ardupilot/libraries/AP_Mission/AP_Mission.h

705 lines
29 KiB
C++

/// @file AP_Mission.h
/// @brief Handles the MAVLINK command mission stack. Reads and writes mission to storage.
/*
* The AP_Mission library:
* - responsible for managing a list of commands made up of "nav", "do" and "conditional" commands
* - reads and writes the mission commands to storage.
* - provides easy access to current, previous and upcoming waypoints
* - calls main program's command execution and verify functions.
* - accounts for the DO_JUMP command
*
*/
#pragma once
#include <AP_HAL/AP_HAL.h>
#include <GCS_MAVLink/GCS_MAVLink.h>
#include <AP_Math/AP_Math.h>
#include <AP_Common/AP_Common.h>
#include <AP_Common/Location.h>
#include <AP_Param/AP_Param.h>
#include <StorageManager/StorageManager.h>
// definitions
#define AP_MISSION_EEPROM_VERSION 0x65AE // version number stored in first four bytes of eeprom. increment this by one when eeprom format is changed
#define AP_MISSION_EEPROM_COMMAND_SIZE 15 // size in bytes of all mission commands
#define AP_MISSION_MAX_NUM_DO_JUMP_COMMANDS 15 // allow up to 15 do-jump commands
#define AP_MISSION_JUMP_REPEAT_FOREVER -1 // when do-jump command's repeat count is -1 this means endless repeat
#define AP_MISSION_CMD_ID_NONE 0 // mavlink cmd id of zero means invalid or missing command
#define AP_MISSION_CMD_INDEX_NONE 65535 // command index of 65535 means invalid or missing command
#define AP_MISSION_JUMP_TIMES_MAX 32767 // maximum number of times a jump can be executed. Used when jump tracking fails (i.e. when too many jumps in mission)
#define AP_MISSION_FIRST_REAL_COMMAND 1 // command #0 reserved to hold home position
#define AP_MISSION_RESTART_DEFAULT 0 // resume the mission from the last command run by default
#define AP_MISSION_OPTIONS_DEFAULT 0 // Do not clear the mission when rebooting
#define AP_MISSION_MASK_MISSION_CLEAR (1<<0) // If set then Clear the mission on boot
#define AP_MISSION_MASK_DIST_TO_LAND_CALC (1<<1) // Allow distance to best landing calculation to be run on failsafe
#define AP_MISSION_MASK_CONTINUE_AFTER_LAND (1<<2) // Allow mission to continue after land
#define AP_MISSION_MAX_WP_HISTORY 7 // The maximum number of previous wp commands that will be stored from the active missions history
#define LAST_WP_PASSED (AP_MISSION_MAX_WP_HISTORY-2)
/// @class AP_Mission
/// @brief Object managing Mission
class AP_Mission
{
public:
// jump command structure
struct PACKED Jump_Command {
uint16_t target; // target command id
int16_t num_times; // num times to repeat. -1 = repeat forever
};
// condition delay command structure
struct PACKED Conditional_Delay_Command {
float seconds; // period of delay in seconds
};
// condition delay command structure
struct PACKED Conditional_Distance_Command {
float meters; // distance from next waypoint in meters
};
// condition yaw command structure
struct PACKED Yaw_Command {
float angle_deg; // target angle in degrees (0=north, 90=east)
float turn_rate_dps; // turn rate in degrees / second (0=use default)
int8_t direction; // -1 = ccw, +1 = cw
uint8_t relative_angle; // 0 = absolute angle, 1 = relative angle
};
// change speed command structure
struct PACKED Change_Speed_Command {
uint8_t speed_type; // 0=airspeed, 1=ground speed
float target_ms; // target speed in m/s, -1 means no change
float throttle_pct; // throttle as a percentage (i.e. 1 ~ 100), 0 means no change
};
// set relay command structure
struct PACKED Set_Relay_Command {
uint8_t num; // relay number from 1 to 4
uint8_t state; // on = 3.3V or 5V (depending upon board), off = 0V. only used for do-set-relay, not for do-repeat-relay
};
// repeat relay command structure
struct PACKED Repeat_Relay_Command {
uint8_t num; // relay number from 1 to 4
int16_t repeat_count; // number of times to trigger the relay
float cycle_time; // cycle time in seconds (the time between peaks or the time the relay is on and off for each cycle?)
