/**************************************************************************** * * Copyright (c) 2013, 2014 PX4 Development Team. All rights reserved. * Author: @author Lorenz Meier * @author Jean Cyr * @author Julian Oes * @author Anton Babushkin * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name PX4 nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /** * @file navigator_main.c * Implementation of the main navigation state machine. * * Handles missions, geo fencing and failsafe navigation behavior. * Published the mission item triplet for the position controller. * * @author Lorenz Meier * @author Jean Cyr * @author Julian Oes * @author Anton Babushkin */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "navigator_state.h" #include "navigator_mission.h" #include "mission_feasibility_checker.h" #include "geofence.h" /* oddly, ERROR is not defined for c++ */ #ifdef ERROR # undef ERROR #endif static const int ERROR = -1; /** * navigator app start / stop handling function * * @ingroup apps */ extern "C" __EXPORT int navigator_main(int argc, char *argv[]); class Navigator : public StateTable { public: /** * Constructor */ Navigator(); /** * Destructor, also kills the navigators task. */ ~Navigator(); /** * Start the navigator task. * * @return OK on success. */ int start(); /** * Display the navigator status. */ void status(); /** * Add point to geofence */ void add_fence_point(int argc, char *argv[]); /** * Load fence from file */ void load_fence_from_file(const char *filename); private: bool _task_should_exit; /**< if true, sensor task should exit */ int _navigator_task; /**< task handle for sensor task */ int _mavlink_fd; int _global_pos_sub; /**< global position subscription */ int _home_pos_sub; /**< home position subscription */ int _vstatus_sub; /**< vehicle status subscription */ int _params_sub; /**< notification of parameter updates */ int _offboard_mission_sub; /**< notification of offboard mission updates */ int _onboard_mission_sub; /**< notification of onboard mission updates */ int _capabilities_sub; /**< notification of vehicle capabilities updates */ int _control_mode_sub; /**< vehicle control mode subscription */ orb_advert_t _pos_sp_triplet_pub; /**< publish position setpoint triplet */ orb_advert_t _mission_result_pub; /**< publish mission result topic */ struct vehicle_status_s _vstatus; /**< vehicle status */ struct vehicle_control_mode_s _control_mode; /**< vehicle control mode */ struct vehicle_global_position_s _global_pos; /**< global vehicle position */ struct home_position_s _home_pos; /**< home position for RTL */ struct position_setpoint_triplet_s _pos_sp_triplet; /**< triplet of position setpoints */ struct mission_result_s _mission_result; /**< mission result for commander/mavlink */ struct mission_item_s _mission_item; /**< current mission item */ bool _mission_item_valid; /**< current mission item valid */ perf_counter_t _loop_perf; /**< loop performance counter */ Geofence _geofence; bool _geofence_violation_warning_sent; bool _fence_valid; /**< flag if fence is valid */ bool _inside_fence; /**< vehicle is inside fence */ struct navigation_capabilities_s _nav_caps; class Mission _mission; bool _global_pos_valid; /**< track changes of global_position.global_valid flag */ bool _reset_loiter_pos; /**< if true then loiter position should be set to current position */ bool _waypoint_position_reached; bool _waypoint_yaw_reached; uint64_t _time_first_inside_orbit; bool _need_takeoff; /**< if need to perform vertical takeoff before going to waypoint (only for MISSION mode and VTOL vehicles) */ bool _do_takeoff; /**< vertical takeoff state, current mission item is generated by navigator (only for MISSION mode and VTOL vehicles) */ MissionFeasibilityChecker missionFeasiblityChecker; uint64_t _set_nav_state_timestamp; /**< timestamp of last handled navigation state request */ bool _pos_sp_triplet_updated; char *nav_states_str[NAV_STATE_MAX]; struct { float min_altitude; float acceptance_radius; float loiter_radius; int onboard_mission_enabled; float takeoff_alt; float land_alt; float rtl_alt; float rtl_land_delay; } _parameters; /**< local copies of parameters */ struct { param_t min_altitude; param_t acceptance_radius; param_t loiter_radius; param_t onboard_mission_enabled; param_t takeoff_alt; param_t land_alt; param_t rtl_alt; param_t rtl_land_delay; } _parameter_handles; /**< handles for parameters */ enum Event { EVENT_NONE_REQUESTED, EVENT_READY_REQUESTED, EVENT_LOITER_REQUESTED, EVENT_MISSION_REQUESTED, EVENT_RTL_REQUESTED, EVENT_LAND_REQUESTED, EVENT_MISSION_CHANGED, EVENT_HOME_POSITION_CHANGED, MAX_EVENT }; /** * State machine transition table */ static StateTable::Tran const myTable[NAV_STATE_MAX][MAX_EVENT]; enum RTLState { RTL_STATE_NONE = 0, RTL_STATE_CLIMB, RTL_STATE_RETURN, RTL_STATE_DESCEND }; enum RTLState _rtl_state; /** * Update our local parameter cache. */ void parameters_update(); /** * Retrieve global position */ void global_position_update(); /** * Retrieve home position */ void home_position_update(); /** * Retreive navigation capabilities */ void navigation_capabilities_update(); /** * Retrieve offboard mission. */ void offboard_mission_update(bool isrotaryWing); /** * Retrieve onboard mission. */ void