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-rw-r--r--src/modules/navigator/datalinkloss.cpp227
-rw-r--r--src/modules/navigator/datalinkloss.h98
-rw-r--r--src/modules/navigator/datalinkloss_params.c126
-rw-r--r--src/modules/navigator/enginefailure.cpp149
-rw-r--r--src/modules/navigator/enginefailure.h83
-rw-r--r--src/modules/navigator/gpsfailure.cpp178
-rw-r--r--src/modules/navigator/gpsfailure.h97
-rw-r--r--src/modules/navigator/gpsfailure_params.c97
-rw-r--r--src/modules/navigator/rcloss.cpp182
-rw-r--r--src/modules/navigator/rcloss.h88
-rw-r--r--src/modules/navigator/rcloss_params.c60
11 files changed, 1385 insertions, 0 deletions
diff --git a/src/modules/navigator/datalinkloss.cpp b/src/modules/navigator/datalinkloss.cpp
new file mode 100644
index 000000000..66f1c8c73
--- /dev/null
+++ b/src/modules/navigator/datalinkloss.cpp
@@ -0,0 +1,227 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 datalinkloss.cpp
+ * Helper class for Data Link Loss Mode according to the OBC rules
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include <fcntl.h>
+
+#include <mavlink/mavlink_log.h>
+#include <systemlib/err.h>
+#include <geo/geo.h>
+
+#include <uORB/uORB.h>
+#include <uORB/topics/mission.h>
+#include <uORB/topics/home_position.h>
+
+#include "navigator.h"
+#include "datalinkloss.h"
+
+#define DELAY_SIGMA 0.01f
+
+DataLinkLoss::DataLinkLoss(Navigator *navigator, const char *name) :
+ MissionBlock(navigator, name),
+ _param_commsholdwaittime(this, "CH_T"),
+ _param_commsholdlat(this, "CH_LAT"),
+ _param_commsholdlon(this, "CH_LON"),
+ _param_commsholdalt(this, "CH_ALT"),
+ _param_airfieldhomelat(this, "NAV_AH_LAT", false),
+ _param_airfieldhomelon(this, "NAV_AH_LON", false),
+ _param_airfieldhomealt(this, "NAV_AH_ALT", false),
+ _param_airfieldhomewaittime(this, "AH_T"),
+ _param_numberdatalinklosses(this, "N"),
+ _param_skipcommshold(this, "CHSK"),
+ _dll_state(DLL_STATE_NONE)
+{
+ /* load initial params */
+ updateParams();
+ /* initial reset */
+ on_inactive();
+}
+
+DataLinkLoss::~DataLinkLoss()
+{
+}
+
+void
+DataLinkLoss::on_inactive()
+{
+ /* reset DLL state only if setpoint moved */
+ if (!_navigator->get_can_loiter_at_sp()) {
+ _dll_state = DLL_STATE_NONE;
+ }
+}
+
+void
+DataLinkLoss::on_activation()
+{
+ _dll_state = DLL_STATE_NONE;
+ updateParams();
+ advance_dll();
+ set_dll_item();
+}
+
+void
+DataLinkLoss::on_active()
+{
+ if (is_mission_item_reached()) {
+ updateParams();
+ advance_dll();
+ set_dll_item();
+ }
+}
+
+void
+DataLinkLoss::set_dll_item()
+{
+ struct position_setpoint_triplet_s *pos_sp_triplet = _navigator->get_position_setpoint_triplet();
+
+ set_previous_pos_setpoint();
+ _navigator->set_can_loiter_at_sp(false);
+
+ switch (_dll_state) {
+ case DLL_STATE_FLYTOCOMMSHOLDWP: {
+ _mission_item.lat = (double)(_param_commsholdlat.get()) * 1.0e-7;
+ _mission_item.lon = (double)(_param_commsholdlon.get()) * 1.0e-7;
+ _mission_item.altitude_is_relative = false;
+ _mission_item.altitude = _param_commsholdalt.get();
+ _mission_item.yaw = NAN;
+ _mission_item.loiter_radius = _navigator->get_loiter_radius();
+ _mission_item.loiter_direction = 1;
+ _mission_item.nav_cmd = NAV_CMD_LOITER_TIME_LIMIT;
+ _mission_item.acceptance_radius = _navigator->get_acceptance_radius();
+ _mission_item.time_inside = _param_commsholdwaittime.get() < 0.0f ? 0.0f : _param_commsholdwaittime.get();
+ _mission_item.pitch_min = 0.0f;
+ _mission_item.autocontinue = true;
+ _mission_item.origin = ORIGIN_ONBOARD;
+
