Moved multirotor controllers

15 files changed, 0 insertions, 2279 deletions

diff --git a/apps/multirotor_att_control/Makefile b/apps/multirotor_att_control/Makefile
deleted file mode 100755
index 03cf33e43..000000000
--- a/apps/multirotor_att_control/Makefile
+++ /dev/null
@@ -1,42 +0,0 @@
-############################################################################
-#
-#   Copyright (C) 2012 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.
-#
-############################################################################
-
-#
-# Makefile to build uORB
-#
-
-APPNAME		 = multirotor_att_control
-PRIORITY	 = SCHED_PRIORITY_MAX - 15
-STACKSIZE	 = 2048
-
-include $(APPDIR)/mk/app.mk
diff --git a/apps/multirotor_att_control/multirotor_att_control_main.c b/apps/multirotor_att_control/multirotor_att_control_main.c
deleted file mode 100644
index d94c0a69c..000000000
--- a/apps/multirotor_att_control/multirotor_att_control_main.c
+++ /dev/null
@@ -1,485 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *   Author: Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_att_control_main.c
- *
- * Implementation of multirotor attitude control main loop.
- *
- * @author Lorenz Meier <lm@inf.ethz.ch>
- */
-
-#include <nuttx/config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdbool.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <debug.h>
-#include <getopt.h>
-#include <time.h>
-#include <math.h>
-#include <poll.h>
-#include <sys/prctl.h>
-#include <drivers/drv_hrt.h>
-#include <uORB/uORB.h>
-#include <drivers/drv_gyro.h>
-#include <uORB/topics/vehicle_status.h>
-#include <uORB/topics/vehicle_attitude.h>
-#include <uORB/topics/vehicle_attitude_setpoint.h>
-#include <uORB/topics/manual_control_setpoint.h>
-#include <uORB/topics/offboard_control_setpoint.h>
-#include <uORB/topics/vehicle_rates_setpoint.h>
-#include <uORB/topics/sensor_combined.h>
-#include <uORB/topics/actuator_controls.h>
-#include <uORB/topics/parameter_update.h>
-
-#include <systemlib/perf_counter.h>
-#include <systemlib/systemlib.h>
-#include <systemlib/param/param.h>
-
-#include "multirotor_attitude_control.h"
-#include "multirotor_rate_control.h"
-
-PARAM_DEFINE_FLOAT(MC_RCLOSS_THR, 0.0f); // This defines the throttle when the RC signal is lost.
-
-__EXPORT int multirotor_att_control_main(int argc, char *argv[]);
-
-static bool thread_should_exit;
-static int mc_task;
-static bool motor_test_mode = false;
-
-static orb_advert_t actuator_pub;
-
-static struct vehicle_status_s state;
-
-static int
-mc_thread_main(int argc, char *argv[])
-{
-	/* declare and safely initialize all structs */
-	memset(&state, 0, sizeof(state));
-	struct vehicle_attitude_s att;
-	memset(&att, 0, sizeof(att));
-	struct vehicle_attitude_setpoint_s att_sp;
-	memset(&att_sp, 0, sizeof(att_sp));
-	struct manual_control_setpoint_s manual;
-	memset(&manual, 0, sizeof(manual));
-	struct sensor_combined_s raw;
-	memset(&raw, 0, sizeof(raw));
-	struct offboard_control_setpoint_s offboard_sp;
-	memset(&offboard_sp, 0, sizeof(offboard_sp));
-	struct vehicle_rates_setpoint_s rates_sp;
-	memset(&rates_sp, 0, sizeof(rates_sp));
-
-	struct actuator_controls_s actuators;
-	memset(&actuators, 0, sizeof(actuators));
-
-	/* subscribe to attitude, motor setpoints and system state */
-	int att_sub = orb_subscribe(ORB_ID(vehicle_attitude));
-	int param_sub = orb_subscribe(ORB_ID(parameter_update));
-	int att_setpoint_sub = orb_subscribe(ORB_ID(vehicle_attitude_setpoint));
-	int setpoint_sub = orb_subscribe(ORB_ID(offboard_control_setpoint));
-	int state_sub = orb_subscribe(ORB_ID(vehicle_status));
-	int manual_sub = orb_subscribe(ORB_ID(manual_control_setpoint));
-	int sensor_sub = orb_subscribe(ORB_ID(sensor_combined));
-
-	/*
-	 * Do not rate-limit the loop to prevent aliasing
-	 * if rate-limiting would be desired later, the line below would
-	 * enable it.
-	 *
-	 * rate-limit the attitude subscription to 200Hz to pace our loop
-	 * orb_set_interval(att_sub, 5);
-	 */
-	struct pollfd fds[2] = {
-		{ .fd = att_sub, .events = POLLIN },
-		{ .fd = param_sub, .events = POLLIN }
-	};
-
-	/* publish actuator controls */
-	for (unsigned i = 0; i < NUM_ACTUATOR_CONTROLS; i++) {
-		actuators.control[i] = 0.0f;
-	}
-
-	actuator_pub = orb_advertise(ORB_ID_VEHICLE_ATTITUDE_CONTROLS, &actuators);
-	orb_advert_t att_sp_pub = orb_advertise(ORB_ID(vehicle_attitude_setpoint), &att_sp);
-	orb_advert_t rates_sp_pub = orb_advertise(ORB_ID(vehicle_rates_setpoint), &rates_sp);
-	int rates_sp_sub = orb_subscribe(ORB_ID(vehicle_rates_setpoint));
-
-	/* register the perf counter */
-	perf_counter_t mc_loop_perf = perf_alloc(PC_ELAPSED, "multirotor_att_control_runtime");
-	perf_counter_t mc_interval_perf = perf_alloc(PC_INTERVAL, "multirotor_att_control_interval");
-	perf_counter_t mc_err_perf = perf_alloc(PC_COUNT, "multirotor_att_control_err");
-
-	/* welcome user */
-	printf("[multirotor_att_control] starting\n");
-
-	/* store last control mode to detect mode switches */
-	bool flag_control_manual_enabled = false;
-	bool flag_control_attitude_enabled = false;
-	bool flag_system_armed = false;
-
-	/* store if yaw position or yaw speed has been changed */
-	bool control_yaw_position = true;
-
-	/* store if we stopped a yaw movement */
-	bool first_time_after_yaw_speed_control = true;
-
-	/* prepare the handle for the failsafe throttle */
-	param_t failsafe_throttle_handle = param_find("MC_RCLOSS_THR");
-	float failsafe_throttle = 0.0f;
-
-
-	while (!thread_should_exit) {
-
-		/* wait for a sensor update, check for exit condition every 500 ms */
-		int ret = poll(fds, 2, 500);
-
-		if (ret < 0) {
-			/* poll error, count it in perf */
-			perf_count(mc_err_perf);
-
-		} else if (ret == 0) {
-			/* no return value, ignore */
-		} else {
-
-			/* only update parameters if they changed */
-			if (fds[1].revents & POLLIN) {
-				/* read from param to clear updated flag */
-				struct parameter_update_s update;
-				orb_copy(ORB_ID(parameter_update), param_sub, &update);
-
-				/* update parameters */
-				// XXX no params here yet
-			}
-
-			/* only run controller if attitude changed */
-			if (fds[0].revents & POLLIN) {
-
-				perf_begin(mc_loop_perf);