};
// set servo command structure
struct PACKED Set_Servo_Command {
uint8_t channel; // servo channel
uint16_t pwm; // pwm value for servo
};
// repeat servo command structure
struct PACKED Repeat_Servo_Command {
uint8_t channel; // servo channel
uint16_t pwm; // pwm value for servo
int16_t repeat_count; // number of times to move the servo (returns to trim in between)
float cycle_time; // cycle time in seconds (the time between peaks or the time the servo is at the specified pwm value for each cycle?)
};
// mount control command structure
struct PACKED Mount_Control {
float pitch; // pitch angle in degrees
float roll; // roll angle in degrees
float yaw; // yaw angle (relative to vehicle heading) in degrees
};
// digicam control command structure
struct PACKED Digicam_Configure {
uint8_t shooting_mode; // ProgramAuto = 1, AV = 2, TV = 3, Man=4, IntelligentAuto=5, SuperiorAuto=6
uint16_t shutter_speed;
uint8_t aperture; // F stop number * 10
uint16_t ISO; // 80, 100, 200, etc
uint8_t exposure_type;
uint8_t cmd_id;
float engine_cutoff_time; // seconds
};
// digicam control command structure
struct PACKED Digicam_Control {
uint8_t session; // 1 = on, 0 = off
uint8_t zoom_pos;
int8_t zoom_step; // +1 = zoom in, -1 = zoom out
uint8_t focus_lock;
uint8_t shooting_cmd;
uint8_t cmd_id;
};
// set cam trigger distance command structure
struct PACKED Cam_Trigg_Distance {
float meters; // distance
uint8_t trigger; // triggers one image capture immediately
};
// gripper command structure
struct PACKED Gripper_Command {
uint8_t num; // gripper number
uint8_t action; // action (0 = release, 1 = grab)
};
// high altitude balloon altitude wait
struct PACKED Altitude_Wait {
float altitude; // meters
float descent_rate; // m/s
uint8_t wiggle_time; // seconds
};
// nav guided command
struct PACKED Guided_Limits_Command {
// max time is held in p1 field
float alt_min; // min alt below which the command will be aborted. 0 for no lower alt limit
float alt_max; // max alt above which the command will be aborted. 0 for no upper alt limit
float horiz_max; // max horizontal distance the vehicle can move before the command will be aborted. 0 for no horizontal limit
};
// do VTOL transition
struct PACKED Do_VTOL_Transition {
uint8_t target_state;
};
// navigation delay command structure
struct PACKED Navigation_Delay_Command {
float seconds; // period of delay in seconds
int8_t hour_utc; // absolute time's hour (utc)
int8_t min_utc; // absolute time's min (utc)
int8_t sec_utc; // absolute time's sec (utc)
};
// DO_ENGINE_CONTROL support
struct PACKED Do_Engine_Control {
bool start_control; // start or stop engine
bool cold_start; // use cold start procedure
uint16_t height_delay_cm; // height delay for start
};
// NAV_SET_YAW_SPEED support
struct PACKED Set_Yaw_Speed {
float angle_deg; // target angle in degrees (0=north, 90=east)
float speed; // speed in meters/second
uint8_t relative_angle; // 0 = absolute angle, 1 = relative angle
};
// winch command structure
struct PACKED Winch_Command {
uint8_t num; // winch number
uint8_t action; // action (0 = relax, 1 = length control, 2 = rate control)
float release_length; // cable distance to unwind in meters, negative numbers to wind in cable
float release_rate; // release rate in meters/second
};
union Content {
// jump structure
Jump_Command jump;
// conditional delay
Conditional_Delay_Command delay;
// conditional distance
Conditional_Distance_Command distance;
