// set_auto_yaw_roi - sets the yaw to look at roi for auto mode
void Copter::set_auto_yaw_roi(const Location &roi_location)
{
// if location is zero lat, lon and altitude turn off ROI
if (roi_location.alt == 0 && roi_location.lat == 0 && roi_location.lng == 0) {
// set auto yaw mode back to default assuming the active command is a waypoint command. A more sophisticated method is required to ensure we return to the proper yaw control for the active command
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
#if MOUNT == ENABLED
// switch off the camera tracking if enabled
if (camera_mount.get_mode() == MAV_MOUNT_MODE_GPS_POINT) {
camera_mount.set_mode_to_default();
}
#endif // MOUNT == ENABLED
}else{
#if MOUNT == ENABLED
// check if mount type requires us to rotate the quad
if(!camera_mount.has_pan_control()) {
roi_WP = pv_location_to_vector(roi_location);
set_auto_yaw_mode(AUTO_YAW_ROI);
}
// send the command to the camera mount
camera_mount.set_roi_target(roi_location);
// TO-DO: expand handling of the do_nav_roi to support all modes of the MAVLink. Currently we only handle mode 4 (see below)
// 0: do nothing
// 1: point at next waypoint
// 2: point at a waypoint taken from WP# parameter (2nd parameter?)
// 3: point at a location given by alt, lon, lat parameters
// 4: point at a target given a target id (can't be implemented)
#else
// if we have no camera mount aim the quad at the location
roi_WP = pv_location_to_vector(roi_location);
set_auto_yaw_mode(AUTO_YAW_ROI);
#endif // MOUNT == ENABLED
}
}
// rtl_loiterathome_start - initialise return to home
void Copter::rtl_loiterathome_start()
{
rtl_state = RTL_LoiterAtHome;
rtl_state_complete = false;
rtl_loiter_start_time = millis();
// yaw back to initial take-off heading yaw unless pilot has already overridden yaw
if(get_default_auto_yaw_mode(true) != AUTO_YAW_HOLD) {
set_auto_yaw_mode(AUTO_YAW_RESETTOARMEDYAW);
} else {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// auto_circle_movetoedge_start - initialise waypoint controller to move to edge of a circle with it's center at the specified location
// we assume the caller has performed all required GPS_ok checks
void Copter::auto_circle_movetoedge_start(const Location_Class &circle_center, float radius_m)
{
// convert location to vector from ekf origin
Vector3f circle_center_neu;
if (!circle_center.get_vector_from_origin_NEU(circle_center_neu)) {
// default to current position and log error
circle_center_neu = inertial_nav.get_position();
Log_Write_Error(ERROR_SUBSYSTEM_NAVIGATION, ERROR_CODE_FAILED_CIRCLE_INIT);
}
circle_nav.set_center(circle_center_neu);
// set circle radius
if (!is_zero(radius_m)) {
circle_nav.set_radius(radius_m * 100.0f);
}
// check our distance from edge of circle
Vector3f circle_edge_neu;
circle_nav.get_closest_point_on_circle(circle_edge_neu);
float dist_to_edge = (inertial_nav.get_position() - circle_edge_neu).length();
// if more than 3m then fly to edge
if (dist_to_edge > 300.0f) {
// set the state to move to the edge of the circle
auto_mode = Auto_CircleMoveToEdge;
// convert circle_edge_neu to Location_Class
Location_Class circle_edge(circle_edge_neu);
// convert altitude to same as command
circle_edge.set_alt_cm(circle_center.alt, circle_center.get_alt_frame());
// initialise wpnav to move to edge of circle
if (!wp_nav.set_wp_destination(circle_edge)) {
// failure to set destination can only be because of missing terrain data
failsafe_terrain_on_event();
}
// if we are outside the circle, point at the edge, otherwise hold yaw
const Vector3f &curr_pos = inertial_nav.get_position();