-
-				/* get a local copy of system state */
-				bool updated;
-				orb_check(state_sub, &updated);
-
-				if (updated) {
-					orb_copy(ORB_ID(vehicle_status), state_sub, &state);
-				}
-
-				/* get a local copy of manual setpoint */
-				orb_copy(ORB_ID(manual_control_setpoint), manual_sub, &manual);
-				/* get a local copy of attitude */
-				orb_copy(ORB_ID(vehicle_attitude), att_sub, &att);
-				/* get a local copy of attitude setpoint */
-				orb_copy(ORB_ID(vehicle_attitude_setpoint), att_setpoint_sub, &att_sp);
-				/* get a local copy of rates setpoint */
-				orb_check(setpoint_sub, &updated);
-
-				if (updated) {
-					orb_copy(ORB_ID(offboard_control_setpoint), setpoint_sub, &offboard_sp);
-				}
-
-				/* get a local copy of the current sensor values */
-				orb_copy(ORB_ID(sensor_combined), sensor_sub, &raw);
-
-
-				/** STEP 1: Define which input is the dominating control input */
-				if (state.flag_control_offboard_enabled) {
-					/* offboard inputs */
-					if (offboard_sp.mode == OFFBOARD_CONTROL_MODE_DIRECT_RATES) {
-						rates_sp.roll = offboard_sp.p1;
-						rates_sp.pitch = offboard_sp.p2;
-						rates_sp.yaw = offboard_sp.p3;
-						rates_sp.thrust = offboard_sp.p4;
-//						printf("thrust_rate=%8.4f\n",offboard_sp.p4);
-						rates_sp.timestamp = hrt_absolute_time();
-						orb_publish(ORB_ID(vehicle_rates_setpoint), rates_sp_pub, &rates_sp);
-
-					} else if (offboard_sp.mode == OFFBOARD_CONTROL_MODE_DIRECT_ATTITUDE) {
-						att_sp.roll_body = offboard_sp.p1;
-						att_sp.pitch_body = offboard_sp.p2;
-						att_sp.yaw_body = offboard_sp.p3;
-						att_sp.thrust = offboard_sp.p4;
-//						printf("thrust_att=%8.4f\n",offboard_sp.p4);
-						att_sp.timestamp = hrt_absolute_time();
-						/* STEP 2: publish the result to the vehicle actuators */
-						orb_publish(ORB_ID(vehicle_attitude_setpoint), att_sp_pub, &att_sp);
-					}
-
-
-				} else if (state.flag_control_manual_enabled) {
-
-					if (state.flag_control_attitude_enabled) {
-
-						/* initialize to current yaw if switching to manual or att control */
-						if (state.flag_control_attitude_enabled != flag_control_attitude_enabled ||
-						    state.flag_control_manual_enabled != flag_control_manual_enabled ||
-						    state.flag_system_armed != flag_system_armed) {
-							att_sp.yaw_body = att.yaw;
-						}
-
-						static bool rc_loss_first_time = true;
-
-						/* if the RC signal is lost, try to stay level and go slowly back down to ground */
-						if (state.rc_signal_lost) {
-							/* the failsafe throttle is stored as a parameter, as it depends on the copter and the payload */
-							param_get(failsafe_throttle_handle, &failsafe_throttle);
-							att_sp.roll_body = 0.0f;
-							att_sp.pitch_body = 0.0f;
-
-							/*
-							 * Only go to failsafe throttle if last known throttle was
-							 * high enough to create some lift to make hovering state likely.
-							 *
-							 * This is to prevent that someone landing, but not disarming his
-							 * multicopter (throttle = 0) does not make it jump up in the air
-							 * if shutting down his remote.
-							 */
-							if (isfinite(manual.throttle) && manual.throttle > 0.2f) {
-								att_sp.thrust = failsafe_throttle;
-
-							} else {
-								att_sp.thrust = 0.0f;
-							}
-
-							/* keep current yaw, do not attempt to go to north orientation,
-							 * since if the pilot regains RC control, he will be lost regarding
-							 * the current orientation.
-							 */
-							if (rc_loss_first_time)
-								att_sp.yaw_body = att.yaw;
-
-							rc_loss_first_time = false;
-
-						} else {
-							rc_loss_first_time = true;
-
-							att_sp.roll_body = manual.roll;
-							att_sp.pitch_body = manual.pitch;
-
-							/* set attitude if arming */
-							if (!flag_control_attitude_enabled && state.flag_system_armed) {
-								att_sp.yaw_body = att.yaw;
-							}
-
-							/* act if stabilization is active or if the (nonsense) direct pass through mode is set */
-							if (state.manual_control_mode == VEHICLE_MANUAL_CONTROL_MODE_SAS ||
-							    state.manual_control_mode == VEHICLE_MANUAL_CONTROL_MODE_DIRECT) {
-
-								if (state.manual_sas_mode == VEHICLE_MANUAL_SAS_MODE_ROLL_PITCH_ABS_YAW_RATE) {
-									rates_sp.yaw = manual.yaw;
-									control_yaw_position = false;
-
-								} else {
-									/*
-									 * This mode SHOULD be the default mode, which is:
-									 * VEHICLE_MANUAL_SAS_MODE_ROLL_PITCH_ABS_YAW_ABS
-									 *
-									 * However, we fall back to this setting for all other (nonsense)
-									 * settings as well.
-									 */
-
-									/* only move setpoint if manual input is != 0 */
-									if ((manual.yaw < -0.01f || 0.01f < manual.yaw) && manual.throttle > 0.3f) {
-										rates_sp.yaw = manual.yaw;
-										control_yaw_position = false;
-										first_time_after_yaw_speed_control = true;
-
-									} else {
-										if (first_time_after_yaw_speed_control) {
-											att_sp.yaw_body = att.yaw;
-											first_time_after_yaw_speed_control = false;
-										}
-
-										control_yaw_position = true;
-									}
-								}
-							}
-
-							att_sp.thrust = manual.throttle;
-							att_sp.timestamp = hrt_absolute_time();
-						}
-
-						/* STEP 2: publish the controller output */
-						orb_publish(ORB_ID(vehicle_attitude_setpoint), att_sp_pub, &att_sp);
-
-						if (motor_test_mode) {
-							printf("testmode");
-							att_sp.roll_body = 0.0f;
-							att_sp.pitch_body = 0.0f;
-							att_sp.yaw_body = 0.0f;
-							att_sp.thrust = 0.1f;
-							att_sp.timestamp = hrt_absolute_time();
-							/* STEP 2: publish the result to the vehicle actuators */
-							orb_publish(ORB_ID(vehicle_attitude_setpoint), att_sp_pub, &att_sp);
-						}
-
-					} else {
-						/* manual rate inputs, from RC control or joystick */
-						if (state.flag_control_rates_enabled &&
-						    state.manual_control_mode == VEHICLE_MANUAL_CONTROL_MODE_RATES) {
-							rates_sp.roll = manual.roll;
-
-							rates_sp.pitch = manual.pitch;
-							rates_sp.yaw = manual.yaw;
-							rates_sp.thrust = manual.throttle;
-							rates_sp.timestamp = hrt_absolute_time();
-						}
