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.

• 10 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
• 11 CMD_GPS_DATA struct gps_data - GPS data
• 12 CMD_THERMOPILE_DATA struct thermopile_data - Thermopile data
• 13 CMD_PARACHUTE - Parachute released
• 14 CMD_PARACHUTE_ACTIVATE - Command sent to release the parachute
• 15 CMD_CUTDOWN - Glider has been cutdown
• 16 CMD_CUTDOWN_ACTIVATE - Command sent to cutdown the glider

• 7000 CMD_DESIRED_HEADING double - The desired heading calculated by the flight management.