onboard_mission_update(); /** * Retrieve vehicle status */ void vehicle_status_update(); /** * Retrieve vehicle control mode */ void vehicle_control_mode_update(); /** * Shim for calling task_main from task_create. */ static void task_main_trampoline(int argc, char *argv[]); /** * Main sensor collection task. */ void task_main() __attribute__((noreturn)); void publish_safepoints(unsigned points); /** * Functions that are triggered when a new state is entered. */ void start_none(); void start_ready(); void start_loiter(); void start_mission(); void start_rtl(); void start_land(); void start_land_home(); /** * Guards offboard mission */ bool offboard_mission_available(unsigned relative_index); /** * Guards onboard mission */ bool onboard_mission_available(unsigned relative_index); /** * Check if current mission item has been reached. */ bool check_mission_item_reached(); /** * Perform actions when current mission item reached. */ void on_mission_item_reached(); /** * Move to next waypoint */ void set_mission_item(); /** * Switch to next RTL state */ void set_rtl_item(); /** * Set position setpoint for mission item */ void position_setpoint_from_mission_item(position_setpoint_s *sp, mission_item_s *item); /** * Helper function to get a takeoff item */ void get_takeoff_setpoint(position_setpoint_s *pos_sp); /** * Publish a new mission item triplet for position controller */ void publish_position_setpoint_triplet(); }; namespace navigator { /* oddly, ERROR is not defined for c++ */ #ifdef ERROR # undef ERROR #endif static const int ERROR = -1; Navigator *g_navigator; } Navigator::Navigator() : /* state machine transition table */ StateTable(&myTable[0][0], NAV_STATE_MAX, MAX_EVENT), _task_should_exit(false), _navigator_task(-1), _mavlink_fd(-1), /* subscriptions */ _global_pos_sub(-1), _home_pos_sub(-1), _vstatus_sub(-1), _control_mode_sub(-1), _params_sub(-1), _offboard_mission_sub(-1), _onboard_mission_sub(-1), _capabilities_sub(-1), /* publications */ _pos_sp_triplet_pub(-1), _mission_result_pub(-1), /* performance counters */ _loop_perf(perf_alloc(PC_ELAPSED, "navigator")), /* states */ _rtl_state(RTL_STATE_NONE), _fence_valid(false), _inside_fence(true), _mission(), _global_pos_valid(false), _reset_loiter_pos(true), _waypoint_position_reached(false), _waypoint_yaw_reached(false), _time_first_inside_orbit(0), _set_nav_state_timestamp(0), _mission_item_valid(false), _need_takeoff(true), _do_takeoff(false), _pos_sp_triplet_updated(false), _geofence_violation_warning_sent(false) { _parameter_handles.min_altitude = param_find("NAV_MIN_ALT"); _parameter_handles.acceptance_radius = param_find("NAV_ACCEPT_RAD"); _parameter_handles.loiter_radius = param_find("NAV_LOITER_RAD"); _parameter_handles.onboard_mission_enabled = param_find("NAV_ONB_MIS_EN"); _parameter_handles.takeoff_alt = param_find("NAV_TAKEOFF_ALT"); _parameter_handles.land_alt = param_find("NAV_LAND_ALT"); _parameter_handles.rtl_alt = param_find("NAV_RTL_ALT"); _parameter_handles.rtl_land_delay = param_find("NAV_RTL_LAND_T"); memset(&_pos_sp_triplet, 0, sizeof(struct position_setpoint_triplet_s)); memset(&_mission_result, 0, sizeof(struct mission_result_s)); memset(&_mission_item, 0, sizeof(struct mission_item_s)); memset(&nav_states_str, 0, sizeof(nav_states_str)); nav_states_str[0] = "NONE"; nav_states_str[1] = "READY"; nav_states_str[2] = "LOITER"; nav_states_str[3] = "MISSION"; nav_states_str[4] = "RTL"; nav_states_str[5] = "LAND"; /* Initialize state machine */ myState = NAV_STATE_NONE; start_none(); } Navigator::~Navigator() { if (_navigator_task != -1) { /* task wakes up every 100ms or so at the longest */ _task_should_exit = true; /* wait for a second for the task to quit at our request */ unsigned i = 0; do { /* wait 20ms */ usleep(20000); /* if we have given up, kill it */ if (++i > 50) { task_delete(_navigator_task); break; } } while (_navigator_task != -1); } navigator::g_navigator = nullptr; } void Navigator::parameters_update() { /* read from param to clear updated flag */ struct parameter_update_s update; orb_copy(ORB_ID(parameter_update), _params_sub, &update); param_get(_parameter_handles.min_altitude, &(_parameters.min_altitude)); param_get(_parameter_handles.acceptance_radius, &(_parameters.acceptance_radius)); param_get(_parameter_handles.loiter_radius, &(_parameters.loiter_radius)); param_get(_parameter_handles.onboard_mission_enabled, &(_parameters.onboard_mission_enabled)); param_get(_parameter_handles.takeoff_alt, &(_parameters.takeoff_alt)); param_get(_parameter_handles.land_alt, &(_parameters.land_alt)); param_get(_parameter_handles.rtl_alt, &(_parameters.rtl_alt)); param_get(_parameter_handles.rtl_land_delay, &(_parameters.rtl_land_delay)); _mission.set_onboard_mission_allowed((bool)_parameter_handles.onboard_mission_enabled); _geofence.updateParams(); } void Navigator::global_position_update() { orb_copy(ORB_ID(vehicle_global_position), _global_pos_sub, &_global_pos); } void Navigator::home_position_update() { orb_copy(ORB_ID(home_position), _home_pos_sub, &_home_pos); } void Navigator::navigation_capabilities_update() { orb_copy(ORB_ID(navigation_capabilities), _capabilities_sub, &_nav_caps); } void Navigator::offboard_mission_update(bool isrotaryWing) { struct mission_s offboard_mission; if (orb_copy(ORB_ID(mission), _offboard_mission_sub, &offboard_mission) == OK) { /* Check mission feasibility, for now do not handle the return value, * however warnings are issued to the gcs via mavlink from inside the MissionFeasiblityChecker */ dm_item_t dm_current; if (offboard_mission.dataman_id == 0) { dm_current = DM_KEY_WAYPOINTS_OFFBOARD_0; } else { dm_current = DM_KEY_WAYPOINTS_OFFBOARD_1; } missionFeasiblityChecker.checkMissionFeasible(isrotaryWing, dm_current, (size_t)offboard_mission.count, _geofence); _mission.set_offboard_dataman_id(offboard_mission.dataman_id); _mission.set_current_offboard_mission_index(offboard_mission.current_index); _mission.set_offboard_mission_count(offboard_mission.count); } else { _mission.set_current_offboard_mission_index(0); _mission.set_offboard_mission_count(0); } } void Navigator::onboard_mission_update() { struct mission_s onboard_mission; if (orb_copy(ORB_ID(mission), _onboard_mission_sub, &onboard_mission) == OK) { _mission.set_current_onboard_mission_index(onboard_mission.current_index); _mission.set_onboard_mission_count(onboard_mission.count); } else { _mission.set_current_onboard_mission_index(0); _mission.set_onboard_mission_count(0); } } void Navigator::vehicle_status_update() { if (orb_copy(ORB_ID(vehicle_status), _vstatus_sub, &_vstatus) != OK) { /* in case the commander is not be running */ _vstatus.arming_state = ARMING_STATE_STANDBY; } } void Navigator::vehicle_control_mode_update() { if (orb_copy(ORB_ID(vehicle_control_mode), _control_mode_sub, &_control_mode) != OK) { /* in case the commander is not be running */ _control_mode.flag_control_auto_enabled = false; _control_mode.flag_armed = false; } } void Navigator::task_main_trampoline(int argc, char *argv[]) { navigator::g_navigator->task_main(); } void Navigator::task_main() { /* inform about start */ warnx("Initializing.."); fflush(stdout); _mavlink_fd = open(MAVLINK_LOG_DEVICE, 0); mavlink_log_info(_mavlink_fd, "[navigator] started"); /* Try to load the geofence: * if /fs/microsd/etc/geofence.txt load from this file * else clear geofence data in datamanager */ struct stat buffer; if (stat(GEOFENCE_FILENAME, &buffer) == 0) { warnx("Try to load geofence.txt"); _geofence.loadFromFile(GEOFENCE_FILENAME); } else { if (_geofence.clearDm() > 0) warnx("Geofence cleared"); else warnx("Could not clear geofence"); } /* * do subscriptions */ _global_pos_sub = orb_subscribe(ORB_ID(vehicle_global_position)); _offboard_mission_sub = orb_subscribe(ORB_ID(mission)); _onboard_mission_sub = orb_subscribe(ORB_ID(onboard_mission)); _capabilities_sub = orb_subscribe(ORB_ID(navigation_capabilities)); _vstatus_sub = orb_subscribe(ORB_ID(vehicle_status)); _control_mode_sub = orb_subscribe(ORB_ID(vehicle_control_mode)); _params_sub = orb_subscribe(ORB_ID(parameter_update)); _home_pos_sub = orb_subscribe(ORB_ID(home_position)); /* copy all topics first time */ vehicle_status_update(); vehicle_control_mode_update(); parameters_update(); global_position_update(); home_position_update(); navigation_capabilities_update(); offboard_mission_update(_vstatus.is_rotary_wing); onboard_mission_update(); /* rate limit position updates to 50 Hz */ orb_set_interval(_global_pos_sub, 20); unsigned prevState = NAV_STATE_NONE; hrt_abstime mavlink_open_time = 0; const hrt_abstime mavlink_open_interval = 500000; /* wakeup source(s) */ struct pollfd fds[8]; /* Setup of loop */ fds[0].fd = _params_sub; fds[0].events = POLLIN; fds[1].fd = _global_pos_sub; fds[1].events = POLLIN; fds[2].fd = _home_pos_sub; fds[2].events = POLLIN; fds[3].fd = _capabilities_sub; fds[3].events = POLLIN; fds[4].fd = _offboard_mission_sub; fds[4].events = POLLIN; fds[5].fd = _onboard_mission_sub; fds[5].events = POLLIN; fds[6].fd = _vstatus_sub; fds[6].events = POLLIN; fds[7].fd = _control_mode_sub; fds[7].events = POLLIN; while (!_task_should_exit) { /* wait for up to 100ms for data */ int pret = poll(&fds[0], (sizeof(fds) / sizeof(fds[0])), 100); /* timed out - periodic check for _task_should_exit, etc. */ if (pret == 0) { continue; } /* this is undesirable but not much we can do - might want to flag unhappy status */ if (pret < 0) { warn("poll error %d, %d", pret, errno); continue; } perf_begin(_loop_perf); if (_mavlink_fd < 0 && hrt_absolute_time() > mavlink_open_time) { /* try to reopen the mavlink log device with specified interval */ mavlink_open_time = hrt_abstime() + mavlink_open_interval; _mavlink_fd = open(MAVLINK_LOG_DEVICE, 0); } /* vehicle control mode updated */ if (fds[7].revents & POLLIN) { vehicle_control_mode_update(); } /* vehicle status updated */ if (fds[6].revents & POLLIN) { vehicle_status_update(); /* evaluate state machine from commander and set the navigator mode accordingly */ if (_control_mode.flag_armed && _control_mode.flag_control_auto_enabled) { bool stick_mode = false; if (!_vstatus.rc_signal_lost) { /* RC signal available, use control switches to set mode */ /* RETURN switch, overrides MISSION switch */ if (_vstatus.return_switch == RETURN_SWITCH_RETURN) { /* switch to RTL if not already landed after RTL and home position set */ if (!