-					}
-
-				}
-
-				/** STEP 3: Identify the controller setup to run and set up the inputs correctly */
-				if (state.flag_control_attitude_enabled) {
-					multirotor_control_attitude(&att_sp, &att, &rates_sp, control_yaw_position);
-
-					orb_publish(ORB_ID(vehicle_rates_setpoint), rates_sp_pub, &rates_sp);
-				}
-
-				/* measure in what intervals the controller runs */
-				perf_count(mc_interval_perf);
-
-				float gyro[3];
-
-				/* get current rate setpoint */
-				bool rates_sp_valid = false;
-				orb_check(rates_sp_sub, &rates_sp_valid);
-
-				if (rates_sp_valid) {
-					orb_copy(ORB_ID(vehicle_rates_setpoint), rates_sp_sub, &rates_sp);
-				}
-
-				/* apply controller */
-				gyro[0] = att.rollspeed;
-				gyro[1] = att.pitchspeed;
-				gyro[2] = att.yawspeed;
-
-				multirotor_control_rates(&rates_sp, gyro, &actuators);
-				orb_publish(ORB_ID_VEHICLE_ATTITUDE_CONTROLS, actuator_pub, &actuators);
-
-				/* update state */
-				flag_control_attitude_enabled = state.flag_control_attitude_enabled;
-				flag_control_manual_enabled = state.flag_control_manual_enabled;
-				flag_system_armed = state.flag_system_armed;
-
-				perf_end(mc_loop_perf);
-			} /* end of poll call for attitude updates */
-		} /* end of poll return value check */
-	}
-
-	printf("[multirotor att control] stopping, disarming motors.\n");
-
-	/* kill all outputs */
-	for (unsigned i = 0; i < NUM_ACTUATOR_CONTROLS; i++)
-		actuators.control[i] = 0.0f;
-
-	orb_publish(ORB_ID_VEHICLE_ATTITUDE_CONTROLS, actuator_pub, &actuators);
-
-
-	close(att_sub);
-	close(state_sub);
-	close(manual_sub);
-	close(actuator_pub);
-	close(att_sp_pub);
-
-	perf_print_counter(mc_loop_perf);
-	perf_free(mc_loop_perf);
-
-	fflush(stdout);
-	exit(0);
-}
-
-static void
-usage(const char *reason)
-{
-	if (reason)
-		fprintf(stderr, "%s\n", reason);
-
-	fprintf(stderr, "usage: multirotor_att_control [-m <mode>] [-t] {start|status|stop}\n");
-	fprintf(stderr, "    <mode> is 'rates' or 'attitude'\n");
-	fprintf(stderr, "    -t enables motor test mode with 10%% thrust\n");
-	exit(1);
-}
-
-int multirotor_att_control_main(int argc, char *argv[])
-{
-	int	ch;
-	unsigned int optioncount = 0;
-
-	while ((ch = getopt(argc, argv, "tm:")) != EOF) {
-		switch (ch) {
-		case 't':
-			motor_test_mode = true;
-			optioncount += 1;
-			break;
-
-		case ':':
-			usage("missing parameter");
-			break;
-
-		default:
-			fprintf(stderr, "option: -%c\n", ch);
-			usage("unrecognized option");
-			break;
-		}
-	}
-
-	argc -= optioncount;
-	//argv += optioncount;
-
-	if (argc < 1)
-		usage("missing command");
-
-	if (!strcmp(argv[1 + optioncount], "start")) {
-
-		thread_should_exit = false;
-		mc_task = task_spawn("multirotor_att_control",
-				     SCHED_DEFAULT,
-				     SCHED_PRIORITY_MAX - 15,
-				     2048,
-				     mc_thread_main,
-				     NULL);
-		exit(0);
-	}
-
-	if (!strcmp(argv[1 + optioncount], "stop")) {
-		thread_should_exit = true;
-		exit(0);
-	}
-
-	usage("unrecognized command");
-	exit(1);
-}
diff --git a/apps/multirotor_att_control/multirotor_attitude_control.c b/apps/multirotor_att_control/multirotor_attitude_control.c
deleted file mode 100644
index 76dbb36d3..000000000
--- a/apps/multirotor_att_control/multirotor_attitude_control.c
+++ /dev/null
@@ -1,249 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2008-2012 PX4 Development Team. All rights reserved.
- *   Author: @author Thomas Gubler <thomasgubler@student.ethz.ch>
- *           @author Julian Oes <joes@student.ethz.ch>
- *           @author Laurens Mackay <mackayl@student.ethz.ch>
- *           @author Tobias Naegeli <naegelit@student.ethz.ch>
- *           @author Martin Rutschmann <rutmarti@student.ethz.ch>
- *           @author Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_attitude_control.c
- * Implementation of attitude controller
- */
-
-#include "multirotor_attitude_control.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <float.h>
-#include <math.h>
-#include <systemlib/pid/pid.h>
-#include <systemlib/param/param.h>
-#include <drivers/drv_hrt.h>
-
-PARAM_DEFINE_FLOAT(MC_YAWPOS_P, 0.3f);
-PARAM_DEFINE_FLOAT(MC_YAWPOS_I, 0.15f);
-PARAM_DEFINE_FLOAT(MC_YAWPOS_D, 0.0f);
-//PARAM_DEFINE_FLOAT(MC_YAWPOS_AWU, 1.0f);
-//PARAM_DEFINE_FLOAT(MC_YAWPOS_LIM, 3.0f);
-
-PARAM_DEFINE_FLOAT(MC_ATT_P, 0.2f);
-PARAM_DEFINE_FLOAT(MC_ATT_I, 0.0f);
-PARAM_DEFINE_FLOAT(MC_ATT_D, 0.05f);
-//PARAM_DEFINE_FLOAT(MC_ATT_AWU, 0.05f);
-//PARAM_DEFINE_FLOAT(MC_ATT_LIM, 0.4f);
-
-//PARAM_DEFINE_FLOAT(MC_ATT_XOFF, 0.0f);
-//PARAM_DEFINE_FLOAT(MC_ATT_YOFF, 0.0f);
-
-struct mc_att_control_params {
-	float yaw_p;
-	float yaw_i;
-	float yaw_d;
-	//float yaw_awu;
-	//float yaw_lim;
-
-	float att_p;
-	float att_i;
-	float att_d;
-	//float att_awu;
-	//float att_lim;
-
-	//float att_xoff;
-	//float att_yoff;
-};
-
-struct mc_att_control_param_handles {
-	param_t yaw_p;
-	param_t yaw_i;
-	param_t yaw_d;
-	//param_t yaw_awu;
-	//param_t yaw_lim;
-
-	param_t att_p;
-	param_t att_i;
-	param_t att_d;
-	//param_t att_awu;
-	//param_t att_lim;
-
-	//param_t att_xoff;
-	//param_t att_yoff;
-};
-
-/**
- * Initialize all parameter handles and values
- *
- */
-static int parameters_init(struct mc_att_control_param_handles *h);
-
-/**
- * Update all parameters
- *
- */
-static int parameters_update(const struct mc_att_control_param_handles *h, struct mc_att_control_params *p);
-
-
-static int parameters_init(struct mc_att_control_param_handles *h)
-{
-	/* PID parameters */
-	h->yaw_p 	=	param_find("MC_YAWPOS_P");
-	h->yaw_i 	=	param_find("MC_YAWPOS_I");
-	h->yaw_d 	=	param_find("MC_YAWPOS_D");
-	//h->yaw_awu 	=	param_find("MC_YAWPOS_AWU");
-	//h->yaw_lim 	=	param_find("MC_YAWPOS_LIM");
-
-	h->att_p 	= 	param_find("MC_ATT_P");
-	h->att_i 	= 	param_find("MC_ATT_I");
-	h->att_d 	= 	param_find("MC_ATT_D");
-	//h->att_awu 	= 	param_find("MC_ATT_AWU");
-	//h->att_lim 	= 	param_find("MC_ATT_LIM");
-
-	//h->att_xoff 	= 	param_find("MC_ATT_XOFF");
-	//h->att_yoff 	= 	param_find("MC_ATT_YOFF");
-
-	return OK;
-}
-
-static int parameters_update(const struct mc_att_control_param_handles *h, struct mc_att_control_params *p)
-{
-	param_get(h->yaw_p, &(p->yaw_p));