+ _navigator->set_can_loiter_at_sp(true);
+ break;
+ }
+ case DLL_STATE_FLYTOAIRFIELDHOMEWP: {
+ _mission_item.lat = (double)(_param_airfieldhomelat.get()) * 1.0e-7;
+ _mission_item.lon = (double)(_param_airfieldhomelon.get()) * 1.0e-7;
+ _mission_item.altitude_is_relative = false;
+ _mission_item.altitude = _param_airfieldhomealt.get();
+ _mission_item.yaw = NAN;
+ _mission_item.loiter_radius = _navigator->get_loiter_radius();
+ _mission_item.loiter_direction = 1;
+ _mission_item.nav_cmd = NAV_CMD_LOITER_TIME_LIMIT;
+ _mission_item.time_inside = _param_airfieldhomewaittime.get() < 0.0f ? 0.0f : _param_airfieldhomewaittime.get();
+ _mission_item.acceptance_radius = _navigator->get_acceptance_radius();
+ _mission_item.pitch_min = 0.0f;
+ _mission_item.autocontinue = true;
+ _mission_item.origin = ORIGIN_ONBOARD;
+
+ _navigator->set_can_loiter_at_sp(true);
+ break;
+ }
+ case DLL_STATE_TERMINATE: {
+ /* Request flight termination from the commander */
+ _navigator->get_mission_result()->flight_termination = true;
+ _navigator->publish_mission_result();
+ warnx("not switched to manual: request flight termination");
+ pos_sp_triplet->previous.valid = false;
+ pos_sp_triplet->current.valid = false;
+ pos_sp_triplet->next.valid = false;
+ break;
+ }
+ default:
+ break;
+ }
+
+ reset_mission_item_reached();
+
+ /* convert mission item to current position setpoint and make it valid */
+ mission_item_to_position_setpoint(&_mission_item, &pos_sp_triplet->current);
+ pos_sp_triplet->next.valid = false;
+
+ _navigator->set_position_setpoint_triplet_updated();
+}
+
+void
+DataLinkLoss::advance_dll()
+{
+ switch (_dll_state) {
+ case DLL_STATE_NONE:
+ /* Check the number of data link losses. If above home fly home directly */
+ /* if number of data link losses limit is not reached fly to comms hold wp */
+ if (_navigator->get_vstatus()->data_link_lost_counter > _param_numberdatalinklosses.get()) {
+ warnx("%d data link losses, limit is %d, fly to airfield home",
+ _navigator->get_vstatus()->data_link_lost_counter, _param_numberdatalinklosses.get());
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: too many DL losses, fly to airfield home");
+ _navigator->get_mission_result()->stay_in_failsafe = true;
+ _navigator->publish_mission_result();
+ _dll_state = DLL_STATE_FLYTOAIRFIELDHOMEWP;
+ } else {
+ if (!_param_skipcommshold.get()) {
+ warnx("fly to comms hold, datalink loss counter: %d", _navigator->get_vstatus()->data_link_lost_counter);
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: fly to comms hold");
+ _dll_state = DLL_STATE_FLYTOCOMMSHOLDWP;
+ } else {
+ /* comms hold wp not active, fly to airfield home directly */
+ warnx("Skipping comms hold wp. Flying directly to airfield home");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: fly to airfield home, comms hold skipped");
+ _dll_state = DLL_STATE_FLYTOAIRFIELDHOMEWP;
+ }
+ }
+ break;
+ case DLL_STATE_FLYTOCOMMSHOLDWP:
+ warnx("fly to airfield home");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: fly to airfield home");
+ _dll_state = DLL_STATE_FLYTOAIRFIELDHOMEWP;
+ _navigator->get_mission_result()->stay_in_failsafe = true;
+ _navigator->publish_mission_result();
+ break;
+ case DLL_STATE_FLYTOAIRFIELDHOMEWP:
+ _dll_state = DLL_STATE_TERMINATE;
+ warnx("time is up, state should have been changed manually by now");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: no manual control, terminating");
+ _navigator->get_mission_result()->stay_in_failsafe = true;
+ _navigator->publish_mission_result();
