ardupilot/Rover/mode.h

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#pragma once
#include <stdint.h>
#include <GCS_MAVLink/GCS_MAVLink.h>
#include <AP_Math/AP_Math.h>
#include <AP_Mission/AP_Mission.h>
#include <AR_WPNav/AR_WPNav.h>
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#include "defines.h"
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// pre-define ModeRTL so Auto can appear higher in this file
class ModeRTL;
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class Mode
{
public:
// Auto Pilot modes
// ----------------
enum Number : uint8_t {
MANUAL = 0,
ACRO = 1,
STEERING = 3,
HOLD = 4,
LOITER = 5,
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FOLLOW = 6,
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SIMPLE = 7,
AUTO = 10,
RTL = 11,
SMART_RTL = 12,
GUIDED = 15,
INITIALISING = 16
};
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// Constructor
Mode();
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// do not allow copying
Mode(const Mode &other) = delete;
Mode &operator=(const Mode&) = delete;
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// enter this mode, returns false if we failed to enter
bool enter();
// perform any cleanups required:
void exit();
// returns a unique number specific to this mode
virtual uint32_t mode_number() const = 0;
// returns short text name (up to 4 bytes)
virtual const char *name4() const = 0;
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//
// methods that sub classes should override to affect movement of the vehicle in this mode
//
// convert user input to targets, implement high level control for this mode
virtual void update() = 0;
//
// attributes of the mode
//
// return if in non-manual mode : Auto, Guided, RTL, SmartRTL
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virtual bool is_autopilot_mode() const { return false; }
// return if external control is allowed in this mode (Guided or Guided-within-Auto)
virtual bool in_guided_mode() const { return false; }
// returns true if vehicle can be armed or disarmed from the transmitter in this mode
virtual bool allows_arming_from_transmitter() { return !is_autopilot_mode(); }
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// returns false if vehicle cannot be armed in this mode
virtual bool allows_arming() const { return true; }
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bool allows_stick_mixing() const { return is_autopilot_mode(); }
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//
// attributes for mavlink system status reporting
//
// returns true if any RC input is used
virtual bool has_manual_input() const { return false; }
// true if heading is controlled
virtual bool attitude_stabilized() const { return true; }
// true if mode requires position and/or velocity estimate
virtual bool requires_position() const { return true; }
virtual bool requires_velocity() const { return true; }
// return heading (in degrees) and cross track error (in meters) for reporting to ground station (NAV_CONTROLLER_OUTPUT message)
virtual float wp_bearing() const;
virtual float nav_bearing() const;
virtual float crosstrack_error() const;
virtual float get_desired_lat_accel() const;
// get speed error in m/s, not currently supported
float speed_error() const { return 0.0f; }
//
// navigation methods
//
// return distance (in meters) to destination
virtual float get_distance_to_destination() const { return 0.0f; }
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// return desired location (used in Guided, Auto, RTL, etc)
// return true on success, false if there is no valid destination
virtual bool get_desired_location(Location& destination) const WARN_IF_UNUSED { return false; }
// set desired location (used in Guided, Auto)
// next_leg_bearing_cd should be heading to the following waypoint (used to slow the vehicle in order to make the turn)
virtual bool set_desired_location(const struct Location& destination, float next_leg_bearing_cd = AR_WPNAV_HEADING_UNKNOWN) WARN_IF_UNUSED;
// true if vehicle has reached desired location. defaults to true because this is normally used by missions and we do not want the mission to become stuck
virtual bool reached_destination() const { return true; }
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// get default speed for this mode (held in CRUISE_SPEED, WP_SPEED or RTL_SPEED)
// rtl argument should be true if called from RTL or SmartRTL modes (handled here to avoid duplication)
float get_speed_default(bool rtl = false) const;
// set desired speed in m/s
virtual bool set_desired_speed(float speed) { return false; }
// execute the mission in reverse (i.e. backing up)
void set_reversed(bool value);