-	param_get(h->yaw_i, &(p->yaw_i));
-	param_get(h->yaw_d, &(p->yaw_d));
-	//param_get(h->yaw_awu, &(p->yaw_awu));
-	//param_get(h->yaw_lim, &(p->yaw_lim));
-
-	param_get(h->att_p, &(p->att_p));
-	param_get(h->att_i, &(p->att_i));
-	param_get(h->att_d, &(p->att_d));
-	//param_get(h->att_awu, &(p->att_awu));
-	//param_get(h->att_lim, &(p->att_lim));
-
-	//param_get(h->att_xoff, &(p->att_xoff));
-	//param_get(h->att_yoff, &(p->att_yoff));
-
-	return OK;
-}
-
-void multirotor_control_attitude(const struct vehicle_attitude_setpoint_s *att_sp,
-				 const struct vehicle_attitude_s *att, struct vehicle_rates_setpoint_s *rates_sp, bool control_yaw_position)
-{
-	static uint64_t last_run = 0;
-	static uint64_t last_input = 0;
-	float deltaT = (hrt_absolute_time() - last_run) / 1000000.0f;
-	float dT_input = (hrt_absolute_time() - last_input) / 1000000.0f;
-	last_run = hrt_absolute_time();
-
-	if (last_input != att_sp->timestamp) {
-		last_input = att_sp->timestamp;
-	}
-
-	static int sensor_delay;
-	sensor_delay = hrt_absolute_time() - att->timestamp;
-
-	static int motor_skip_counter = 0;
-
-	static PID_t pitch_controller;
-	static PID_t roll_controller;
-
-	static struct mc_att_control_params p;
-	static struct mc_att_control_param_handles h;
-
-	static bool initialized = false;
-
-	static float yaw_error;
-
-	/* initialize the pid controllers when the function is called for the first time */
-	if (initialized == false) {
-		parameters_init(&h);
-		parameters_update(&h, &p);
-
-		pid_init(&pitch_controller, p.att_p, p.att_i, p.att_d, 1000.0f,
-			 1000.0f, PID_MODE_DERIVATIV_SET);
-		pid_init(&roll_controller, p.att_p, p.att_i, p.att_d, 1000.0f,
-			 1000.0f, PID_MODE_DERIVATIV_SET);
-
-		initialized = true;
-	}
-
-	/* load new parameters with lower rate */
-	if (motor_skip_counter % 500 == 0) {
-		/* update parameters from storage */
-		parameters_update(&h, &p);
-
-		/* apply parameters */
-		pid_set_parameters(&pitch_controller, p.att_p, p.att_i, p.att_d, 1000.0f, 1000.0f);
-		pid_set_parameters(&roll_controller, p.att_p, p.att_i, p.att_d, 1000.0f, 1000.0f);
-	}
-
-	/* reset integral if on ground */
-	if (att_sp->thrust < 0.1f) {
-		pid_reset_integral(&pitch_controller);
-		pid_reset_integral(&roll_controller);
-	}
-
-
-	/* calculate current control outputs */
-
-	/* control pitch (forward) output */
-	rates_sp->pitch = pid_calculate(&pitch_controller, att_sp->pitch_body ,
-					att->pitch, att->pitchspeed, deltaT);
-
-	/* control roll (left/right) output */
-	rates_sp->roll = pid_calculate(&roll_controller, att_sp->roll_body ,
-				       att->roll, att->rollspeed, deltaT);
-
-	if (control_yaw_position) {
-		/* control yaw rate */
-
-		/* positive error: rotate to right, negative error, rotate to left (NED frame) */
-		// yaw_error = _wrap_pi(att_sp->yaw_body - att->yaw);
-
-		yaw_error = att_sp->yaw_body - att->yaw;
-
-		if (yaw_error > M_PI_F) {
-			yaw_error -= M_TWOPI_F;
-
-		} else if (yaw_error < -M_PI_F) {
-			yaw_error += M_TWOPI_F;
-		}
-
-		rates_sp->yaw = p.yaw_p * (yaw_error) - (p.yaw_d * att->yawspeed);
-	}
-
-	rates_sp->thrust = att_sp->thrust;
-
-	motor_skip_counter++;
-}
diff --git a/apps/multirotor_att_control/multirotor_attitude_control.h b/apps/multirotor_att_control/multirotor_attitude_control.h
deleted file mode 100644
index 2cf83e443..000000000
--- a/apps/multirotor_att_control/multirotor_attitude_control.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *   Author: @author Thomas Gubler <thomasgubler@student.ethz.ch>
- *           @author Julian Oes <joes@student.ethz.ch>
- *           @author Laurens Mackay <mackayl@student.ethz.ch>
- *           @author Tobias Naegeli <naegelit@student.ethz.ch>
- *           @author Martin Rutschmann <rutmarti@student.ethz.ch>
- *           @author Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_attitude_control.h
- * Attitude control for multi rotors.
- */
-
-#ifndef MULTIROTOR_ATTITUDE_CONTROL_H_
-#define MULTIROTOR_ATTITUDE_CONTROL_H_
-
-#include <uORB/uORB.h>
-#include <uORB/topics/vehicle_attitude.h>
-#include <uORB/topics/vehicle_attitude_setpoint.h>
-#include <uORB/topics/vehicle_rates_setpoint.h>
-#include <uORB/topics/actuator_controls.h>
-
-void multirotor_control_attitude(const struct vehicle_attitude_setpoint_s *att_sp,
-				 const struct vehicle_attitude_s *att, struct vehicle_rates_setpoint_s *rates_sp, bool control_yaw_position);
-
-#endif /* MULTIROTOR_ATTITUDE_CONTROL_H_ */
diff --git a/apps/multirotor_att_control/multirotor_rate_control.c b/apps/multirotor_att_control/multirotor_rate_control.c
deleted file mode 100644
index deba1ac03..000000000
--- a/apps/multirotor_att_control/multirotor_rate_control.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *   Author: Tobias Naegeli <naegelit@student.ethz.ch>
- *           Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_rate_control.c
- *
- * Implementation of rate controller
- *
- * @author Tobias Naegeli <naegelit@student.ethz.ch>
- * @author Lorenz Meier <lm@inf.ethz.ch>
- */
-
-#include "multirotor_rate_control.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <float.h>
-#include <math.h>
-#include <systemlib/pid/pid.h>
-#include <systemlib/param/param.h>
-#include <systemlib/err.h>
-#include <drivers/drv_hrt.h>
-
-PARAM_DEFINE_FLOAT(MC_YAWRATE_P, 0.0f); /* same on Flamewheel */
-PARAM_DEFINE_FLOAT(MC_YAWRATE_D, 0.0f);
-PARAM_DEFINE_FLOAT(MC_YAWRATE_I, 0.0f);
-//PARAM_DEFINE_FLOAT(MC_YAWRATE_AWU, 0.0f);
-//PARAM_DEFINE_FLOAT(MC_YAWRATE_LIM, 1.0f);
-
-PARAM_DEFINE_FLOAT(MC_ATTRATE_P, 0.0f); /* 0.15 F405 Flamewheel */
-PARAM_DEFINE_FLOAT(MC_ATTRATE_D, 0.0f);
-PARAM_DEFINE_FLOAT(MC_ATTRATE_I, 0.0f);
-//PARAM_DEFINE_FLOAT(MC_ATTRATE_AWU, 0.05f);
-//PARAM_DEFINE_FLOAT(MC_ATTRATE_LIM, 1.0f);	/**< roughly < 500 deg/s limit */
-
-struct mc_rate_control_params {
-
-	float yawrate_p;
-	float yawrate_d;
-	float yawrate_i;
-	//float yawrate_awu;
-	//float yawrate_lim;
-
-	float attrate_p;
-	float attrate_d;
-	float attrate_i;
-	//float attrate_awu;
-	//float attrate_lim;
-
-	float rate_lim;
-};
-
-struct mc_rate_control_param_handles {
-
-	param_t yawrate_p;
-	param_t yawrate_i;
-	param_t yawrate_d;
-	//param_t yawrate_awu;
-	//param_t yawrate_lim;