+ break;
+ case DLL_STATE_TERMINATE:
+ warnx("dll end");
+ _dll_state = DLL_STATE_END;
+ break;
+
+ default:
+ break;
+ }
+}
diff --git a/src/modules/navigator/datalinkloss.h b/src/modules/navigator/datalinkloss.h
new file mode 100644
index 000000000..31e0e3907
--- /dev/null
+++ b/src/modules/navigator/datalinkloss.h
@@ -0,0 +1,98 @@
+/***************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 datalinkloss.h
+ * Helper class for Data Link Loss Mode acording to the OBC rules
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#ifndef NAVIGATOR_DATALINKLOSS_H
+#define NAVIGATOR_DATALINKLOSS_H
+
+#include <controllib/blocks.hpp>
+#include <controllib/block/BlockParam.hpp>
+
+#include <uORB/Subscription.hpp>
+
+#include "navigator_mode.h"
+#include "mission_block.h"
+
+class Navigator;
+
+class DataLinkLoss : public MissionBlock
+{
+public:
+ DataLinkLoss(Navigator *navigator, const char *name);
+
+ ~DataLinkLoss();
+
+ virtual void on_inactive();
+
+ virtual void on_activation();
+
+ virtual void on_active();
+
+private:
+ /* Params */
+ control::BlockParamFloat _param_commsholdwaittime;
+ control::BlockParamInt _param_commsholdlat; // * 1e7
+ control::BlockParamInt _param_commsholdlon; // * 1e7
+ control::BlockParamFloat _param_commsholdalt;
+ control::BlockParamInt _param_airfieldhomelat; // * 1e7
+ control::BlockParamInt _param_airfieldhomelon; // * 1e7
+ control::BlockParamFloat _param_airfieldhomealt;
+ control::BlockParamFloat _param_airfieldhomewaittime;
+ control::BlockParamInt _param_numberdatalinklosses;
+ control::BlockParamInt _param_skipcommshold;
+
+ enum DLLState {
+ DLL_STATE_NONE = 0,
+ DLL_STATE_FLYTOCOMMSHOLDWP = 1,
+ DLL_STATE_FLYTOAIRFIELDHOMEWP = 2,
+ DLL_STATE_TERMINATE = 3,
+ DLL_STATE_END = 4
+ } _dll_state;
+
+ /**
+ * Set the DLL item
+ */
+ void set_dll_item();
+
+ /**
+ * Move to next DLL item
+ */
+ void advance_dll();
+
+};
+#endif
diff --git a/src/modules/navigator/datalinkloss_params.c b/src/modules/navigator/datalinkloss_params.c
new file mode 100644
index 000000000..6780c0c88
--- /dev/null
+++ b/src/modules/navigator/datalinkloss_params.c
@@ -0,0 +1,126 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 datalinkloss_params.c
+ *
+ * Parameters for DLL
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#include <nuttx/config.h>
+
+#include <systemlib/param/param.h>
+
+/*
+ * Data Link Loss parameters, accessible via MAVLink
+ */
+
+/**
+ * Comms hold wait time
+ *
+ * The amount of time in seconds the system should wait at the comms hold waypoint
+ *
+ * @unit seconds
+ * @min 0.0
+ * @group DLL
+ */
+PARAM_DEFINE_FLOAT(NAV_DLL_CH_T, 120.0f);
+
+/**
+ * Comms hold Lat
+ *
+ * Latitude of comms hold waypoint
+ *
+ * @unit degrees * 1e7
+ * @min 0.0
+ * @group DLL
+ */
+PARAM_DEFINE_INT32(NAV_DLL_CH_LAT, -266072120);
+
+/**
+ * Comms hold Lon
+ *
+ * Longitude of comms hold waypoint
+ *
+ * @unit degrees * 1e7
+ * @min 0.0
+ * @group DLL
+ */
+PARAM_DEFINE_INT32(NAV_DLL_CH_LON, 1518453890);
+
+/**
+ * Comms hold alt
+ *
+ * Altitude of comms hold waypoint
+ *
+ * @unit m
+ * @min 0.0
+ * @group DLL
+ */
+PARAM_DEFINE_FLOAT(NAV_DLL_CH_ALT, 600.0f);
+
+/**
+ * Aifield hole wait time
+ *
+ * The amount of time in seconds the system should wait at the airfield home waypoint
+ *
+ * @unit seconds
+ * @min 0.0
+ * @group DLL
+ */
+PARAM_DEFINE_FLOAT(NAV_DLL_AH_T, 120.0f);
+
+/**
+ * Number of allowed Datalink timeouts
+ *
+ * After more than this number of data link timeouts the aircraft returns home directly