float dist_to_center = norm(circle_center_neu.x - curr_pos.x, circle_center_neu.y - curr_pos.y);
if (dist_to_center > circle_nav.get_radius() && dist_to_center > 500) {
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
} else {
// vehicle is within circle so hold yaw to avoid spinning as we move to edge of circle
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
} else {
auto_circle_start();
}
}
// initialise guided mode's angle controller
void Copter::guided_angle_control_start()
{
// set guided_mode to velocity controller
guided_mode = Guided_Angle;
// set vertical speed and acceleration
pos_control.set_speed_z(wp_nav.get_speed_down(), wp_nav.get_speed_up());
pos_control.set_accel_z(wp_nav.get_accel_z());
// initialise position and desired velocity
if (!pos_control.is_active_z()) {
pos_control.set_alt_target_to_current_alt();
pos_control.set_desired_velocity_z(inertial_nav.get_velocity_z());
}
// initialise targets
guided_angle_state.update_time_ms = millis();
guided_angle_state.roll_cd = ahrs.roll_sensor;
guided_angle_state.pitch_cd = ahrs.pitch_sensor;
guided_angle_state.yaw_cd = ahrs.yaw_sensor;
guided_angle_state.climb_rate_cms = 0.0f;
guided_angle_state.yaw_rate_cds = 0.0f;
guided_angle_state.use_yaw_rate = false;
// pilot always controls yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// rtl_climb_start - initialise climb to RTL altitude
void Copter::rtl_climb_start()
{
rtl_state = RTL_InitialClimb;
rtl_state_complete = false;
rtl_alt = get_RTL_alt();
// initialise waypoint and spline controller
wp_nav.wp_and_spline_init();
// get horizontal stopping point
Vector3f destination;
wp_nav.get_wp_stopping_point_xy(destination);
#if AC_RALLY == ENABLED
// rally_point.alt will be the altitude of the nearest rally point or the RTL_ALT. uses absolute altitudes
Location rally_point = rally.calc_best_rally_or_home_location(current_loc, rtl_alt+ahrs.get_home().alt);
rally_point.alt -= ahrs.get_home().alt; // convert to altitude above home
rally_point.alt = max(rally_point.alt, current_loc.alt); // ensure we do not descend before reaching home
destination.z = pv_alt_above_origin(rally_point.alt);
#else
destination.z = pv_alt_above_origin(rtl_alt);
#endif
// set the destination
wp_nav.set_wp_destination(destination);
wp_nav.set_fast_waypoint(true);
// hold current yaw during initial climb
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// guided_takeoff_start - initialises waypoint controller to implement take-off
bool Copter::guided_takeoff_start(float final_alt_above_home)
{
guided_mode = Guided_TakeOff;
// initialise wpnav destination
Location_Class target_loc = current_loc;
target_loc.set_alt_cm(final_alt_above_home, Location_Class::ALT_FRAME_ABOVE_HOME);
if (!wp_nav.set_wp_destination(target_loc)) {
// failure to set destination can only be because of missing terrain data
Log_Write_Error(ERROR_SUBSYSTEM_NAVIGATION, ERROR_CODE_FAILED_TO_SET_DESTINATION);
// failure is propagated to GCS with NAK
return false;
}
// initialise yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
// clear i term when we're taking off
set_throttle_takeoff();
// get initial alt for WP_NAVALT_MIN
auto_takeoff_set_start_alt();
return true;
}
// rtl_climb_start - initialise climb to RTL altitude
void Copter::rtl_climb_start()
{
rtl_state = RTL_InitialClimb;
rtl_state_complete = false;
// initialise waypoint and spline controller
wp_nav.wp_and_spline_init();
// RTL_SPEED == 0 means use WPNAV_SPEED
if (g.rtl_speed_cms != 0) {
wp_nav.set_speed_xy(g.rtl_speed_cms);
}
// set the destination
if (!wp_nav.set_wp_destination(rtl_path.climb_target)) {
// this should not happen because rtl_build_path will have checked terrain data was available