(_rtl_state == RTL_STATE_DESCEND && (myState == NAV_STATE_READY || myState == NAV_STATE_LAND || myState == NAV_STATE_LOITER)) && _vstatus.condition_home_position_valid) { dispatch(EVENT_RTL_REQUESTED); } stick_mode = true; } else { /* MISSION switch */ if (_vstatus.mission_switch == MISSION_SWITCH_LOITER) { dispatch(EVENT_LOITER_REQUESTED); stick_mode = true; } else if (_vstatus.mission_switch == MISSION_SWITCH_MISSION) { /* switch to mission only if available */ if (_mission.current_mission_available()) { dispatch(EVENT_MISSION_REQUESTED); } else { dispatch(EVENT_LOITER_REQUESTED); } stick_mode = true; } if (!stick_mode && _vstatus.return_switch == RETURN_SWITCH_NORMAL && myState == NAV_STATE_RTL) { /* RETURN switch is in normal mode, no MISSION switch mapped, interrupt if in RTL state */ dispatch(EVENT_LOITER_REQUESTED); stick_mode = true; } } } if (!stick_mode) { if (_vstatus.set_nav_state_timestamp != _set_nav_state_timestamp) { /* commander requested new navigation mode, try to set it */ _set_nav_state_timestamp = _vstatus.set_nav_state_timestamp; switch (_vstatus.set_nav_state) { case NAV_STATE_NONE: /* nothing to do */ break; case NAV_STATE_LOITER: dispatch(EVENT_LOITER_REQUESTED); break; case NAV_STATE_MISSION: if (_mission.current_mission_available()) { dispatch(EVENT_MISSION_REQUESTED); } else { dispatch(EVENT_LOITER_REQUESTED); } break; case NAV_STATE_RTL: if (!(_rtl_state == RTL_STATE_DESCEND && (myState == NAV_STATE_READY || myState == NAV_STATE_LAND || myState == NAV_STATE_LOITER)) && _vstatus.condition_home_position_valid) { dispatch(EVENT_RTL_REQUESTED); } break; case NAV_STATE_LAND: if (myState != NAV_STATE_READY) { dispatch(EVENT_LAND_REQUESTED); } break; default: warnx("ERROR: Requested navigation state not supported"); break; } } else { /* on first switch to AUTO try mission by default, if none is available fallback to loiter */ if (myState == NAV_STATE_NONE) { if (_mission.current_mission_available()) { dispatch(EVENT_MISSION_REQUESTED); } else { dispatch(EVENT_LOITER_REQUESTED); } } } } } else { /* navigator shouldn't act */ dispatch(EVENT_NONE_REQUESTED); } } /* parameters updated */ if (fds[0].revents & POLLIN) { parameters_update(); /* note that these new parameters won't be in effect until a mission triplet is published again */ } /* navigation capabilities updated */ if (fds[3].revents & POLLIN) { navigation_capabilities_update(); } /* offboard mission updated */ if (fds[4].revents & POLLIN) { offboard_mission_update(_vstatus.is_rotary_wing); // XXX check if mission really changed dispatch(EVENT_MISSION_CHANGED); } /* onboard mission updated */ if (fds[5].revents & POLLIN) { onboard_mission_update(); // XXX check if mission really changed dispatch(EVENT_MISSION_CHANGED); } /* home position updated */ if (fds[2].revents & POLLIN) { home_position_update(); // XXX check if home position really changed dispatch(EVENT_HOME_POSITION_CHANGED); } /* global position updated */ if (fds[1].revents & POLLIN) { global_position_update(); /* publish position setpoint triplet on each position update if navigator active */ if (_control_mode.flag_armed && _control_mode.flag_control_auto_enabled) { _pos_sp_triplet_updated = true; if (myState == NAV_STATE_LAND && _global_pos.global_valid && !_global_pos_valid) { /* got global position when landing, update setpoint */ start_land(); } _global_pos_valid = _global_pos.global_valid; /* check if waypoint has been reached in MISSION, RTL and LAND modes */ if (myState == NAV_STATE_MISSION || myState == NAV_STATE_RTL || myState == NAV_STATE_LAND) { if (check_mission_item_reached()) { on_mission_item_reached(); } } } /* Check geofence violation */ if (!_geofence.inside(&_global_pos)) { //xxx: publish geofence violation here (or change local flag depending on which app handles the flight termination) /* Issue a warning about the geofence violation once */ if (!_geofence_violation_warning_sent) { mavlink_log_critical(_mavlink_fd, "#audio: Geofence violation"); _geofence_violation_warning_sent = true; } } else { /* Reset the _geofence_violation_warning_sent field */ _geofence_violation_warning_sent = false; } } /* publish position setpoint triplet if updated */ if (_pos_sp_triplet_updated) { _pos_sp_triplet_updated = false; publish_position_setpoint_triplet(); } /* notify user about state changes */ if (myState != prevState) { mavlink_log_info(_mavlink_fd, "[navigator] nav state: %s", nav_states_str[myState]); prevState = myState; /* reset time counter on state changes */ _time_first_inside_orbit = 0; } perf_end(_loop_perf); } warnx("exiting."); _navigator_task = -1; _exit(0); } int Navigator::start() { ASSERT(_navigator_task == -1); /* start the task */ _navigator_task = task_spawn_cmd("navigator", SCHED_DEFAULT, SCHED_PRIORITY_MAX - 5, 2048, (main_t)&Navigator::task_main_trampoline, nullptr); if (_navigator_task < 0) { warn("task start failed"); return -errno; } return OK; } void Navigator::status() { warnx("Global position is %svalid", _global_pos.global_valid ? "" : "in"); if (_global_pos.global_valid) { warnx("Longitude %5.5f degrees, latitude %5.5f degrees", _global_pos.lon, _global_pos.lat); warnx("Altitude %5.5f meters, altitude above home %5.5f meters", (double)_global_pos.alt, (double)(_global_pos.alt - _home_pos.alt)); warnx("Ground velocity in m/s, N %5.5f, E %5.5f, D %5.5f", (double)_global_pos.vel_n, (double)_global_pos.vel_e, (double)_global_pos.vel_d); warnx("Compass heading in degrees %5.5f", (double)(_global_pos.yaw * M_RAD_TO_DEG_F)); } if (_fence_valid) { warnx("Geofence is valid"); // warnx("Vertex longitude latitude"); // for (unsigned i = 0; i < _fence.count; i++) // warnx("%6u %9.5f %8.5f", i, (double)_fence.vertices[i].lon, (double)_fence.vertices[i].lat); } else { warnx("Geofence not set"); } switch (myState) { case NAV_STATE_NONE: warnx("State: None"); break; case NAV_STATE_LOITER: warnx("State: Loiter"); break; case NAV_STATE_MISSION: warnx("State: Mission"); break; case NAV_STATE_RTL: warnx("State: RTL"); break; default: warnx("State: Unknown"); break; } } StateTable::Tran const Navigator::myTable[NAV_STATE_MAX][MAX_EVENT] = { { /* NAV_STATE_NONE */ /* EVENT_NONE_REQUESTED */ {NO_ACTION, NAV_STATE_NONE}, /* EVENT_READY_REQUESTED */ {ACTION(&Navigator::start_ready), NAV_STATE_READY}, /* EVENT_LOITER_REQUESTED */ {ACTION(&Navigator::start_loiter), NAV_STATE_LOITER}, /* EVENT_MISSION_REQUESTED */ {ACTION(&Navigator::start_mission), NAV_STATE_MISSION}, /* EVENT_RTL_REQUESTED */ {ACTION(&Navigator::start_rtl), NAV_STATE_RTL}, /* EVENT_LAND_REQUESTED */ {ACTION(&Navigator::start_land), NAV_STATE_LAND}, /* EVENT_MISSION_CHANGED */ {NO_ACTION, NAV_STATE_NONE}, /* EVENT_HOME_POSITION_CHANGED */ {NO_ACTION, NAV_STATE_NONE}, }, { /* NAV_STATE_READY */ /* EVENT_NONE_REQUESTED */ {ACTION(&Navigator::start_none), NAV_STATE_NONE}, /* EVENT_READY_REQUESTED */ {NO_ACTION, NAV_STATE_READY}, /* EVENT_LOITER_REQUESTED */ {NO_ACTION, NAV_STATE_READY}, /* EVENT_MISSION_REQUESTED */ {ACTION(&Navigator::start_mission), NAV_STATE_MISSION}, /* EVENT_RTL_REQUESTED */ {ACTION(&Navigator::start_rtl), NAV_STATE_RTL}, /* EVENT_LAND_REQUESTED */ {NO_ACTION, NAV_STATE_READY}, /* EVENT_MISSION_CHANGED */ {NO_ACTION, NAV_STATE_READY}, /* EVENT_HOME_POSITION_CHANGED */ {NO_ACTION, NAV_STATE_READY}, }, { /* NAV_STATE_LOITER */ /* EVENT_NONE_REQUESTED */ {ACTION(&Navigator::start_none), NAV_STATE_NONE}, /* EVENT_READY_REQUESTED */ {NO_ACTION, NAV_STATE_LOITER}, /* EVENT_LOITER_REQUESTED */ {NO_ACTION, NAV_STATE_LOITER}, /* EVENT_MISSION_REQUESTED */ {ACTION(&Navigator::start_mission), NAV_STATE_MISSION}, /* EVENT_RTL_REQUESTED */ {ACTION(&Navigator::start_rtl), NAV_STATE_RTL}, /* EVENT_LAND_REQUESTED */ {ACTION(&Navigator::start_land), NAV_STATE_LAND}, /* EVENT_MISSION_CHANGED */ {NO_ACTION, NAV_STATE_LOITER}, /* EVENT_HOME_POSITION_CHANGED */ {NO_ACTION, NAV_STATE_LOITER}, }, { /* NAV_STATE_MISSION */ /* EVENT_NONE_REQUESTED */ {ACTION(&Navigator::start_none), NAV_STATE_NONE}, /* EVENT_READY_REQUESTED */ {ACTION(&Navigator::start_ready), NAV_STATE_READY}, /* EVENT_LOITER_REQUESTED */ {ACTION(&Navigator::start_loiter), NAV_STATE_LOITER}, /* EVENT_MISSION_REQUESTED */ {NO_ACTION, NAV_STATE_MISSION}, /* EVENT_RTL_REQUESTED */ {ACTION(&Navigator::start_rtl), NAV_STATE_RTL}, /* EVENT_LAND_REQUESTED */ {ACTION(&Navigator::start_land), NAV_STATE_LAND}, /* EVENT_MISSION_CHANGED */ {ACTION(&Navigator::start_mission), NAV_STATE_MISSION}, /* EVENT_HOME_POSITION_CHANGED */ {NO_ACTION, NAV_STATE_MISSION}, }, { /* NAV_STATE_RTL */ /* EVENT_NONE_REQUESTED */ {ACTION(&Navigator::start_none), NAV_STATE_NONE}, /* EVENT_READY_REQUESTED */ {ACTION(&Navigator::start_ready), NAV_STATE_READY}, /* EVENT_LOITER_REQUESTED */ {ACTION(&Navigator::start_loiter), NAV_STATE_LOITER}, /* EVENT_MISSION_REQUESTED */ {ACTION(&Navigator::start_mission), NAV_STATE_MISSION}, /* EVENT_RTL_REQUESTED */ {NO_ACTION, NAV_STATE_RTL}, /* EVENT_LAND_REQUESTED */ {ACTION(&Navigator::start_land_home), NAV_STATE_LAND}, /* EVENT_MISSION_CHANGED */ {NO_ACTION, NAV_STATE_RTL}, /* EVENT_HOME_POSITION_CHANGED */ {ACTION(&Navigator::start_rtl), NAV_STATE_RTL}, // TODO need to reset rtl_state }, { /* NAV_STATE_LAND */ /* EVENT_NONE_REQUESTED */ {ACTION(&Navigator::start_none), NAV_STATE_NONE}, /* EVENT_READY_REQUESTED */ {ACTION(&Navigator::start_ready), NAV_STATE_READY}, /* EVENT_LOITER_REQUESTED */ {ACTION(&Navigator::start_loiter), NAV_STATE_LOITER}, /* EVENT_MISSION_REQUESTED */ {ACTION(&Navigator::start_mission), NAV_STATE_MISSION}, /* EVENT_RTL_REQUESTED */ {ACTION(&Navigator::start_rtl), NAV_STATE_RTL}, /* EVENT_LAND_REQUESTED */ {NO_ACTION, NAV_STATE_LAND}, /* EVENT_MISSION_CHANGED */ {NO_ACTION, NAV_STATE_LAND}, /* EVENT_HOME_POSITION_CHANGED */ {NO_ACTION, NAV_STATE_LAND}, }, }; void Navigator::start_none() { _pos_sp_triplet.previous.valid = false; _pos_sp_triplet.current.valid = false; _pos_sp_triplet.next.valid = false; _mission_item_valid = false; _reset_loiter_pos = true; _do_takeoff = false; _rtl_state = RTL_STATE_NONE; _pos_sp_triplet_updated = true; } void Navigator::start_ready() { _pos_sp_triplet.previous.valid = false; _pos_sp_triplet.current.valid = true; _pos_sp_triplet.next.valid = false; _pos_sp_triplet.current.type = SETPOINT_TYPE_IDLE; _mission_item_valid = false; _reset_loiter_pos = true; _do_takeoff = false; if (_rtl_state != RTL_STATE_DESCEND) { /* reset RTL state if landed not at home */ _rtl_state = RTL_STATE_NONE; } _pos_sp_triplet_updated = true; } void Navigator::start_loiter() { _do_takeoff = false; /* set loiter position if needed */ if (_reset_loiter_pos || !