How to Make Checksum in bootloader of Pixhawk ardopilot

  1. The firmware key is checked at every Poer ON. Key mismatch will prevent the system from arming.
    
  2. Result of key matching is stored in the POST log.
  3. Check sum of the code and date part of the firmware is to be calculated. This is called the registered checksum. The checksums are also stored in the bootloader.
  4. Checksums are compared at every Power ON.
  5. Check sum mismatch will prevent the system from arming.
  6. Check sum match is stored in the POST log.