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// handle tacking request (from auxiliary switch) in sailboats
virtual void handle_tack_request();
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protected:
// subclasses override this to perform checks before entering the mode
virtual bool _enter() { return true; }
// subclasses override this to perform any required cleanup when exiting the mode
virtual void _exit() { return; }
// decode pilot steering and throttle inputs and return in steer_out and throttle_out arguments
// steering_out is in the range -4500 ~ +4500 with positive numbers meaning rotate clockwise
// throttle_out is in the range -100 ~ +100
void get_pilot_desired_steering_and_throttle(float &steering_out, float &throttle_out);
// decode pilot input steering and return steering_out and speed_out (in m/s)
void get_pilot_desired_steering_and_speed(float &steering_out, float &speed_out);
// decode pilot lateral movement input and return in lateral_out argument
void get_pilot_desired_lateral(float &lateral_out);
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// decode pilot's input and return heading_out (in cd) and speed_out (in m/s)
void get_pilot_desired_heading_and_speed(float &heading_out, float &speed_out);
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// high level call to navigate to waypoint
void navigate_to_waypoint();
// calculate steering output given a turn rate and speed
void calc_steering_from_turn_rate(float turn_rate, float speed, bool reversed);
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// calculate steering angle given a desired lateral acceleration
void calc_steering_from_lateral_acceleration(float lat_accel, bool reversed = false);
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// calculate steering output to drive towards desired heading
// rate_max is a maximum turn rate in deg/s. set to zero to use default turn rate limits
void calc_steering_to_heading(float desired_heading_cd, float rate_max_degs = 0.0f);
// calculates the amount of throttle that should be output based
// on things like proximity to corners and current speed
virtual void calc_throttle(float target_speed, bool avoidance_enabled);
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// performs a controlled stop. returns true once vehicle has stopped
bool stop_vehicle();
// estimate maximum vehicle speed (in m/s)
// cruise_speed is in m/s, cruise_throttle should be in the range -1 to +1
float calc_speed_max(float cruise_speed, float cruise_throttle) const;
// calculate pilot input to nudge speed up or down
// target_speed should be in meters/sec
// reversed should be true if the vehicle is intentionally backing up which allows the pilot to increase the backing up speed by pulling the throttle stick down
float calc_speed_nudge(float target_speed, bool reversed);
protected:
// decode pilot steering and throttle inputs and return in steer_out and throttle_out arguments
// steering_out is in the range -4500 ~ +4500 with positive numbers meaning rotate clockwise
// throttle_out is in the range -100 ~ +100
void get_pilot_input(float &steering_out, float &throttle_out);
void set_steering(float steering_value);
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// references to avoid code churn:
class AP_AHRS &ahrs;
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class Parameters &g;
class ParametersG2 &g2;
class RC_Channel *&channel_steer;
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class RC_Channel *&channel_throttle;
class RC_Channel *&channel_lateral;
class AR_AttitudeControl &attitude_control;
// private members for waypoint navigation
float _distance_to_destination; // distance from vehicle to final destination in meters
bool _reached_destination; // true once the vehicle has reached the destination
float _desired_yaw_cd; // desired yaw in centi-degrees. used in Auto, Guided and Loiter
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};
class ModeAcro : public Mode
{
public:
uint32_t mode_number() const override { return ACRO; }
const char *name4() const override { return "ACRO"; }
// methods that affect movement of the vehicle in this mode
void update() override;
// attributes for mavlink system status reporting
bool has_manual_input() const override { return true; }
// acro mode requires a velocity estimate for non skid-steer rovers
bool requires_position() const override { return false; }
bool requires_velocity() const override;
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// sailboats in acro mode support user manually initiating tacking from transmitter
void handle_tack_request() override;
};
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class ModeAuto : public Mode
{
public:
uint32_t mode_number() const override { return AUTO; }
const char *name4() const override { return "AUTO"; }
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// methods that affect movement of the vehicle in this mode
void update() override;
void calc_throttle(float target_speed, bool avoidance_enabled) override;
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// attributes of the mode
bool is_autopilot_mode() const override { return true; }
// return if external control is allowed in this mode (Guided or Guided-within-Auto)
bool in_guided_mode() const override { return _submode == Auto_Guided; }
// return distance (in meters) to destination
float get_distance_to_destination() const override;
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// get or set desired location
bool get_desired_location(Location& destination) const override WARN_IF_UNUSED;
bool set_desired_location(const struct Location& destination, float next_leg_bearing_cd = AR_WPNAV_HEADING_UNKNOWN) override WARN_IF_UNUSED;
bool reached_destination() const override;
// set desired speed in m/s
bool set_desired_speed(float speed) override;
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// start RTL (within auto)
void start_RTL();
AP_Mission mission{
FUNCTOR_BIND_MEMBER(&ModeAuto::start_command, bool, const AP_Mission::Mission_Command&),
FUNCTOR_BIND_MEMBER(&ModeAuto::verify_command_callback, bool, const AP_Mission::Mission_Command&),
FUNCTOR_BIND_MEMBER(&ModeAuto::exit_mission, void)};
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protected:
bool _enter() override;
void _exit() override;
enum AutoSubMode {
Auto_WP, // drive to a given location
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Auto_HeadingAndSpeed, // turn to a given heading
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Auto_RTL, // perform RTL within auto mode
Auto_Loiter, // perform Loiter within auto mode
Auto_Guided, // handover control to external navigation system from within auto mode
Auto_Stop // stop the vehicle as quickly as possible
} _submode;
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private:
bool check_trigger(void);
bool start_loiter();
void start_guided(const Location& target_loc);
void start_stop();
void send_guided_position_target();
bool start_command(const AP_Mission::Mission_Command& cmd);
void exit_mission();
bool verify_command_callback(const AP_Mission::Mission_Command& cmd);
bool verify_command(const AP_Mission::Mission_Command& cmd);
void do_RTL(void);
bool do_nav_wp(const AP_Mission::Mission_Command& cmd, bool always_stop_at_destination);
void do_nav_guided_enable(const AP_Mission::Mission_Command& cmd);
void do_nav_set_yaw_speed(const AP_Mission::Mission_Command& cmd);
void do_nav_delay(const AP_Mission::Mission_Command& cmd);
bool verify_nav_delay(const AP_Mission::Mission_Command& cmd);
bool verify_nav_wp(const AP_Mission::Mission_Command& cmd);
bool verify_RTL();
bool verify_loiter_unlimited(const AP_Mission::Mission_Command& cmd);
bool verify_loiter_time(const AP_Mission::Mission_Command& cmd);
bool verify_nav_guided_enable(const AP_Mission::Mission_Command& cmd);
bool verify_nav_set_yaw_speed();
void do_wait_delay(const AP_Mission::Mission_Command& cmd);
void do_within_distance(const AP_Mission::Mission_Command& cmd);
bool verify_wait_delay();
bool verify_within_distance();
void do_change_speed(const AP_Mission::Mission_Command& cmd);
void do_set_home(const AP_Mission::Mission_Command& cmd);
void do_set_reverse(const AP_Mission::Mission_Command& cmd);
void do_guided_limits(const AP_Mission::Mission_Command& cmd);
enum Mis_Done_Behave {
MIS_DONE_BEHAVE_HOLD = 0,
MIS_DONE_BEHAVE_LOITER = 1,
MIS_DONE_BEHAVE_ACRO = 2
};
bool auto_triggered; // true when auto has been triggered to start
// HeadingAndSpeed sub mode variables
float _desired_speed; // desired speed in HeadingAndSpeed submode
bool _reached_heading; // true when vehicle has reached desired heading in TurnToHeading sub mode
// Loiter control
uint16_t loiter_duration; // How long we should loiter at the nav_waypoint (time in seconds)
uint32_t loiter_start_time; // How long have we been loitering - The start time in millis
bool previously_reached_wp; // set to true if we have EVER reached the waypoint
// Guided-within-Auto variables
struct {
Location loc; // location target sent to external navigation
bool valid; // true if loc is valid
uint32_t last_sent_ms; // system time that target was last sent to offboard navigation
} guided_target;
// Conditional command
// A value used in condition commands (eg delay, change alt, etc.)
// For example in a change altitude command, it is the altitude to change to.
int32_t condition_value;
// A starting value used to check the status of a conditional command.