Log_Write_Error(ERROR_SUBSYSTEM_NAVIGATION, ERROR_CODE_FAILED_TO_SET_DESTINATION);
set_mode(LAND, MODE_REASON_TERRAIN_FAILSAFE);
return;
}
wp_nav.set_fast_waypoint(true);
// hold current yaw during initial climb
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// auto_init - initialise auto controller
bool Copter::auto_init(bool ignore_checks)
{
if ((position_ok() && mission.num_commands() > 1) || ignore_checks) {
auto_mode = Auto_Loiter;
// reject switching to auto mode if landed with motors armed but first command is not a takeoff (reduce change of flips)
if (motors.armed() && ap.land_complete && !mission.starts_with_takeoff_cmd()) {
gcs_send_text(MAV_SEVERITY_CRITICAL, "Auto: Missing Takeoff Cmd");
return false;
}
// stop ROI from carrying over from previous runs of the mission
// To-Do: reset the yaw as part of auto_wp_start when the previous command was not a wp command to remove the need for this special ROI check
if (auto_yaw_mode == AUTO_YAW_ROI) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// initialise waypoint and spline controller
wp_nav.wp_and_spline_init();
// clear guided limits
guided_limit_clear();
// start/resume the mission (based on MIS_RESTART parameter)
mission.start_or_resume();
return true;
}else{
return false;
}
}
// set_auto_yaw_look_at_heading - sets the yaw look at heading for auto mode
void Copter::set_auto_yaw_look_at_heading(float angle_deg, float turn_rate_dps, int8_t direction, uint8_t relative_angle)
{
// get current yaw target
int32_t curr_yaw_target = attitude_control.get_att_target_euler_cd().z;
// get final angle, 1 = Relative, 0 = Absolute
if (relative_angle == 0) {
// absolute angle
yaw_look_at_heading = wrap_360_cd(angle_deg * 100);
} else {
// relative angle
if (direction < 0) {
angle_deg = -angle_deg;
}
yaw_look_at_heading = wrap_360_cd((angle_deg*100+curr_yaw_target));
}
// get turn speed
if (is_zero(turn_rate_dps)) {
// default to regular auto slew rate
yaw_look_at_heading_slew = AUTO_YAW_SLEW_RATE;
}else{
int32_t turn_rate = (wrap_180_cd(yaw_look_at_heading - curr_yaw_target) / 100) / turn_rate_dps;
yaw_look_at_heading_slew = constrain_int32(turn_rate, 1, 360); // deg / sec
}
// set yaw mode
set_auto_yaw_mode(AUTO_YAW_LOOK_AT_HEADING);
// TO-DO: restore support for clockwise and counter clockwise rotation held in cmd.content.yaw.direction. 1 = clockwise, -1 = counterclockwise
}
// initialise guided mode's posvel controller
void Sub::guided_posvel_control_start()
{
// set guided_mode to velocity controller
guided_mode = Guided_PosVel;
pos_control.init_xy_controller();
// set speed and acceleration from wpnav's speed and acceleration
pos_control.set_max_speed_xy(wp_nav.get_speed_xy());
pos_control.set_max_accel_xy(wp_nav.get_wp_acceleration());
const Vector3f& curr_pos = inertial_nav.get_position();
const Vector3f& curr_vel = inertial_nav.get_velocity();
// set target position and velocity to current position and velocity
pos_control.set_xy_target(curr_pos.x, curr_pos.y);
pos_control.set_desired_velocity_xy(curr_vel.x, curr_vel.y);
// set vertical speed and acceleration
pos_control.set_max_speed_z(wp_nav.get_speed_down(), wp_nav.get_speed_up());
pos_control.set_max_accel_z(wp_nav.get_accel_z());
// pilot always controls yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// auto_init - initialise auto controller
bool Copter::auto_init(bool ignore_checks)
{
#if FRAME_CONFIG == HELI_FRAME
// do not allow helis to enter Alt Hold if the Rotor Runup is not complete and current control mode has manual throttle control,
// as this will force the helicopter to descend.