+ *
+ * @group DLL
+ * @min 0
+ * @max 1000
+ */
+PARAM_DEFINE_INT32(NAV_DLL_N, 2);
+
+/**
+ * Skip comms hold wp
+ *
+ * If set to 1 the system will skip the comms hold wp on data link loss and will directly fly to
+ * airfield home
+ *
+ * @group DLL
+ * @min 0
+ * @max 1
+ */
+PARAM_DEFINE_INT32(NAV_DLL_CHSK, 0);
diff --git a/src/modules/navigator/enginefailure.cpp b/src/modules/navigator/enginefailure.cpp
new file mode 100644
index 000000000..e007b208b
--- /dev/null
+++ b/src/modules/navigator/enginefailure.cpp
@@ -0,0 +1,149 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 enginefailure.cpp
+ * Helper class for a fixedwing engine failure mode
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include <fcntl.h>
+
+#include <mavlink/mavlink_log.h>
+#include <systemlib/err.h>
+#include <geo/geo.h>
+
+#include <uORB/uORB.h>
+#include <uORB/topics/mission.h>
+
+#include "navigator.h"
+#include "enginefailure.h"
+
+#define DELAY_SIGMA 0.01f
+
+EngineFailure::EngineFailure(Navigator *navigator, const char *name) :
+ MissionBlock(navigator, name),
+ _ef_state(EF_STATE_NONE)
+{
+ /* load initial params */
+ updateParams();
+ /* initial reset */
+ on_inactive();
+}
+
+EngineFailure::~EngineFailure()
+{
+}
+
+void
+EngineFailure::on_inactive()
+{
+ _ef_state = EF_STATE_NONE;
+}
+
+void
+EngineFailure::on_activation()
+{
+ _ef_state = EF_STATE_NONE;
+ advance_ef();
+ set_ef_item();
+}
+
+void
+EngineFailure::on_active()
+{
+ if (is_mission_item_reached()) {
+ advance_ef();
+ set_ef_item();
+ }
+}
+
+void
+EngineFailure::set_ef_item()
+{
+ struct position_setpoint_triplet_s *pos_sp_triplet = _navigator->get_position_setpoint_triplet();
+
+ /* make sure we have the latest params */
+ updateParams();
+
+ set_previous_pos_setpoint();
+ _navigator->set_can_loiter_at_sp(false);
+
+ switch (_ef_state) {
+ case EF_STATE_LOITERDOWN: {
+ //XXX create mission item at ground (below?) here
+
+ _mission_item.lat = _navigator->get_global_position()->lat;
+ _mission_item.lon = _navigator->get_global_position()->lon;
+ _mission_item.altitude_is_relative = false;
+ //XXX setting altitude to a very low value, evaluate other options
+ _mission_item.altitude = _navigator->get_home_position()->alt - 1000.0f;
+ _mission_item.yaw = NAN;
+ _mission_item.loiter_radius = _navigator->get_loiter_radius();
+ _mission_item.loiter_direction = 1;
+ _mission_item.nav_cmd = NAV_CMD_LOITER_UNLIMITED;
+ _mission_item.acceptance_radius = _navigator->get_acceptance_radius();
+ _mission_item.pitch_min = 0.0f;
+ _mission_item.autocontinue = true;
+ _mission_item.origin = ORIGIN_ONBOARD;
+
+ _navigator->set_can_loiter_at_sp(true);
+ break;
+ }
+ default:
+ break;
+ }
+
+ reset_mission_item_reached();
+
+ /* convert mission item to current position setpoint and make it valid */
+ mission_item_to_position_setpoint(&_mission_item, &pos_sp_triplet->current);
+ pos_sp_triplet->next.valid = false;
+
+ _navigator->set_position_setpoint_triplet_updated();
+}
+
+void
+EngineFailure::advance_ef()
+{
+ switch (_ef_state) {
+ case EF_STATE_NONE:
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: Engine failure. Loitering down");
+ _ef_state = EF_STATE_LOITERDOWN;
+ break;
+ default:
+ break;
+ }
+}
diff --git a/src/modules/navigator/enginefailure.h b/src/modules/navigator/enginefailure.h
new file mode 100644
index 000000000..2c48c2fce
--- /dev/null
+++ b/src/modules/navigator/enginefailure.h
@@ -0,0 +1,83 @@
