstructed through reverse engineering or replaced by a complete new implementation.

The final result must be a clean, maintainable firmware version that fully supports the current hardware configuration.

Tasks

• Analyze existing hardware design and pin mappings
• Attempt to reconstruct original firmware logic if possible
• If reconstruction is not feasible, implement a complete new firmware
• Support all hardware inputs and outputs:
  • Multiplexer inputs
  • Direct buttons
  • Rotary encoder with push button
  • Potentiometers
  • LED outputs
• Implement structured and maintainable source code

Build and Flash Requirements

• Firmware must compile without errors
• Provide a simple build and flash process
• Include a shell script (flash.sh) to compile and upload the firmware
• Compatible with ATmega32U4 bootloader

Testing

• Verify all inputs are detected correctly
• Confirm LED outputs operate as expected
• Validate rotary encoder behavior
• Perform hardware flash test on the board

Deliverables

• Complete firmware source code
• Build instructions
• flash.sh flashing script
• Tested firmware ready for deployment