if (!ignore_checks && mode_has_manual_throttle(control_mode) && !motors.rotor_runup_complete()){
return false;
}
#endif
if ((position_ok() && mission.num_commands() > 1) || ignore_checks) {
auto_mode = Auto_Loiter;
// stop ROI from carrying over from previous runs of the mission
// To-Do: reset the yaw as part of auto_wp_start when the previous command was not a wp command to remove the need for this special ROI check
if (auto_yaw_mode == AUTO_YAW_ROI) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// initialise waypoint and spline controller
wp_nav.wp_and_spline_init();
// clear guided limits
guided_limit_clear();
// start/resume the mission (based on MIS_RESTART parameter)
mission.start_or_resume();
return true;
}else{
return false;
}
}
// rtl_climb_return_descent_run - implements the initial climb, return home and descent portions of RTL which all rely on the wp controller
// called by rtl_run at 100hz or more
void Copter::rtl_loiterathome_run()
{
// if not auto armed or motor interlock not enabled set throttle to zero and exit immediately
if (!motors.armed() || !ap.auto_armed || !motors.get_interlock()) {
#if FRAME_CONFIG == HELI_FRAME // Helicopters always stabilize roll/pitch/yaw
// call attitude controller
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(0, 0, 0, get_smoothing_gain());
attitude_control.set_throttle_out(0,false,g.throttle_filt);
#else
motors.set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED);
// multicopters do not stabilize roll/pitch/yaw when disarmed
// reset attitude control targets
attitude_control.set_throttle_out_unstabilized(0,true,g.throttle_filt);
#endif
// To-Do: re-initialise wpnav targets
return;
}
// process pilot's yaw input
float target_yaw_rate = 0;
if (!failsafe.radio) {
// get pilot's desired yaw rate
target_yaw_rate = get_pilot_desired_yaw_rate(channel_yaw->get_control_in());
if (!is_zero(target_yaw_rate)) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// set motors to full range
motors.set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
// run waypoint controller
failsafe_terrain_set_status(wp_nav.update_wpnav());
// call z-axis position controller (wpnav should have already updated it's alt target)
pos_control.update_z_controller();
// call attitude controller
if (auto_yaw_mode == AUTO_YAW_HOLD) {
// roll & pitch from waypoint controller, yaw rate from pilot
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(wp_nav.get_roll(), wp_nav.get_pitch(), target_yaw_rate, get_smoothing_gain());
}else{
// roll, pitch from waypoint controller, yaw heading from auto_heading()
attitude_control.input_euler_angle_roll_pitch_yaw(wp_nav.get_roll(), wp_nav.get_pitch(), get_auto_heading(),true, get_smoothing_gain());
}
// check if we've completed this stage of RTL
if ((millis() - rtl_loiter_start_time) >= (uint32_t)g.rtl_loiter_time.get()) {
if (auto_yaw_mode == AUTO_YAW_RESETTOARMEDYAW) {
// check if heading is within 2 degrees of heading when vehicle was armed
if (labs(wrap_180_cd(ahrs.yaw_sensor-initial_armed_bearing)) <= 200) {
rtl_state_complete = true;
}
} else {
// we have loitered long enough
rtl_state_complete = true;
}
}
}
// verify_yaw - return true if we have reached the desired heading
bool Sub::verify_yaw()
{
// set yaw mode if it has been changed (the waypoint controller often retakes control of yaw as it executes a new waypoint command)
if (auto_yaw_mode != AUTO_YAW_LOOK_AT_HEADING) {
set_auto_yaw_mode(AUTO_YAW_LOOK_AT_HEADING);
}
// check if we are within 2 degrees of the target heading
return (fabsf(wrap_180_cd(ahrs.yaw_sensor-yaw_look_at_heading)) <= 200);
}
// rtl_return_start - initialise return to home
void Copter::rtl_return_start()
{
rtl_state = RTL_ReturnHome;
rtl_state_complete = false;
wp_nav.set_wp_destination(rtl_path.return_target);
// initialise yaw to point home (maybe)
set_auto_yaw_mode(get_default_auto_yaw_mode(true));
}
// guided_init - initialise guided controller
bool Sub::guided_init(bool ignore_checks)
{
if (!position_ok() && !ignore_checks) {
return false;
}
// initialise yaw
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
// start in position control mode
guided_pos_control_start();
return true;
}
// guided_init - initialise guided controller
bool Copter::guided_init(bool ignore_checks)
{
if (position_ok() || ignore_checks) {
// initialise yaw
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
// start in position control mode
guided_pos_control_start();
return true;
}else{
return false;
}
}
// auto_spline_run - runs the auto spline controller
// called by auto_run at 100hz or more
void Sub::auto_spline_run()
