using System;
using System.Runtime.InteropServices;

namespace Plane.Protocols
{
    //#if MAVLINK10
#if PRIVATE
    public class MAVLink
#else
    internal class MAVLink
#endif
    {
        public const string MAVLINK_BUILD_DATE = "Sun Mar 03 21:09:54 2013";
        public const string MAVLINK_WIRE_PROTOCOL_VERSION = "1.0";
        public const int MAVLINK_MAX_DIALECT_PAYLOAD_SIZE = 25;

        public const int MAVLINK_LITTLE_ENDIAN = 1;
        public const int MAVLINK_BIG_ENDIAN = 0;

        public const byte MAVLINK_STX = 254;

        public const byte MAVLINK_ENDIAN = MAVLINK_LITTLE_ENDIAN;

        public const bool MAVLINK_ALIGNED_FIELDS = (1 == 1);

        public const byte MAVLINK_CRC_EXTRA = 1;

        public const bool MAVLINK_NEED_BYTE_SWAP = (MAVLINK_ENDIAN == MAVLINK_LITTLE_ENDIAN);

        // 林俊清, 20150721: 消息长度表未被使用，而且没更新，删除。
        //public static readonly byte[] MAVLINK_MESSAGE_LENGTHS = new byte[] { 9, 31, 12, 0, 14, 28, 3, 32, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 20, 2, 25, 23, 30, 101, 22, 26, 16, 14, 28, 32, 28, 28, 22, 22, 21, 6, 6, 37, 4, 4, 2, 2, 4, 2, 2, 3, 13, 12, 19, 17, 15, 15, 27, 25, 18, 18, 20, 20, 9, 34, 26, 46, 36, 0, 6, 4, 0, 11, 18, 0, 0, 0, 20, 0, 33, 3, 0, 0, 20, 22, 0, 0, 0, 0, 0, 0, 0, 28, 56, 42, 33, 0, 0, 0, 0, 0, 0, 0, 26, 32, 32, 20, 32, 62, 54, 64, 84, 9, 254, 249, 9, 36, 26, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 33, 25, 42, 8, 4, 12, 15, 13, 6, 15, 14, 0, 12, 3, 8, 28, 44, 3, 9, 22, 12, 18, 34, 66, 98, 8, 48, 19, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 30, 18, 18, 51, 9, 0 };

        public static readonly byte[] MAVLINK_MESSAGE_CRCS = new byte[] { 50, 124, 137, 0, 237, 217, 104, 119, 0, 0, 0, 89, 0, 0, 0, 0, 0, 0, 0, 0, 214, 159, 220, 168, 24, 23, 170, 144, 67, 115, 39, 246, 185, 104, 237, 244, 222, 212, 9, 254, 230, 28, 28, 132, 221, 232, 11, 153, 41, 39, 214, 223, 141, 33, 15, 3, 100, 24, 239, 238, 30, 240, 183, 130, 130, 118, 148, 21, 0, 243, 124, 0, 0, 0, 20, 0, 152, 143, 0, 0, 127, 106, 0, 0, 0, 0, 0, 0, 0, 231, 183, 63, 54, 0, 0, 0, 0, 0, 0, 0, 175, 102, 158, 208, 56, 93, 211, 108, 32, 185, 235, 93, 124, 124, 119, 4, 76, 128, 56, 116, 134, 237, 203, 250, 87, 203, 220, 0, 0, 0, 29, 223, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 177, 241, 15, 134, 219, 208, 188, 84, 22, 19, 21, 134, 0, 78, 68, 189, 127, 154, 21, 21, 144, 1, 234, 73, 181, 22, 83, 167, 138, 234, 240, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 59, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 204, 49, 170, 44, 83, 46, 0 };

        public static Type[] MAVLINK_MESSAGE_INFO = new Type[] { typeof(mavlink_heartbeat_t), typeof(mavlink_sys_status_t), typeof(mavlink_system_time_t), null, typeof(mavlink_ping_t), typeof(mavlink_change_operator_control_t), typeof(mavlink_change_operator_control_ack_t), typeof(mavlink_auth_key_t), null, null, null, typeof(mavlink_set_mode_t), null, null, null, null, null, null, null, null, typeof(mavlink_param_request_read_t), typeof(mavlink_param_request_list_t), typeof(mavlink_param_value_t), typeof(mavlink_param_set_t), typeof(mavlink_gps_raw_int_t), typeof(mavlink_gps_status_t), typeof(mavlink_scaled_imu_t), typeof(mavlink_raw_imu_t), typeof(mavlink_raw_pressure_t), typeof(mavlink_scaled_pressure_t), typeof(mavlink_attitude_t), typeof(mavlink_attitude_quaternion_t), typeof(mavlink_local_position_ned_t), typeof(mavlink_global_position_int_t), typeof(mavlink_rc_channels_scaled_t), typeof(mavlink_rc_channels_raw_t), typeof(mavlink_servo_output_raw_t), typeof(mavlink_mission_request_partial_list_t), typeof(mavlink_mission_write_partial_list_t), typeof(mavlink_mission_item_t), typeof(mavlink_mission_request_t), typeof(mavlink_mission_set_current_t), typeof(mavlink_mission_current_t), typeof(mavlink_mission_request_list_t), typeof(mavlink_mission_count_t), typeof(mavlink_mission_clear_all_t), typeof(mavlink_mission_item_reached_t), typeof(mavlink_mission_ack_t), typeof(mavlink_set_gps_global_origin_t), typeof(mavlink_gps_global_origin_t), typeof(mavlink_set_local_position_setpoint_t), typeof(mavlink_local_position_setpoint_t), typeof(mavlink_global_position_setpoint_int_t), typeof(mavlink_set_global_position_setpoint_int_t), typeof(mavlink_safety_set_allowed_area_t), typeof(mavlink_safety_allowed_area_t), typeof(mavlink_set_roll_pitch_yaw_thrust_t), typeof(mavlink_set_roll_pitch_yaw_speed_thrust_t), typeof(mavlink_roll_pitch_yaw_thrust_setpoint_t), typeof(mavlink_roll_pitch_yaw_speed_thrust_setpoint_t), typeof(mavlink_set_quad_motors_setpoint_t), typeof(mavlink_set_quad_swarm_roll_pitch_yaw_thrust_t), typeof(mavlink_nav_controller_output_t), typeof(mavlink_set_quad_swarm_led_roll_pitch_yaw_thrust_t), typeof(mavlink_state_correction_t), null, typeof(mavlink_request_data_stream_t), typeof(mavlink_data_stream_t), null, typeof(mavlink_manual_control_t), typeof(mavlink_rc_channels_override_t), null, null, null, typeof(mavlink_vfr_hud_t), null, typeof(mavlink_command_long_t), typeof(mavlink_command_ack_t), null, null, typeof(mavlink_roll_pitch_yaw_rates_thrust_setpoint_t), typeof(mavlink_manual_setpoint_t), null, null, null, null, null, null, null, typeof(mavlink_local_position_ned_system_global_offset_t), typeof(mavlink_hil_state_t), typeof(mavlink_hil_controls_t), typeof(mavlink_hil_rc_inputs_raw_t), null, null, null, null, null, null, null, typeof(mavlink_optical_flow_t), typeof(mavlink_global_vision_position_estimate_t), typeof(mavlink_vision_position_estimate_t), typeof(mavlink_vision_speed_estimate_t), typeof(mavlink_vicon_position_estimate_t), typeof(mavlink_highres_imu_t), null, null, null, null, typeof(mavlink_file_transfer_start_t), typeof(mavlink_file_transfer_dir_list_t), typeof(mavlink_file_transfer_res_t), null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, typeof(mavlink_battery_status_t), typeof(mavlink_setpoint_8dof_t), typeof(mavlink_setpoint_6dof_t), typeof(mavlink_sensor_offsets_t), typeof(mavlink_set_mag_offsets_t), typeof(mavlink_meminfo_t), typeof(mavlink_ap_adc_t), typeof(mavlink_digicam_configure_t), typeof(mavlink_digicam_control_t), typeof(mavlink_mount_configure_t), typeof(mavlink_mount_control_t), typeof(mavlink_mount_status_t), null, typeof(mavlink_fence_point_t), typeof(mavlink_fence_fetch_point_t), typeof(mavlink_fence_status_t), typeof(mavlink_ahrs_t), typeof(mavlink_simstate_t), typeof(mavlink_hwstatus_t), typeof(mavlink_radio_t), typeof(mavlink_limits_status_t), typeof(mavlink_wind_t), typeof(mavlink_data16_t), typeof(mavlink_data32_t), typeof(mavlink_data64_t), typeof(mavlink_data96_t), typeof(mavlink_rangefinder_t), null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, typeof(mavlink_rc_mobile_control_t), typeof(mavlink_set_pair_t), null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, typeof(mavlink_memory_vect_t), typeof(mavlink_debug_vect_t), typeof(mavlink_named_value_float_t), typeof(mavlink_named_value_int_t), typeof(mavlink_statustext_t), typeof(mavlink_debug_t), null };

        public const byte MAVLINK_VERSION = 2;


        /** @brief Enumeration of possible mount operation modes */
        public enum MAV_MOUNT_MODE
        {
            ///<summary> Load and keep safe position (Roll,Pitch,Yaw) from EEPROM and stop stabilization | </summary>
            RETRACT = 0,
            ///<summary> Load and keep neutral position (Roll,Pitch,Yaw) from EEPROM. | </summary>
            NEUTRAL = 1,
            ///<summary> Load neutral position and start MAVLink Roll,Pitch,Yaw control with stabilization | </summary>
            MAVLINK_TARGETING = 2,
            ///<summary> Load neutral position and start RC Roll,Pitch,Yaw control with stabilization | </summary>
            RC_TARGETING = 3,
            ///<summary> Load neutral position and start to point to Lat,Lon,Alt | </summary>
            GPS_POINT = 4,
            ///<summary>  | </summary>
            ENUM_END = 5,

        };