// For example in a delay command the condition_start records that start time for the delay
int32_t condition_start;
// Delay the next navigation command
uint32_t nav_delay_time_max_ms; // used for delaying the navigation commands
uint32_t nav_delay_time_start_ms;
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};
class ModeGuided : public Mode
{
public:
uint32_t mode_number() const override { return GUIDED; }
const char *name4() const override { return "GUID"; }
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// methods that affect movement of the vehicle in this mode
void update() override;
// attributes of the mode
bool is_autopilot_mode() const override { return true; }
// return if external control is allowed in this mode (Guided or Guided-within-Auto)
bool in_guided_mode() const override { return true; }
// return distance (in meters) to destination
float get_distance_to_destination() const override;
// return true if vehicle has reached destination
bool reached_destination() const override;
// set desired speed in m/s
bool set_desired_speed(float speed) override;
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// get or set desired location
bool get_desired_location(Location& destination) const override WARN_IF_UNUSED;
bool set_desired_location(const struct Location& destination, float next_leg_bearing_cd = AR_WPNAV_HEADING_UNKNOWN) override WARN_IF_UNUSED;
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// set desired heading and speed
void set_desired_heading_and_speed(float yaw_angle_cd, float target_speed);
// set desired heading-delta, turn-rate and speed
void set_desired_heading_delta_and_speed(float yaw_delta_cd, float target_speed);
void set_desired_turn_rate_and_speed(float turn_rate_cds, float target_speed);
// set steering and throttle (-1 to +1). Only called from scripts
void set_steering_and_throttle(float steering, float throttle);
// vehicle start loiter
bool start_loiter();
// guided limits
void limit_set(uint32_t timeout_ms, float horiz_max);
void limit_clear();
void limit_init_time_and_location();
bool limit_breached() const;
protected:
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enum GuidedMode {
Guided_WP,
Guided_HeadingAndSpeed,
Guided_TurnRateAndSpeed,
Guided_Loiter,
Guided_SteeringAndThrottle
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};
bool _enter() override;
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GuidedMode _guided_mode; // stores which GUIDED mode the vehicle is in
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// attitude control
bool have_attitude_target; // true if we have a valid attitude target
uint32_t _des_att_time_ms; // system time last call to set_desired_attitude was made (used for timeout)
float _desired_yaw_rate_cds;// target turn rate centi-degrees per second
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bool sent_notification; // used to send one time notification to ground station
float _desired_speed; // desired speed used only in HeadingAndSpeed submode
// direct steering and throttle control
bool _have_strthr; // true if we have a valid direct steering and throttle inputs
uint32_t _strthr_time_ms; // system time last call to set_steering_and_throttle was made (used for timeout)
float _strthr_steering; // direct steering input in the range -1 to +1
float _strthr_throttle; // direct throttle input in the range -1 to +1
// limits
struct {
uint32_t timeout_ms;// timeout from the time that guided is invoked
float horiz_max; // horizontal position limit in meters from where guided mode was initiated (0 = no limit)
uint32_t start_time_ms; // system time in milliseconds that control was handed to the external computer
Location start_loc; // starting location for checking horiz_max limit
} limit;
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};
class ModeHold : public Mode
{
public:
uint32_t mode_number() const override { return HOLD; }
const char *name4() const override { return "HOLD"; }
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// methods that affect movement of the vehicle in this mode
void update() override;
// attributes for mavlink system status reporting
bool attitude_stabilized() const override { return false; }
// hold mode does not require position or velocity estimate
bool requires_position() const override { return false; }
bool requires_velocity() const override { return false; }
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};
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class ModeLoiter : public Mode
{
public:
uint32_t mode_number() const override { return LOITER; }
const char *name4() const override { return "LOIT"; }
// methods that affect movement of the vehicle in this mode
void update() override;
// attributes of the mode
bool is_autopilot_mode() const override { return true; }
// return desired heading (in degrees) and cross track error (in meters) for reporting to ground station (NAV_CONTROLLER_OUTPUT message)
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float wp_bearing() const override { return _desired_yaw_cd * 0.01f; }
float nav_bearing() const override { return _desired_yaw_cd * 0.01f; }
float crosstrack_error() const override { return 0.0f; }
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// return desired location
bool get_desired_location(Location& destination) const override WARN_IF_UNUSED;
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// return distance (in meters) to destination
float get_distance_to_destination() const override { return _distance_to_destination; }
protected:
bool _enter() override;
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Location _destination; // target location to hold position around
float _desired_speed; // desired speed (ramped down from initial speed to zero)
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};
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class ModeManual : public Mode
{
public:
uint32_t mode_number() const override { return MANUAL; }
const char *name4() const override { return "MANU"; }
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// methods that affect movement of the vehicle in this mode
void update() override;
// attributes for mavlink system status reporting
bool has_manual_input() const override { return true; }