{
// if not armed set throttle to zero and exit immediately
if (!motors.armed()) {
// To-Do: reset waypoint origin to current location because vehicle is probably on the ground so we don't want it lurching left or right on take-off
// (of course it would be better if people just used take-off)
// Sub vehicles do not stabilize roll/pitch/yaw when disarmed
attitude_control.set_throttle_out_unstabilized(0,true,g.throttle_filt);
motors.set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED);
return;
}
// process pilot's yaw input
float target_yaw_rate = 0;
if (!failsafe.pilot_input) {
// get pilot's desired yaw rat
target_yaw_rate = get_pilot_desired_yaw_rate(channel_yaw->get_control_in());
if (!is_zero(target_yaw_rate)) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// set motors to full range
motors.set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
// run waypoint controller
wp_nav.update_spline();
float lateral_out, forward_out;
translate_wpnav_rp(lateral_out, forward_out);
// Send to forward/lateral outputs
motors.set_lateral(lateral_out);
motors.set_forward(forward_out);
// call z-axis position controller (wpnav should have already updated it's alt target)
pos_control.update_z_controller();
// get pilot desired lean angles
float target_roll, target_pitch;
get_pilot_desired_lean_angles(channel_roll->get_control_in(), channel_pitch->get_control_in(), target_roll, target_pitch, aparm.angle_max);
// call attitude controller
if (auto_yaw_mode == AUTO_YAW_HOLD) {
// roll & pitch from waypoint controller, yaw rate from pilot
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(target_roll, target_pitch, target_yaw_rate, get_smoothing_gain());
} else {
// roll, pitch from waypoint controller, yaw heading from auto_heading()
attitude_control.input_euler_angle_roll_pitch_yaw(target_roll, target_pitch, get_auto_heading(), true, get_smoothing_gain());
}
}
// auto_land_start - initialises controller to implement a landing
void Copter::auto_land_start(const Vector3f& destination)
{
auto_mode = Auto_Land;
// initialise loiter target destination
wp_nav.init_loiter_target(destination);
// initialise altitude target to stopping point
pos_control.set_target_to_stopping_point_z();
// initialise yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// rtl_return_start - initialise return to home
void Copter::rtl_return_start()
{
rtl_state = RTL_ReturnHome;
rtl_state_complete = false;
if (!wp_nav.set_wp_destination(rtl_path.return_target)) {
// failure must be caused by missing terrain data, restart RTL
rtl_restart_without_terrain();
}
// initialise yaw to point home (maybe)
set_auto_yaw_mode(get_default_auto_yaw_mode(true));
}
// auto_wp_start - initialises waypoint controller to implement flying to a particular destination
void Copter::auto_wp_start(const Vector3f& destination)
{
auto_mode = Auto_WP;
// initialise wpnav (no need to check return status because terrain data is not used)
wp_nav.set_wp_destination(destination, false);
// initialise yaw
// To-Do: reset the yaw only when the previous navigation command is not a WP. this would allow removing the special check for ROI
if (auto_yaw_mode != AUTO_YAW_ROI) {
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
}
}
// guided_vel_control_run - runs the guided velocity controller
// called from guided_run
void Copter::guided_vel_control_run()
{
// if not auto armed or motors not enabled set throttle to zero and exit immediately
if (!motors.armed() || !ap.auto_armed || !motors.get_interlock() || ap.land_complete) {
// initialise velocity controller
pos_control.init_vel_controller_xyz();
#if FRAME_CONFIG == HELI_FRAME // Helicopters always stabilize roll/pitch/yaw
// call attitude controller
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(0, 0, 0, get_smoothing_gain());
attitude_control.set_throttle_out(0,false,g.throttle_filt);
#else
motors.set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED);
// multicopters do not stabilize roll/pitch/yaw when disarmed
attitude_control.set_throttle_out_unstabilized(0,true,g.throttle_filt);
#endif
return;
}
// process pilot's yaw input
float target_yaw_rate = 0;
if (!failsafe.radio) {
// get pilot's desired yaw rate
target_yaw_rate = get_pilot_desired_yaw_rate(channel_yaw->get_control_in());
if (!is_zero(target_yaw_rate)) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// set motors to full range
motors.set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
// set velocity to zero if no updates received for 3 seconds
uint32_t tnow = millis();
if (tnow - vel_update_time_ms > GUIDED_POSVEL_TIMEOUT_MS && !pos_control.get_desired_velocity().is_zero()) {
