mirror of https://github.com/ArduPilot/ardupilot
68 lines
2.8 KiB
Plaintext
68 lines
2.8 KiB
Plaintext
/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
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// counter to verify landings
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static uint16_t land_detector = LAND_DETECTOR_TRIGGER; // we assume we are landed
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// land_complete_maybe - return true if we may have landed (used to reset loiter targets during landing)
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static bool land_complete_maybe()
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{
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return (ap.land_complete || ap.land_complete_maybe);
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}
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// update_land_detector - checks if we have landed and updates the ap.land_complete flag
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// called at 50hz
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static void update_land_detector()
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{
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bool climb_rate_low = (abs(climb_rate) < LAND_DETECTOR_CLIMBRATE_MAX);
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bool target_climb_rate_low = !pos_control.is_active_z() || (pos_control.get_desired_velocity().z <= LAND_DETECTOR_DESIRED_CLIMBRATE_MAX);
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bool motor_at_lower_limit = motors.limit.throttle_lower;
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bool throttle_low = (FRAME_CONFIG == HELI_FRAME) || (motors.get_throttle_out() < get_non_takeoff_throttle());
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bool not_rotating_fast = (ahrs.get_gyro().length() < LAND_DETECTOR_ROTATION_MAX);
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if (climb_rate_low && target_climb_rate_low && motor_at_lower_limit && throttle_low && not_rotating_fast) {
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if (!ap.land_complete) {
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// increase counter until we hit the trigger then set land complete flag
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if( land_detector < LAND_DETECTOR_TRIGGER) {
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land_detector++;
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}else{
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set_land_complete(true);
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land_detector = LAND_DETECTOR_TRIGGER;
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}
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}
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} else {
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// we've sensed movement up or down so reset land_detector
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land_detector = 0;
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// if throttle output is high then clear landing flag
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if (motors.get_throttle_out() > get_non_takeoff_throttle()) {
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set_land_complete(false);
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}
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}
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// set land maybe flag
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set_land_complete_maybe(land_detector >= LAND_DETECTOR_MAYBE_TRIGGER);
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}
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// update_throttle_low_comp - sets motors throttle_low_comp value depending upon vehicle state
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// low values favour pilot/autopilot throttle over attitude control, high values favour attitude control over throttle
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// has no effect when throttle is above hover throttle
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static void update_throttle_low_comp()
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{
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// manual throttle
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if (mode_has_manual_throttle(control_mode)) {
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if(!motors.armed() || g.rc_3.control_in <= 0) {
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motors.set_throttle_low_comp(0.1f);
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} else {
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motors.set_throttle_low_comp(0.5f);
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}
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} else {
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// autopilot controlled throttle
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const Vector3f angle_target = attitude_control.angle_ef_targets();
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if (pythagorous2(angle_target.x, angle_target.y) > 1500.0f) {
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// if target lean angle is over 15 degrees set high
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motors.set_throttle_low_comp(0.9f);
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} else {
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motors.set_throttle_low_comp(0.1f);
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}
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}
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}
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