+/***************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 enginefailure.h
+ * Helper class for a fixedwing engine failure mode
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#ifndef NAVIGATOR_ENGINEFAILURE_H
+#define NAVIGATOR_ENGINEFAILURE_H
+
+#include <controllib/blocks.hpp>
+#include <controllib/block/BlockParam.hpp>
+
+#include <uORB/Subscription.hpp>
+
+#include "navigator_mode.h"
+#include "mission_block.h"
+
+class Navigator;
+
+class EngineFailure : public MissionBlock
+{
+public:
+ EngineFailure(Navigator *navigator, const char *name);
+
+ ~EngineFailure();
+
+ virtual void on_inactive();
+
+ virtual void on_activation();
+
+ virtual void on_active();
+
+private:
+ enum EFState {
+ EF_STATE_NONE = 0,
+ EF_STATE_LOITERDOWN = 1,
+ } _ef_state;
+
+ /**
+ * Set the DLL item
+ */
+ void set_ef_item();
+
+ /**
+ * Move to next EF item
+ */
+ void advance_ef();
+
+};
+#endif
diff --git a/src/modules/navigator/gpsfailure.cpp b/src/modules/navigator/gpsfailure.cpp
new file mode 100644
index 000000000..cd55f60b0
--- /dev/null
+++ b/src/modules/navigator/gpsfailure.cpp
@@ -0,0 +1,178 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 gpsfailure.cpp
+ * Helper class for gpsfailure mode according to the OBC rules
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include <fcntl.h>
+
+#include <mavlink/mavlink_log.h>
+#include <systemlib/err.h>
+#include <geo/geo.h>
+
+#include <uORB/uORB.h>
+#include <uORB/topics/mission.h>
+#include <uORB/topics/home_position.h>
+
+#include "navigator.h"
+#include "gpsfailure.h"
+
+#define DELAY_SIGMA 0.01f
+
+GpsFailure::GpsFailure(Navigator *navigator, const char *name) :
+ MissionBlock(navigator, name),
+ _param_loitertime(this, "LT"),
+ _param_openlooploiter_roll(this, "R"),
+ _param_openlooploiter_pitch(this, "P"),
+ _param_openlooploiter_thrust(this, "TR"),
+ _gpsf_state(GPSF_STATE_NONE),
+ _timestamp_activation(0)
+{
+ /* load initial params */
+ updateParams();
+ /* initial reset */
+ on_inactive();
+}
+
+GpsFailure::~GpsFailure()
+{
+}
+
+void
+GpsFailure::on_inactive()
+{
+ /* reset GPSF state only if setpoint moved */
+ if (!_navigator->get_can_loiter_at_sp()) {
+ _gpsf_state = GPSF_STATE_NONE;
+ }
+}
+
+void
+GpsFailure::on_activation()
+{
+ _gpsf_state = GPSF_STATE_NONE;
+ _timestamp_activation = hrt_absolute_time();
+ updateParams();
+ advance_gpsf();
+ set_gpsf_item();
+}
+
+void
+GpsFailure::on_active()
+{
+
+ switch (_gpsf_state) {
+ case GPSF_STATE_LOITER: {
+ /* Position controller does not run in this mode:
+ * navigator has to publish an attitude setpoint */
+ _navigator->get_att_sp()->roll_body = M_DEG_TO_RAD_F * _param_openlooploiter_roll.get();
+ _navigator->get_att_sp()->pitch_body = M_DEG_TO_RAD_F * _param_openlooploiter_pitch.get();
+ _navigator->get_att_sp()->thrust = _param_openlooploiter_thrust.get();
+ _navigator->publish_att_sp();
+
+ /* Measure time */
+ hrt_abstime elapsed = hrt_elapsed_time(&_timestamp_activation);
+
+ //warnx("open loop loiter, posctl enabled %u, elapsed %.1fs, thrust %.2f",
+ //_navigator->get_control_mode()->flag_control_position_enabled, elapsed * 1e-6, (double)_param_openlooploiter_thrust.get());
+ if (elapsed > _param_loitertime.get() * 1e6f) {
+ /* no recovery, adavance the state machine */
+ warnx("gps not recovered, switch to next state");
+ advance_gpsf();
+ }
+ break;
+ }
+ case GPSF_STATE_TERMINATE:
+ set_gpsf_item();
+ advance_gpsf();
+ break;
+ default:
+ break;
+ }
+}
+
+void
+GpsFailure::set_gpsf_item()
+{