-
-	param_t attrate_p;
-	param_t attrate_i;
-	param_t attrate_d;
-	//param_t attrate_awu;
-	//param_t attrate_lim;
-};
-
-/**
- * Initialize all parameter handles and values
- *
- */
-static int parameters_init(struct mc_rate_control_param_handles *h);
-
-/**
- * Update all parameters
- *
- */
-static int parameters_update(const struct mc_rate_control_param_handles *h, struct mc_rate_control_params *p);
-
-
-static int parameters_init(struct mc_rate_control_param_handles *h)
-{
-	/* PID parameters */
-	h->yawrate_p 	=	param_find("MC_YAWRATE_P");
-	h->yawrate_i 	=	param_find("MC_YAWRATE_I");
-	h->yawrate_d 	=	param_find("MC_YAWRATE_D");
-	//h->yawrate_awu 	=	param_find("MC_YAWRATE_AWU");
-	//h->yawrate_lim 	=	param_find("MC_YAWRATE_LIM");
-
-	h->attrate_p 	= 	param_find("MC_ATTRATE_P");
-	h->attrate_i 	= 	param_find("MC_ATTRATE_I");
-	h->attrate_d 	= 	param_find("MC_ATTRATE_D");
-	//h->attrate_awu 	= 	param_find("MC_ATTRATE_AWU");
-	//h->attrate_lim 	= 	param_find("MC_ATTRATE_LIM");
-
-	return OK;
-}
-
-static int parameters_update(const struct mc_rate_control_param_handles *h, struct mc_rate_control_params *p)
-{
-	param_get(h->yawrate_p, &(p->yawrate_p));
-	param_get(h->yawrate_i, &(p->yawrate_i));
-	param_get(h->yawrate_d, &(p->yawrate_d));
-	//param_get(h->yawrate_awu, &(p->yawrate_awu));
-	//param_get(h->yawrate_lim, &(p->yawrate_lim));
-
-	param_get(h->attrate_p, &(p->attrate_p));
-	param_get(h->attrate_i, &(p->attrate_i));
-	param_get(h->attrate_d, &(p->attrate_d));
-	//param_get(h->attrate_awu, &(p->attrate_awu));
-	//param_get(h->attrate_lim, &(p->attrate_lim));
-
-	return OK;
-}
-
-void multirotor_control_rates(const struct vehicle_rates_setpoint_s *rate_sp,
-			      const float rates[], struct actuator_controls_s *actuators)
-{
-	static float roll_control_last  = 0;
-	static float pitch_control_last = 0;
-	static uint64_t last_run = 0;
-	const float deltaT = (hrt_absolute_time() - last_run) / 1000000.0f;
-	static uint64_t last_input = 0;
-
-	float dT_input = (hrt_absolute_time() - last_input) / 1000000.0f;
-
-	if (last_input != rate_sp->timestamp) {
-		last_input = rate_sp->timestamp;
-	}
-
-	last_run = hrt_absolute_time();
-
-	static int motor_skip_counter = 0;
-
-	static struct mc_rate_control_params p;
-	static struct mc_rate_control_param_handles h;
-
-	static bool initialized = false;
-
-	/* initialize the pid controllers when the function is called for the first time */
-	if (initialized == false) {
-		parameters_init(&h);
-		parameters_update(&h, &p);
-		initialized = true;
-	}
-
-	/* load new parameters with lower rate */
-	if (motor_skip_counter % 2500 == 0) {
-		/* update parameters from storage */
-		parameters_update(&h, &p);
-		// warnx("rate ctrl: p.yawrate_p: %8.4f, loop: %d Hz, input: %d Hz",
-		// 	(double)p.yawrate_p, (int)(1.0f/deltaT), (int)(1.0f/dT_input));
-	}
-
-	/* calculate current control outputs */
-
-	/* control pitch (forward) output */
-	float pitch_control = p.attrate_p * (rate_sp->pitch - rates[1]) - (p.attrate_d * pitch_control_last);
-
-	/* increase resilience to faulty control inputs */
-	if (isfinite(pitch_control)) {
-		pitch_control_last = pitch_control;
-
-	} else {
-		pitch_control = 0.0f;
-		warnx("rej. NaN ctrl pitch");
-	}
-
-	/* control roll (left/right) output */
-	float roll_control = p.attrate_p * (rate_sp->roll - rates[0]) - (p.attrate_d * roll_control_last);
-
-	/* increase resilience to faulty control inputs */
-	if (isfinite(roll_control)) {
-		roll_control_last = roll_control;
-
-	} else {
-		roll_control = 0.0f;
-		warnx("rej. NaN ctrl roll");
-	}
-
-	/* control yaw rate */
-	float yaw_rate_control = p.yawrate_p * (rate_sp->yaw - rates[2]);
-
-	/* increase resilience to faulty control inputs */
-	if (!isfinite(yaw_rate_control)) {
-		yaw_rate_control = 0.0f;
-		warnx("rej. NaN ctrl yaw");
-	}
-
-	actuators->control[0] = roll_control;
-	actuators->control[1] = pitch_control;
-	actuators->control[2] = yaw_rate_control;
-	actuators->control[3] = rate_sp->thrust;
-
-	motor_skip_counter++;
-}
diff --git a/apps/multirotor_att_control/multirotor_rate_control.h b/apps/multirotor_att_control/multirotor_rate_control.h
deleted file mode 100644
index 03dec317a..000000000
--- a/apps/multirotor_att_control/multirotor_rate_control.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *   Author: @author Thomas Gubler <thomasgubler@student.ethz.ch>
- *           @author Julian Oes <joes@student.ethz.ch>
- *           @author Laurens Mackay <mackayl@student.ethz.ch>
- *           @author Tobias Naegeli <naegelit@student.ethz.ch>
- *           @author Martin Rutschmann <rutmarti@student.ethz.ch>
- *           @author Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_attitude_control.h
- * Attitude control for multi rotors.
- */
-
-#ifndef MULTIROTOR_RATE_CONTROL_H_
-#define MULTIROTOR_RATE_CONTROL_H_
-
-#include <uORB/uORB.h>
-#include <uORB/topics/vehicle_attitude.h>
-#include <uORB/topics/vehicle_rates_setpoint.h>
-#include <uORB/topics/actuator_controls.h>
-
-void multirotor_control_rates(const struct vehicle_rates_setpoint_s *rate_sp,
-			      const float rates[], struct actuator_controls_s *actuators);
-
-#endif /* MULTIROTOR_RATE_CONTROL_H_ */
diff --git a/apps/multirotor_pos_control/Makefile b/apps/multirotor_pos_control/Makefile
deleted file mode 100644
index c88c85435..000000000
--- a/apps/multirotor_pos_control/Makefile
+++ /dev/null
@@ -1,42 +0,0 @@
-############################################################################
-#
-#   Copyright (C) 2012 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.
-#
-############################################################################
-
-#
-# Makefile to build multirotor position control
-#
-
-APPNAME		 = multirotor_pos_control
-PRIORITY	 = SCHED_PRIORITY_MAX - 25
-STACKSIZE	 = 2048
-
-include $(APPDIR)/mk/app.mk
diff --git a/apps/multirotor_pos_control/multirotor_pos_control.c b/apps/multirotor_pos_control/multirotor_pos_control.c
deleted file mode 100644
index 7b8d83aa8..000000000
--- a/apps/multirotor_pos_control/multirotor_pos_control.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2008-2012 PX4 Development Team. All rights reserved.