        ///<summary>  </summary>
        public enum MAV_CMD
        {
            ///<summary> Navigate to MISSION. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Acceptance radius in meters (if the sphere with this radius is hit, the MISSION counts as reached)| 0 to pass through the WP, if > 0 radius in meters to pass by WP. Positive value for clockwise orbit, negative value for counter-clockwise orbit. Allows trajectory control.| Desired yaw angle at MISSION (rotary wing)| Latitude| Longitude| Altitude|  </summary>
            WAYPOINT = 16,
            ///<summary> Loiter around this MISSION an unlimited amount of time |Empty| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Desired yaw angle.| Latitude| Longitude| Altitude|  </summary>
            LOITER_UNLIM = 17,
            ///<summary> Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Desired yaw angle.| Latitude| Longitude| Altitude|  </summary>
            LOITER_TURNS = 18,
            ///<summary> Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Desired yaw angle.| Latitude| Longitude| Altitude|  </summary>
            LOITER_TIME = 19,
            ///<summary> Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            RETURN_TO_LAUNCH = 20,
            ///<summary> Land at location |Empty| Empty| Empty| Desired yaw angle.| Latitude| Longitude| Altitude|  </summary>
            LAND = 21,
            ///<summary> Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer| Latitude| Longitude| Altitude|  </summary>
            TAKEOFF = 22,
            /// <summary>
            /// // 林俊清, 20160331, 来自郭老师，据说是传文件用的。
            /// </summary>
            TELL_COPTER = 23,
            /// <summary>
            /// // 林俊清, 20160331, 来自郭老师的邮件，作用未知。
            /// </summary>
            FILE_TRANS_MODE = 24,
            /// <summary>
            /// // 林俊清, 20160331, 来自郭老师的邮件，用于 RF 测试。
            /// </summary>
            RF_TEST = 25,
            ///<summary> Sets the region of interest (ROI) for a sensor set or the vehicle itself. This can then be used by the vehicles control system to control the vehicle attitude and the attitude of various sensors such as cameras. |Region of intereset mode. (see MAV_ROI enum)| MISSION index/ target ID. (see MAV_ROI enum)| ROI index (allows a vehicle to manage multiple ROI's)| Empty| x the location of the fixed ROI (see MAV_FRAME)| y| z|  </summary>
            ROI = 80,
            ///<summary> Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  </summary>
            PATHPLANNING = 81,
            ///<summary> Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  </summary>
            SPLINE_WAYPOINT = 82,
            ///<summary> Pass control to an external controller. |Timeout in seconds.  The maximum amount of time that the external controller will be allowed to control the vehicle.  0 means no timeout| Altitude min. If vehicle moves below this altitude the command will be aborted and the mission will continue.  0 for no lower alt limit| Altitude max. If vehicle moves above this altitude the command will be aborted and the mission will continue.  0 for no upper alt limit| Horizontal move limit. If vehicle moves more than this distance from it's location at the moment the command was begun, the command will be aborted and the mission will continue.  0 for no horizontal movement limit| Empty| Empty| Empty|  </summary>
            GUIDED = 90,
            ///<summary> Navigate at the specified velocity |coordinate_frame - see MAV_FRAME enum| Empty| Empty| Empty| x velocity| y velocity| z velocity|  </summary>
            VELOCITY = 91,
            ///<summary> NOP - This command is only used to mark the upper limit of the NAV/ACTION commands in the enumeration |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            LAST = 95,
            ///<summary> Delay mission state machine. |Delay in seconds (decimal)| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            CONDITION_DELAY = 112,
            ///<summary> Ascend/descend at rate.  Delay mission state machine until desired altitude reached. |Descent / Ascend rate (m/s)| Empty| Empty| Empty| Empty| Empty| Finish Altitude|  </summary>
            CONDITION_CHANGE_ALT = 113,
            ///<summary> Delay mission state machine until within desired distance of next NAV point. |Distance (meters)| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            CONDITION_DISTANCE = 114,
            ///<summary> Reach a certain target angle. |target angle: [0-360], 0 is north| speed during yaw change:[deg per second]| direction: negative: counter clockwise, positive: clockwise [-1,1]| relative offset or absolute angle: [ 1,0]| Empty| Empty| Empty|  </summary>
            CONDITION_YAW = 115,
            ///<summary> NOP - This command is only used to mark the upper limit of the CONDITION commands in the enumeration |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            CONDITION_LAST = 159,
            ///<summary> Set system mode. |Mode, as defined by ENUM MAV_MODE| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_SET_MODE = 176,
            ///<summary> Jump to the desired command in the mission list.  Repeat this action only the specified number of times |Sequence number| Repeat count| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_JUMP = 177,
            ///<summary> Change speed and/or throttle set points. |Speed type (0=Airspeed, 1=Ground Speed)| Speed  (m/s, -1 indicates no change)| Throttle  ( Percent, -1 indicates no change)| Empty| Empty| Empty| Empty|  </summary>
            DO_CHANGE_SPEED = 178,
            ///<summary> Changes the home location either to the current location or a specified location. |Use current (1=use current location, 0=use specified location)| Empty| Empty| Empty| Latitude| Longitude| Altitude|  </summary>
            DO_SET_HOME = 179,
            ///<summary> Set a system parameter.  Caution!  Use of this command requires knowledge of the numeric enumeration value of the parameter. |Parameter number| Parameter value| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_SET_PARAMETER = 180,
            ///<summary> Set a relay to a condition. |Relay number| Setting (1=on, 0=off, others possible depending on system hardware)| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_SET_RELAY = 181,
            ///<summary> Cycle a relay on and off for a desired number of cyles with a desired period. |Relay number| Cycle count| Cycle time (seconds, decimal)| Empty| Empty| Empty| Empty|  </summary>
            DO_REPEAT_RELAY = 182,
            ///<summary> Set a servo to a desired PWM value. |Servo number| PWM (microseconds, 1000 to 2000 typical)| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_SET_SERVO = 183,
            ///<summary> Cycle a between its nominal setting and a desired PWM for a desired number of cycles with a desired period. |Servo number| PWM (microseconds, 1000 to 2000 typical)| Cycle count| Cycle time (seconds)| Empty| Empty| Empty|  </summary>
            DO_REPEAT_SERVO = 184,
            ///<summary> Control onboard camera system. |Camera ID (-1 for all)| Transmission: 0: disabled, 1: enabled compressed, 2: enabled raw| Transmission mode: 0: video stream, >0: single images every n seconds (decimal)| Recording: 0: disabled, 1: enabled compressed, 2: enabled raw| Empty| Empty| Empty|  </summary>
            DO_CONTROL_VIDEO = 200,
            ///<summary> Sets the region of interest (ROI) for a sensor set or the vehicle itself. This can then be used by the vehicles control system to control the vehicle attitude and the attitude of various sensors such as cameras. |Region of intereset mode. (see MAV_ROI enum)| MISSION index/ target ID. (see MAV_ROI enum)| ROI index (allows a vehicle to manage multiple ROI's)| Empty| x the location of the fixed ROI (see MAV_FRAME)| y| z|  </summary>
            DO_SET_ROI = 201,
            ///<summary> Mission command to configure an on-board camera controller system. |Modes: P, TV, AV, M, Etc| Shutter speed: Divisor number for one second| Aperture: F stop number| ISO number e.g. 80, 100, 200, Etc| Exposure type enumerator| Command Identity| Main engine cut-off time before camera trigger in seconds/10 (0 means no cut-off)|  </summary>
            DO_DIGICAM_CONFIGURE = 202,
            ///<summary> Mission command to control an on-board camera controller system. |Session control e.g. show/hide lens| Zoom's absolute position| Zooming step value to offset zoom from the current position| Focus Locking, Unlocking or Re-locking| Shooting Command| Command Identity| Empty|  </summary>
            DO_DIGICAM_CONTROL = 203,
            ///<summary> Mission command to configure a camera or antenna mount |Mount operation mode (see MAV_MOUNT_MODE enum)| stabilize roll? (1 = yes, 0 = no)| stabilize pitch? (1 = yes, 0 = no)| stabilize yaw? (1 = yes, 0 = no)| Empty| Empty| Empty|  </summary>
            DO_MOUNT_CONFIGURE = 204,
            ///<summary> Mission command to control a camera or antenna mount |pitch or lat in degrees, depending on mount mode.| roll or lon in degrees depending on mount mode| yaw or alt (in meters) depending on mount mode| reserved| reserved| reserved| MAV_MOUNT_MODE enum value|  </summary>
            DO_MOUNT_CONTROL = 205,
            ///<summary> Mission command to set CAM_TRIGG_DIST for this flight |Camera trigger distance (meters)| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_SET_CAM_TRIGG_DIST = 206,
            ///<summary> Mission command to enable the geofence |enable? (0=disable, 1=enable)| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_FENCE_ENABLE = 207,
            ///<summary> Mission command to trigger a parachute |action (0=disable, 1=enable, 2=release, for some systems see PARACHUTE_ACTION enum, not in general message set.)| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_PARACHUTE = 208,
            ///<summary> Mission command to perform motor test |motor sequence number (a number from 1 to max number of motors on the vehicle)| throttle type (0=throttle percentage, 1=PWM, 2=pilot throttle channel pass-through. See MOTOR_TEST_THROTTLE_TYPE enum)| throttle| timeout (in seconds)| Empty| Empty| Empty|  </summary>
            DO_MOTOR_TEST = 209,
            ///<summary> Change to/from inverted flight |inverted (0=normal, 1=inverted)| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_INVERTED_FLIGHT = 210,
            ///<summary> Mission command to control a camera or antenna mount, using a quaternion as reference. |q1 - quaternion param #1| q2 - quaternion param #2| q3 - quaternion param #3| q4 - quaternion param #4| Empty| Empty| Empty|  </summary>
            DO_MOUNT_CONTROL_QUAT = 220,
            ///<summary> NOP - This command is only used to mark the upper limit of the DO commands in the enumeration |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  </summary>
            DO_LAST = 240,
            ///<summary> Trigger calibration. This command will be only accepted if in pre-flight mode. |Gyro calibration: 0: no, 1: yes| Magnetometer calibration: 0: no, 1: yes| Ground pressure: 0: no, 1: yes| Radio calibration: 0: no, 1: yes| Accelerometer calibration: 0: no, 1: yes| Compass/Motor interference calibration: 0: no, 1: yes| Empty|  </summary>
            PREFLIGHT_CALIBRATION = 241,
            ///<summary> Set sensor offsets. This command will be only accepted if in pre-flight mode. |Sensor to adjust the offsets for: 0: gyros, 1: accelerometer, 2: magnetometer, 3: barometer, 4: optical flow| X axis offset (or generic dimension 1), in the sensor's raw units| Y axis offset (or generic dimension 2), in the sensor's raw units| Z axis offset (or generic dimension 3), in the sensor's raw units| Generic dimension 4, in the sensor's raw units| Generic dimension 5, in the sensor's raw units| Generic dimension 6, in the sensor's raw units|  </summary>
            PREFLIGHT_SET_SENSOR_OFFSETS = 242,
            ///<summary> Request storage of different parameter values and logs. This command will be only accepted if in pre-flight mode. |Parameter storage: 0: READ FROM FLASH/EEPROM, 1: WRITE CURRENT TO FLASH/EEPROM| Mission storage: 0: READ FROM FLASH/EEPROM, 1: WRITE CURRENT TO FLASH/EEPROM| Reserved| Reserved| Empty| Empty| Empty|  </summary>
            PREFLIGHT_STORAGE = 245,
            ///<summary> Request the reboot or shutdown of system components. |0: Do nothing for autopilot, 1: Reboot autopilot, 2: Shutdown autopilot.| 0: Do nothing for onboard computer, 1: Reboot onboard computer, 2: Shutdown onboard computer.| Reserved| Reserved| Empty| Empty| Empty|  </summary>
            PREFLIGHT_REBOOT_SHUTDOWN = 246,
            ///<summary> Hold / continue the current action |MAV_GOTO_DO_HOLD: hold MAV_GOTO_DO_CONTINUE: continue with next item in mission plan| MAV_GOTO_HOLD_AT_CURRENT_POSITION: Hold at current position MAV_GOTO_HOLD_AT_SPECIFIED_POSITION: hold at specified position| MAV_FRAME coordinate frame of hold point| Desired yaw angle in degrees| Latitude / X position| Longitude / Y position| Altitude / Z position|  </summary>
            OVERRIDE_GOTO = 252,
            ///<summary> start running a mission |first_item: the first mission item to run| last_item:  the last mission item to run (after this item is run, the mission ends)|  </summary>
            MISSION_START = 300,
            ///<summary> Arms / Disarms a component |1 to arm, 0 to disarm|  </summary>
            COMPONENT_ARM_DISARM = 400,
            ///<summary> Starts receiver pairing |0:Spektrum| 0:Spektrum DSM2, 1:Spektrum DSMX|  </summary>
            START_RX_PAIR = 500,
            ///<summary>  | </summary>
            ENUM_END = 501,
        };

        /** @brief  */
        public enum FENCE_ACTION
        {
            ///<summary> Disable fenced mode | </summary>
            NONE = 0,
            ///<summary> Switched to guided mode to return point (fence point 0) | </summary>
            GUIDED = 1,
            ///<summary> Report fence breach, but don't take action | </summary>
            REPORT = 2,
            ///<summary>  | </summary>
            ENUM_END = 3,

        };

        /** @brief  */
        public enum FENCE_BREACH
        {
            ///<summary> No last fence breach | </summary>
            NONE = 0,
            ///<summary> Breached minimum altitude | </summary>
            MINALT = 1,
            ///<summary> Breached minimum altitude | </summary>
            MAXALT = 2,
            ///<summary> Breached fence boundary | </summary>
            BOUNDARY = 3,
            ///<summary>  | </summary>
            ENUM_END = 4,

        };

        /** @brief  */
        public enum LIMITS_STATE
        {
            ///<summary>  pre-initialization | </summary>
            LIMITS_INIT = 0,
            ///<summary>  disabled | </summary>
            LIMITS_DISABLED = 1,
            ///<summary>  checking limits | </summary>
            LIMITS_ENABLED = 2,
            ///<summary>  a limit has been breached | </summary>
            LIMITS_TRIGGERED = 3,
            ///<summary>  taking action eg. RTL | </summary>
            LIMITS_RECOVERING = 4,
            ///<summary>  we're no longer in breach of a limit | </summary>
            LIMITS_RECOVERED = 5,
            ///<summary>  | </summary>
            ENUM_END = 6,

        };

        /** @brief  */
        public enum LIMIT_MODULE
        {
            ///<summary>  pre-initialization | </summary>
            LIMIT_GPSLOCK = 1,
            ///<summary>  disabled | </summary>
            LIMIT_GEOFENCE = 2,
            ///<summary>  checking limits | </summary>
            LIMIT_ALTITUDE = 4,
            ///<summary>  | </summary>
            ENUM_END = 5,

        };

        ///<summary>  </summary>
        public enum MOTOR_TEST_THROTTLE_TYPE
        {
            ///<summary> throttle as a percentage from 0 ~ 100 | </summary>
            MOTOR_TEST_THROTTLE_PERCENT = 0,
            ///<summary> throttle as an absolute PWM value (normally in range of 1000~2000) | </summary>
            MOTOR_TEST_THROTTLE_PWM = 1,
            ///<summary> throttle pass-through from pilot's transmitter | </summary>
            MOTOR_TEST_THROTTLE_PILOT = 2,
            ///<summary>  | </summary>
            ENUM_END = 3,

        };

        /** @brief Micro air vehicle / autopilot classes. This identifies the individual model. */
        public enum MAV_AUTOPILOT
        {
            ///<summary> Generic autopilot, full support for everything | </summary>
            GENERIC = 0,
            ///<summary> PIXHAWK autopilot, http://pixhawk.ethz.ch | </summary>
            PIXHAWK = 1,
            ///<summary> SLUGS autopilot, http://slugsuav.soe.ucsc.edu | </summary>
            SLUGS = 2,
            ///<summary> ArduPilotMega / ArduCopter, http://diydrones.com | </summary>
            PlanePILOT = 3,
            ///<summary> OpenPilot, http://openpilot.org | </summary>
            OPENPILOT = 4,
            ///<summary> Generic autopilot only supporting simple waypoints | </summary>
            GENERIC_WAYPOINTS_ONLY = 5,
            ///<summary> Generic autopilot supporting waypoints and other simple navigation commands | </summary>
            GENERIC_WAYPOINTS_AND_SIMPLE_NAVIGATION_ONLY = 6,
            ///<summary> Generic autopilot supporting the full mission command set | </summary>
            GENERIC_MISSION_FULL = 7,
            ///<summary> No valid autopilot, e.g. a GCS or other MAVLink component | </summary>
            INVALID = 8,
            ///<summary> PPZ UAV - http://nongnu.org/paparazzi | </summary>
            PPZ = 9,
            ///<summary> UAV Dev Board | </summary>
            UDB = 10,
            ///<summary> FlexiPilot | </summary>
            FP = 11,
            ///<summary> PX4 Autopilot - http://pixhawk.ethz.ch/px4/ | </summary>
            PX4 = 12,
            ///<summary>  | </summary>
            ENUM_END = 13,

        };

        /** @brief  */
        public enum MAV_TYPE
        {
            ///<summary> Generic micro air vehicle. | </summary>
            GENERIC = 0,
            ///<summary> Fixed wing aircraft. | </summary>
            FIXED_WING = 1,
            ///<summary> Quadrotor | </summary>
            QUADROTOR = 2,
            ///<summary> Coaxial helicopter | </summary>
            COAXIAL = 3,
            ///<summary> Normal helicopter with tail rotor. | </summary>
            HELICOPTER = 4,
            ///<summary> Ground installation | </summary>
            ANTENNA_TRACKER = 5,
            ///<summary> Operator control unit / ground control station | </summary>
            GCS = 6,
            ///<summary> Airship, controlled | </summary>
            AIRSHIP = 7,
            ///<summary> Free balloon, uncontrolled | </summary>
            FREE_BALLOON = 8,
            ///<summary> Rocket | </summary>
            ROCKET = 9,
            ///<summary> Ground rover | </summary>
            GROUND_ROVER = 10,
            ///<summary> Surface vessel, boat, ship | </summary>
            SURFACE_BOAT = 11,
            ///<summary> Submarine | </summary>
            SUBMARINE = 12,
            ///<summary> Hexarotor | </summary>
            HEXAROTOR = 13,
            ///<summary> Octorotor | </summary>
            OCTOROTOR = 14,
            ///<summary> Octorotor | </summary>
            TRICOPTER = 15,
            ///<summary> Flapping wing | </summary>
            FLAPPING_WING = 16,
            ///<summary> Flapping wing | </summary>
            KITE = 17,
            ///<summary>  | </summary>
            ENUM_END = 18,

        };

        /** @brief These flags encode the MAV mode. */
        public enum MAV_MODE_FLAG
        {
            ///<summary> 0b00000001 Reserved for future use. | </summary>
            CUSTOM_MODE_ENABLED = 1,
            ///<summary> 0b00000010 system has a test mode enabled. This flag is intended for temporary system tests and should not be used for stable implementations. | </summary>
            TEST_ENABLED = 2,
            ///<summary> 0b00000100 autonomous mode enabled, system finds its own goal positions. Guided flag can be set or not, depends on the actual implementation. | </summary>
            AUTO_ENABLED = 4,
            ///<summary> 0b00001000 guided mode enabled, system flies MISSIONs / mission items. | </summary>
            GUIDED_ENABLED = 8,
            ///<summary> 0b00010000 system stabilizes electronically its attitude (and optionally position). It needs however further control inputs to move around. | </summary>
            STABILIZE_ENABLED = 16,
            ///<summary> 0b00100000 hardware in the loop simulation. All motors / actuators are blocked, but public software is full operational. | </summary>
            HIL_ENABLED = 32,
            ///<summary> 0b01000000 remote control input is enabled. | </summary>
            MANUAL_INPUT_ENABLED = 64,
            ///<summary> 0b10000000 MAV safety set to armed. Motors are enabled / running / can start. Ready to fly. | </summary>
            SAFETY_ARMED = 128,
            ///<summary>  | </summary>
            ENUM_END = 129,

        };

        /** @brief These values encode the bit positions of the decode position. These values can be used to read the value of a flag bit by combining the base_mode variable with AND with the flag position value. The result will be either 0 or 1, depending on if the flag is set or not. */
        public enum MAV_MODE_FLAG_DECODE_POSITION
        {
            ///<summary> Eighth bit: 00000001 | </summary>
            CUSTOM_MODE = 1,
            ///<summary> Seventh bit: 00000010 | </summary>
            TEST = 2,
            ///<summary> Sixt bit:   00000100 | </summary>
            AUTO = 4,
            ///<summary> Fifth bit:  00001000 | </summary>
            GUIDED = 8,
            ///<summary> Fourth bit: 00010000 | </summary>
            STABILIZE = 16,
            ///<summary> Third bit:  00100000 | </summary>
            HIL = 32,
            ///<summary> Second bit: 01000000 | </summary>
            MANUAL = 64,
            ///<summary> First bit:  10000000 | </summary>
            SAFETY = 128,
            ///<summary>  | </summary>
            ENUM_END = 129,

        };

        /** @brief Override command, pauses current mission execution and moves immediately to a position */
        public enum MAV_GOTO
        {
            ///<summary> Hold at the current position. | </summary>
            DO_HOLD = 0,
            ///<summary> Continue with the next item in mission execution. | </summary>
            DO_CONTINUE = 1,
            ///<summary> Hold at the current position of the system | </summary>
            HOLD_AT_CURRENT_POSITION = 2,
            ///<summary> Hold at the position specified in the parameters of the DO_HOLD action | </summary>
            HOLD_AT_SPECIFIED_POSITION = 3,
            ///<summary>  | </summary>
            ENUM_END = 4,

        };