+ struct position_setpoint_triplet_s *pos_sp_triplet = _navigator->get_position_setpoint_triplet();
+
+ /* Set pos sp triplet to invalid to stop pos controller */
+ pos_sp_triplet->previous.valid = false;
+ pos_sp_triplet->current.valid = false;
+ pos_sp_triplet->next.valid = false;
+
+ switch (_gpsf_state) {
+ case GPSF_STATE_TERMINATE: {
+ /* Request flight termination from the commander */
+ _navigator->get_mission_result()->flight_termination = true;
+ _navigator->publish_mission_result();
+ warnx("gps fail: request flight termination");
+ }
+ default:
+ break;
+ }
+
+ reset_mission_item_reached();
+ _navigator->set_position_setpoint_triplet_updated();
+}
+
+void
+GpsFailure::advance_gpsf()
+{
+ updateParams();
+
+ switch (_gpsf_state) {
+ case GPSF_STATE_NONE:
+ _gpsf_state = GPSF_STATE_LOITER;
+ warnx("gpsf loiter");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: open loop loiter");
+ break;
+ case GPSF_STATE_LOITER:
+ _gpsf_state = GPSF_STATE_TERMINATE;
+ warnx("gpsf terminate");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: no gps recovery, termination");
+ warnx("mavlink sent");
+ break;
+ case GPSF_STATE_TERMINATE:
+ warnx("gpsf end");
+ _gpsf_state = GPSF_STATE_END;
+ default:
+ break;
+ }
+}
diff --git a/src/modules/navigator/gpsfailure.h b/src/modules/navigator/gpsfailure.h
new file mode 100644
index 000000000..e9e72babf
--- /dev/null
+++ b/src/modules/navigator/gpsfailure.h
@@ -0,0 +1,97 @@
+/***************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 gpsfailure.h
+ * Helper class for Data Link Loss Mode according to the OBC rules
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#ifndef NAVIGATOR_GPSFAILURE_H
+#define NAVIGATOR_GPSFAILURE_H
+
+#include <controllib/blocks.hpp>
+#include <controllib/block/BlockParam.hpp>
+
+#include <uORB/uORB.h>
+#include <uORB/Publication.hpp>
+#include <uORB/topics/vehicle_attitude_setpoint.h>
+
+#include <drivers/drv_hrt.h>
+
+#include "navigator_mode.h"
+#include "mission_block.h"
+
+class Navigator;
+
+class GpsFailure : public MissionBlock
+{
+public:
+ GpsFailure(Navigator *navigator, const char *name);
+
+ ~GpsFailure();
+
+ virtual void on_inactive();
+
+ virtual void on_activation();
+
+ virtual void on_active();
+
+private:
+ /* Params */
+ control::BlockParamFloat _param_loitertime;
+ control::BlockParamFloat _param_openlooploiter_roll;
+ control::BlockParamFloat _param_openlooploiter_pitch;
+ control::BlockParamFloat _param_openlooploiter_thrust;
+
+ enum GPSFState {
+ GPSF_STATE_NONE = 0,
+ GPSF_STATE_LOITER = 1,
+ GPSF_STATE_TERMINATE = 2,
+ GPSF_STATE_END = 3,
+ } _gpsf_state;
+
+ hrt_abstime _timestamp_activation; //*< timestamp when this mode was activated */
+
+ /**
+ * Set the GPSF item
+ */
+ void set_gpsf_item();
+
+ /**
+ * Move to next GPSF item
+ */
+ void advance_gpsf();
+
+};
+#endif
diff --git a/src/modules/navigator/gpsfailure_params.c b/src/modules/navigator/gpsfailure_params.c
new file mode 100644
index 000000000..39d179eed
--- /dev/null
+++ b/src/modules/navigator/gpsfailure_params.c
@@ -0,0 +1,97 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 gpsfailure_params.c
+ *
+ * Parameters for GPSF navigation mode
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#include <nuttx/config.h>
+
+#include <systemlib/param/param.h>
+
+/*
+ * GPS Failure Navigation Mode parameters, accessible via MAVLink
+ */
+
+/**
+ * Loiter time
+ *
+ * The amount of time in seconds the system should do open loop loiter and wait for gps recovery
+ * before it goes into flight termination.