- *   Author: Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_pos_control.c
- *
- * Skeleton for multirotor position controller
- */
-
-#include <nuttx/config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdbool.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <debug.h>
-#include <termios.h>
-#include <time.h>
-#include <sys/prctl.h>
-#include <drivers/drv_hrt.h>
-#include <uORB/uORB.h>
-#include <uORB/topics/vehicle_status.h>
-#include <uORB/topics/vehicle_attitude.h>
-#include <uORB/topics/manual_control_setpoint.h>
-#include <uORB/topics/vehicle_attitude_setpoint.h>
-#include <uORB/topics/vehicle_local_position_setpoint.h>
-#include <uORB/topics/vehicle_vicon_position.h>
-#include <systemlib/systemlib.h>
-
-#include "multirotor_pos_control_params.h"
-
-
-static bool thread_should_exit = false;		/**< Deamon exit flag */
-static bool thread_running = false;		/**< Deamon status flag */
-static int deamon_task;				/**< Handle of deamon task / thread */
-
-__EXPORT int multirotor_pos_control_main(int argc, char *argv[]);
-
-/**
- * Mainloop of position controller.
- */
-static int multirotor_pos_control_thread_main(int argc, char *argv[]);
-
-/**
- * Print the correct usage.
- */
-static void usage(const char *reason);
-
-static void
-usage(const char *reason)
-{
-	if (reason)
-		fprintf(stderr, "%s\n", reason);
-	fprintf(stderr, "usage: deamon {start|stop|status} [-p <additional params>]\n\n");
-	exit(1);
-}
-
-/**
- * The deamon app only briefly exists to start
- * the background job. The stack size assigned in the
- * Makefile does only apply to this management task.
- * 
- * The actual stack size should be set in the call
- * to task_spawn().
- */
-int multirotor_pos_control_main(int argc, char *argv[])
-{
-	if (argc < 1)
-		usage("missing command");
-
-	if (!strcmp(argv[1], "start")) {
-
-		if (thread_running) {
-			printf("multirotor pos control already running\n");
-			/* this is not an error */
-			exit(0);
-		}
-
-		thread_should_exit = false;
-		deamon_task = task_spawn("multirotor pos control",
-					 SCHED_DEFAULT,
-					 SCHED_PRIORITY_MAX - 60,
-					 4096,
-					 multirotor_pos_control_thread_main,
-					 (argv) ? (const char **)&argv[2] : (const char **)NULL);
-		exit(0);
-	}
-
-	if (!strcmp(argv[1], "stop")) {
-		thread_should_exit = true;
-		exit(0);
-	}
-
-	if (!strcmp(argv[1], "status")) {
-		if (thread_running) {
-			printf("\tmultirotor pos control app is running\n");
-		} else {
-			printf("\tmultirotor pos control app not started\n");
-		}
-		exit(0);
-	}
-
-	usage("unrecognized command");
-	exit(1);
-}
-
-static int
-multirotor_pos_control_thread_main(int argc, char *argv[])
-{
-	/* welcome user */
-	printf("[multirotor pos control] Control started, taking over position control\n");
-
-	/* structures */
-	struct vehicle_status_s state;
-	struct vehicle_attitude_s att;
-	//struct vehicle_global_position_setpoint_s global_pos_sp;
-	struct vehicle_local_position_setpoint_s local_pos_sp;
-	struct vehicle_vicon_position_s local_pos;
-	struct manual_control_setpoint_s manual;
-	struct vehicle_attitude_setpoint_s att_sp;
-
-	/* subscribe to attitude, motor setpoints and system state */
-	int att_sub = orb_subscribe(ORB_ID(vehicle_attitude));
-	int state_sub = orb_subscribe(ORB_ID(vehicle_status));
-	int manual_sub = orb_subscribe(ORB_ID(manual_control_setpoint));
-	int local_pos_sub = orb_subscribe(ORB_ID(vehicle_vicon_position));
-	//int global_pos_sp_sub = orb_subscribe(ORB_ID(vehicle_global_position_setpoint));
-	int local_pos_sp_sub = orb_subscribe(ORB_ID(vehicle_local_position_setpoint));
-
-	/* publish attitude setpoint */
-	orb_advert_t att_sp_pub = orb_advertise(ORB_ID(vehicle_attitude_setpoint), &att_sp);
-
-	thread_running = true;
-
-	int loopcounter = 0;
-
-	struct multirotor_position_control_params p;
-	struct multirotor_position_control_param_handles h;
-	parameters_init(&h);
-	parameters_update(&h, &p);
-
-
-	while (1) {
-		/* get a local copy of the vehicle state */
-		orb_copy(ORB_ID(vehicle_status), state_sub, &state);
-		/* get a local copy of manual setpoint */
-		orb_copy(ORB_ID(manual_control_setpoint), manual_sub, &manual);
-		/* get a local copy of attitude */
-		orb_copy(ORB_ID(vehicle_attitude), att_sub, &att);
-		/* get a local copy of local position */
-		orb_copy(ORB_ID(vehicle_vicon_position), local_pos_sub, &local_pos);
-		/* get a local copy of local position setpoint */
-		orb_copy(ORB_ID(vehicle_local_position_setpoint), local_pos_sp_sub, &local_pos_sp);
-
-		if (loopcounter == 500) {
-			parameters_update(&h, &p);
-			loopcounter = 0;
-		}
-
-		// if (state.state_machine == SYSTEM_STATE_AUTO) {
-			
-			// XXX IMPLEMENT POSITION CONTROL HERE
-
-			float dT = 1.0f / 50.0f;
-
-			float x_setpoint = 0.0f;
-
-			// XXX enable switching between Vicon and local position estimate
-			/* local pos is the Vicon position */
-
-			// XXX just an example, lacks rotation around world-body transformation
-			att_sp.pitch_body = (local_pos.x - x_setpoint) * p.p;
-			att_sp.roll_body = 0.0f;
-			att_sp.yaw_body = 0.0f;
-			att_sp.thrust = 0.3f;
-			att_sp.timestamp = hrt_absolute_time();
-
-			/* publish new attitude setpoint */
-			orb_publish(ORB_ID(vehicle_attitude_setpoint), att_sp_pub, &att_sp);
-		// } else if (state.state_machine == SYSTEM_STATE_STABILIZED) {
-			/* set setpoint to current position */
-			// XXX select pos reset channel on remote
-			/* reset setpoint to current position  (position hold) */
-			// if (1 == 2) {
-			// 	local_pos_sp.x = local_pos.x;
-			// 	local_pos_sp.y = local_pos.y;
-			// 	local_pos_sp.z = local_pos.z;
-			// 	local_pos_sp.yaw = att.yaw;
-			// }
-		// }
-
-		/* run at approximately 50 Hz */
-		usleep(20000);
-		loopcounter++;
-
-	}
-
-	printf("[multirotor pos control] ending now...\n");
-
-	thread_running = false;
-
-	fflush(stdout);
-	return 0;
-}
-
diff --git a/apps/multirotor_pos_control/multirotor_pos_control_params.c b/apps/multirotor_pos_control/multirotor_pos_control_params.c
deleted file mode 100644
index 6b73dc405..000000000
--- a/apps/multirotor_pos_control/multirotor_pos_control_params.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *   Author: Tobias Naegeli <naegelit@student.ethz.ch>
- *           Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_position_control_params.c
- * 
- * Parameters for EKF filter
- */
-
-#include "multirotor_pos_control_params.h"
-
-/* Extended Kalman Filter covariances */
-
-/* controller parameters */
-PARAM_DEFINE_FLOAT(MC_POS_P, 0.2f);
-
-int parameters_init(struct multirotor_position_control_param_handles *h)
-{
-	/* PID parameters */
-	h->p 	=	param_find("MC_POS_P");
-
-	return OK;
-}
-
-int parameters_update(const struct multirotor_position_control_param_handles *h, struct multirotor_position_control_params *p)
-{
-	param_get(h->p, &(p->p));
-
-	return OK;
-}
diff --git a/apps/multirotor_pos_control/multirotor_pos_control_params.h b/apps/multirotor_pos_control/multirotor_pos_control_params.h
deleted file mode 100644
index 274f6c22a..000000000
--- a/apps/multirotor_pos_control/multirotor_pos_control_params.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *   Author: Tobias Naegeli <naegelit@student.ethz.ch>
- *           Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 multirotor_position_control_params.h
- * 
- * Parameters for position controller
- */
-
-#include <systemlib/param/param.h>
-
-struct multirotor_position_control_params {
-	float p;
-	float i;
-	float d;
-};
-
-struct multirotor_position_control_param_handles {
-	param_t p;
-	param_t i;
-	param_t d;
-};
-
-/**
- * Initialize all parameter handles and values
- *
- */
-int parameters_init(struct multirotor_position_control_param_handles *h);
-
-/**
- * Update all parameters
- *
- */
-int parameters_update(const struct multirotor_position_control_param_handles *h, struct multirotor_position_control_params *p);
diff --git a/apps/multirotor_pos_control/position_control.c b/apps/multirotor_pos_control/position_control.c
deleted file mode 100644
index 9c53a5bf6..000000000
--- a/apps/multirotor_pos_control/position_control.c
+++ /dev/null
@@ -1,235 +0,0 @@
-// /****************************************************************************
-//  *
-//  *   Copyright (C) 2008-2012 PX4 Development Team. All rights reserved.