        /** @brief These defines are predefined OR-combined mode flags. There is no need to use values from this enum, but it                simplifies the use of the mode flags. Note that manual input is enabled in all modes as a safety override. */
        public enum MAV_MODE
        {
            ///<summary> System is not ready to fly, booting, calibrating, etc. No flag is set. | </summary>
            PREFLIGHT = 0,
            ///<summary> System is allowed to be active, under manual (RC) control, no stabilization | </summary>
            MANUAL_DISARMED = 64,
            ///<summary> UNDEFINED mode. This solely depends on the autopilot - use with caution, intended for developers only. | </summary>
            TEST_DISARMED = 66,
            ///<summary> System is allowed to be active, under assisted RC control. | </summary>
            STABILIZE_DISARMED = 80,
            ///<summary> System is allowed to be active, under autonomous control, manual setpoint | </summary>
            GUIDED_DISARMED = 88,
            ///<summary> System is allowed to be active, under autonomous control and navigation (the trajectory is decided onboard and not pre-programmed by MISSIONs) | </summary>
            AUTO_DISARMED = 92,
            ///<summary> System is allowed to be active, under manual (RC) control, no stabilization | </summary>
            MANUAL_ARMED = 192,
            ///<summary> UNDEFINED mode. This solely depends on the autopilot - use with caution, intended for developers only. | </summary>
            TEST_ARMED = 194,
            ///<summary> System is allowed to be active, under assisted RC control. | </summary>
            STABILIZE_ARMED = 208,
            ///<summary> System is allowed to be active, under autonomous control, manual setpoint | </summary>
            GUIDED_ARMED = 216,
            ///<summary> System is allowed to be active, under autonomous control and navigation (the trajectory is decided onboard and not pre-programmed by MISSIONs) | </summary>
            AUTO_ARMED = 220,
            ///<summary>  | </summary>
            ENUM_END = 221,

        };

        /** @brief  */
        public enum MAV_STATE
        {
            ///<summary> Uninitialized system, state is unknown. | </summary>
            UNINIT = 0,
            ///<summary> System is booting up. | </summary>
            BOOT = 1,
            ///<summary> System is calibrating and not flight-ready. | </summary>
            CALIBRATING = 2,
            ///<summary> System is grounded and on standby. It can be launched any time. | </summary>
            STANDBY = 3,
            ///<summary> System is active and might be already airborne. Motors are engaged. | </summary>
            ACTIVE = 4,
            ///<summary> System is in a non-normal flight mode. It can however still navigate. | </summary>
            CRITICAL = 5,
            ///<summary> System is in a non-normal flight mode. It lost control over parts or over the whole airframe. It is in mayday and going down. | </summary>
            EMERGENCY = 6,
            ///<summary> System just initialized its power-down sequence, will shut down now. | </summary>
            POWEROFF = 7,
            ///<summary>  | </summary>
            ENUM_END = 8,

        };

        /** @brief  */
        public enum MAV_COMPONENT
        {
            ///<summary>  | </summary>
            MAV_COMP_ID_ALL = 0,
            ///<summary>  | </summary>
            MAV_COMP_ID_CAMERA = 100,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO1 = 140,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO2 = 141,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO3 = 142,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO4 = 143,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO5 = 144,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO6 = 145,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO7 = 146,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO8 = 147,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO9 = 148,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO10 = 149,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO11 = 150,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO12 = 151,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO13 = 152,
            ///<summary>  | </summary>
            MAV_COMP_ID_SERVO14 = 153,
            ///<summary>  | </summary>
            MAV_COMP_ID_MAPPER = 180,
            ///<summary>  | </summary>
            MAV_COMP_ID_MISSIONPLANNER = 190,
            ///<summary>  | </summary>
            MAV_COMP_ID_PATHPLANNER = 195,
            ///<summary>  | </summary>
            MAV_COMP_ID_IMU = 200,
            ///<summary>  | </summary>
            MAV_COMP_ID_IMU_2 = 201,
            ///<summary>  | </summary>
            MAV_COMP_ID_IMU_3 = 202,
            ///<summary>  | </summary>
            MAV_COMP_ID_GPS = 220,
            ///<summary>  | </summary>
            MAV_COMP_ID_UDP_BRIDGE = 240,
            ///<summary>  | </summary>
            MAV_COMP_ID_UART_BRIDGE = 241,
            ///<summary>  | </summary>
            MAV_COMP_ID_SYSTEM_CONTROL = 250,
            ///<summary>  | </summary>
            ENUM_END = 251,

        };

        /** @brief  */
        public enum MAV_FRAME
        {
            ///<summary> Global coordinate frame, WGS84 coordinate system. First value / x: latitude, second value / y: longitude, third value / z: positive altitude over mean sea level (MSL) | </summary>
            GLOBAL = 0,
            ///<summary> Local coordinate frame, Z-up (x: north, y: east, z: down). | </summary>
            LOCAL_NED = 1,
            ///<summary> NOT a coordinate frame, indicates a mission command. | </summary>
            MISSION = 2,
            ///<summary> Global coordinate frame, WGS84 coordinate system, relative altitude over ground with respect to the home position. First value / x: latitude, second value / y: longitude, third value / z: positive altitude with 0 being at the altitude of the home location. | </summary>
            GLOBAL_RELATIVE_ALT = 3,
            ///<summary> Local coordinate frame, Z-down (x: east, y: north, z: up) | </summary>
            LOCAL_ENU = 4,
            ///<summary>  | </summary>
            ENUM_END = 5,

        };

        /** @brief  */
        public enum MAVLINK_DATA_STREAM_TYPE
        {
            ///<summary>  | </summary>
            MAVLINK_DATA_STREAM_IMG_JPEG = 1,
            ///<summary>  | </summary>
            MAVLINK_DATA_STREAM_IMG_BMP = 2,
            ///<summary>  | </summary>
            MAVLINK_DATA_STREAM_IMG_RAW8U = 3,
            ///<summary>  | </summary>
            MAVLINK_DATA_STREAM_IMG_RAW32U = 4,
            ///<summary>  | </summary>
            MAVLINK_DATA_STREAM_IMG_PGM = 5,
            ///<summary>  | </summary>
            MAVLINK_DATA_STREAM_IMG_PNG = 6,
            ///<summary>  | </summary>
            ENUM_END = 7,

        };

        /** @brief Data stream IDs. A data stream is not a fixed set of messages, but rather a      recommendation to the autopilot software. Individual autopilots may or may not obey      the recommended messages. */
        public enum MAV_DATA_STREAM
        {
            ///<summary> Enable all data streams | </summary>
            ALL = 0,
            ///<summary> Enable IMU_RAW, GPS_RAW, GPS_STATUS packets. | </summary>
            RAW_SENSORS = 1,
            ///<summary> Enable GPS_STATUS, CONTROL_STATUS, AUX_STATUS | </summary>
            EXTENDED_STATUS = 2,
            ///<summary> Enable RC_CHANNELS_SCALED, RC_CHANNELS_RAW, SERVO_OUTPUT_RAW | </summary>
            RC_CHANNELS = 3,
            ///<summary> Enable ATTITUDE_CONTROLLER_OUTPUT, POSITION_CONTROLLER_OUTPUT, NAV_CONTROLLER_OUTPUT. | </summary>
            RAW_CONTROLLER = 4,
            ///<summary> Enable LOCAL_POSITION, GLOBAL_POSITION/GLOBAL_POSITION_INT messages. | </summary>
            POSITION = 6,
            ///<summary> Dependent on the autopilot | </summary>
            EXTRA1 = 10,
            ///<summary> Dependent on the autopilot | </summary>
            EXTRA2 = 11,
            ///<summary> Dependent on the autopilot | </summary>
            EXTRA3 = 12,
            ///<summary>  | </summary>
            ENUM_END = 13,
            //Plane Stream
            GHOST_STREAM = 15
        };

        /** @brief  The ROI (region of interest) for the vehicle. This can be                 be used by the vehicle for camera/vehicle attitude alignment (see                 MAV_CMD_NAV_ROI). */
        public enum MAV_ROI
        {
            ///<summary> No region of interest. | </summary>
            NONE = 0,
            ///<summary> Point toward next MISSION. | </summary>
            WPNEXT = 1,
            ///<summary> Point toward given MISSION. | </summary>
            WPINDEX = 2,
            ///<summary> Point toward fixed location. | </summary>
            LOCATION = 3,
            ///<summary> Point toward of given id. | </summary>
            TARGET = 4,
            ///<summary>  | </summary>
            ENUM_END = 5,

        };

        /** @brief ACK / NACK / ERROR values as a result of MAV_CMDs and for mission item transmission. */
        public enum MAV_CMD_ACK
        {
            ///<summary> Command / mission item is ok. | </summary>
            OK = 1,
            ///<summary> Generic error message if none of the other reasons fails or if no detailed error reporting is implemented. | </summary>
            ERR_FAIL = 2,
            ///<summary> The system is refusing to accept this command from this source / communication partner. | </summary>
            ERR_ACCESS_DENIED = 3,
            ///<summary> Command or mission item is not supported, other commands would be accepted. | </summary>
            ERR_NOT_SUPPORTED = 4,
            ///<summary> The coordinate frame of this command / mission item is not supported. | </summary>
            ERR_COORDINATE_FRAME_NOT_SUPPORTED = 5,
            ///<summary> The coordinate frame of this command is ok, but he coordinate values exceed the safety limits of this system. This is a generic error, please use the more specific error messages below if possible. | </summary>
            ERR_COORDINATES_OUT_OF_RANGE = 6,
            ///<summary> The X or latitude value is out of range. | </summary>
            ERR_X_LAT_OUT_OF_RANGE = 7,
            ///<summary> The Y or longitude value is out of range. | </summary>
            ERR_Y_LON_OUT_OF_RANGE = 8,
            ///<summary> The Z or altitude value is out of range. | </summary>
            ERR_Z_ALT_OUT_OF_RANGE = 9,
            ///<summary>  | </summary>
            ENUM_END = 10,

        };

        /** @brief Specifies the datatype of a MAVLink parameter. */
        public enum MAV_PARAM_TYPE
        {
            ///<summary> 8-bit unsigned integer | </summary>
            UINT8 = 1,
            ///<summary> 8-bit signed integer | </summary>
            INT8 = 2,
            ///<summary> 16-bit unsigned integer | </summary>
            UINT16 = 3,
            ///<summary> 16-bit signed integer | </summary>
            INT16 = 4,
            ///<summary> 32-bit unsigned integer | </summary>
            UINT32 = 5,
            ///<summary> 32-bit signed integer | </summary>
            INT32 = 6,
            ///<summary> 64-bit unsigned integer | </summary>
            UINT64 = 7,
            ///<summary> 64-bit signed integer | </summary>
            INT64 = 8,
            ///<summary> 32-bit floating-point | </summary>
            REAL32 = 9,
            ///<summary> 64-bit floating-point | </summary>
            REAL64 = 10,
            ///<summary>  | </summary>
            ENUM_END = 11,

        };

        /** @brief result from a mavlink command */
        public enum MAV_RESULT
        {
            ///<summary> Command ACCEPTED and EXECUTED | </summary>
            ACCEPTED = 0,
            ///<summary> Command TEMPORARY REJECTED/DENIED | </summary>
            TEMPORARILY_REJECTED = 1,
            ///<summary> Command PERMANENTLY DENIED | </summary>
            DENIED = 2,
            ///<summary> Command UNKNOWN/UNSUPPORTED | </summary>
            UNSUPPORTED = 3,
            ///<summary> Command executed, but failed | </summary>
            FAILED = 4,
            ///<summary>  | </summary>
            ENUM_END = 5,

        };

        /** @brief result in a mavlink mission ack */
        public enum MAV_MISSION_RESULT
        {
            ///<summary> mission accepted OK | </summary>
            MAV_MISSION_ACCEPTED = 0,
            ///<summary> generic error / not accepting mission commands at all right now | </summary>
            MAV_MISSION_ERROR = 1,
            ///<summary> coordinate frame is not supported | </summary>
            MAV_MISSION_UNSUPPORTED_FRAME = 2,
            ///<summary> command is not supported | </summary>
            MAV_MISSION_UNSUPPORTED = 3,
            ///<summary> mission item exceeds storage space | </summary>
            MAV_MISSION_NO_SPACE = 4,
            ///<summary> one of the parameters has an invalid value | </summary>
            MAV_MISSION_INVALID = 5,
            ///<summary> param1 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM1 = 6,
            ///<summary> param2 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM2 = 7,
            ///<summary> param3 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM3 = 8,
            ///<summary> param4 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM4 = 9,
            ///<summary> x/param5 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM5_X = 10,
            ///<summary> y/param6 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM6_Y = 11,
            ///<summary> param7 has an invalid value | </summary>
            MAV_MISSION_INVALID_PARAM7 = 12,
            ///<summary> received waypoint out of sequence | </summary>
            MAV_MISSION_INVALID_SEQUENCE = 13,
            ///<summary> not accepting any mission commands from this communication partner | </summary>
            MAV_MISSION_DENIED = 14,
            ///<summary>  | </summary>
            ENUM_END = 15,

        };

        /** @brief Indicates the severity level, generally used for status messages to indicate their relative urgency. Based on RFC-5424 using expanded definitions at: http://www.kiwisyslog.com/kb/info:-syslog-message-levels/. */
        public enum MAV_SEVERITY
        {
            ///<summary> System is unusable. This is a "panic" condition. | </summary>
            EMERGENCY = 0,
            ///<summary> Action should be taken immediately. Indicates error in non-critical systems. | </summary>
            ALERT = 1,
            ///<summary> Action must be taken immediately. Indicates failure in a primary system. | </summary>
            CRITICAL = 2,
            ///<summary> Indicates an error in secondary/redundant systems. | </summary>
            ERROR = 3,
            ///<summary> Indicates about a possible future error if this is not resolved within a given timeframe. Example would be a low battery warning. | </summary>
            WARNING = 4,
            ///<summary> An unusual event has occured, though not an error condition. This should be investigated for the root cause. | </summary>
            NOTICE = 5,
            ///<summary> Normal operational messages. Useful for logging. No action is required for these messages. | </summary>
            INFO = 6,
            ///<summary> Useful non-operational messages that can assist in debugging. These should not occur during normal operation. | </summary>
            DEBUG = 7,
            ///<summary>  | </summary>
            ENUM_END = 8,

