51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
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#define XTRACK_GAIN 10 // Amount to compensate for crosstrack (degrees/100 per meter)
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#define XTRACK_ENTRY_ANGLE 3000 // Max angle used to correct for track following degrees*100
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#include <AP_GPS.h> // ArduPilot GPS Library
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#include "Waypoints.h" // ArduPilot Waypoints Library
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#include "WProgram.h"
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#define T7 10000000
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class Navigation {
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public:
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Navigation(AP_GPS *withGPS);
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void update_gps(void); // called 50 Hz
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void set_home(Waypoints::WP loc);
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void set_next_wp(Waypoints::WP loc);
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void hold_course(int8_t b); // 1 = hold a current course, 0 disables course hold
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long get_distance(Waypoints::WP *loc1, Waypoints::WP *loc2);
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long get_bearing(Waypoints::WP *loc1, Waypoints::WP *loc2);
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long bearing; // deg * 100 : 0 to 360 current desired bearing to navigate
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long distance; // meters : distance plane to next waypoint
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long altitude_above_home; // meters * 100 relative to home position
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long total_distance; // meters : distance between waypoints
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long bearing_error; // deg * 100 : 18000 to -18000
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long altitude_error; // deg * 100 : 18000 to -18000
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int16_t loiter_sum;
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Waypoints::WP home, location, prev_wp, next_wp;
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private:
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void calc_long_scaling(int32_t lat);
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void calc_bearing_error(void);
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void calc_altitude_error(void);
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void calc_distance_error(void);
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void update_crosstrack(void);
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void reset_crosstrack(void);
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int32_t wrap_360(int32_t error); // utility
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int16_t _old_bearing; // used to track delta on the bearing
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AP_GPS *_gps;
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long _crosstrack_bearing; // deg * 100 : 0 to 360 desired angle of plane to target
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float _crosstrack_error; // deg * 100 : 18000 to -18000 meters we are off trackline
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long _hold_course; // deg * 100 dir of plane
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long _target_altitude; // used for
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long _offset_altitude; // used for
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float _altitude_estimate;
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float _scaleLongUp; // used to reverse longtitude scaling
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float _scaleLongDown; // used to reverse longtitude scaling
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int16_t _loiter_delta;
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};
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