-//  *   Author: @author Lorenz Meier <lm@inf.ethz.ch>
-//  *           @author Laurens Mackay <mackayl@student.ethz.ch>
-//  *           @author Tobias Naegeli <naegelit@student.ethz.ch>
-//  *           @author Martin Rutschmann <rutmarti@student.ethz.ch>
-//  *
-//  * 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 multirotor_position_control.c
-//  * Implementation of the position control for a multirotor VTOL
-//  */
-
-// #include <stdio.h>
-// #include <stdlib.h>
-// #include <stdio.h>
-// #include <stdint.h>
-// #include <math.h>
-// #include <stdbool.h>
-// #include <float.h>
-// #include <systemlib/pid/pid.h>
-
-// #include "multirotor_position_control.h"
-
-// void control_multirotor_position(const struct vehicle_state_s *vstatus, const struct vehicle_manual_control_s *manual,
-//  const struct vehicle_attitude_s *att, const struct vehicle_local_position_s *local_pos,
-//  const struct vehicle_local_position_setpoint_s *local_pos_sp, struct vehicle_attitude_setpoint_s *att_sp)
-// {
-// 	static PID_t distance_controller;
-
-// 	static int read_ret;
-// 	static global_data_position_t position_estimated;
-
-// 	static uint16_t counter;
-
-// 	static bool initialized;
-// 	static uint16_t pm_counter;
-
-// 	static float lat_next;
-// 	static float lon_next;
-
-// 	static float pitch_current;
-
-// 	static float thrust_total;
-
-
-// 	if (initialized == false) {
-
-// 		pid_init(&distance_controller,
-// 			 global_data_parameter_storage->pm.param_values[PARAM_PID_POS_P],
-// 			 global_data_parameter_storage->pm.param_values[PARAM_PID_POS_I],
-// 			 global_data_parameter_storage->pm.param_values[PARAM_PID_POS_D],
-// 			 global_data_parameter_storage->pm.param_values[PARAM_PID_POS_AWU],
-// 			 PID_MODE_DERIVATIV_CALC, 150);//150
-
-// //		pid_pos_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_LIM];
-// //		pid_pos_z_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_Z_LIM];
-
-// 		thrust_total = 0.0f;
-
-// 		/* Position initialization */
-// 		/* Wait for new position estimate */
-// 		do {
-// 			read_ret = read_lock_position(&position_estimated);
-// 		} while (read_ret != 0);
-
-// 		lat_next = position_estimated.lat;
-// 		lon_next = position_estimated.lon;
-
-// 		/* attitude initialization */
-// 		global_data_lock(&global_data_attitude->access_conf);
-// 		pitch_current = global_data_attitude->pitch;
-// 		global_data_unlock(&global_data_attitude->access_conf);
-
-// 		initialized = true;
-// 	}
-
-// 	/* load new parameters with 10Hz */
-// 	if (counter % 50 == 0) {
-// 		if (global_data_trylock(&global_data_parameter_storage->access_conf) == 0) {
-// 			/* check whether new parameters are available */
-// 			if (global_data_parameter_storage->counter > pm_counter) {
-// 				pid_set_parameters(&distance_controller,
-// 						   global_data_parameter_storage->pm.param_values[PARAM_PID_POS_P],
-// 						   global_data_parameter_storage->pm.param_values[PARAM_PID_POS_I],
-// 						   global_data_parameter_storage->pm.param_values[PARAM_PID_POS_D],
-// 						   global_data_parameter_storage->pm.param_values[PARAM_PID_POS_AWU]);
-
-// //
-// //				pid_pos_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_LIM];
-// //				pid_pos_z_lim = global_data_parameter_storage->pm.param_values[PARAM_PID_POS_Z_LIM];
-
-// 				pm_counter = global_data_parameter_storage->counter;
-// 				printf("Position controller changed pid parameters\n");
-// 			}
-// 		}
-
-// 		global_data_unlock(&global_data_parameter_storage->access_conf);
-// 	}
-
-
-// 	/* Wait for new position estimate */
-// 	do {
-// 		read_ret = read_lock_position(&position_estimated);
-// 	} while (read_ret != 0);
-
-// 	/* Get next waypoint */ //TODO: add local copy
-
-// 	if (0 == global_data_trylock(&global_data_position_setpoint->access_conf)) {
-// 		lat_next = global_data_position_setpoint->x;
-// 		lon_next = global_data_position_setpoint->y;
-// 		global_data_unlock(&global_data_position_setpoint->access_conf);
-// 	}
-
-// 	/* Get distance to waypoint */
-// 	float distance_to_waypoint = get_distance_to_next_waypoint(position_estimated.lat , position_estimated.lon, lat_next, lon_next);
-// //	if(counter % 5 == 0)
-// //		printf("distance_to_waypoint: %.4f\n", distance_to_waypoint);
-
-// 	/* Get bearing to waypoint (direction on earth surface to next waypoint) */
-// 	float bearing = get_bearing_to_next_waypoint(position_estimated.lat, position_estimated.lon, lat_next, lon_next);
-
-// 	if (counter % 5 == 0)
-// 		printf("bearing: %.4f\n", bearing);
-
-// 	/* Calculate speed in direction of bearing (needed for controller) */
-// 	float speed_norm = sqrtf(position_estimated.vx  * position_estimated.vx + position_estimated.vy * position_estimated.vy);
-// //	if(counter % 5 == 0)
-// //		printf("speed_norm: %.4f\n", speed_norm);
-// 	float speed_to_waypoint = 0; //(position_estimated.vx * cosf(bearing) + position_estimated.vy * sinf(bearing))/speed_norm; //FIXME, TODO: re-enable this once we have a full estimate of the speed, then we can do a PID for the distance controller
-
-// 	/* Control Thrust in bearing direction  */
-// 	float horizontal_thrust = -pid_calculate(&distance_controller, 0, distance_to_waypoint, speed_to_waypoint,
-// 				  CONTROL_PID_POSITION_INTERVAL); //TODO: maybe this "-" sign is an error somewhere else
-
-// //	if(counter % 5 == 0)
-// //		printf("horizontal thrust: %.4f\n", horizontal_thrust);
-
-// 	/* Get total thrust (from remote for now) */
-// 	if (0 == global_data_trylock(&global_data_rc_channels->access_conf)) {
-// 		thrust_total = (float)global_data_rc_channels->chan[THROTTLE].scale; 												//TODO: how should we use the RC_CHANNELS_FUNCTION enum?