        };

        public enum MAVLINK_MSG_ID
        {
            HEARTBEAT = 0,
            SYS_STATUS = 1,
            SYSTEM_TIME = 2,
            PING = 4,
            CHANGE_OPERATOR_CONTROL = 5,
            CHANGE_OPERATOR_CONTROL_ACK = 6,
            AUTH_KEY = 7,
            SET_MODE = 11,
            PARAM_REQUEST_READ = 20,
            PARAM_REQUEST_LIST = 21,
            PARAM_VALUE = 22,
            PARAM_SET = 23,
            GPS_RAW_INT = 24,
            GPS_STATUS = 25,
            SCALED_IMU = 26,
            RAW_IMU = 27,
            RAW_PRESSURE = 28,
            SCALED_PRESSURE = 29,
            ATTITUDE = 30,
            ATTITUDE_QUATERNION = 31,
            LOCAL_POSITION_NED = 32,
            GLOBAL_POSITION_INT = 33,
            RC_CHANNELS_SCALED = 34,
            RC_CHANNELS_RAW = 35,
            SERVO_OUTPUT_RAW = 36,
            MISSION_REQUEST_PARTIAL_LIST = 37,
            MISSION_WRITE_PARTIAL_LIST = 38,
            MISSION_ITEM = 39,
            MISSION_REQUEST = 40,
            MISSION_SET_CURRENT = 41,
            MISSION_CURRENT = 42,
            MISSION_REQUEST_LIST = 43,
            MISSION_COUNT = 44,
            MISSION_CLEAR_ALL = 45,
            MISSION_ITEM_REACHED = 46,
            MISSION_ACK = 47,
            SET_GPS_GLOBAL_ORIGIN = 48,
            GPS_GLOBAL_ORIGIN = 49,
            SET_LOCAL_POSITION_SETPOINT = 50,
            LOCAL_POSITION_SETPOINT = 51,
            GLOBAL_POSITION_SETPOINT_INT = 52,
            SET_GLOBAL_POSITION_SETPOINT_INT = 53,
            SAFETY_SET_ALLOWED_AREA = 54,
            SAFETY_ALLOWED_AREA = 55,
            SET_ROLL_PITCH_YAW_THRUST = 56,
            SET_ROLL_PITCH_YAW_SPEED_THRUST = 57,
            ROLL_PITCH_YAW_THRUST_SETPOINT = 58,
            ROLL_PITCH_YAW_SPEED_THRUST_SETPOINT = 59,
            SET_QUAD_MOTORS_SETPOINT = 60,
            SET_QUAD_SWARM_ROLL_PITCH_YAW_THRUST = 61,
            NAV_CONTROLLER_OUTPUT = 62,
            SET_QUAD_SWARM_LED_ROLL_PITCH_YAW_THRUST = 63,
            STATE_CORRECTION = 64,
            RC_CHANNELS = 65,
            REQUEST_DATA_STREAM = 66,
            DATA_STREAM = 67,
            MANUAL_CONTROL = 69,
            RC_CHANNELS_OVERRIDE = 70,
            VFR_HUD = 74,
            COMMAND_LONG = 76,
            COMMAND_ACK = 77,
            ROLL_PITCH_YAW_RATES_THRUST_SETPOINT = 80,
            MANUAL_SETPOINT = 81,
            LOCAL_POSITION_NED_SYSTEM_GLOBAL_OFFSET = 89,
            HIL_STATE = 90,
            HIL_CONTROLS = 91,
            HIL_RC_INPUTS_RAW = 92,
            OPTICAL_FLOW = 100,
            GLOBAL_VISION_POSITION_ESTIMATE = 101,
            VISION_POSITION_ESTIMATE = 102,
            VISION_SPEED_ESTIMATE = 103,
            VICON_POSITION_ESTIMATE = 104,
            HIGHRES_IMU = 105,
            OMNIDIRECTIONAL_FLOW = 106,
            HIL_SENSOR = 107,
            SIM_STATE = 108,
            RADIO_STATUS = 109,
            FILE_TRANSFER_START = 110,
            FILE_TRANSFER_DIR_LIST = 111,
            FILE_TRANSFER_RES = 112,
            HIL_GPS = 113,
            HIL_OPTICAL_FLOW = 114,
            HIL_STATE_QUATERNION = 115,
            SCALED_IMU2 = 116,
            LOG_REQUEST_LIST = 117,
            LOG_ENTRY = 118,
            LOG_REQUEST_DATA = 119,
            LOG_DATA = 120,
            LOG_ERASE = 121,
            LOG_REQUEST_END = 122,
            GPS_INJECT_DATA = 123,
            GPS2_RAW = 124,
            POWER_STATUS = 125,
            SERIAL_CONTROL = 126,
            DATA_TRANSMISSION_HANDSHAKE = 130,
            ENCAPSULATED_DATA = 131,
            BATTERY_STATUS = 147,
            SETPOINT_8DOF = 148,
            SETPOINT_6DOF = 149,
            SENSOR_OFFSETS = 150,
            SET_MAG_OFFSETS = 151,
            MEMINFO = 152,
            AP_ADC = 153,
            DIGICAM_CONFIGURE = 154,
            DIGICAM_CONTROL = 155,
            MOUNT_CONFIGURE = 156,
            MOUNT_CONTROL = 157,
            MOUNT_STATUS = 158,
            FENCE_POINT = 160,
            FENCE_FETCH_POINT = 161,
            FENCE_STATUS = 162,
            AHRS = 163,
            SIMSTATE = 164,
            HWSTATUS = 165,
            RADIO = 166,
            LIMITS_STATUS = 167,
            WIND = 168,
            DATA16 = 169,
            DATA32 = 170,
            DATA64 = 171,
            DATA96 = 172,
            RANGEFINDER = 173,
            AIRSPEED_AUTOCAL = 174,
            RALLY_POINT = 175,
            RALLY_FETCH_POINT = 176,
            COMPASSMOT_STATUS = 177,
            AHRS2 = 178,
            MOBILE_CONTROL = 200,
            SET_PAIR = 201,
            MEMORY_VECT = 249,
            DEBUG_VECT = 250,
            NAMED_VALUE_FLOAT = 251,
            NAMED_VALUE_INT = 252,
            STATUSTEXT = 253,
            DEBUG = 254
        }

        public const byte MAVLINK_MSG_ID_SCALED_IMU2 = 116;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 22)]
        public struct mavlink_scaled_imu2_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> X acceleration (mg) </summary>
            public Int16 xacc;
            /// <summary> Y acceleration (mg) </summary>
            public Int16 yacc;
            /// <summary> Z acceleration (mg) </summary>
            public Int16 zacc;
            /// <summary> Angular speed around X axis (millirad /sec) </summary>
            public Int16 xgyro;
            /// <summary> Angular speed around Y axis (millirad /sec) </summary>
            public Int16 ygyro;
            /// <summary> Angular speed around Z axis (millirad /sec) </summary>
            public Int16 zgyro;
            /// <summary> X Magnetic field (milli tesla) </summary>
            public Int16 xmag;
            /// <summary> Y Magnetic field (milli tesla) </summary>
            public Int16 ymag;
            /// <summary> Z Magnetic field (milli tesla) </summary>
            public Int16 zmag;

        };

        public const byte MAVLINK_MSG_ID_SENSOR_OFFSETS = 150;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 42)]
        public struct mavlink_sensor_offsets_t
        {
            /// <summary> magnetic declination (radians) </summary>
            public Single mag_declination;
            /// <summary> raw pressure from barometer </summary>
            public Int32 raw_press;
            /// <summary> raw temperature from barometer </summary>
            public Int32 raw_temp;
            /// <summary> gyro X calibration </summary>
            public Single gyro_cal_x;
            /// <summary> gyro Y calibration </summary>
            public Single gyro_cal_y;
            /// <summary> gyro Z calibration </summary>
            public Single gyro_cal_z;
            /// <summary> accel X calibration </summary>
            public Single accel_cal_x;
            /// <summary> accel Y calibration </summary>
            public Single accel_cal_y;
            /// <summary> accel Z calibration </summary>
            public Single accel_cal_z;
            /// <summary> magnetometer X offset </summary>
            public Int16 mag_ofs_x;
            /// <summary> magnetometer Y offset </summary>
            public Int16 mag_ofs_y;
            /// <summary> magnetometer Z offset </summary>
            public Int16 mag_ofs_z;

        };


        public const byte MAVLINK_MSG_ID_SET_MAG_OFFSETS = 151;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 8)]
        public struct mavlink_set_mag_offsets_t
        {
            /// <summary> magnetometer X offset </summary>
            public Int16 mag_ofs_x;
            /// <summary> magnetometer Y offset </summary>
            public Int16 mag_ofs_y;
            /// <summary> magnetometer Z offset </summary>
            public Int16 mag_ofs_z;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MEMINFO = 152;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 4)]
        public struct mavlink_meminfo_t
        {
            /// <summary> heap top </summary>
            public UInt16 brkval;
            /// <summary> free memory </summary>
            public UInt16 freemem;

        };


        public const byte MAVLINK_MSG_ID_AP_ADC = 153;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 12)]
        public struct mavlink_ap_adc_t
        {
            /// <summary> ADC output 1 </summary>
            public UInt16 adc1;
            /// <summary> ADC output 2 </summary>
            public UInt16 adc2;
            /// <summary> ADC output 3 </summary>
            public UInt16 adc3;
            /// <summary> ADC output 4 </summary>
            public UInt16 adc4;
            /// <summary> ADC output 5 </summary>
            public UInt16 adc5;
            /// <summary> ADC output 6 </summary>
            public UInt16 adc6;

        };


        public const byte MAVLINK_MSG_ID_DIGICAM_CONFIGURE = 154;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 15)]
        public struct mavlink_digicam_configure_t
        {
            /// <summary> Correspondent value to given extra_param </summary>
            public Single extra_value;
            /// <summary> Divisor number //e.g. 1000 means 1/1000 (0 means ignore) </summary>
            public UInt16 shutter_speed;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> Mode enumeration from 1 to N //P, TV, AV, M, Etc (0 means ignore) </summary>
            public byte mode;
            /// <summary> F stop number x 10 //e.g. 28 means 2.8 (0 means ignore) </summary>
            public byte aperture;
            /// <summary> ISO enumeration from 1 to N //e.g. 80, 100, 200, Etc (0 means ignore) </summary>
            public byte iso;
            /// <summary> Exposure type enumeration from 1 to N (0 means ignore) </summary>
            public byte exposure_type;
            /// <summary> Command Identity (incremental loop: 0 to 255)//A command sent multiple times will be executed or pooled just once </summary>
            public byte command_id;
            /// <summary> Main engine cut-off time before camera trigger in seconds/10 (0 means no cut-off) </summary>
            public byte engine_cut_off;
            /// <summary> Extra parameters enumeration (0 means ignore) </summary>
            public byte extra_param;

        };


        public const byte MAVLINK_MSG_ID_DIGICAM_CONTROL = 155;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 13)]
        public struct mavlink_digicam_control_t
        {
            /// <summary> Correspondent value to given extra_param </summary>
            public Single extra_value;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> 0: stop, 1: start or keep it up //Session control e.g. show/hide lens </summary>
            public byte session;
            /// <summary> 1 to N //Zoom's absolute position (0 means ignore) </summary>
            public byte zoom_pos;
            /// <summary> -100 to 100 //Zooming step value to offset zoom from the current position </summary>
            public byte zoom_step;
            /// <summary> 0: unlock focus or keep unlocked, 1: lock focus or keep locked, 3: re-lock focus </summary>
            public byte focus_lock;
            /// <summary> 0: ignore, 1: shot or start filming </summary>
            public byte shot;
            /// <summary> Command Identity (incremental loop: 0 to 255)//A command sent multiple times will be executed or pooled just once </summary>
            public byte command_id;
            /// <summary> Extra parameters enumeration (0 means ignore) </summary>
            public byte extra_param;

        };


        public const byte MAVLINK_MSG_ID_MOUNT_CONFIGURE = 156;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 6)]
        public struct mavlink_mount_configure_t
        {
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> mount operating mode (see MAV_MOUNT_MODE enum) </summary>
            public byte mount_mode;
            /// <summary> (1 = yes, 0 = no) </summary>
            public byte stab_roll;
            /// <summary> (1 = yes, 0 = no) </summary>
            public byte stab_pitch;
            /// <summary> (1 = yes, 0 = no) </summary>
            public byte stab_yaw;

        };


        public const byte MAVLINK_MSG_ID_MOUNT_CONTROL = 157;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 15)]
        public struct mavlink_mount_control_t
        {
            /// <summary> pitch(deg*100) or lat, depending on mount mode </summary>
            public Int32 input_a;
            /// <summary> roll(deg*100) or lon depending on mount mode </summary>
            public Int32 input_b;
            /// <summary> yaw(deg*100) or alt (in cm) depending on mount mode </summary>
            public Int32 input_c;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> if "1" it will save current trimmed position on EEPROM (just valid for NEUTRAL and LANDING) </summary>
            public byte save_position;

        };


        public const byte MAVLINK_MSG_ID_MOUNT_STATUS = 158;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 14)]
        public struct mavlink_mount_status_t
        {
            /// <summary> pitch(deg*100) or lat, depending on mount mode </summary>
            public Int32 pointing_a;
            /// <summary> roll(deg*100) or lon depending on mount mode </summary>
            public Int32 pointing_b;
            /// <summary> yaw(deg*100) or alt (in cm) depending on mount mode </summary>
            public Int32 pointing_c;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_FENCE_POINT = 160;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 12)]
        public struct mavlink_fence_point_t
        {
            /// <summary> Latitude of point </summary>
            public Single lat;
            /// <summary> Longitude of point </summary>
            public Single lng;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> point index (first point is 1, 0 is for return point) </summary>
            public byte idx;
            /// <summary> total number of points (for sanity checking) </summary>
            public byte count;

        };


        public const byte MAVLINK_MSG_ID_FENCE_FETCH_POINT = 161;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 3)]
        public struct mavlink_fence_fetch_point_t
        {
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> point index (first point is 1, 0 is for return point) </summary>
            public byte idx;

        };


        public const byte MAVLINK_MSG_ID_FENCE_STATUS = 162;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 8)]
        public struct mavlink_fence_status_t
        {
            /// <summary> time of last breach in milliseconds since boot </summary>
            public UInt32 breach_time;
            /// <summary> number of fence breaches </summary>
            public UInt16 breach_count;
            /// <summary> 0 if currently inside fence, 1 if outside </summary>
            public byte breach_status;
            /// <summary> last breach type (see FENCE_BREACH_* enum) </summary>
            public byte breach_type;

        };


        public const byte MAVLINK_MSG_ID_AHRS = 163;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 28)]
        public struct mavlink_ahrs_t
        {
            /// <summary> X gyro drift estimate rad/s </summary>
            public Single omegaIx;
            /// <summary> Y gyro drift estimate rad/s </summary>
            public Single omegaIy;
            /// <summary> Z gyro drift estimate rad/s </summary>
            public Single omegaIz;
            /// <summary> average accel_weight </summary>
            public Single accel_weight;
            /// <summary> average renormalisation value </summary>
            public Single renorm_val;
            /// <summary> average error_roll_pitch value </summary>
            public Single error_rp;
            /// <summary> average error_yaw value </summary>
            public Single error_yaw;

        };


        public const byte MAVLINK_MSG_ID_SIMSTATE = 164;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 44)]
        public struct mavlink_simstate_t
        {
            /// <summary> Roll angle (rad) </summary>
            public Single roll;
            /// <summary> Pitch angle (rad) </summary>
            public Single pitch;
            /// <summary> Yaw angle (rad) </summary>
            public Single yaw;
            /// <summary> X acceleration m/s/s </summary>
            public Single xacc;
            /// <summary> Y acceleration m/s/s </summary>
            public Single yacc;
            /// <summary> Z acceleration m/s/s </summary>
            public Single zacc;
            /// <summary> Angular speed around X axis rad/s </summary>
            public Single xgyro;
            /// <summary> Angular speed around Y axis rad/s </summary>
            public Single ygyro;
            /// <summary> Angular speed around Z axis rad/s </summary>
            public Single zgyro;
            /// <summary> Latitude in degrees </summary>
            public Single lat;
            /// <summary> Longitude in degrees </summary>
            public Single lng;

        };


        public const byte MAVLINK_MSG_ID_HWSTATUS = 165;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 3)]
        public struct mavlink_hwstatus_t
        {
            /// <summary> board voltage (mV) </summary>
            public UInt16 Vcc;
            /// <summary> I2C error count </summary>
            public byte I2Cerr;

        };


        public const byte MAVLINK_MSG_ID_RADIO = 109;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 9)]
        public struct mavlink_radio_t
        {
            /// <summary> receive errors </summary>
            public UInt16 rxerrors;
            /// <summary> count of error corrected packets </summary>
            public UInt16 fixedp;
            /// <summary> local signal strength </summary>
            public byte rssi;
            /// <summary> remote signal strength </summary>
            public byte remrssi;
            /// <summary> how full the tx buffer is as a percentage </summary>
            public byte txbuf;
            /// <summary> background noise level </summary>
            public byte noise;
            /// <summary> remote background noise level </summary>
            public byte remnoise;
        };


        public const byte MAVLINK_MSG_ID_LIMITS_STATUS = 167;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 22)]
        public struct mavlink_limits_status_t
        {
            /// <summary> time of last breach in milliseconds since boot </summary>
            public UInt32 last_trigger;
            /// <summary> time of last recovery action in milliseconds since boot </summary>
            public UInt32 last_action;
            /// <summary> time of last successful recovery in milliseconds since boot </summary>
            public UInt32 last_recovery;
            /// <summary> time of last all-clear in milliseconds since boot </summary>
            public UInt32 last_clear;
            /// <summary> number of fence breaches </summary>
            public UInt16 breach_count;
            /// <summary> state of AP_Limits, (see enum LimitState, LIMITS_STATE) </summary>
            public byte limits_state;
            /// <summary> AP_Limit_Module bitfield of enabled modules, (see enum moduleid or LIMIT_MODULE) </summary>
            public byte mods_enabled;
            /// <summary> AP_Limit_Module bitfield of required modules, (see enum moduleid or LIMIT_MODULE) </summary>
            public byte mods_required;
            /// <summary> AP_Limit_Module bitfield of triggered modules, (see enum moduleid or LIMIT_MODULE) </summary>
            public byte mods_triggered;