guided_set_desired_velocity_with_accel_and_fence_limits(Vector3f(0.0f,0.0f,0.0f));
} else {
guided_set_desired_velocity_with_accel_and_fence_limits(guided_vel_target_cms);
}
// call velocity controller which includes z axis controller
pos_control.update_vel_controller_xyz(ekfNavVelGainScaler);
// call attitude controller
if (auto_yaw_mode == AUTO_YAW_HOLD) {
// roll & pitch from waypoint controller, yaw rate from pilot
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(pos_control.get_roll(), pos_control.get_pitch(), target_yaw_rate, get_smoothing_gain());
}else{
// roll, pitch from waypoint controller, yaw heading from auto_heading()
attitude_control.input_euler_angle_roll_pitch_yaw(pos_control.get_roll(), pos_control.get_pitch(), get_auto_heading(), true, get_smoothing_gain());
}
}
// guided_vel_control_run - runs the guided velocity controller
// called from guided_run
void Sub::guided_vel_control_run()
{
// ifmotors not enabled set throttle to zero and exit immediately
if (!motors.armed()) {
// initialise velocity controller
pos_control.init_vel_controller_xyz();
motors.set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED);
// Sub vehicles do not stabilize roll/pitch/yaw when disarmed
attitude_control.set_throttle_out_unstabilized(0,true,g.throttle_filt);
return;
}
// process pilot's yaw input
float target_yaw_rate = 0;
if (!failsafe.pilot_input) {
// get pilot's desired yaw rate
target_yaw_rate = get_pilot_desired_yaw_rate(channel_yaw->get_control_in());
if (!is_zero(target_yaw_rate)) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// set motors to full range
motors.set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
// set velocity to zero if no updates received for 3 seconds
uint32_t tnow = AP_HAL::millis();
if (tnow - vel_update_time_ms > GUIDED_POSVEL_TIMEOUT_MS && !pos_control.get_desired_velocity().is_zero()) {
pos_control.set_desired_velocity(Vector3f(0,0,0));
}
// call velocity controller which includes z axis controller
pos_control.update_vel_controller_xyz(ekfNavVelGainScaler);
float lateral_out, forward_out;
translate_pos_control_rp(lateral_out, forward_out);
// Send to forward/lateral outputs
motors.set_lateral(lateral_out);
motors.set_forward(forward_out);
// call attitude controller
if (auto_yaw_mode == AUTO_YAW_HOLD) {
// roll & pitch from waypoint controller, yaw rate from pilot
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(channel_roll->get_control_in(), channel_pitch->get_control_in(), target_yaw_rate);
} else {
// roll, pitch from waypoint controller, yaw heading from auto_heading()
attitude_control.input_euler_angle_roll_pitch_yaw(channel_roll->get_control_in(), channel_pitch->get_control_in(), get_auto_heading(), true);
}
}
// auto_land_start - initialises controller to implement a landing
void Copter::auto_land_start(const Vector3f& destination)
{
auto_mode = Auto_Land;
// initialise loiter target destination
wp_nav.init_loiter_target(destination);
// initialise position and desired velocity
pos_control.set_alt_target(inertial_nav.get_altitude());
pos_control.set_desired_velocity_z(inertial_nav.get_velocity_z());
// initialise yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// verify_yaw - return true if we have reached the desired heading
bool Copter::ModeAuto::verify_yaw()
{
// set yaw mode if it has been changed (the waypoint controller often retakes control of yaw as it executes a new waypoint command)
if (auto_yaw_mode != AUTO_YAW_LOOK_AT_HEADING) {
set_auto_yaw_mode(AUTO_YAW_LOOK_AT_HEADING);
}
// check if we are within 2 degrees of the target heading
if (labs(wrap_180_cd(ahrs.yaw_sensor-_copter.yaw_look_at_heading)) <= 200) {
return true;
}else{
return false;
}
}
// auto_circle_movetoedge_start - initialise waypoint controller to move to edge of a circle with it's center at the specified location
// we assume the caller has set the circle's circle with circle_nav.set_center()
// we assume the caller has performed all required GPS_ok checks
void Copter::auto_circle_movetoedge_start()
{
// check our distance from edge of circle
Vector3f circle_edge;
circle_nav.get_closest_point_on_circle(circle_edge);
// set the state to move to the edge of the circle
auto_mode = Auto_CircleMoveToEdge;
// initialise wpnav to move to edge of circle
wp_nav.set_wp_destination(circle_edge);
// if we are outside the circle, point at the edge, otherwise hold yaw
const Vector3f &curr_pos = inertial_nav.get_position();
const Vector3f &circle_center = circle_nav.get_center();
float dist_to_center = pythagorous2(circle_center.x - curr_pos.x, circle_center.y - curr_pos.y);
