Protocol documentation

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 bit unsigned integer for commands:

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

• 10 CMD_ERROR int - Error occured

• 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 bool - Parachute released if size > 0, else a request to release
• 6003 CMD_CUTDOWN bool - 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

See configuration files for descriptions and categorisation.

• 10000 CMD_CONFIG_…

to be finished