        };


        public const byte MAVLINK_MSG_ID_WIND = 168;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 12)]
        public struct mavlink_wind_t
        {
            /// <summary> wind direction that wind is coming from (degrees) </summary>
            public Single direction;
            /// <summary> wind speed in ground plane (m/s) </summary>
            public Single speed;
            /// <summary> vertical wind speed (m/s) </summary>
            public Single speed_z;

        };


        public const byte MAVLINK_MSG_ID_DATA16 = 169;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 18)]
        public struct mavlink_data16_t
        {
            /// <summary> data type </summary>
            public byte type;
            /// <summary> data length </summary>
            public byte len;
            /// <summary> raw data </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public byte[] data;

        };


        public const byte MAVLINK_MSG_ID_DATA32 = 170;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 34)]
        public struct mavlink_data32_t
        {
            /// <summary> data type </summary>
            public byte type;
            /// <summary> data length </summary>
            public byte len;
            /// <summary> raw data </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
            public byte[] data;

        };


        public const byte MAVLINK_MSG_ID_DATA64 = 171;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 66)]
        public struct mavlink_data64_t
        {
            /// <summary> data type </summary>
            public byte type;
            /// <summary> data length </summary>
            public byte len;
            /// <summary> raw data </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)]
            public byte[] data;

        };


        public const byte MAVLINK_MSG_ID_DATA96 = 172;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 98)]
        public struct mavlink_data96_t
        {
            /// <summary> data type </summary>
            public byte type;
            /// <summary> data length </summary>
            public byte len;
            /// <summary> raw data </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 96)]
            public byte[] data;

        };


        public const byte MAVLINK_MSG_ID_RANGEFINDER = 173;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 8)]
        public struct mavlink_rangefinder_t
        {
            /// <summary> distance in meters </summary>
            public Single distance;
            /// <summary> raw voltage if available, zero otherwise </summary>
            public Single voltage;

        };


        public const byte MAVLINK_MSG_ID_HEARTBEAT = 0;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 9)]
        public struct mavlink_heartbeat_t
        {
            /// <summary> A bitfield for use for autopilot-specific flags. </summary>
            public UInt32 custom_mode;
            /// <summary> Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM) </summary>
            public byte type;
            /// <summary> Autopilot type / class. defined in MAV_AUTOPILOT ENUM
            /// // 林俊清, 20160311, 亿航用作切过 GPS 模式的标志。</summary>
            public byte autopilot;
            /// <summary> System mode bitfield, see MAV_MODE_FLAGS ENUM in mavlink/include/mavlink_types.h </summary>
            public byte base_mode;
            /// <summary> System status flag, see MAV_STATE ENUM </summary>
            public byte system_status;
            /// <summary> MAVLink version, not writable by user, gets added by protocol because of magic data type: uint8_t_mavlink_version </summary>
            public byte mavlink_version;
        };


        public const byte MAVLINK_MSG_ID_SYS_STATUS = 1;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 31)]
        public struct mavlink_sys_status_t
        {
            /// <summary> Bitmask showing which onboard controllers and sensors are present. Value of 0: not present. Value of 1: present. Indices: 0: 3D gyro, 1: 3D acc, 2: 3D mag, 3: absolute pressure, 4: differential pressure, 5: GPS, 6: optical flow, 7: computer vision position, 8: laser based position, 9: external ground-truth (Vicon or Leica). Controllers: 10: 3D angular rate control 11: attitude stabilization, 12: yaw position, 13: z/altitude control, 14: x/y position control, 15: motor outputs / control </summary>
            public UInt32 onboard_control_sensors_present;
            /// <summary> Bitmask showing which onboard controllers and sensors are enabled:  Value of 0: not enabled. Value of 1: enabled. Indices: 0: 3D gyro, 1: 3D acc, 2: 3D mag, 3: absolute pressure, 4: differential pressure, 5: GPS, 6: optical flow, 7: computer vision position, 8: laser based position, 9: external ground-truth (Vicon or Leica). Controllers: 10: 3D angular rate control 11: attitude stabilization, 12: yaw position, 13: z/altitude control, 14: x/y position control, 15: motor outputs / control </summary>
            public UInt32 onboard_control_sensors_enabled;
            /// <summary> Bitmask showing which onboard controllers and sensors are operational or have an error:  Value of 0: not enabled. Value of 1: enabled. Indices: 0: 3D gyro, 1: 3D acc, 2: 3D mag, 3: absolute pressure, 4: differential pressure, 5: GPS, 6: optical flow, 7: computer vision position, 8: laser based position, 9: external ground-truth (Vicon or Leica). Controllers: 10: 3D angular rate control 11: attitude stabilization, 12: yaw position, 13: z/altitude control, 14: x/y position control, 15: motor outputs / control </summary>
            public UInt32 onboard_control_sensors_health;
            /// <summary> Maximum usage in percent of the mainloop time, (0%: 0, 100%: 1000) should be always below 1000 </summary>
            public UInt16 load;
            /// <summary> Battery voltage, in millivolts (1 = 1 millivolt) </summary>
            public UInt16 voltage_battery;
            /// <summary> Battery current, in 10*milliamperes (1 = 10 milliampere), -1: autopilot does not measure the current </summary>
            public Int16 current_battery;
            /// <summary> Communication drops in percent, (0%: 0, 100%: 10'000), (UART, I2C, SPI, CAN), dropped packets on all links (packets that were corrupted on reception on the MAV) </summary>
            public UInt16 drop_rate_comm;
            /// <summary> Communication errors (UART, I2C, SPI, CAN), dropped packets on all links (packets that were corrupted on reception on the MAV) </summary>
            public UInt16 errors_comm;
            /// <summary> Autopilot-specific errors </summary>
            public UInt16 errors_count1;
            /// <summary> Autopilot-specific errors </summary>
            public UInt16 errors_count2;
            /// <summary> Autopilot-specific errors </summary>
            public UInt16 errors_count3;
            /// <summary> Autopilot-specific errors </summary>
            public UInt16 errors_count4;
            /// <summary> Remaining battery energy: (0%: 0, 100%: 100), -1: autopilot estimate the remaining battery </summary>
            public byte battery_remaining;

        };


        public const byte MAVLINK_MSG_ID_SYSTEM_TIME = 2;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 12)]
        public struct mavlink_system_time_t
        {
            /// <summary> Timestamp of the master clock in microseconds since UNIX epoch. </summary>
            public UInt64 time_unix_usec;
            /// <summary> Timestamp of the component clock since boot time in milliseconds. </summary>
            public UInt32 time_boot_ms;

        };


        public const byte MAVLINK_MSG_ID_PING = 4;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 14)]
        public struct mavlink_ping_t
        {
            /// <summary> Unix timestamp in microseconds </summary>
            public UInt64 time_usec;
            /// <summary> PING sequence </summary>
            public UInt32 seq;
            /// <summary> 0: request ping from all receiving systems, if greater than 0: message is a ping response and number is the system id of the requesting system </summary>
            public byte target_system;
            /// <summary> 0: request ping from all receiving components, if greater than 0: message is a ping response and number is the system id of the requesting system </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_CHANGE_OPERATOR_CONTROL = 5;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 28)]
        public struct mavlink_change_operator_control_t
        {
            /// <summary> System the GCS requests control for </summary>
            public byte target_system;
            /// <summary> 0: request control of this MAV, 1: Release control of this MAV </summary>
            public byte control_request;
            /// <summary> 0: key as plaintext, 1-255: future, different hashing/encryption variants. The GCS should in general use the safest mode possible initially and then gradually move down the encryption level if it gets a NACK message indicating an encryption mismatch. </summary>
            public byte version;
            /// <summary> Password / Key, depending on version plaintext or encrypted. 25 or less characters, NULL terminated. The characters may involve A-Z, a-z, 0-9, and "!?,.-" </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 25)]
            public byte[] passkey;

        };


        public const byte MAVLINK_MSG_ID_CHANGE_OPERATOR_CONTROL_ACK = 6;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 3)]
        public struct mavlink_change_operator_control_ack_t
        {
            /// <summary> ID of the GCS this message  </summary>
            public byte gcs_system_id;
            /// <summary> 0: request control of this MAV, 1: Release control of this MAV </summary>
            public byte control_request;
            /// <summary> 0: ACK, 1: NACK: Wrong passkey, 2: NACK: Unsupported passkey encryption method, 3: NACK: Already under control </summary>
            public byte ack;

        };


        public const byte MAVLINK_MSG_ID_AUTH_KEY = 7;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 32)]
        public struct mavlink_auth_key_t
        {
            /// <summary> key </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
            public byte[] key;

        };


        public const byte MAVLINK_MSG_ID_SET_MODE = 11;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 6)]
        public struct mavlink_set_mode_t
        {
            /// <summary> The new autopilot-specific mode. This field can be ignored by an autopilot. </summary>
            public UInt32 custom_mode;
            /// <summary> The system setting the mode </summary>
            public byte target_system;
            /// <summary> The new base mode </summary>
            public byte base_mode;

        };


        public const byte MAVLINK_MSG_ID_PARAM_REQUEST_READ = 20;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 20)]
        public struct mavlink_param_request_read_t
        {
            /// <summary> Parameter index. Send -1 to use the param ID field as identifier (else the param id will be ignored) </summary>
            public Int16 param_index;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> Onboard parameter id, terminated by NULL if the length is less than 16 human-readable chars and WITHOUT null termination (NULL) byte if the length is exactly 16 chars - applications have to provide 16+1 bytes storage if the ID is stored as string </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public byte[] param_id;

        };


        public const byte MAVLINK_MSG_ID_PARAM_REQUEST_LIST = 21;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 2)]
        public struct mavlink_param_request_list_t
        {
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_PARAM_VALUE = 22;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 25)]
        public struct mavlink_param_value_t
        {
            /// <summary> Onboard parameter value </summary>
            public Single param_value;
            /// <summary> Total number of onboard parameters </summary>
            public UInt16 param_count;
            /// <summary> Index of this onboard parameter </summary>
            public UInt16 param_index;
            /// <summary> Onboard parameter id, terminated by NULL if the length is less than 16 human-readable chars and WITHOUT null termination (NULL) byte if the length is exactly 16 chars - applications have to provide 16+1 bytes storage if the ID is stored as string </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public byte[] param_id;
            /// <summary> Onboard parameter type: see the MAV_PARAM_TYPE enum for supported data types. </summary>
            public byte param_type;

        };


        public const byte MAVLINK_MSG_ID_PARAM_SET = 23;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 23)]
        public struct mavlink_param_set_t
        {
            /// <summary> Onboard parameter value </summary>
            public Single param_value;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> Onboard parameter id, terminated by NULL if the length is less than 16 human-readable chars and WITHOUT null termination (NULL) byte if the length is exactly 16 chars - applications have to provide 16+1 bytes storage if the ID is stored as string </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public byte[] param_id;
            /// <summary> Onboard parameter type: see the MAV_PARAM_TYPE enum for supported data types. </summary>
            public byte param_type;

        };


        public const byte MAVLINK_MSG_ID_GPS_RAW_INT = 24;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 30)]
        public struct mavlink_gps_raw_int_t
        {
            /// <summary> Timestamp (microseconds since UNIX epoch or microseconds since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> Latitude in 1E7 degrees </summary>
            public Int32 lat;
            /// <summary> Longitude in 1E7 degrees </summary>
            public Int32 lon;
            /// <summary> Altitude in 1E3 meters (millimeters) above MSL </summary>
            public Int32 alt;
            /// <summary> GPS HDOP horizontal dilution of position in cm (m*100). If unknown, set to: 65535 </summary>
            public UInt16 eph;
            /// <summary> GPS VDOP horizontal dilution of position in cm (m*100). If unknown, set to: 65535 </summary>
            public UInt16 epv;
            /// <summary> GPS ground speed (m/s * 100). If unknown, set to: 65535 </summary>
            public UInt16 vel;
            /// <summary> Course over ground (NOT heading, but direction of movement) in degrees * 100, 0.0..359.99 degrees. If unknown, set to: 65535 </summary>
            public UInt16 cog;
            /// <summary> 0-1: no fix, 2: 2D fix, 3: 3D fix. Some applications will not use the value of this field unless it is at least two, so always correctly fill in the fix. </summary>
            public byte fix_type;
            /// <summary> Number of satellites visible. If unknown, set to 255 </summary>
            public byte satellites_visible;

        };

        public const byte MAVLINK_MSG_ID_GPS_STATUS = 25;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 101)]
        public struct mavlink_gps_status_t
        {
            /// <summary> Number of satellites visible </summary>
            public byte satellites_visible;
            /// <summary> Global satellite ID </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public byte[] satellite_prn;
            /// <summary> 0: Satellite not used, 1: used for localization </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public byte[] satellite_used;
            /// <summary> Elevation (0: right on top of receiver, 90: on the horizon) of satellite </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public byte[] satellite_elevation;
            /// <summary> Direction of satellite, 0: 0 deg, 255: 360 deg. </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public byte[] satellite_azimuth;
            /// <summary> Signal to noise ratio of satellite </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public byte[] satellite_snr;

        };


        public const byte MAVLINK_MSG_ID_SCALED_IMU = 26;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 22)]
        public struct mavlink_scaled_imu_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> X acceleration (mg) </summary>
            public Int16 xacc;
            /// <summary> Y acceleration (mg) </summary>
            public Int16 yacc;
            /// <summary> Z acceleration (mg) </summary>
            public Int16 zacc;
            /// <summary> Angular speed around X axis (millirad /sec) </summary>
            public Int16 xgyro;
            /// <summary> Angular speed around Y axis (millirad /sec) </summary>
            public Int16 ygyro;
            /// <summary> Angular speed around Z axis (millirad /sec) </summary>
            public Int16 zgyro;
            /// <summary> X Magnetic field (milli tesla) </summary>
            public Int16 xmag;
            /// <summary> Y Magnetic field (milli tesla) </summary>
            public Int16 ymag;
            /// <summary> Z Magnetic field (milli tesla) </summary>
            public Int16 zmag;

        };


        public const byte MAVLINK_MSG_ID_RAW_IMU = 27;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 26)]
        public struct mavlink_raw_imu_t
        {
            /// <summary> Timestamp (microseconds since UNIX epoch or microseconds since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> X acceleration (raw) </summary>
            public Int16 xacc;
            /// <summary> Y acceleration (raw) </summary>
            public Int16 yacc;
            /// <summary> Z acceleration (raw) </summary>
            public Int16 zacc;
            /// <summary> Angular speed around X axis (raw) </summary>
            public Int16 xgyro;
            /// <summary> Angular speed around Y axis (raw) </summary>
            public Int16 ygyro;
            /// <summary> Angular speed around Z axis (raw) </summary>
            public Int16 zgyro;
            /// <summary> X Magnetic field (raw) </summary>
            public Int16 xmag;
            /// <summary> Y Magnetic field (raw) </summary>
            public Int16 ymag;
            /// <summary> Z Magnetic field (raw) </summary>
            public Int16 zmag;

        };


        public const byte MAVLINK_MSG_ID_RAW_PRESSURE = 28;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 16)]
        public struct mavlink_raw_pressure_t
        {
            /// <summary> Timestamp (microseconds since UNIX epoch or microseconds since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> Absolute pressure (raw) </summary>
            public Int16 press_abs;
            /// <summary> Differential pressure 1 (raw) </summary>
            public Int16 press_diff1;
            /// <summary> Differential pressure 2 (raw) </summary>
            public Int16 press_diff2;
            /// <summary> Raw Temperature measurement (raw) </summary>
            public Int16 temperature;

        };


        public const byte MAVLINK_MSG_ID_SCALED_PRESSURE = 29;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 14)]
        public struct mavlink_scaled_pressure_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> Absolute pressure (hectopascal) </summary>
            public Single press_abs;
            /// <summary> Differential pressure 1 (hectopascal) </summary>
            public Single press_diff;
            /// <summary> Temperature measurement (0.01 degrees celsius) </summary>
            public Int16 temperature;