// conditional yaw
Yaw_Command yaw;
// change speed
Change_Speed_Command speed;
// do-set-relay
Set_Relay_Command relay;
// do-repeat-relay
Repeat_Relay_Command repeat_relay;
// do-set-servo
Set_Servo_Command servo;
// do-repeate-servo
Repeat_Servo_Command repeat_servo;
// mount control
Mount_Control mount_control;
// camera configure
Digicam_Configure digicam_configure;
// camera control
Digicam_Control digicam_control;
// cam trigg distance
Cam_Trigg_Distance cam_trigg_dist;
// do-gripper
Gripper_Command gripper;
// do-guided-limits
Guided_Limits_Command guided_limits;
// high altitude balloon altitude wait
Altitude_Wait altitude_wait;
// do vtol transition
Do_VTOL_Transition do_vtol_transition;
// DO_ENGINE_CONTROL
Do_Engine_Control do_engine_control;
// navigation delay
Navigation_Delay_Command nav_delay;
// NAV_SET_YAW_SPEED support
Set_Yaw_Speed set_yaw_speed;
// do-winch
Winch_Command winch;
// location
Location location{}; // Waypoint location
};
// command structure
struct Mission_Command {
uint16_t index; // this commands position in the command list
uint16_t id; // mavlink command id
uint16_t p1; // general purpose parameter 1
Content content;
// return a human-readable interpretation of the ID stored in this command
const char *type() const;
};
// main program function pointers
FUNCTOR_TYPEDEF(mission_cmd_fn_t, bool, const Mission_Command&);
FUNCTOR_TYPEDEF(mission_complete_fn_t, void);
// constructor
AP_Mission(mission_cmd_fn_t cmd_start_fn, mission_cmd_fn_t cmd_verify_fn, mission_complete_fn_t mission_complete_fn) :
_cmd_start_fn(cmd_start_fn),
_cmd_verify_fn(cmd_verify_fn),
_mission_complete_fn(mission_complete_fn),
_prev_nav_cmd_id(AP_MISSION_CMD_ID_NONE),
_prev_nav_cmd_index(AP_MISSION_CMD_INDEX_NONE),
_prev_nav_cmd_wp_index(AP_MISSION_CMD_INDEX_NONE),
_last_change_time_ms(0)
{
#if CONFIG_HAL_BOARD == HAL_BOARD_SITL
if (_singleton != nullptr) {
AP_HAL::panic("Mission must be singleton");
}
#endif
_singleton = this;
// load parameter defaults
AP_Param::setup_object_defaults(this, var_info);
// clear commands
_nav_cmd.index = AP_MISSION_CMD_INDEX_NONE;
_do_cmd.index = AP_MISSION_CMD_INDEX_NONE;
// initialise other internal variables
_flags.state = MISSION_STOPPED;
_flags.nav_cmd_loaded = false;
_flags.do_cmd_loaded = false;
_flags.in_landing_sequence = false;
_flags.resuming_mission = false;
_force_resume = false;
}
// get singleton instance
static AP_Mission *get_singleton()
{
return _singleton;
}
/* Do not allow copies */
AP_Mission(const AP_Mission &other) = delete;
AP_Mission &operator=(const AP_Mission&) = delete;
// mission state enumeration
enum mission_state {
MISSION_STOPPED=0,
MISSION_RUNNING=1,
MISSION_COMPLETE=2
};
///
/// public mission methods
///
/// init - initialises this library including checks the version in eeprom matches this library
void init();
/// status - returns the status of the mission (i.e. Mission_Started, Mission_Complete, Mission_Stopped
mission_state state() const
{
return _flags.state;
}
/// num_commands - returns total number of commands in the mission
/// this number includes offset 0, the home location
uint16_t num_commands() const
{
return _cmd_total;
}
/// num_commands_max - returns maximum number of commands that can be stored
uint16_t num_commands_max() const;
/// start - resets current commands to point to the beginning of the mission
/// To-Do: should we validate the mission first and return true/false?