_pos_sp_triplet.current.valid) { _reset_loiter_pos = false; _pos_sp_triplet.current.lat = _global_pos.lat; _pos_sp_triplet.current.lon = _global_pos.lon; _pos_sp_triplet.current.yaw = NAN; // NAN means to use current yaw float min_alt_amsl = _parameters.min_altitude + _home_pos.alt; /* use current altitude if above min altitude set by parameter */ if (_global_pos.alt < min_alt_amsl) { _pos_sp_triplet.current.alt = min_alt_amsl; mavlink_log_info(_mavlink_fd, "[navigator] loiter %.1fm higher", (double)(min_alt_amsl - _global_pos.alt)); } else { _pos_sp_triplet.current.alt = _global_pos.alt; mavlink_log_info(_mavlink_fd, "[navigator] loiter at current altitude"); } _pos_sp_triplet.current.type = SETPOINT_TYPE_LOITER; } _pos_sp_triplet.current.loiter_radius = _parameters.loiter_radius; _pos_sp_triplet.current.loiter_direction = 1; _pos_sp_triplet.previous.valid = false; _pos_sp_triplet.current.valid = true; _pos_sp_triplet.next.valid = false; _mission_item_valid = false; _pos_sp_triplet_updated = true; } void Navigator::start_mission() { _need_takeoff = true; set_mission_item(); } void Navigator::set_mission_item() { /* copy current mission to previous item */ memcpy(&_pos_sp_triplet.previous, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); _reset_loiter_pos = true; _do_takeoff = false; int ret; bool onboard; unsigned index; ret = _mission.get_current_mission_item(&_mission_item, &onboard, &index); if (ret == OK) { /* reset time counter for new item */ _time_first_inside_orbit = 0; _mission_item_valid = true; position_setpoint_from_mission_item(&_pos_sp_triplet.current, &_mission_item); if (_mission_item.nav_cmd != NAV_CMD_RETURN_TO_LAUNCH && _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) { /* don't reset RTL state on RTL or LOITER items */ _rtl_state = RTL_STATE_NONE; } if (_vstatus.is_rotary_wing) { if (_need_takeoff && ( _mission_item.nav_cmd == NAV_CMD_TAKEOFF || _mission_item.nav_cmd == NAV_CMD_WAYPOINT || _mission_item.nav_cmd == NAV_CMD_RETURN_TO_LAUNCH || _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 )) { /* do special TAKEOFF handling for VTOL */ _need_takeoff = false; /* calculate desired takeoff altitude AMSL */ float takeoff_alt_amsl = _pos_sp_triplet.current.alt; if (_vstatus.condition_landed) { /* takeoff to at least NAV_TAKEOFF_ALT from ground if landed */ takeoff_alt_amsl = fmaxf(takeoff_alt_amsl, _global_pos.alt + _parameters.takeoff_alt); } /* check if we really need takeoff */ if (_vstatus.condition_landed || _global_pos.alt < takeoff_alt_amsl - _mission_item.acceptance_radius) { /* force TAKEOFF if landed or waypoint altitude is more than current */ _do_takeoff = true; /* move current position setpoint to next */ memcpy(&_pos_sp_triplet.next, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); /* set current setpoint to takeoff */ _pos_sp_triplet.current.lat = _global_pos.lat; _pos_sp_triplet.current.lon = _global_pos.lon; _pos_sp_triplet.current.alt = takeoff_alt_amsl; _pos_sp_triplet.current.yaw = NAN; _pos_sp_triplet.current.type = SETPOINT_TYPE_TAKEOFF; } } else if (_mission_item.nav_cmd == NAV_CMD_LAND) { /* will need takeoff after landing */ _need_takeoff = true; } } if (_do_takeoff) { mavlink_log_info(_mavlink_fd, "[navigator] takeoff to %.1fm above home", _pos_sp_triplet.current.alt - _home_pos.alt); } else { if (onboard) { mavlink_log_info(_mavlink_fd, "[navigator] heading to onboard WP %d", index); } else { mavlink_log_info(_mavlink_fd, "[navigator] heading to offboard WP %d", index); } } } else { /* since a mission is not advanced without WPs available, this is not supposed to happen */ _mission_item_valid = false; _pos_sp_triplet.current.valid = false; warnx("ERROR: current WP can't be set"); } if (!_do_takeoff) { mission_item_s item_next; ret = _mission.get_next_mission_item(&item_next); if (ret == OK) { position_setpoint_from_mission_item(&_pos_sp_triplet.next, &item_next); } else { /* this will fail for the last WP */ _pos_sp_triplet.next.valid = false; } } _pos_sp_triplet_updated = true; } void Navigator::start_rtl() { _do_takeoff = false; /* decide if we need climb */ if (_rtl_state == RTL_STATE_NONE) { if (_global_pos.alt < _home_pos.alt + _parameters.rtl_alt) { _rtl_state = RTL_STATE_CLIMB; } else { _rtl_state = RTL_STATE_RETURN; } } /* if switching directly to return state, reset altitude setpoint */ if (_rtl_state == RTL_STATE_RETURN) { _mission_item.altitude_is_relative = false; _mission_item.altitude = _global_pos.alt; } _reset_loiter_pos = true; set_rtl_item(); } void Navigator::start_land() { /* this state can be requested by commander even if no global position available, * in his case controller must perform landing without position control */ _do_takeoff = false; _reset_loiter_pos = true; memcpy(&_pos_sp_triplet.previous, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); _mission_item_valid = true; _mission_item.lat = _global_pos.lat; _mission_item.lon = _global_pos.lon; _mission_item.altitude_is_relative = false; _mission_item.altitude = _global_pos.alt; _mission_item.yaw = NAN; _mission_item.loiter_radius = _parameters.loiter_radius; _mission_item.loiter_direction = 1; _mission_item.nav_cmd = NAV_CMD_LAND; _mission_item.acceptance_radius = _parameters.acceptance_radius; _mission_item.time_inside = 0.0f; _mission_item.pitch_min = 0.0f; _mission_item.autocontinue = true; _mission_item.origin = ORIGIN_ONBOARD; position_setpoint_from_mission_item(&_pos_sp_triplet.current, &_mission_item); _pos_sp_triplet.next.valid = false; } void Navigator::start_land_home() { /* land to home position, should be called when hovering above home, from RTL state */ _do_takeoff = false; _reset_loiter_pos = true; memcpy(&_pos_sp_triplet.previous, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); _mission_item_valid = true; _mission_item.lat = _home_pos.lat; _mission_item.lon = _home_pos.lon; _mission_item.altitude_is_relative = false; _mission_item.altitude = _home_pos.alt; _mission_item.yaw = NAN; _mission_item.loiter_radius = _parameters.loiter_radius; _mission_item.loiter_direction = 1; _mission_item.nav_cmd = NAV_CMD_LAND; _mission_item.acceptance_radius = _parameters.acceptance_radius; _mission_item.time_inside = 0.0f; _mission_item.pitch_min = 0.0f; _mission_item.autocontinue = true; _mission_item.origin = ORIGIN_ONBOARD; position_setpoint_from_mission_item(&_pos_sp_triplet.current, &_mission_item); _pos_sp_triplet.next.valid = false; } void Navigator::set_rtl_item() { /*reset time counter for new RTL item */ _time_first_inside_orbit = 0; switch (_rtl_state) { case RTL_STATE_CLIMB: { memcpy(&_pos_sp_triplet.previous, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); float climb_alt = _home_pos.alt + _parameters.rtl_alt; if (_vstatus.condition_landed) { climb_alt = fmaxf(climb_alt, _global_pos.alt + _parameters.rtl_alt); } _mission_item_valid = true; _mission_item.lat = _global_pos.lat; _mission_item.lon = _global_pos.lon; _mission_item.altitude_is_relative = false; _mission_item.altitude = climb_alt; _mission_item.yaw = NAN; _mission_item.loiter_radius = _parameters.loiter_radius; _mission_item.loiter_direction = 1; _mission_item.nav_cmd = NAV_CMD_TAKEOFF; _mission_item.acceptance_radius = _parameters.acceptance_radius; _mission_item.time_inside = 0.0f; _mission_item.pitch_min = 0.0f; _mission_item.autocontinue = true; _mission_item.origin = ORIGIN_ONBOARD; position_setpoint_from_mission_item(&_pos_sp_triplet.current, &_mission_item); _pos_sp_triplet.next.valid = false; mavlink_log_info(_mavlink_fd, "[navigator] RTL: climb to %.1fm above home", climb_alt - _home_pos.alt); break; } case RTL_STATE_RETURN: { memcpy(&_pos_sp_triplet.previous, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); _mission_item_valid = true; _mission_item.lat = _home_pos.lat; _mission_item.lon = _home_pos.lon; // don't change altitude _mission_item.yaw = NAN; // TODO set heading to home _mission_item.loiter_radius = _parameters.loiter_radius; _mission_item.loiter_direction = 1; _mission_item.nav_cmd = NAV_CMD_WAYPOINT; _mission_item.acceptance_radius = _parameters.acceptance_radius; _mission_item.time_inside = 0.0f; _mission_item.pitch_min = 0.0f; _mission_item.autocontinue = true; _mission_item.origin = ORIGIN_ONBOARD; position_setpoint_from_mission_item(&_pos_sp_triplet.current, &_mission_item); _pos_sp_triplet.next.valid = false; mavlink_log_info(_mavlink_fd, "[navigator] RTL: return at %.1fm above home", _mission_item.altitude - _home_pos.alt); break; } case RTL_STATE_DESCEND: { memcpy(&_pos_sp_triplet.previous, &_pos_sp_triplet.current, sizeof(position_setpoint_s)); _mission_item_valid = true; _mission_item.lat = _home_pos.lat; _mission_item.lon = _home_pos.lon; _mission_item.altitude_is_relative = false; _mission_item.altitude = _home_pos.alt + _parameters.land_alt; _mission_item.yaw = NAN; _mission_item.loiter_radius = _parameters.loiter_radius; _mission_item.loiter_direction = 1; _mission_item.nav_cmd = NAV_CMD_WAYPOINT; _mission_item.acceptance_radius = _parameters.acceptance_radius; _mission_item.time_inside = _parameters.rtl_land_delay < 0.0 ? 0.0f : _parameters.rtl_land_delay; _mission_item.pitch_min = 0.0f; _mission_item.autocontinue = _parameters.rtl_land_delay > -0.001f; _mission_item.origin = ORIGIN_ONBOARD; position_setpoint_from_mission_item(&_pos_sp_triplet.current, &_mission_item); _pos_sp_triplet.next.valid = false; mavlink_log_info(_mavlink_fd, "[navigator] RTL: descend to %.1fm above home", _mission_item.altitude - _home_pos.alt); break; } default: { mavlink_log_critical(_mavlink_fd, "[navigator] error: unknown RTL state: %d", _rtl_state); start_loiter(); break; } } _pos_sp_triplet_updated = true; } void Navigator::position_setpoint_from_mission_item(position_setpoint_s *sp, mission_item_s *item) { sp->valid = true; if (item->nav_cmd == NAV_CMD_RETURN_TO_LAUNCH) { /* set home position for RTL item */ sp->lat = _home_pos.lat; sp->lon = _home_pos.lon; sp->alt = _home_pos.alt + _parameters.rtl_alt; } else { sp->lat = item->lat; sp->lon = item->lon; sp->alt = item->altitude_is_relative ? item->altitude + _home_pos.alt : item->altitude; } sp->yaw = item->yaw; sp->loiter_radius = item->loiter_radius; sp->loiter_direction = item->loiter_direction; sp->pitch_min = item->pitch_min; if (item->nav_cmd == NAV_CMD_TAKEOFF) { sp->type = SETPOINT_TYPE_TAKEOFF; } else if (item->nav_cmd == NAV_CMD_LAND) { sp->type = SETPOINT_TYPE_LAND; } else if (item->nav_cmd == NAV_CMD_LOITER_TIME_LIMIT || item->nav_cmd == NAV_CMD_LOITER_TURN_COUNT || item->nav_cmd == NAV_CMD_LOITER_UNLIMITED) { sp->type = SETPOINT_TYPE_LOITER; } else { sp->type = SETPOINT_TYPE_NORMAL; } } bool Navigator::check_mission_item_reached() { /* only check if there is actually a mission item to check */ if (!