        };


        public const byte MAVLINK_MSG_ID_ATTITUDE = 30;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 28)]
        public struct mavlink_attitude_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> Roll angle (rad, -pi..+pi) </summary>
            public Single roll;
            /// <summary> Pitch angle (rad, -pi..+pi) </summary>
            public Single pitch;
            /// <summary> Yaw angle (rad, -pi..+pi) </summary>
            public Single yaw;
            /// <summary> Roll angular speed (rad/s) </summary>
            public Single rollspeed;
            /// <summary> Pitch angular speed (rad/s) </summary>
            public Single pitchspeed;
            /// <summary> Yaw angular speed (rad/s) </summary>
            public Single yawspeed;

        };


        public const byte MAVLINK_MSG_ID_ATTITUDE_QUATERNION = 31;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 32)]
        public struct mavlink_attitude_quaternion_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> Quaternion component 1 </summary>
            public Single q1;
            /// <summary> Quaternion component 2 </summary>
            public Single q2;
            /// <summary> Quaternion component 3 </summary>
            public Single q3;
            /// <summary> Quaternion component 4 </summary>
            public Single q4;
            /// <summary> Roll angular speed (rad/s) </summary>
            public Single rollspeed;
            /// <summary> Pitch angular speed (rad/s) </summary>
            public Single pitchspeed;
            /// <summary> Yaw angular speed (rad/s) </summary>
            public Single yawspeed;

        };


        public const byte MAVLINK_MSG_ID_LOCAL_POSITION_NED = 32;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 28)]
        public struct mavlink_local_position_ned_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> X Position </summary>
            public Single x;
            /// <summary> Y Position </summary>
            public Single y;
            /// <summary> Z Position </summary>
            public Single z;
            /// <summary> X Speed </summary>
            public Single vx;
            /// <summary> Y Speed </summary>
            public Single vy;
            /// <summary> Z Speed </summary>
            public Single vz;

        };


        public const byte MAVLINK_MSG_ID_GLOBAL_POSITION_INT = 33;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 28)]
        public struct mavlink_global_position_int_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> Latitude, expressed as * 1E7 </summary>
            public Int32 lat;
            /// <summary> Longitude, expressed as * 1E7 </summary>
            public Int32 lon;
            /// <summary> Altitude in meters, expressed as * 1000 (millimeters), above MSL </summary>
            public Int32 alt;
            /// <summary> Altitude above ground in meters, expressed as * 1000 (millimeters) </summary>
            public Int32 relative_alt;
            /// <summary> Ground X Speed (Latitude), expressed as m/s * 100 </summary>
            public Int16 vx;
            /// <summary> Ground Y Speed (Longitude), expressed as m/s * 100 </summary>
            public Int16 vy;
            /// <summary> Ground Z Speed (Altitude), expressed as m/s * 100 </summary>
            public Int16 vz;
            /// <summary> Compass heading in degrees * 100, 0.0..359.99 degrees. If unknown, set to: 65535 </summary>
            public UInt16 hdg;

        };


        public const byte MAVLINK_MSG_ID_RC_CHANNELS_SCALED = 34;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 22)]
        public struct mavlink_rc_channels_scaled_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> RC channel 1 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan1_scaled;
            /// <summary> RC channel 2 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan2_scaled;
            /// <summary> RC channel 3 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan3_scaled;
            /// <summary> RC channel 4 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan4_scaled;
            /// <summary> RC channel 5 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan5_scaled;
            /// <summary> RC channel 6 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan6_scaled;
            /// <summary> RC channel 7 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan7_scaled;
            /// <summary> RC channel 8 value scaled, (-100%) -10000, (0%) 0, (100%) 10000, (invalid) 32767. </summary>
            public Int16 chan8_scaled;
            /// <summary> Servo output port (set of 8 outputs = 1 port). Most MAVs will just use one, but this allows for more than 8 servos. </summary>
            public byte port;
            /// <summary> Receive signal strength indicator, 0: 0%, 100: 100%, 255: invalid/unknown. </summary>
            public byte rssi;

        };


        public const byte MAVLINK_MSG_ID_RC_CHANNELS_RAW = 35;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 22)]
        public struct mavlink_rc_channels_raw_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> RC channel 1 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan1_raw;
            /// <summary> RC channel 2 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan2_raw;
            /// <summary> RC channel 3 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan3_raw;
            /// <summary> RC channel 4 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan4_raw;
            /// <summary> RC channel 5 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan5_raw;
            /// <summary> RC channel 6 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan6_raw;
            /// <summary> RC channel 7 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan7_raw;
            /// <summary> RC channel 8 value, in microseconds. A value of 65535 implies the channel is unused. </summary>
            public UInt16 chan8_raw;
            /// <summary> Servo output port (set of 8 outputs = 1 port). Most MAVs will just use one, but this allows for more than 8 servos. </summary>
            public byte port;
            /// <summary> Receive signal strength indicator, 0: 0%, 100: 100%, 255: invalid/unknown. </summary>
            public byte rssi;

        };


        public const byte MAVLINK_MSG_ID_SERVO_OUTPUT_RAW = 36;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 21)]
        public struct mavlink_servo_output_raw_t
        {
            /// <summary> Timestamp (microseconds since system boot) </summary>
            public UInt32 time_usec;
            /// <summary> Servo output 1 value, in microseconds </summary>
            public UInt16 servo1_raw;
            /// <summary> Servo output 2 value, in microseconds </summary>
            public UInt16 servo2_raw;
            /// <summary> Servo output 3 value, in microseconds </summary>
            public UInt16 servo3_raw;
            /// <summary> Servo output 4 value, in microseconds </summary>
            public UInt16 servo4_raw;
            /// <summary> Servo output 5 value, in microseconds </summary>
            public UInt16 servo5_raw;
            /// <summary> Servo output 6 value, in microseconds </summary>
            public UInt16 servo6_raw;
            /// <summary> Servo output 7 value, in microseconds </summary>
            public UInt16 servo7_raw;
            /// <summary> Servo output 8 value, in microseconds </summary>
            public UInt16 servo8_raw;
            /// <summary> Servo output port (set of 8 outputs = 1 port). Most MAVs will just use one, but this allows to encode more than 8 servos. </summary>
            public byte port;

        };


        public const byte MAVLINK_MSG_ID_MISSION_REQUEST_PARTIAL_LIST = 37;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 6)]
        public struct mavlink_mission_request_partial_list_t
        {
            /// <summary> Start index, 0 by default </summary>
            public Int16 start_index;
            /// <summary> End index, -1 by default (-1: send list to end). Else a valid index of the list </summary>
            public Int16 end_index;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_WRITE_PARTIAL_LIST = 38;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 6)]
        public struct mavlink_mission_write_partial_list_t
        {
            /// <summary> Start index, 0 by default and smaller / equal to the largest index of the current onboard list. </summary>
            public Int16 start_index;
            /// <summary> End index, equal or greater than start index. </summary>
            public Int16 end_index;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_ITEM = 39;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 37)]
        public struct mavlink_mission_item_t
        {
            /// <summary> PARAM1 / For NAV command MISSIONs: Radius in which the MISSION is accepted as reached, in meters </summary>
            public Single param1;
            /// <summary> PARAM2 / For NAV command MISSIONs: Time that the MAV should stay inside the PARAM1 radius before advancing, in milliseconds </summary>
            public Single param2;
            /// <summary> PARAM3 / For LOITER command MISSIONs: Orbit to circle around the MISSION, in meters. If positive the orbit direction should be clockwise, if negative the orbit direction should be counter-clockwise. </summary>
            public Single param3;
            /// <summary> PARAM4 / For NAV and LOITER command MISSIONs: Yaw orientation in degrees, [0..360] 0 = NORTH </summary>
            public Single param4;
            /// <summary> PARAM5 / local: x position, global: latitude </summary>
            public Single x;
            /// <summary> PARAM6 / y position: global: longitude </summary>
            public Single y;
            /// <summary> PARAM7 / z position: global: altitude </summary>
            public Single z;
            /// <summary> Sequence </summary>
            public UInt16 seq;
            /// <summary> The scheduled action for the MISSION. see MAV_CMD in common.xml MAVLink specs </summary>
            public UInt16 command;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> The coordinate system of the MISSION. see MAV_FRAME in mavlink_types.h </summary>
            public byte frame;
            /// <summary> false:0, true:1 </summary>
            public byte current;
            /// <summary> autocontinue to next wp </summary>
            public byte autocontinue;

        };


        public const byte MAVLINK_MSG_ID_MISSION_REQUEST = 40;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 4)]
        public struct mavlink_mission_request_t
        {
            /// <summary> Sequence </summary>
            public UInt16 seq;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_SET_CURRENT = 41;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 4)]
        public struct mavlink_mission_set_current_t
        {
            /// <summary> Sequence </summary>
            public UInt16 seq;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_CURRENT = 42;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 2)]
        public struct mavlink_mission_current_t
        {
            /// <summary> Sequence </summary>
            public UInt16 seq;

        };


        public const byte MAVLINK_MSG_ID_MISSION_REQUEST_LIST = 43;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 2)]
        public struct mavlink_mission_request_list_t
        {
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_COUNT = 44;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 4)]
        public struct mavlink_mission_count_t
        {
            /// <summary> Number of mission items in the sequence </summary>
            public UInt16 count;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_CLEAR_ALL = 45;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 2)]
        public struct mavlink_mission_clear_all_t
        {
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_MISSION_ITEM_REACHED = 46;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 2)]
        public struct mavlink_mission_item_reached_t
        {
            /// <summary> Sequence </summary>
            public UInt16 seq;

        };


        public const byte MAVLINK_MSG_ID_MISSION_ACK = 47;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 3)]
        public struct mavlink_mission_ack_t
        {
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> See MAV_MISSION_RESULT enum </summary>
            public byte type;

        };


        public const byte MAVLINK_MSG_ID_SET_GPS_GLOBAL_ORIGIN = 48;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 13)]
        public struct mavlink_set_gps_global_origin_t
        {
            /// <summary> global position * 1E7 </summary>
            public Int32 latitude;
            /// <summary> global position * 1E7 </summary>
            public Int32 longitude;
            /// <summary> global position * 1000 </summary>
            public Int32 altitude;
            /// <summary> System ID </summary>
            public byte target_system;

        };


        public const byte MAVLINK_MSG_ID_GPS_GLOBAL_ORIGIN = 49;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 12)]
        public struct mavlink_gps_global_origin_t
        {
            /// <summary> Latitude (WGS84), expressed as * 1E7 </summary>
            public Int32 latitude;
            /// <summary> Longitude (WGS84), expressed as * 1E7 </summary>
            public Int32 longitude;
            /// <summary> Altitude(WGS84), expressed as * 1000 </summary>
            public Int32 altitude;

        };


        public const byte MAVLINK_MSG_ID_SET_LOCAL_POSITION_SETPOINT = 50;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 19)]
        public struct mavlink_set_local_position_setpoint_t
        {
            /// <summary> x position </summary>
            public Single x;
            /// <summary> y position </summary>
            public Single y;
            /// <summary> z position </summary>
            public Single z;
            /// <summary> Desired yaw angle </summary>
            public Single yaw;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> Coordinate frame - valid values are only MAV_FRAME_LOCAL_NED or MAV_FRAME_LOCAL_ENU </summary>
            public byte coordinate_frame;

        };


        public const byte MAVLINK_MSG_ID_LOCAL_POSITION_SETPOINT = 51;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 17)]
        public struct mavlink_local_position_setpoint_t
        {
            /// <summary> x position </summary>
            public Single x;
            /// <summary> y position </summary>
            public Single y;
            /// <summary> z position </summary>
            public Single z;
            /// <summary> Desired yaw angle </summary>
            public Single yaw;
            /// <summary> Coordinate frame - valid values are only MAV_FRAME_LOCAL_NED or MAV_FRAME_LOCAL_ENU </summary>
            public byte coordinate_frame;

        };


        public const byte MAVLINK_MSG_ID_GLOBAL_POSITION_SETPOINT_INT = 52;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 15)]
        public struct mavlink_global_position_setpoint_int_t
        {
            /// <summary> WGS84 Latitude position in degrees * 1E7 </summary>
            public Int32 latitude;
            /// <summary> WGS84 Longitude position in degrees * 1E7 </summary>
            public Int32 longitude;
            /// <summary> WGS84 Altitude in meters * 1000 (positive for up) </summary>
            public Int32 altitude;
            /// <summary> Desired yaw angle in degrees * 100 </summary>
            public Int16 yaw;
            /// <summary> Coordinate frame - valid values are only MAV_FRAME_GLOBAL or MAV_FRAME_GLOBAL_RELATIVE_ALT </summary>
            public byte coordinate_frame;

        };


        public const byte MAVLINK_MSG_ID_SET_GLOBAL_POSITION_SETPOINT_INT = 53;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 15)]
        public struct mavlink_set_global_position_setpoint_int_t
        {
            /// <summary> WGS84 Latitude position in degrees * 1E7 </summary>
            public Int32 latitude;
            /// <summary> WGS84 Longitude position in degrees * 1E7 </summary>
            public Int32 longitude;
            /// <summary> WGS84 Altitude in meters * 1000 (positive for up) </summary>
            public Int32 altitude;
            /// <summary> Desired yaw angle in degrees * 100 </summary>
            public Int16 yaw;
            /// <summary> Coordinate frame - valid values are only MAV_FRAME_GLOBAL or MAV_FRAME_GLOBAL_RELATIVE_ALT </summary>
            public byte coordinate_frame;

        };


        public const byte MAVLINK_MSG_ID_SAFETY_SET_ALLOWED_AREA = 54;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 27)]
        public struct mavlink_safety_set_allowed_area_t
        {
            /// <summary> x position 1 / Latitude 1 </summary>
            public Single p1x;
            /// <summary> y position 1 / Longitude 1 </summary>
            public Single p1y;
            /// <summary> z position 1 / Altitude 1 </summary>
            public Single p1z;
            /// <summary> x position 2 / Latitude 2 </summary>
            public Single p2x;
            /// <summary> y position 2 / Longitude 2 </summary>
            public Single p2y;
            /// <summary> z position 2 / Altitude 2 </summary>
            public Single p2z;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> Coordinate frame, as defined by MAV_FRAME enum in mavlink_types.h. Can be either global, GPS, right-handed with Z axis up or local, right handed, Z axis down. </summary>
            public byte frame;

        };


        public const byte MAVLINK_MSG_ID_SAFETY_ALLOWED_AREA = 55;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 25)]
        public struct mavlink_safety_allowed_area_t
        {
            /// <summary> x position 1 / Latitude 1 </summary>
            public Single p1x;
            /// <summary> y position 1 / Longitude 1 </summary>
            public Single p1y;
            /// <summary> z position 1 / Altitude 1 </summary>
            public Single p1z;
            /// <summary> x position 2 / Latitude 2 </summary>
            public Single p2x;
            /// <summary> y position 2 / Longitude 2 </summary>
            public Single p2y;
            /// <summary> z position 2 / Altitude 2 </summary>
            public Single p2z;
            /// <summary> Coordinate frame, as defined by MAV_FRAME enum in mavlink_types.h. Can be either global, GPS, right-handed with Z axis up or local, right handed, Z axis down. </summary>
            public byte frame;

