From e9bcc0a2624c77c6f71bb926347e85b8c7592e34 Mon Sep 17 00:00:00 2001 From: Simon Wilks Date: Thu, 29 Jan 2015 14:05:48 +0100 Subject: Add yaw modes that define multirotor heading behaviour during missions. --- src/modules/navigator/mission.cpp | 72 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 69 insertions(+), 3 deletions(-) (limited to 'src/modules/navigator/mission.cpp') diff --git a/src/modules/navigator/mission.cpp b/src/modules/navigator/mission.cpp index 9b0a092da..b52b12ce7 100644 --- a/src/modules/navigator/mission.cpp +++ b/src/modules/navigator/mission.cpp @@ -39,6 +39,7 @@ * @author Thomas Gubler * @author Anton Babushkin * @author Ban Siesta + * @author Simon Wilks */ #include @@ -68,6 +69,7 @@ Mission::Mission(Navigator *navigator, const char *name) : _param_takeoff_alt(this, "MIS_TAKEOFF_ALT", false), _param_dist_1wp(this, "MIS_DIST_1WP", false), _param_altmode(this, "MIS_ALTMODE", false), + _param_yawmode(this, "MIS_YAWMODE", false), _onboard_mission({0}), _offboard_mission({0}), _current_onboard_mission_index(-1), @@ -80,6 +82,7 @@ Mission::Mission(Navigator *navigator, const char *name) : _missionFeasiblityChecker(), _min_current_sp_distance_xy(FLT_MAX), _mission_item_previous_alt(NAN), + _on_arrival_yaw(NAN), _distance_current_previous(0.0f) { /* load initial params */ @@ -166,6 +169,13 @@ Mission::on_active() _navigator->set_can_loiter_at_sp(true); } } + + /* see if we need to update the current yaw heading for rotary wing types */ + if (_navigator->get_vstatus()->is_rotary_wing + && _param_yawmode.get() != MISSION_YAWMODE_NONE + && _mission_type != MISSION_TYPE_NONE) { + heading_sp_update(); + } } void @@ -275,7 +285,7 @@ Mission::check_dist_1wp() &mission_item, sizeof(mission_item_s)) == sizeof(mission_item_s)) { /* check only items with valid lat/lon */ - if ( mission_item.nav_cmd == NAV_CMD_WAYPOINT || + if ( mission_item.nav_cmd == NAV_CMD_WAYPOINT || mission_item.nav_cmd == NAV_CMD_LOITER_TIME_LIMIT || mission_item.nav_cmd == NAV_CMD_LOITER_TURN_COUNT || mission_item.nav_cmd == NAV_CMD_LOITER_UNLIMITED || @@ -362,7 +372,6 @@ Mission::set_mission_items() mavlink_log_critical(_navigator->get_mavlink_fd(), "offboard mission now running"); } _mission_type = MISSION_TYPE_OFFBOARD; - } else { /* no mission available or mission finished, switch to loiter */ if (_mission_type != MISSION_TYPE_NONE) { @@ -396,6 +405,10 @@ Mission::set_mission_items() return; } + if (pos_sp_triplet->current.valid) { + _on_arrival_yaw = _mission_item.yaw; + } + /* do takeoff on first waypoint for rotary wing vehicles */ if (_navigator->get_vstatus()->is_rotary_wing) { /* force takeoff if landed (additional protection) */ @@ -442,6 +455,7 @@ Mission::set_mission_items() _mission_item.nav_cmd = NAV_CMD_TAKEOFF; _mission_item.lat = _navigator->get_global_position()->lat; _mission_item.lon = _navigator->get_global_position()->lon; + _mission_item.yaw = NAN; _mission_item.altitude = takeoff_alt; _mission_item.altitude_is_relative = false; _mission_item.autocontinue = true; @@ -481,7 +495,6 @@ Mission::set_mission_items() if (read_mission_item(_mission_type == MISSION_TYPE_ONBOARD, false, &mission_item_next)) { /* got next mission item, update setpoint triplet */ mission_item_to_position_setpoint(&mission_item_next, &pos_sp_triplet->next); - } else { /* next mission item is not available */ pos_sp_triplet->next.valid = false; @@ -503,6 +516,59 @@ Mission::set_mission_items() _navigator->set_position_setpoint_triplet_updated(); } +void +Mission::heading_sp_update() +{ + if (_takeoff) { + /* we don't want to be yawing during takeoff */ + return; + } + + struct position_setpoint_triplet_s *pos_sp_triplet = _navigator->get_position_setpoint_triplet(); + + /* Don't change setpoint if last and current waypoint are not valid */ + if (!pos_sp_triplet->previous.valid || !pos_sp_triplet->current.valid || + !isfinite(_on_arrival_yaw)) { + return; + } + + /* Don't do FOH for landing and takeoff waypoints, the ground may be near + * and the FW controller has a custom landing logic */ + if (_mission_item.nav_cmd == NAV_CMD_LAND || _mission_item.nav_cmd == NAV_CMD_TAKEOFF) { + return; + } + + /* set yaw angle for the waypoint iff a loiter time has been specified */ + if (_waypoint_position_reached && _mission_item.time_inside > 0.0f) { + _mission_item.yaw = _on_arrival_yaw; + /* always keep the front of the rotary wing pointing to the next waypoint */ + } else if (_param_yawmode.get() == MISSION_YAWMODE_FRONT_TO_WAYPOINT) { + _mission_item.yaw = get_bearing_to_next_waypoint( + _navigator->get_global_position()->lat, + _navigator->get_global_position()->lon, + _mission_item.lat, + _mission_item.lon); + /* always keep the back of the rotary wing pointing towards home */ + } else if (_param_yawmode.get() == MISSION_YAWMODE_FRONT_TO_HOME) { + _mission_item.yaw = get_bearing_to_next_waypoint( + _navigator->get_global_position()->lat, + _navigator->get_global_position()->lon, + _navigator->get_home_position()->lat, + _navigator->get_home_position()->lon); + /* always keep the back of the rotary wing pointing towards home */ + } else if (_param_yawmode.get() == MISSION_YAWMODE_BACK_TO_HOME) { + _mission_item.yaw = _wrap_pi(get_bearing_to_next_waypoint( + _navigator->get_global_position()->lat, + _navigator->get_global_position()->lon, + _navigator->get_home_position()->lat, + _navigator->get_home_position()->lon) + M_PI_F); + } + + mission_item_to_position_setpoint(&_mission_item, &pos_sp_triplet->current); + _navigator->set_position_setpoint_triplet_updated(); +} + + void Mission::altitude_sp_foh_update() { -- cgit v1.2.3