// Auto Pilot Modes enumeration
enum autopilot_modes {
STABILIZE = 0, // manual airframe angle with manual throttle
ACRO = 1, // manual body-frame angular rate with manual throttle
ALT_HOLD = 2, // manual airframe angle with automatic throttle
AUTO = 3, // fully automatic waypoint control using mission commands
GUIDED = 4, // fully automatic fly to coordinate or fly at velocity/direction using GCS immediate commands
LOITER = 5, // automatic horizontal acceleration with automatic throttle
RTL = 6, // automatic return to launching point
CIRCLE = 7, // automatic circular flight with automatic throttle
LAND = 9, // automatic landing with horizontal position control
OF_LOITER = 10, // deprecated
DRIFT = 11, // semi-automous position, yaw and throttle control
SPORT = 13, // manual earth-frame angular rate control with manual throttle
FLIP = 14, // automatically flip the vehicle on the roll axis
AUTOTUNE = 15, // automatically tune the vehicle's roll and pitch gains
POSHOLD = 16, // automatic position hold with manual override, with automatic throttle
BRAKE = 17 // full-brake using inertial/GPS system, no pilot input
};