        };


        public const byte MAVLINK_MSG_ID_SET_ROLL_PITCH_YAW_THRUST = 56;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 18)]
        public struct mavlink_set_roll_pitch_yaw_thrust_t
        {
            /// <summary> Desired roll angle in radians </summary>
            public Single roll;
            /// <summary> Desired pitch angle in radians </summary>
            public Single pitch;
            /// <summary> Desired yaw angle in radians </summary>
            public Single yaw;
            /// <summary> Collective thrust, normalized to 0 .. 1 </summary>
            public Single thrust;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_SET_ROLL_PITCH_YAW_SPEED_THRUST = 57;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 18)]
        public struct mavlink_set_roll_pitch_yaw_speed_thrust_t
        {
            /// <summary> Desired roll angular speed in rad/s </summary>
            public Single roll_speed;
            /// <summary> Desired pitch angular speed in rad/s </summary>
            public Single pitch_speed;
            /// <summary> Desired yaw angular speed in rad/s </summary>
            public Single yaw_speed;
            /// <summary> Collective thrust, normalized to 0 .. 1 </summary>
            public Single thrust;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };


        public const byte MAVLINK_MSG_ID_ROLL_PITCH_YAW_THRUST_SETPOINT = 58;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 20)]
        public struct mavlink_roll_pitch_yaw_thrust_setpoint_t
        {
            /// <summary> Timestamp in milliseconds since system boot </summary>
            public UInt32 time_boot_ms;
            /// <summary> Desired roll angle in radians </summary>
            public Single roll;
            /// <summary> Desired pitch angle in radians </summary>
            public Single pitch;
            /// <summary> Desired yaw angle in radians </summary>
            public Single yaw;
            /// <summary> Collective thrust, normalized to 0 .. 1 </summary>
            public Single thrust;

        };


        public const byte MAVLINK_MSG_ID_ROLL_PITCH_YAW_SPEED_THRUST_SETPOINT = 59;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 20)]
        public struct mavlink_roll_pitch_yaw_speed_thrust_setpoint_t
        {
            /// <summary> Timestamp in milliseconds since system boot </summary>
            public UInt32 time_boot_ms;
            /// <summary> Desired roll angular speed in rad/s </summary>
            public Single roll_speed;
            /// <summary> Desired pitch angular speed in rad/s </summary>
            public Single pitch_speed;
            /// <summary> Desired yaw angular speed in rad/s </summary>
            public Single yaw_speed;
            /// <summary> Collective thrust, normalized to 0 .. 1 </summary>
            public Single thrust;

        };


        public const byte MAVLINK_MSG_ID_SET_QUAD_MOTORS_SETPOINT = 60;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 9)]
        public struct mavlink_set_quad_motors_setpoint_t
        {
            /// <summary> Front motor in + configuration, front left motor in x configuration </summary>
            public UInt16 motor_front_nw;
            /// <summary> Right motor in + configuration, front right motor in x configuration </summary>
            public UInt16 motor_right_ne;
            /// <summary> Back motor in + configuration, back right motor in x configuration </summary>
            public UInt16 motor_back_se;
            /// <summary> Left motor in + configuration, back left motor in x configuration </summary>
            public UInt16 motor_left_sw;
            /// <summary> System ID of the system that should set these motor commands </summary>
            public byte target_system;

        };


        public const byte MAVLINK_MSG_ID_SET_QUAD_SWARM_ROLL_PITCH_YAW_THRUST = 61;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 34)]
        public struct mavlink_set_quad_swarm_roll_pitch_yaw_thrust_t
        {
            /// <summary> Desired roll angle in radians +-PI (+-32767) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public Int16[] roll;
            /// <summary> Desired pitch angle in radians +-PI (+-32767) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public Int16[] pitch;
            /// <summary> Desired yaw angle in radians, scaled to int16 +-PI (+-32767) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public Int16[] yaw;
            /// <summary> Collective thrust, scaled to uint16 (0..65535) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public UInt16[] thrust;
            /// <summary> ID of the quadrotor group (0 - 255, up to 256 groups supported) </summary>
            public byte group;
            /// <summary> ID of the flight mode (0 - 255, up to 256 modes supported) </summary>
            public byte mode;

        };


        public const byte MAVLINK_MSG_ID_NAV_CONTROLLER_OUTPUT = 62;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 26)]
        public struct mavlink_nav_controller_output_t
        {
            /// <summary> Current desired roll in degrees </summary>
            public Single nav_roll;
            /// <summary> Current desired pitch in degrees </summary>
            public Single nav_pitch;
            /// <summary> Current altitude error in meters </summary>
            public Single alt_error;
            /// <summary> Current airspeed error in meters/second </summary>
            public Single aspd_error;
            /// <summary> Current crosstrack error on x-y plane in meters </summary>
            public Single xtrack_error;
            /// <summary> Current desired heading in degrees </summary>
            public Int16 nav_bearing;
            /// <summary> Bearing to current MISSION/target in degrees </summary>
            public Int16 target_bearing;
            /// <summary> Distance to active MISSION in meters </summary>
            public UInt16 wp_dist;

        };


        public const byte MAVLINK_MSG_ID_SET_QUAD_SWARM_LED_ROLL_PITCH_YAW_THRUST = 63;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 46)]
        public struct mavlink_set_quad_swarm_led_roll_pitch_yaw_thrust_t
        {
            /// <summary> Desired roll angle in radians +-PI (+-32767) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public Int16[] roll;
            /// <summary> Desired pitch angle in radians +-PI (+-32767) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public Int16[] pitch;
            /// <summary> Desired yaw angle in radians, scaled to int16 +-PI (+-32767) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public Int16[] yaw;
            /// <summary> Collective thrust, scaled to uint16 (0..65535) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public UInt16[] thrust;
            /// <summary> ID of the quadrotor group (0 - 255, up to 256 groups supported) </summary>
            public byte group;
            /// <summary> ID of the flight mode (0 - 255, up to 256 modes supported) </summary>
            public byte mode;
            /// <summary> RGB red channel (0-255) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public byte[] led_red;
            /// <summary> RGB green channel (0-255) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public byte[] led_blue;
            /// <summary> RGB blue channel (0-255) </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public byte[] led_green;

        };


        public const byte MAVLINK_MSG_ID_STATE_CORRECTION = 64;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 36)]
        public struct mavlink_state_correction_t
        {
            /// <summary> x position error </summary>
            public Single xErr;
            /// <summary> y position error </summary>
            public Single yErr;
            /// <summary> z position error </summary>
            public Single zErr;
            /// <summary> roll error (radians) </summary>
            public Single rollErr;
            /// <summary> pitch error (radians) </summary>
            public Single pitchErr;
            /// <summary> yaw error (radians) </summary>
            public Single yawErr;
            /// <summary> x velocity </summary>
            public Single vxErr;
            /// <summary> y velocity </summary>
            public Single vyErr;
            /// <summary> z velocity </summary>
            public Single vzErr;

        };


        public const byte MAVLINK_MSG_ID_REQUEST_DATA_STREAM = 66;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 6)]
        public struct mavlink_request_data_stream_t
        {
            /// <summary> The requested interval between two messages of this type </summary>
            public UInt16 req_message_rate;
            /// <summary> The target requested to send the message stream. </summary>
            public byte target_system;
            /// <summary> The target requested to send the message stream. </summary>
            public byte target_component;
            /// <summary> The ID of the requested data stream </summary>
            public byte req_stream_id;
            /// <summary> 1 to start sending, 0 to stop sending. </summary>
            public byte start_stop;

        };


        public const byte MAVLINK_MSG_ID_DATA_STREAM = 67;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 4)]
        public struct mavlink_data_stream_t
        {
            /// <summary> The requested interval between two messages of this type </summary>
            public UInt16 message_rate;
            /// <summary> The ID of the requested data stream </summary>
            public byte stream_id;
            /// <summary> 1 stream is enabled, 0 stream is stopped. </summary>
            public byte on_off;

        };


        public const byte MAVLINK_MSG_ID_MANUAL_CONTROL = 69;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 11)]
        public struct mavlink_manual_control_t
        {
            /// <summary> X-axis, normalized to the range [-1000,1000]. A value of INT16_MAX indicates that this axis is invalid. Generally corresponds to forward(1000)-backward(-1000) movement on a joystick and the pitch of a vehicle. </summary>
            public Int16 x;
            /// <summary> Y-axis, normalized to the range [-1000,1000]. A value of INT16_MAX indicates that this axis is invalid. Generally corresponds to left(-1000)-right(1000) movement on a joystick and the roll of a vehicle. </summary>
            public Int16 y;
            /// <summary> Z-axis, normalized to the range [-1000,1000]. A value of INT16_MAX indicates that this axis is invalid. Generally corresponds to a separate slider movement with maximum being 1000 and minimum being -1000 on a joystick and the thrust of a vehicle. </summary>
            public Int16 z;
            /// <summary> R-axis, normalized to the range [-1000,1000]. A value of INT16_MAX indicates that this axis is invalid. Generally corresponds to a twisting of the joystick, with counter-clockwise being 1000 and clockwise being -1000, and the yaw of a vehicle. </summary>
            public Int16 r;
            /// <summary> A bitfield corresponding to the joystick buttons' current state, 1 for pressed, 0 for released. The lowest bit corresponds to Button 1. </summary>
            public UInt16 buttons;
            /// <summary> The system to be controlled. </summary>
            public byte target;

        };


        public const byte MAVLINK_MSG_ID_RC_CHANNELS_OVERRIDE = 70;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 18)]
        public struct mavlink_rc_channels_override_t
        {
            /// <summary> RC channel 1 value, in microseconds </summary>
            public UInt16 chan1_raw;
            /// <summary> RC channel 2 value, in microseconds </summary>
            public UInt16 chan2_raw;
            /// <summary> RC channel 3 value, in microseconds </summary>
            public UInt16 chan3_raw;
            /// <summary> RC channel 4 value, in microseconds </summary>
            public UInt16 chan4_raw;
            /// <summary> RC channel 5 value, in microseconds </summary>
            public UInt16 chan5_raw;
            /// <summary> RC channel 6 value, in microseconds </summary>
            public UInt16 chan6_raw;
            /// <summary> RC channel 7 value, in microseconds </summary>
            public UInt16 chan7_raw;
            /// <summary> RC channel 8 value, in microseconds </summary>
            public UInt16 chan8_raw;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;

        };

        public const byte MAVLINK_MSG_ID_MOBILE_CONTROL = 200;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 26)]
        public struct mavlink_rc_mobile_control_t
        {
            /// <summary> Change YAW </summary>
            public Single Yaw;
            /// <summary> Change Alt </summary>
            public Single alt;
            /// <summary> RC channel 1 value, in microseconds </summary>
            public UInt16 chan1_raw;
            /// <summary> RC channel 2 value, in microseconds </summary>
            public UInt16 chan2_raw;
            /// <summary> RC channel 3 value, in microseconds </summary>
            public UInt16 chan3_raw;
            /// <summary> RC channel 4 value, in microseconds </summary>
            public UInt16 chan4_raw;
            /// <summary> RC channel 5 value, in microseconds </summary>
            public UInt16 chan5_raw;
            /// <summary> RC channel 6 value, in microseconds </summary>
            public UInt16 chan6_raw;
            /// <summary> RC channel 7 value, in microseconds </summary>
            public UInt16 chan7_raw;
            /// <summary> RC channel 8 value, in microseconds </summary>
            public UInt16 chan8_raw;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
        };

        public const byte MAVLINK_MSG_ID_VFR_HUD = 74;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 20)]
        public struct mavlink_vfr_hud_t
        {
            /// <summary> Current airspeed in m/s </summary>
            public Single airspeed;
            /// <summary> Current ground speed in m/s </summary>
            public Single groundspeed;
            /// <summary> Current altitude (MSL), in meters </summary>
            public Single alt;
            /// <summary> Current climb rate in meters/second </summary>
            public Single climb;
            /// <summary> Current heading in degrees, in compass units (0..360, 0=north) </summary>
            public Int16 heading;
            /// <summary> Current throttle setting in integer percent, 0 to 100 </summary>
            public UInt16 throttle;

        };


        public const byte MAVLINK_MSG_ID_COMMAND_LONG = 76;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 33)]
        public struct mavlink_command_long_t
        {
            /// <summary> Parameter 1, as defined by MAV_CMD enum. </summary>
            public Single param1;
            /// <summary> Parameter 2, as defined by MAV_CMD enum. </summary>
            public Single param2;
            /// <summary> Parameter 3, as defined by MAV_CMD enum. </summary>
            public Single param3;
            /// <summary> Parameter 4, as defined by MAV_CMD enum. </summary>
            public Single param4;
            /// <summary> Parameter 5, as defined by MAV_CMD enum. </summary>
            public Single param5;
            /// <summary> Parameter 6, as defined by MAV_CMD enum. </summary>
            public Single param6;
            /// <summary> Parameter 7, as defined by MAV_CMD enum. </summary>
            public Single param7;
            /// <summary> Command ID, as defined by MAV_CMD enum. </summary>
            public UInt16 command;
            /// <summary> System which should execute the command </summary>
            public byte target_system;
            /// <summary> Component which should execute the command, 0 for all components </summary>
            public byte target_component;
            /// <summary> 0: First transmission of this command. 1-255: Confirmation transmissions (e.g. for kill command) </summary>
            public byte confirmation;

        };


        public const byte MAVLINK_MSG_ID_COMMAND_ACK = 77;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 3)]
        public struct mavlink_command_ack_t
        {
            /// <summary> Command ID, as defined by MAV_CMD enum. </summary>
            public UInt16 command;
            /// <summary> See MAV_RESULT enum </summary>
            public byte result;

        };


        public const byte MAVLINK_MSG_ID_ROLL_PITCH_YAW_RATES_THRUST_SETPOINT = 80;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 20)]
        public struct mavlink_roll_pitch_yaw_rates_thrust_setpoint_t
        {
            /// <summary> Timestamp in milliseconds since system boot </summary>
            public UInt32 time_boot_ms;
            /// <summary> Desired roll rate in radians per second </summary>
            public Single roll_rate;
            /// <summary> Desired pitch rate in radians per second </summary>
            public Single pitch_rate;
            /// <summary> Desired yaw rate in radians per second </summary>
            public Single yaw_rate;
            /// <summary> Collective thrust, normalized to 0 .. 1 </summary>
            public Single thrust;

        };


        public const byte MAVLINK_MSG_ID_MANUAL_SETPOINT = 81;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 22)]
        public struct mavlink_manual_setpoint_t
        {
            /// <summary> Timestamp in milliseconds since system boot </summary>
            public UInt32 time_boot_ms;
            /// <summary> Desired roll rate in radians per second </summary>
            public Single roll;
            /// <summary> Desired pitch rate in radians per second </summary>
            public Single pitch;
            /// <summary> Desired yaw rate in radians per second </summary>
            public Single yaw;
            /// <summary> Collective thrust, normalized to 0 .. 1 </summary>
            public Single thrust;
            /// <summary> Flight mode switch position, 0.. 255 </summary>
            public byte mode_switch;
            /// <summary> Override mode switch position, 0.. 255 </summary>
            public byte manual_override_switch;

        };


        public const byte MAVLINK_MSG_ID_LOCAL_POSITION_NED_SYSTEM_GLOBAL_OFFSET = 89;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 28)]
        public struct mavlink_local_position_ned_system_global_offset_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> X Position </summary>
            public Single x;
            /// <summary> Y Position </summary>
            public Single y;
            /// <summary> Z Position </summary>
            public Single z;
            /// <summary> Roll </summary>
            public Single roll;
            /// <summary> Pitch </summary>
            public Single pitch;
            /// <summary> Yaw </summary>
            public Single yaw;

        };


        public const byte MAVLINK_MSG_ID_HIL_STATE = 90;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 56)]
        public struct mavlink_hil_state_t
        {
            /// <summary> Timestamp (microseconds since UNIX epoch or microseconds since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> Roll angle (rad) </summary>
            public Single roll;
            /// <summary> Pitch angle (rad) </summary>
            public Single pitch;
            /// <summary> Yaw angle (rad) </summary>
            public Single yaw;
            /// <summary> Roll angular speed (rad/s) </summary>
            public Single rollspeed;
            /// <summary> Pitch angular speed (rad/s) </summary>
            public Single pitchspeed;
            /// <summary> Yaw angular speed (rad/s) </summary>
            public Single yawspeed;
            /// <summary> Latitude, expressed as * 1E7 </summary>
            public Int32 lat;
            /// <summary> Longitude, expressed as * 1E7 </summary>
            public Int32 lon;
            /// <summary> Altitude in meters, expressed as * 1000 (millimeters) </summary>
            public Int32 alt;
            /// <summary> Ground X Speed (Latitude), expressed as m/s * 100 </summary>
            public Int16 vx;
            /// <summary> Ground Y Speed (Longitude), expressed as m/s * 100 </summary>
            public Int16 vy;
            /// <summary> Ground Z Speed (Altitude), expressed as m/s * 100 </summary>
            public Int16 vz;
            /// <summary> X acceleration (mg) </summary>
            public Int16 xacc;
            /// <summary> Y acceleration (mg) </summary>
            public Int16 yacc;
            /// <summary> Z acceleration (mg) </summary>
            public Int16 zacc;