bool attitude_stabilized() const override { return false; }
// manual mode does not require position or velocity estimate
bool requires_position() const override { return false; }
bool requires_velocity() const override { return false; }
protected:
void _exit() override;
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};
class ModeRTL : public Mode
{
public:
uint32_t mode_number() const override { return RTL; }
const char *name4() const override { return "RTL"; }
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// methods that affect movement of the vehicle in this mode
void update() override;
// attributes of the mode
bool is_autopilot_mode() const override { return true; }
// do not allow arming from this mode
bool allows_arming() const override { return false; }
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// return desired location
bool get_desired_location(Location& destination) const override WARN_IF_UNUSED;
// return distance (in meters) to destination
float get_distance_to_destination() const override { return _distance_to_destination; }
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bool reached_destination() const override;
// set desired speed in m/s
bool set_desired_speed(float speed) override;
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protected:
bool _enter() override;
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bool sent_notification; // used to send one time notification to ground station
bool _loitering; // true if loitering at end of RTL
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};
class ModeSmartRTL : public Mode
{
public:
uint32_t mode_number() const override { return SMART_RTL; }
const char *name4() const override { return "SRTL"; }
// methods that affect movement of the vehicle in this mode
void update() override;
// attributes of the mode
bool is_autopilot_mode() const override { return true; }
// do not allow arming from this mode
bool allows_arming() const override { return false; }
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// return desired location
bool get_desired_location(Location& destination) const override WARN_IF_UNUSED;
// return distance (in meters) to destination
float get_distance_to_destination() const override { return _distance_to_destination; }
bool reached_destination() const override { return smart_rtl_state == SmartRTL_StopAtHome; }
// set desired speed in m/s
bool set_desired_speed(float speed) override;
// save current position for use by the smart_rtl flight mode
void save_position();
protected:
// Safe RTL states
enum SmartRTLState {
SmartRTL_WaitForPathCleanup,
SmartRTL_PathFollow,
SmartRTL_StopAtHome,
SmartRTL_Failure
} smart_rtl_state;
bool _enter() override;
bool _load_point;
bool _loitering; // true if loitering at end of SRTL
};
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class ModeSteering : public Mode
{
public:
uint32_t mode_number() const override { return STEERING; }
const char *name4() const override { return "STER"; }
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// methods that affect movement of the vehicle in this mode
void update() override;
// attributes for mavlink system status reporting
bool has_manual_input() const override { return true; }
// steering requires velocity but not position
bool requires_position() const override { return false; }
bool requires_velocity() const override { return true; }
// return desired lateral acceleration
float get_desired_lat_accel() const override { return _desired_lat_accel; }
private:
float _desired_lat_accel; // desired lateral acceleration calculated from pilot steering input
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};
class ModeInitializing : public Mode
{
public:
uint32_t mode_number() const override { return INITIALISING; }
const char *name4() const override { return "INIT"; }
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// methods that affect movement of the vehicle in this mode
void update() override { }
// attributes for mavlink system status reporting
bool has_manual_input() const override { return true; }
bool attitude_stabilized() const override { return false; }
};
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class ModeFollow : public Mode
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{
public:
uint32_t mode_number() const override { return FOLLOW; }
const char *name4() const override { return "FOLL"; }
// methods that affect movement of the vehicle in this mode
void update() override;
// attributes of the mode
bool is_autopilot_mode() const override { return true; }
// return desired heading (in degrees) and cross track error (in meters) for reporting to ground station (NAV_CONTROLLER_OUTPUT message)
float wp_bearing() const override;
float nav_bearing() const override { return wp_bearing(); }
float crosstrack_error() const override { return 0.0f; }
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// return desired location
bool get_desired_location(Location& destination) const override WARN_IF_UNUSED { return false; }
// return distance (in meters) to destination
float get_distance_to_destination() const override;
// set desired speed in m/s
bool set_desired_speed(float speed) override;
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protected:
bool _enter() override;
void _exit() override;
float _desired_speed; // desired speed in m/s
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};
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class ModeSimple : public Mode
{
public:
uint32_t mode_number() const override { return SIMPLE; }
const char *name4() const override { return "SMPL"; }
// methods that affect movement of the vehicle in this mode
void update() override;
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void init_heading();
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// simple type enum used for SIMPLE_TYPE parameter
enum simple_type {
Simple_InitialHeading = 0,
Simple_CardinalDirections = 1,
};
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private:
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float _initial_heading_cd; // vehicle heading (in centi-degrees) at moment vehicle was armed
float _desired_heading_cd; // latest desired heading (in centi-degrees) from pilot
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};