_mission_item_valid) { return false; } if (_mission_item.nav_cmd == NAV_CMD_LAND) { return _vstatus.condition_landed; } /* XXX TODO count turns */ if ((_mission_item.nav_cmd == NAV_CMD_LOITER_TURN_COUNT || _mission_item.nav_cmd == NAV_CMD_LOITER_TIME_LIMIT || _mission_item.nav_cmd == NAV_CMD_LOITER_UNLIMITED) && _mission_item.loiter_radius > 0.01f) { return false; } uint64_t now = hrt_absolute_time(); if (!_waypoint_position_reached) { float acceptance_radius; if (_mission_item.nav_cmd == NAV_CMD_WAYPOINT && _mission_item.acceptance_radius > 0.01f) { acceptance_radius = _mission_item.acceptance_radius; } else { acceptance_radius = _parameters.acceptance_radius; } float dist = -1.0f; float dist_xy = -1.0f; float dist_z = -1.0f; /* calculate AMSL altitude for this waypoint */ float wp_alt_amsl = _mission_item.altitude; if (_mission_item.altitude_is_relative) wp_alt_amsl += _home_pos.alt; dist = get_distance_to_point_global_wgs84(_mission_item.lat, _mission_item.lon, wp_alt_amsl, (double)_global_pos.lat, (double)_global_pos.lon, _global_pos.alt, &dist_xy, &dist_z); if (_do_takeoff) { if (_global_pos.alt > wp_alt_amsl - acceptance_radius) { /* require only altitude for takeoff */ _waypoint_position_reached = true; } } else { if (dist >= 0.0f && dist <= acceptance_radius) { _waypoint_position_reached = true; } } } if (!_waypoint_yaw_reached) { if (_vstatus.is_rotary_wing && !_do_takeoff && isfinite(_mission_item.yaw)) { /* check yaw if defined only for rotary wing except takeoff */ float yaw_err = _wrap_pi(_mission_item.yaw - _global_pos.yaw); if (fabsf(yaw_err) < 0.05f) { /* XXX get rid of magic number */ _waypoint_yaw_reached = true; } } else { _waypoint_yaw_reached = true; } } /* check if the current waypoint was reached */ if (_waypoint_position_reached && _waypoint_yaw_reached) { if (_time_first_inside_orbit == 0) { _time_first_inside_orbit = now; if (_mission_item.time_inside > 0.01f) { mavlink_log_info(_mavlink_fd, "[navigator] waypoint reached, wait for %.1fs", _mission_item.time_inside); } } /* check if the MAV was long enough inside the waypoint orbit */ if ((now - _time_first_inside_orbit >= (uint64_t)_mission_item.time_inside * 1e6) || _mission_item.nav_cmd == NAV_CMD_TAKEOFF) { _time_first_inside_orbit = 0; _waypoint_yaw_reached = false; _waypoint_position_reached = false; return true; } } return false; } void Navigator::on_mission_item_reached() { if (myState == NAV_STATE_MISSION) { if (_do_takeoff) { /* takeoff completed */ _do_takeoff = false; mavlink_log_info(_mavlink_fd, "[navigator] takeoff completed"); } else { /* advance by one mission item */ _mission.move_to_next(); } if (_mission.current_mission_available()) { set_mission_item(); } else { /* if no more mission items available then finish mission */ /* loiter at last waypoint */ _reset_loiter_pos = false; mavlink_log_info(_mavlink_fd, "[navigator] mission completed"); if (_vstatus.condition_landed) { dispatch(EVENT_READY_REQUESTED); } else { dispatch(EVENT_LOITER_REQUESTED); } } } else if (myState == NAV_STATE_RTL) { /* RTL completed */ if (_rtl_state == RTL_STATE_DESCEND) { /* hovering above home position, land if needed or loiter */ mavlink_log_info(_mavlink_fd, "[navigator] RTL completed"); if (_mission_item.autocontinue) { dispatch(EVENT_LAND_REQUESTED); } else { _reset_loiter_pos = false; dispatch(EVENT_LOITER_REQUESTED); } } else { /* next RTL step */ _rtl_state = (RTLState)(_rtl_state + 1); set_rtl_item(); } } else if (myState == NAV_STATE_LAND) { /* landing completed */ mavlink_log_info(_mavlink_fd, "[navigator] landing completed"); dispatch(EVENT_READY_REQUESTED); } } void Navigator::publish_position_setpoint_triplet() { /* update navigation state */ _pos_sp_triplet.nav_state = static_cast(myState); /* lazily publish the position setpoint triplet only once available */ if (_pos_sp_triplet_pub > 0) { /* publish the position setpoint triplet */ orb_publish(ORB_ID(position_setpoint_triplet), _pos_sp_triplet_pub, &_pos_sp_triplet); } else { /* advertise and publish */ _pos_sp_triplet_pub = orb_advertise(ORB_ID(position_setpoint_triplet), &_pos_sp_triplet); } } void Navigator::add_fence_point(int argc, char *argv[]) { _geofence.addPoint(argc, argv); } void Navigator::load_fence_from_file(const char *filename) { _geofence.loadFromFile(filename); } static void usage() { errx(1, "usage: navigator {start|stop|status|fence|fencefile}"); } int navigator_main(int argc, char *argv[]) { if (argc < 2) { usage(); } if (!strcmp(argv[1], "start")) { if (navigator::g_navigator != nullptr) { errx(1, "already running"); } navigator::g_navigator = new Navigator; if (navigator::g_navigator == nullptr) { errx(1, "alloc failed"); } if (OK != navigator::g_navigator->start()) { delete navigator::g_navigator; navigator::g_navigator = nullptr; err(1, "start failed"); } return 0; } if (navigator::g_navigator == nullptr) errx(1, "not running"); if (!strcmp(argv[1], "stop")) { delete navigator::g_navigator; navigator::g_navigator = nullptr; } else if (!strcmp(argv[1], "status")) { navigator::g_navigator->status(); } else if (!strcmp(argv[1], "fence")) { navigator::g_navigator->add_fence_point(argc - 2, argv + 2); } else if (!strcmp(argv[1], "fencefile")) { navigator::g_navigator->load_fence_from_file(GEOFENCE_FILENAME); } else { usage(); } return 0; }