        };


        public const byte MAVLINK_MSG_ID_HIL_CONTROLS = 91;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 42)]
        public struct mavlink_hil_controls_t
        {
            /// <summary> Timestamp (microseconds since UNIX epoch or microseconds since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> Control output -1 .. 1 </summary>
            public Single roll_ailerons;
            /// <summary> Control output -1 .. 1 </summary>
            public Single pitch_elevator;
            /// <summary> Control output -1 .. 1 </summary>
            public Single yaw_rudder;
            /// <summary> Throttle 0 .. 1 </summary>
            public Single throttle;
            /// <summary> Aux 1, -1 .. 1 </summary>
            public Single aux1;
            /// <summary> Aux 2, -1 .. 1 </summary>
            public Single aux2;
            /// <summary> Aux 3, -1 .. 1 </summary>
            public Single aux3;
            /// <summary> Aux 4, -1 .. 1 </summary>
            public Single aux4;
            /// <summary> System mode (MAV_MODE) </summary>
            public byte mode;
            /// <summary> Navigation mode (MAV_NAV_MODE) </summary>
            public byte nav_mode;

        };


        public const byte MAVLINK_MSG_ID_HIL_RC_INPUTS_RAW = 92;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 33)]
        public struct mavlink_hil_rc_inputs_raw_t
        {
            /// <summary> Timestamp (microseconds since UNIX epoch or microseconds since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> RC channel 1 value, in microseconds </summary>
            public UInt16 chan1_raw;
            /// <summary> RC channel 2 value, in microseconds </summary>
            public UInt16 chan2_raw;
            /// <summary> RC channel 3 value, in microseconds </summary>
            public UInt16 chan3_raw;
            /// <summary> RC channel 4 value, in microseconds </summary>
            public UInt16 chan4_raw;
            /// <summary> RC channel 5 value, in microseconds </summary>
            public UInt16 chan5_raw;
            /// <summary> RC channel 6 value, in microseconds </summary>
            public UInt16 chan6_raw;
            /// <summary> RC channel 7 value, in microseconds </summary>
            public UInt16 chan7_raw;
            /// <summary> RC channel 8 value, in microseconds </summary>
            public UInt16 chan8_raw;
            /// <summary> RC channel 9 value, in microseconds </summary>
            public UInt16 chan9_raw;
            /// <summary> RC channel 10 value, in microseconds </summary>
            public UInt16 chan10_raw;
            /// <summary> RC channel 11 value, in microseconds </summary>
            public UInt16 chan11_raw;
            /// <summary> RC channel 12 value, in microseconds </summary>
            public UInt16 chan12_raw;
            /// <summary> Receive signal strength indicator, 0: 0%, 255: 100% </summary>
            public byte rssi;

        };


        public const byte MAVLINK_MSG_ID_OPTICAL_FLOW = 100;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 26)]
        public struct mavlink_optical_flow_t
        {
            /// <summary> Timestamp (UNIX) </summary>
            public UInt64 time_usec;
            /// <summary> Flow in meters in x-sensor direction, angular-speed compensated </summary>
            public Single flow_comp_m_x;
            /// <summary> Flow in meters in y-sensor direction, angular-speed compensated </summary>
            public Single flow_comp_m_y;
            /// <summary> Ground distance in meters. Positive value: distance known. Negative value: Unknown distance </summary>
            public Single ground_distance;
            /// <summary> Flow in pixels in x-sensor direction </summary>
            public Int16 flow_x;
            /// <summary> Flow in pixels in y-sensor direction </summary>
            public Int16 flow_y;
            /// <summary> Sensor ID </summary>
            public byte sensor_id;
            /// <summary> Optical flow quality / confidence. 0: bad, 255: maximum quality </summary>
            public byte quality;

        };


        public const byte MAVLINK_MSG_ID_GLOBAL_VISION_POSITION_ESTIMATE = 101;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 32)]
        public struct mavlink_global_vision_position_estimate_t
        {
            /// <summary> Timestamp (microseconds, synced to UNIX time or since system boot) </summary>
            public UInt64 usec;
            /// <summary> Global X position </summary>
            public Single x;
            /// <summary> Global Y position </summary>
            public Single y;
            /// <summary> Global Z position </summary>
            public Single z;
            /// <summary> Roll angle in rad </summary>
            public Single roll;
            /// <summary> Pitch angle in rad </summary>
            public Single pitch;
            /// <summary> Yaw angle in rad </summary>
            public Single yaw;

        };


        public const byte MAVLINK_MSG_ID_VISION_POSITION_ESTIMATE = 102;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 32)]
        public struct mavlink_vision_position_estimate_t
        {
            /// <summary> Timestamp (microseconds, synced to UNIX time or since system boot) </summary>
            public UInt64 usec;
            /// <summary> Global X position </summary>
            public Single x;
            /// <summary> Global Y position </summary>
            public Single y;
            /// <summary> Global Z position </summary>
            public Single z;
            /// <summary> Roll angle in rad </summary>
            public Single roll;
            /// <summary> Pitch angle in rad </summary>
            public Single pitch;
            /// <summary> Yaw angle in rad </summary>
            public Single yaw;

        };


        public const byte MAVLINK_MSG_ID_VISION_SPEED_ESTIMATE = 103;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 20)]
        public struct mavlink_vision_speed_estimate_t
        {
            /// <summary> Timestamp (microseconds, synced to UNIX time or since system boot) </summary>
            public UInt64 usec;
            /// <summary> Global X speed </summary>
            public Single x;
            /// <summary> Global Y speed </summary>
            public Single y;
            /// <summary> Global Z speed </summary>
            public Single z;

        };


        public const byte MAVLINK_MSG_ID_VICON_POSITION_ESTIMATE = 104;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 32)]
        public struct mavlink_vicon_position_estimate_t
        {
            /// <summary> Timestamp (microseconds, synced to UNIX time or since system boot) </summary>
            public UInt64 usec;
            /// <summary> Global X position </summary>
            public Single x;
            /// <summary> Global Y position </summary>
            public Single y;
            /// <summary> Global Z position </summary>
            public Single z;
            /// <summary> Roll angle in rad </summary>
            public Single roll;
            /// <summary> Pitch angle in rad </summary>
            public Single pitch;
            /// <summary> Yaw angle in rad </summary>
            public Single yaw;

        };


        public const byte MAVLINK_MSG_ID_HIGHRES_IMU = 105;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 62)]
        public struct mavlink_highres_imu_t
        {
            /// <summary> Timestamp (microseconds, synced to UNIX time or since system boot) </summary>
            public UInt64 time_usec;
            /// <summary> X acceleration (m/s^2) </summary>
            public Single xacc;
            /// <summary> Y acceleration (m/s^2) </summary>
            public Single yacc;
            /// <summary> Z acceleration (m/s^2) </summary>
            public Single zacc;
            /// <summary> Angular speed around X axis (rad / sec) </summary>
            public Single xgyro;
            /// <summary> Angular speed around Y axis (rad / sec) </summary>
            public Single ygyro;
            /// <summary> Angular speed around Z axis (rad / sec) </summary>
            public Single zgyro;
            /// <summary> X Magnetic field (Gauss) </summary>
            public Single xmag;
            /// <summary> Y Magnetic field (Gauss) </summary>
            public Single ymag;
            /// <summary> Z Magnetic field (Gauss) </summary>
            public Single zmag;
            /// <summary> Absolute pressure in millibar </summary>
            public Single abs_pressure;
            /// <summary> Differential pressure in millibar </summary>
            public Single diff_pressure;
            /// <summary> Altitude calculated from pressure </summary>
            public Single pressure_alt;
            /// <summary> Temperature in degrees celsius </summary>
            public Single temperature;
            /// <summary> Bitmask for fields that have updated since last message, bit 0 = xacc, bit 12: temperature </summary>
            public UInt16 fields_updated;

        };


        public const byte MAVLINK_MSG_ID_FILE_TRANSFER_START = 110;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 254)]
        public struct mavlink_file_transfer_start_t
        {
            /// <summary> Unique transfer ID </summary>
            public UInt64 transfer_uid;
            /// <summary> File size in bytes </summary>
            public UInt32 file_size;
            /// <summary> Destination path </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 240)]
            public byte[] dest_path;
            /// <summary> Transfer direction: 0: from requester, 1: to requester </summary>
            public byte direction;
            /// <summary> RESERVED </summary>
            public byte flags;

        };


        public const byte MAVLINK_MSG_ID_FILE_TRANSFER_DIR_LIST = 111;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 249)]
        public struct mavlink_file_transfer_dir_list_t
        {
            /// <summary> Unique transfer ID </summary>
            public UInt64 transfer_uid;
            /// <summary> Directory path to list </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 240)]
            public byte[] dir_path;
            /// <summary> RESERVED </summary>
            public byte flags;

        };


        public const byte MAVLINK_MSG_ID_FILE_TRANSFER_RES = 112;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 9)]
        public struct mavlink_file_transfer_res_t
        {
            /// <summary> Unique transfer ID </summary>
            public UInt64 transfer_uid;
            /// <summary> 0: OK, 1: not permitted, 2: bad path / file name, 3: no space left on device </summary>
            public byte result;

        };


        public const byte MAVLINK_MSG_ID_BATTERY_STATUS = 147;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 16)]
        public struct mavlink_battery_status_t
        {
            /// <summary> Battery voltage of cell 1, in millivolts (1 = 1 millivolt) </summary>
            public UInt16 voltage_cell_1;
            /// <summary> Battery voltage of cell 2, in millivolts (1 = 1 millivolt), -1: no cell </summary>
            public UInt16 voltage_cell_2;
            /// <summary> Battery voltage of cell 3, in millivolts (1 = 1 millivolt), -1: no cell </summary>
            public UInt16 voltage_cell_3;
            /// <summary> Battery voltage of cell 4, in millivolts (1 = 1 millivolt), -1: no cell </summary>
            public UInt16 voltage_cell_4;
            /// <summary> Battery voltage of cell 5, in millivolts (1 = 1 millivolt), -1: no cell </summary>
            public UInt16 voltage_cell_5;
            /// <summary> Battery voltage of cell 6, in millivolts (1 = 1 millivolt), -1: no cell </summary>
            public UInt16 voltage_cell_6;
            /// <summary> Battery current, in 10*milliamperes (1 = 10 milliampere), -1: autopilot does not measure the current </summary>
            public Int16 current_battery;
            /// <summary> Accupack ID </summary>
            public byte accu_id;
            /// <summary> Remaining battery energy: (0%: 0, 100%: 100), -1: autopilot does not estimate the remaining battery </summary>
            public byte battery_remaining;

        };


        public const byte MAVLINK_MSG_ID_SETPOINT_8DOF = 148;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 33)]
        public struct mavlink_setpoint_8dof_t
        {
            /// <summary> Value 1 </summary>
            public Single val1;
            /// <summary> Value 2 </summary>
            public Single val2;
            /// <summary> Value 3 </summary>
            public Single val3;
            /// <summary> Value 4 </summary>
            public Single val4;
            /// <summary> Value 5 </summary>
            public Single val5;
            /// <summary> Value 6 </summary>
            public Single val6;
            /// <summary> Value 7 </summary>
            public Single val7;
            /// <summary> Value 8 </summary>
            public Single val8;
            /// <summary> System ID </summary>
            public byte target_system;

        };


        public const byte MAVLINK_MSG_ID_SETPOINT_6DOF = 149;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 25)]
        public struct mavlink_setpoint_6dof_t
        {
            /// <summary> Translational Component in x </summary>
            public Single trans_x;
            /// <summary> Translational Component in y </summary>
            public Single trans_y;
            /// <summary> Translational Component in z </summary>
            public Single trans_z;
            /// <summary> Rotational Component in x </summary>
            public Single rot_x;
            /// <summary> Rotational Component in y </summary>
            public Single rot_y;
            /// <summary> Rotational Component in z </summary>
            public Single rot_z;
            /// <summary> System ID </summary>
            public byte target_system;

        };


        public const byte MAVLINK_MSG_ID_MEMORY_VECT = 249;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 36)]
        public struct mavlink_memory_vect_t
        {
            /// <summary> Starting address of the debug variables </summary>
            public UInt16 address;
            /// <summary> Version code of the type variable. 0=unknown, type ignored and assumed int16_t. 1=as below </summary>
            public byte ver;
            /// <summary> Type code of the memory variables. for ver = 1: 0=16 x int16_t, 1=16 x uint16_t, 2=16 x Q15, 3=16 x 1Q14 </summary>
            public byte type;
            /// <summary> Memory contents at specified address </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
            public byte[] value;

        };


        public const byte MAVLINK_MSG_ID_DEBUG_VECT = 250;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 30)]
        public struct mavlink_debug_vect_t
        {
            /// <summary> Timestamp </summary>
            public UInt64 time_usec;
            /// <summary> x </summary>
            public Single x;
            /// <summary> y </summary>
            public Single y;
            /// <summary> z </summary>
            public Single z;
            /// <summary> Name </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
            public byte[] name;

        };


        public const byte MAVLINK_MSG_ID_NAMED_VALUE_FLOAT = 251;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 18)]
        public struct mavlink_named_value_float_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> Floating point value </summary>
            public Single value;
            /// <summary> Name of the debug variable </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
            public byte[] name;

        };


        public const byte MAVLINK_MSG_ID_NAMED_VALUE_INT = 252;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 18)]
        public struct mavlink_named_value_int_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> Signed integer value </summary>
            public Int32 value;
            /// <summary> Name of the debug variable </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
            public byte[] name;

        };


        public const byte MAVLINK_MSG_ID_STATUSTEXT = 253;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 51)]
        public struct mavlink_statustext_t
        {
            /// <summary> Severity of status. Relies on the definitions within RFC-5424. See enum MAV_SEVERITY. </summary>
            public byte severity;
            /// <summary> Status text message, without null termination character </summary>
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 50)]
            public byte[] text;

        };


        public const byte MAVLINK_MSG_ID_DEBUG = 254;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 9)]
        public struct mavlink_debug_t
        {
            /// <summary> Timestamp (milliseconds since system boot) </summary>
            public UInt32 time_boot_ms;
            /// <summary> DEBUG value </summary>
            public Single value;
            /// <summary> index of debug variable </summary>
            public byte ind;

        };

        public const byte MAVLINK_MSG_ID_RALLY_POINT = 175;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 19)]
        public struct mavlink_rally_point_t
        {
            /// <summary> Latitude of point in degrees * 1E7 </summary>
            public Int32 lat;
            /// <summary> Longitude of point in degrees * 1E7 </summary>
            public Int32 lng;
            /// <summary> Transit / loiter altitude in meters relative to home </summary>
            public Int16 alt;
            /// <summary> Break altitude in meters relative to home </summary>
            public Int16 break_alt;
            /// <summary> Heading to aim for when landing. In centi-degrees. </summary>
            public UInt16 land_dir;
            /// <summary> System ID </summary>
            public byte target_system;
            /// <summary> Component ID </summary>
            public byte target_component;
            /// <summary> point index (first point is 0) </summary>
            public byte idx;
            /// <summary> total number of points (for sanity checking) </summary>
            public byte count;
            /// <summary> See RALLY_FLAGS enum for definition of the bitmask. </summary>
            public byte flags;

        };

        public const byte MAVLINK_MSG_ID_SET_PAIR = 201;
        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 9)]
        public struct mavlink_set_pair_t
        {
            /// <summary> 1 -- Start Pair  0 -- Stop Pair  || 1 -- Pair success 0 -- Pair fail </summary>
            public byte pair;
            public int TxID;
            public int RxID;
        };

    }
    //#endif
}