+ *
+ * @unit seconds
+ * @min 0.0
+ * @group GPSF
+ */
+PARAM_DEFINE_FLOAT(NAV_GPSF_LT, 30.0f);
+
+/**
+ * Open loop loiter roll
+ *
+ * Roll in degrees during the open loop loiter
+ *
+ * @unit deg
+ * @min 0.0
+ * @max 30.0
+ * @group GPSF
+ */
+PARAM_DEFINE_FLOAT(NAV_GPSF_R, 15.0f);
+
+/**
+ * Open loop loiter pitch
+ *
+ * Pitch in degrees during the open loop loiter
+ *
+ * @unit deg
+ * @min -30.0
+ * @max 30.0
+ * @group GPSF
+ */
+PARAM_DEFINE_FLOAT(NAV_GPSF_P, 0.0f);
+
+/**
+ * Open loop loiter thrust
+ *
+ * Thrust value which is set during the open loop loiter
+ *
+ * @min 0.0
+ * @max 1.0
+ * @group GPSF
+ */
+PARAM_DEFINE_FLOAT(NAV_GPSF_TR, 0.7f);
+
+
diff --git a/src/modules/navigator/rcloss.cpp b/src/modules/navigator/rcloss.cpp
new file mode 100644
index 000000000..5564a1c42
--- /dev/null
+++ b/src/modules/navigator/rcloss.cpp
@@ -0,0 +1,182 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 rcloss.cpp
+ * Helper class for RC Loss Mode according to the OBC rules
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include <fcntl.h>
+
+#include <mavlink/mavlink_log.h>
+#include <systemlib/err.h>
+#include <geo/geo.h>
+
+#include <uORB/uORB.h>
+#include <uORB/topics/mission.h>
+#include <uORB/topics/home_position.h>
+
+#include "navigator.h"
+#include "datalinkloss.h"
+
+#define DELAY_SIGMA 0.01f
+
+RCLoss::RCLoss(Navigator *navigator, const char *name) :
+ MissionBlock(navigator, name),
+ _param_loitertime(this, "LT"),
+ _rcl_state(RCL_STATE_NONE)
+{
+ /* load initial params */
+ updateParams();
+ /* initial reset */
+ on_inactive();
+}
+
+RCLoss::~RCLoss()
+{
+}
+
+void
+RCLoss::on_inactive()
+{
+ /* reset RCL state only if setpoint moved */
+ if (!_navigator->get_can_loiter_at_sp()) {
+ _rcl_state = RCL_STATE_NONE;
+ }
+}
+
+void
+RCLoss::on_activation()
+{
+ _rcl_state = RCL_STATE_NONE;
+ updateParams();
+ advance_rcl();
+ set_rcl_item();
+}
+
+void
+RCLoss::on_active()
+{
+ if (is_mission_item_reached()) {
+ updateParams();
+ advance_rcl();
+ set_rcl_item();
+ }
+}
+
+void
+RCLoss::set_rcl_item()
+{
+ struct position_setpoint_triplet_s *pos_sp_triplet = _navigator->get_position_setpoint_triplet();
+
+ set_previous_pos_setpoint();
+ _navigator->set_can_loiter_at_sp(false);
+
+ switch (_rcl_state) {
+ case RCL_STATE_LOITER: {
+ _mission_item.lat = _navigator->get_global_position()->lat;
+ _mission_item.lon = _navigator->get_global_position()->lon;
+ _mission_item.altitude = _navigator->get_global_position()->alt;
+ _mission_item.altitude_is_relative = false;
+ _mission_item.yaw = NAN;
+ _mission_item.loiter_radius = _navigator->get_loiter_radius();
+ _mission_item.loiter_direction = 1;
+ _mission_item.nav_cmd = NAV_CMD_LOITER_TIME_LIMIT;
+ _mission_item.acceptance_radius = _navigator->get_acceptance_radius();
+ _mission_item.time_inside = _param_loitertime.get() < 0.0f ? 0.0f : _param_loitertime.get();
+ _mission_item.pitch_min = 0.0f;
+ _mission_item.autocontinue = true;
+ _mission_item.origin = ORIGIN_ONBOARD;
+
+ _navigator->set_can_loiter_at_sp(true);
+ break;
+ }
+ case RCL_STATE_TERMINATE: {
+ /* Request flight termination from the commander */
+ _navigator->get_mission_result()->flight_termination = true;
+ _navigator->publish_mission_result();
+ warnx("rc not recovered: request flight termination");
+ pos_sp_triplet->previous.valid = false;
+ pos_sp_triplet->current.valid = false;
+ pos_sp_triplet->next.valid = false;
+ break;
+ }
+ default:
+ break;
+ }
+