if (dist_to_center > circle_nav.get_radius() && dist_to_center > 500) {
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
} else {
// vehicle is within circle so hold yaw to avoid spinning as we move to edge of circle
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// rtl_descent_start - initialise descent to final alt
void Copter::rtl_descent_start()
{
rtl_state = RTL_FinalDescent;
rtl_state_complete = false;
// Set wp navigation target to above home
wp_nav.init_loiter_target(wp_nav.get_wp_destination());
// initialise altitude target to stopping point
pos_control.set_target_to_stopping_point_z();
// initialise yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
// rtl_climb_return_run - implements the initial climb, return home and descent portions of RTL which all rely on the wp controller
// called by rtl_run at 100hz or more
void Copter::rtl_climb_return_run()
{
// if not auto armed or motor interlock not enabled set throttle to zero and exit immediately
if (!motors.armed() || !ap.auto_armed || !motors.get_interlock()) {
#if FRAME_CONFIG == HELI_FRAME // Helicopters always stabilize roll/pitch/yaw
// call attitude controller
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(0, 0, 0, get_smoothing_gain());
attitude_control.set_throttle_out(0,false,g.throttle_filt);
#else
motors.set_desired_spool_state(AP_Motors::DESIRED_SPIN_WHEN_ARMED);
// multicopters do not stabilize roll/pitch/yaw when disarmed
// reset attitude control targets
attitude_control.set_throttle_out_unstabilized(0,true,g.throttle_filt);
#endif
// To-Do: re-initialise wpnav targets
return;
}
// process pilot's yaw input
float target_yaw_rate = 0;
if (!failsafe.radio) {
// get pilot's desired yaw rate
target_yaw_rate = get_pilot_desired_yaw_rate(channel_yaw->get_control_in());
if (!is_zero(target_yaw_rate)) {
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
}
// set motors to full range
motors.set_desired_spool_state(AP_Motors::DESIRED_THROTTLE_UNLIMITED);
// run waypoint controller
failsafe_terrain_set_status(wp_nav.update_wpnav());
// call z-axis position controller (wpnav should have already updated it's alt target)
pos_control.update_z_controller();
// call attitude controller
if (auto_yaw_mode == AUTO_YAW_HOLD) {
// roll & pitch from waypoint controller, yaw rate from pilot
attitude_control.input_euler_angle_roll_pitch_euler_rate_yaw(wp_nav.get_roll(), wp_nav.get_pitch(), target_yaw_rate, get_smoothing_gain());
}else{
// roll, pitch from waypoint controller, yaw heading from auto_heading()
attitude_control.input_euler_angle_roll_pitch_yaw(wp_nav.get_roll(), wp_nav.get_pitch(), get_auto_heading(),true, get_smoothing_gain());
}
// check if we've completed this stage of RTL
rtl_state_complete = wp_nav.reached_wp_destination();
}
// auto_takeoff_start - initialises waypoint controller to implement take-off
void Copter::auto_takeoff_start(float final_alt_above_home)
{
auto_mode = Auto_TakeOff;
// initialise wpnav destination
Vector3f target_pos = inertial_nav.get_position();
target_pos.z = pv_alt_above_origin(final_alt_above_home);
wp_nav.set_wp_destination(target_pos);
// initialise yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
// clear i term when we're taking off
set_throttle_takeoff();
}
// auto_spline_start - initialises waypoint controller to implement flying to a particular destination using the spline controller
// seg_end_type can be SEGMENT_END_STOP, SEGMENT_END_STRAIGHT or SEGMENT_END_SPLINE. If Straight or Spline the next_destination should be provided
void Copter::auto_spline_start(const Vector3f& destination, bool stopped_at_start,
AC_WPNav::spline_segment_end_type seg_end_type,
const Vector3f& next_destination)
{
auto_mode = Auto_Spline;
// initialise wpnav
wp_nav.set_spline_destination(destination, stopped_at_start, seg_end_type, next_destination);
// initialise yaw
// To-Do: reset the yaw only when the previous navigation command is not a WP. this would allow removing the special check for ROI
if (auto_yaw_mode != AUTO_YAW_ROI) {
set_auto_yaw_mode(get_default_auto_yaw_mode(false));
}
}
// rtl_loiterathome_start - initialise controllers to loiter over home
void Copter::rtl_land_start()
{
rtl_state = RTL_Land;
rtl_state_complete = false;
// Set wp navigation target to above home
wp_nav.init_loiter_target(wp_nav.get_wp_destination());
// initialise position and desired velocity
pos_control.set_alt_target(inertial_nav.get_altitude());
pos_control.set_desired_velocity_z(inertial_nav.get_velocity_z());
// initialise yaw
set_auto_yaw_mode(AUTO_YAW_HOLD);
}