void start();
/// stop - stops mission execution. subsequent calls to update() will have no effect until the mission is started or resumed
void stop();
/// resume - continues the mission execution from where we last left off
/// previous running commands will be re-initialised
void resume();
/// start_or_resume - if MIS_AUTORESTART=0 this will call resume(), otherwise it will call start()
void start_or_resume();
/// check mission starts with a takeoff command
bool starts_with_takeoff_cmd();
/// reset - reset mission to the first command
void reset();
/// clear - clears out mission
bool clear();
/// truncate - truncate any mission items beyond given index
void truncate(uint16_t index);
/// update - ensures the command queues are loaded with the next command and calls main programs command_init and command_verify functions to progress the mission
/// should be called at 10hz or higher
void update();
///
/// public command methods
///
/// add_cmd - adds a command to the end of the command list and writes to storage
/// returns true if successfully added, false on failure
/// cmd.index is updated with it's new position in the mission
bool add_cmd(Mission_Command& cmd);
/// replace_cmd - replaces the command at position 'index' in the command list with the provided cmd
/// replacing the current active command will have no effect until the command is restarted
/// returns true if successfully replaced, false on failure
bool replace_cmd(uint16_t index, const Mission_Command& cmd);
/// is_nav_cmd - returns true if the command's id is a "navigation" command, false if "do" or "conditional" command
static bool is_nav_cmd(const Mission_Command& cmd);
/// get_current_nav_cmd - returns the current "navigation" command
const Mission_Command& get_current_nav_cmd() const
{
return _nav_cmd;
}
/// get_current_nav_index - returns the current "navigation" command index
/// Note that this will return 0 if there is no command. This is
/// used in MAVLink reporting of the mission command
uint16_t get_current_nav_index() const
{
return _nav_cmd.index==AP_MISSION_CMD_INDEX_NONE?0:_nav_cmd.index;
}
/// get_current_nav_id - return the id of the current nav command
uint16_t get_current_nav_id() const
{
return _nav_cmd.id;
}
/// get_prev_nav_cmd_id - returns the previous "navigation" command id
/// if there was no previous nav command it returns AP_MISSION_CMD_ID_NONE
/// we do not return the entire command to save on RAM
uint16_t get_prev_nav_cmd_id() const
{
return _prev_nav_cmd_id;
}
/// get_prev_nav_cmd_index - returns the previous "navigation" commands index (i.e. position in the mission command list)
/// if there was no previous nav command it returns AP_MISSION_CMD_INDEX_NONE
/// we do not return the entire command to save on RAM
uint16_t get_prev_nav_cmd_index() const
{
return _prev_nav_cmd_index;
}
/// get_prev_nav_cmd_with_wp_index - returns the previous "navigation" commands index that contains a waypoint (i.e. position in the mission command list)
/// if there was no previous nav command it returns AP_MISSION_CMD_INDEX_NONE
/// we do not return the entire command to save on RAM
uint16_t get_prev_nav_cmd_with_wp_index() const
{
return _prev_nav_cmd_wp_index;
}
/// get_next_nav_cmd - gets next "navigation" command found at or after start_index
/// returns true if found, false if not found (i.e. reached end of mission command list)
/// accounts for do_jump commands
bool get_next_nav_cmd(uint16_t start_index, Mission_Command& cmd);
/// get the ground course of the next navigation leg in centidegrees
/// from 0 36000. Return default_angle if next navigation
/// leg cannot be determined
int32_t get_next_ground_course_cd(int32_t default_angle);
/// get_current_do_cmd - returns active "do" command
const Mission_Command& get_current_do_cmd() const
{
return _do_cmd;
}
/// get_current_do_cmd_id - returns id of the active "do" command
uint16_t get_current_do_cmd_id() const
{
return _do_cmd.id;
}
// set_current_cmd - jumps to command specified by index
bool set_current_cmd(uint16_t index, bool rewind = false);
/// load_cmd_from_storage - load command from storage
/// true is return if successful
bool read_cmd_from_storage(uint16_t index, Mission_Command& cmd) const;
/// write_cmd_to_storage - write a command to storage
/// cmd.index is used to calculate the storage location
/// true is returned if successful
bool write_cmd_to_storage(uint16_t index, const Mission_Command& cmd);
/// write_home_to_storage - writes the special purpose cmd 0 (home) to storage
/// home is taken directly from ahrs
void write_home_to_storage();
static MAV_MISSION_RESULT convert_MISSION_ITEM_to_MISSION_ITEM_INT(const mavlink_mission_item_t &mission_item,
mavlink_mission_item_int_t &mission_item_int) WARN_IF_UNUSED;
static MAV_MISSION_RESULT convert_MISSION_ITEM_INT_to_MISSION_ITEM(const mavlink_mission_item_int_t &mission_item_int,
mavlink_mission_item_t &mission_item) WARN_IF_UNUSED;
// mavlink_int_to_mission_cmd - converts mavlink message to an AP_Mission::Mission_Command object which can be stored to eeprom
// return MAV_MISSION_ACCEPTED on success, MAV_MISSION_RESULT error on failure
static MAV_MISSION_RESULT mavlink_int_to_mission_cmd(const mavlink_mission_item_int_t& packet, AP_Mission::Mission_Command& cmd);
// mavlink_cmd_long_to_mission_cmd - converts a mavlink cmd long to an AP_Mission::Mission_Command object which can be stored to eeprom
// return MAV_MISSION_ACCEPTED on success, MAV_MISSION_RESULT error on failure
static MAV_MISSION_RESULT mavlink_cmd_long_to_mission_cmd(const mavlink_command_long_t& packet, AP_Mission::Mission_Command& cmd);
// mission_cmd_to_mavlink_int - converts an AP_Mission::Mission_Command object to a mavlink message which can be sent to the GCS
// return true on success, false on failure
static bool mission_cmd_to_mavlink_int(const AP_Mission::Mission_Command& cmd, mavlink_mission_item_int_t& packet);
// return the last time the mission changed in milliseconds
uint32_t last_change_time_ms(void) const
{
return _last_change_time_ms;
}
// find the nearest landing sequence starting point (DO_LAND_START) and
// return its index. Returns 0 if no appropriate DO_LAND_START point can
// be found.
