This is for coordinating our development.

First two bytes contain the command. The next two bytes is the length of the data, then the rest is data.

We have a 16 unsigned integer for commands:

• [0 - 9] CMD_MESSAGE_[0-9] string - Human messages. 0 is lowest priority, 9 is highest.

• 5000 CMD_GPS_DATA struct gps_data - GPS data

• 5500 CMD_THERMOPILE_DATA struct thermopile_data - Thermopile data

• 6000 CMD_STATUS int - Status of flight has changed, one of:
  • 0 - Flight not started
  • 1 - Ascent
  • 2 - Descent
  • 3 - Descent with parachute released
  • 4 - Landed
• 6001 CMD_PARACHUTE - Parachute released if size > 0, else a request to release
• 6003 CMD_CUTDOWN - Glider has been cutdown if size > 0, else a request to release
• 6005 CMD_DESIRED_HEADING double - The desired heading calculated by the flight management.
• 6006 CMD_ALT_DROP_POSITION int - 0 - not in altitude drop, 1-4, position from north clockwise
• 6007 CMD_FINAL_WAYPOINT waypoint_t - The final waypoint, generally the launch point