+ reset_mission_item_reached();
+
+ /* convert mission item to current position setpoint and make it valid */
+ mission_item_to_position_setpoint(&_mission_item, &pos_sp_triplet->current);
+ pos_sp_triplet->next.valid = false;
+
+ _navigator->set_position_setpoint_triplet_updated();
+}
+
+void
+RCLoss::advance_rcl()
+{
+ switch (_rcl_state) {
+ case RCL_STATE_NONE:
+ if (_param_loitertime.get() > 0.0f) {
+ warnx("RC loss, OBC mode, loiter");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: rc loss, loitering");
+ _rcl_state = RCL_STATE_LOITER;
+ } else {
+ warnx("RC loss, OBC mode, slip loiter, terminate");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: rc loss, terminating");
+ _rcl_state = RCL_STATE_TERMINATE;
+ _navigator->get_mission_result()->stay_in_failsafe = true;
+ _navigator->publish_mission_result();
+ }
+ break;
+ case RCL_STATE_LOITER:
+ _rcl_state = RCL_STATE_TERMINATE;
+ warnx("time is up, no RC regain, terminating");
+ mavlink_log_info(_navigator->get_mavlink_fd(), "#audio: RC not regained, terminating");
+ _navigator->get_mission_result()->stay_in_failsafe = true;
+ _navigator->publish_mission_result();
+ break;
+ case RCL_STATE_TERMINATE:
+ warnx("rcl end");
+ _rcl_state = RCL_STATE_END;
+ break;
+ default:
+ break;
+ }
+}
diff --git a/src/modules/navigator/rcloss.h b/src/modules/navigator/rcloss.h
new file mode 100644
index 000000000..bcb74d877
--- /dev/null
+++ b/src/modules/navigator/rcloss.h
@@ -0,0 +1,88 @@
+/***************************************************************************
+ *
+ * Copyright (c) 2013-2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 rcloss.h
+ * Helper class for RC Loss Mode acording to the OBC rules
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#ifndef NAVIGATOR_RCLOSS_H
+#define NAVIGATOR_RCLOSS_H
+
+#include <controllib/blocks.hpp>
+#include <controllib/block/BlockParam.hpp>
+
+#include <uORB/Subscription.hpp>
+
+#include "navigator_mode.h"
+#include "mission_block.h"
+
+class Navigator;
+
+class RCLoss : public MissionBlock
+{
+public:
+ RCLoss(Navigator *navigator, const char *name);
+
+ ~RCLoss();
+
+ virtual void on_inactive();
+
+ virtual void on_activation();
+
+ virtual void on_active();
+
+private:
+ /* Params */
+ control::BlockParamFloat _param_loitertime;
+
+ enum RCLState {
+ RCL_STATE_NONE = 0,
+ RCL_STATE_LOITER = 1,
+ RCL_STATE_TERMINATE = 2,
+ RCL_STATE_END = 3
+ } _rcl_state;
+
+ /**
+ * Set the RCL item
+ */
+ void set_rcl_item();
+
+ /**
+ * Move to next RCL item
+ */
+ void advance_rcl();
+
+};
+#endif
diff --git a/src/modules/navigator/rcloss_params.c b/src/modules/navigator/rcloss_params.c
new file mode 100644
index 000000000..f1a01c73b
--- /dev/null
+++ b/src/modules/navigator/rcloss_params.c
@@ -0,0 +1,60 @@
+/****************************************************************************
+ *
+ * Copyright (c) 2014 PX4 Development Team. All rights reserved.
+ *
+ * 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 rcloss_params.c
+ *
+ * Parameters for RC Loss (OBC)
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+
+#include <nuttx/config.h>
+
+#include <systemlib/param/param.h>
+
+/*
+ * OBC RC Loss mode parameters, accessible via MAVLink
+ */
+
+/**
+ * Loiter Time
+ *
+ * The amount of time in seconds the system should loiter at current position before termination
+ * Set to -1 to make the system skip loitering
+ *
+ * @unit seconds
+ * @min -1.0
+ * @group RCL
+ */
+PARAM_DEFINE_FLOAT(NAV_RCL_LT, 120.0f);