uint16_t get_landing_sequence_start();
// find the nearest landing sequence starting point (DO_LAND_START) and
// switch to that mission item. Returns false if no DO_LAND_START
// available.
bool jump_to_landing_sequence(void);
// jumps the mission to the closest landing abort that is planned, returns false if unable to find a valid abort
bool jump_to_abort_landing_sequence(void);
// check which is the shortest route to landing an RTL via a DO_LAND_START or continuing on the current mission plan
bool is_best_land_sequence(void);
// set in_landing_sequence flag
void set_in_landing_sequence_flag(bool flag)
{
_flags.in_landing_sequence = flag;
}
// get in_landing_sequence flag
bool get_in_landing_sequence_flag() const {
return _flags.in_landing_sequence;
}
// force mission to resume when start_or_resume() is called
void set_force_resume(bool force_resume)
{
_force_resume = force_resume;
}
// get a reference to the AP_Mission semaphore, allowing an external caller to lock the
// storage while working with multiple waypoints
HAL_Semaphore &get_semaphore(void)
{
return _rsem;
}
// returns true if the mission contains the requested items
bool contains_item(MAV_CMD command) const;
// reset the mission history to prevent recalling previous mission histories when restarting missions.
void reset_wp_history(void);
/*
return true if MIS_OPTIONS is set to allow continue of mission
logic after a land. If this is false then after a landing is
complete the vehicle should disarm and mission logic should stop
*/
bool continue_after_land(void) const {
return (_options.get() & AP_MISSION_MASK_CONTINUE_AFTER_LAND) != 0;
}
// user settable parameters
static const struct AP_Param::GroupInfo var_info[];
// allow lua to get/set any WP items in any order in a mavlink-ish kinda way.
bool get_item(uint16_t index, mavlink_mission_item_int_t& result) ;
bool set_item(uint16_t index, mavlink_mission_item_int_t& source) ;
private:
static AP_Mission *_singleton;
static StorageAccess _storage;
static bool stored_in_location(uint16_t id);
struct Mission_Flags {
mission_state state;
uint8_t nav_cmd_loaded : 1; // true if a "navigation" command has been loaded into _nav_cmd
uint8_t do_cmd_loaded : 1; // true if a "do"/"conditional" command has been loaded into _do_cmd
uint8_t do_cmd_all_done : 1; // true if all "do"/"conditional" commands have been completed (stops unnecessary searching through eeprom for do commands)
bool in_landing_sequence : 1; // true if the mission has jumped to a landing
bool resuming_mission : 1; // true if the mission is resuming and set false once the aircraft attains the interupted WP
} _flags;
// mission WP resume history
uint16_t _wp_index_history[AP_MISSION_MAX_WP_HISTORY]; // storing the nav_cmd index for the last 6 WPs
///
/// private methods
///
/// complete - mission is marked complete and clean-up performed including calling the mission_complete_fn
void complete();
bool verify_command(const Mission_Command& cmd);
bool start_command(const Mission_Command& cmd);
/// advance_current_nav_cmd - moves current nav command forward
// starting_index is used to set the index from which searching will begin, leave as 0 to search from the current navigation target
/// do command will also be loaded
/// accounts for do-jump commands
// returns true if command is advanced, false if failed (i.e. mission completed)
bool advance_current_nav_cmd(uint16_t starting_index = 0);
/// advance_current_do_cmd - moves current do command forward
/// accounts for do-jump commands
/// returns true if successfully advanced (can it ever be unsuccessful?)
void advance_current_do_cmd();
/// get_next_cmd - gets next command found at or after start_index
/// returns true if found, false if not found (i.e. mission complete)
/// accounts for do_jump commands
/// increment_jump_num_times_if_found should be set to true if advancing the active navigation command
bool get_next_cmd(uint16_t start_index, Mission_Command& cmd, bool increment_jump_num_times_if_found, bool send_gcs_msg = true);
/// get_next_do_cmd - gets next "do" or "conditional" command after start_index
/// returns true if found, false if not found
/// stops and returns false if it hits another navigation command before it finds the first do or conditional command
/// accounts for do_jump commands but never increments the jump's num_times_run (get_next_nav_cmd is responsible for this)
bool get_next_do_cmd(uint16_t start_index, Mission_Command& cmd);
///
/// jump handling methods
///
// init_jump_tracking - initialise jump_tracking variables
void init_jump_tracking();
/// get_jump_times_run - returns number of times the jump command has been run
/// return is signed to be consistent with do-jump cmd's repeat count which can be -1 (to signify to repeat forever)
int16_t get_jump_times_run(const Mission_Command& cmd);
/// increment_jump_times_run - increments the recorded number of times the jump command has been run
void increment_jump_times_run(Mission_Command& cmd, bool send_gcs_msg = true);
/// check_eeprom_version - checks version of missions stored in eeprom matches this library
/// command list will be cleared if they do not match
void check_eeprom_version();
// check if command is a landing type command. Asside the obvious, MAV_CMD_DO_PARACHUTE is considered a type of landing
bool is_landing_type_cmd(uint16_t id) const;
// approximate the distance travelled to get to a landing. DO_JUMP commands are observed in look forward.
bool distance_to_landing(uint16_t index, float &tot_distance,Location current_loc);
// calculate the location of a resume cmd wp
bool calc_rewind_pos(Mission_Command& rewind_cmd);
// update progress made in mission to store last position in the event of mission exit
void update_exit_position(void);
/// sanity checks that the masked fields are not NaN's or infinite
static MAV_MISSION_RESULT sanity_check_params(const mavlink_mission_item_int_t& packet);
// parameters
AP_Int16 _cmd_total; // total number of commands in the mission
AP_Int8 _restart; // controls mission starting point when entering Auto mode (either restart from beginning of mission or resume from last command run)
AP_Int16 _options; // bitmask options for missions, currently for mission clearing on reboot but can be expanded as required
// pointer to main program functions
mission_cmd_fn_t _cmd_start_fn; // pointer to function which will be called when a new command is started
mission_cmd_fn_t _cmd_verify_fn; // pointer to function which will be called repeatedly to ensure a command is progressing
mission_complete_fn_t _mission_complete_fn; // pointer to function which will be called when mission completes
// internal variables
struct Mission_Command _nav_cmd; // current "navigation" command. It's position in the command list is held in _nav_cmd.index
struct Mission_Command _do_cmd; // current "do" command. It's position in the command list is held in _do_cmd.index
struct Mission_Command _resume_cmd; // virtual wp command that is used to resume mission if the mission needs to be rewound on resume.
uint16_t _prev_nav_cmd_id; // id of the previous "navigation" command. (WAYPOINT, LOITER_TO_ALT, ect etc)
uint16_t _prev_nav_cmd_index; // index of the previous "navigation" command. Rarely used which is why we don't store the whole command
uint16_t _prev_nav_cmd_wp_index; // index of the previous "navigation" command that contains a waypoint. Rarely used which is why we don't store the whole command
bool _force_resume; // when set true it forces mission to resume irrespective of MIS_RESTART param.
struct Location _exit_position; // the position in the mission that the mission was exited
// jump related variables
struct jump_tracking_struct {
uint16_t index; // index of do-jump commands in mission
int16_t num_times_run; // number of times this jump command has been run
} _jump_tracking[AP_MISSION_MAX_NUM_DO_JUMP_COMMANDS];
// last time that mission changed
uint32_t _last_change_time_ms;
// Distance to repeat on mission resume (m), can be set with MAV_CMD_DO_SET_RESUME_REPEAT_DIST
uint16_t _repeat_dist;
// multi-thread support. This is static so it can be used from
// const functions
static HAL_Semaphore _rsem;
// mission items common to all vehicles:
bool start_command_do_gripper(const AP_Mission::Mission_Command& cmd);
bool start_command_do_servorelayevents(const AP_Mission::Mission_Command& cmd);
bool start_command_camera(const AP_Mission::Mission_Command& cmd);
bool start_command_parachute(const AP_Mission::Mission_Command& cmd);
bool command_do_set_repeat_dist(const AP_Mission::Mission_Command& cmd);
};
namespace AP
{
AP_Mission *mission();
};