-// 		global_data_unlock(&global_data_rc_channels->access_conf);
-// 	}
-
-// 	const float max_gas = 500.0f;
-// 	thrust_total *= max_gas / 20000.0f; //TODO: check this
-// 	thrust_total += max_gas / 2.0f;
-
-
-// 	if (horizontal_thrust > thrust_total) {
-// 		horizontal_thrust = thrust_total;
-
-// 	} else if (horizontal_thrust < -thrust_total) {
-// 		horizontal_thrust = -thrust_total;
-// 	}
-
-
-
-// 	//TODO: maybe we want to add a speed controller later...
-
-// 	/* Calclulate thrust in east and north direction */
-// 	float thrust_north = cosf(bearing) * horizontal_thrust;
-// 	float thrust_east = sinf(bearing) * horizontal_thrust;
-
-// 	if (counter % 10 == 0) {
-// 		printf("thrust north: %.4f\n", thrust_north);
-// 		printf("thrust east: %.4f\n", thrust_east);
-// 		fflush(stdout);
-// 	}
-
-// 	/* Get current attitude */
-// 	if (0 == global_data_trylock(&global_data_attitude->access_conf)) {
-// 		pitch_current = global_data_attitude->pitch;
-// 		global_data_unlock(&global_data_attitude->access_conf);
-// 	}
-
-// 	/* Get desired pitch & roll */
-// 	float pitch_desired = 0.0f;
-// 	float roll_desired = 0.0f;
-
-// 	if (thrust_total != 0) {
-// 		float pitch_fraction = -thrust_north / thrust_total;
-// 		float roll_fraction = thrust_east / (cosf(pitch_current) * thrust_total);
-
-// 		if (roll_fraction < -1) {
-// 			roll_fraction = -1;
-
-// 		} else if (roll_fraction > 1) {
-// 			roll_fraction = 1;
-// 		}
-
-// //		if(counter % 5 == 0)
-// //		{
-// //			printf("pitch_fraction: %.4f, roll_fraction: %.4f\n",pitch_fraction, roll_fraction);
-// //			fflush(stdout);
-// //		}
-
-// 		pitch_desired = asinf(pitch_fraction);
-// 		roll_desired = asinf(roll_fraction);
-// 	}
-
-// 	att_sp.roll = roll_desired;
-// 	att_sp.pitch = pitch_desired;
-
-// 	counter++;
-// }
diff --git a/apps/multirotor_pos_control/position_control.h b/apps/multirotor_pos_control/position_control.h
deleted file mode 100644
index 2144ebc34..000000000
--- a/apps/multirotor_pos_control/position_control.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2008-2012 PX4 Development Team. All rights reserved.
- *   Author: @author Lorenz Meier <lm@inf.ethz.ch>
- *           @author Laurens Mackay <mackayl@student.ethz.ch>
- *           @author Tobias Naegeli <naegelit@student.ethz.ch>
- *           @author Martin Rutschmann <rutmarti@student.ethz.ch>
- *
- * 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 multirotor_position_control.h
- * Definition of the position control for a multirotor VTOL
- */
-
-// #ifndef POSITION_CONTROL_H_
-// #define POSITION_CONTROL_H_
-
-// void control_multirotor_position(const struct vehicle_state_s *vstatus, const struct vehicle_manual_control_s *manual,
-//  const struct vehicle_attitude_s *att, const struct vehicle_local_position_s *local_pos,
-//  const struct vehicle_local_position_setpoint_s *local_pos_sp, struct vehicle_attitude_setpoint_s *att_sp);
-
-// #endif /* POSITION_CONTROL_H_ */
diff --git a/apps/position_estimator/.context b/apps/position_estimator/.context
deleted file mode 100644
index e69de29bb..000000000
--- a/apps/position_estimator/.context
+++ /dev/null
diff --git a/apps/position_estimator/Makefile b/apps/position_estimator/Makefile
deleted file mode 100644
index cc5072152..000000000
--- a/apps/position_estimator/Makefile
+++ /dev/null
@@ -1,44 +0,0 @@
-############################################################################
-#
-#   Copyright (C) 2012 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.
-#
-############################################################################
-
-#
-# Makefile to build the position estimator
-#
-
-APPNAME		 = position_estimator
-PRIORITY	 = SCHED_PRIORITY_DEFAULT
-STACKSIZE	 = 4096
-
-CSRCS		 = position_estimator_main.c
-
-include $(APPDIR)/mk/app.mk
diff --git a/apps/position_estimator/position_estimator_main.c b/apps/position_estimator/position_estimator_main.c
deleted file mode 100644
index e84945299..000000000
--- a/apps/position_estimator/position_estimator_main.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/****************************************************************************
- *
- *   Copyright (C) 2008-2012 PX4 Development Team. All rights reserved.
- *   Author: Tobias Naegeli <naegelit@student.ethz.ch>
- *			 Thomas Gubler <thomasgubler@student.ethz.ch>
- *           Julian Oes <joes@student.ethz.ch>
- *           Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 position_estimator_main.c
- * Model-identification based position estimator for multirotors
- */
-
-#include <nuttx/config.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdbool.h>
-#include <fcntl.h>
-#include <float.h>
-#include <nuttx/sched.h>
-#include <sys/prctl.h>
-#include <termios.h>
-#include <errno.h>
-#include <limits.h>
-#include <math.h>
-#include <uORB/uORB.h>
-#include <uORB/topics/vehicle_status.h>
-#include <uORB/topics/vehicle_attitude.h>
-#include <uORB/topics/vehicle_gps_position.h>
-#include <uORB/topics/vehicle_global_position.h>
-#include <uORB/topics/vehicle_local_position.h>
-#include <poll.h>
-
-#define N_STATES 6
-#define ERROR_COVARIANCE_INIT 3
-#define R_EARTH 6371000.0
-
-#define PROJECTION_INITIALIZE_COUNTER_LIMIT 5000
-#define REPROJECTION_COUNTER_LIMIT 125
-
-__EXPORT int position_estimator_main(int argc, char *argv[]);
-
-static uint16_t position_estimator_counter_position_information;
-
-/* values for map projection */
-static double phi_1;
-static double sin_phi_1;
-static double cos_phi_1;
-static double lambda_0;
-static double scale;
-
-/**
- * Initializes the map transformation.
- *
- * Initializes the transformation between the geographic coordinate system and the azimuthal equidistant plane
- * @param lat in degrees (47.1234567°, not 471234567°)
- * @param lon in degrees (8.1234567°, not 81234567°)
- */
-static void map_projection_init(double lat_0, double lon_0) //lat_0, lon_0 are expected to be in correct format: -> 47.1234567 and not 471234567
-{
-	/* notation and formulas according to: http://mathworld.wolfram.com/AzimuthalEquidistantProjection.html */
-	phi_1 = lat_0 / 180.0 * M_PI;
-	lambda_0 = lon_0 / 180.0 * M_PI;
-
-	sin_phi_1 = sin(phi_1);
-	cos_phi_1 = cos(phi_1);
-
-	/* calculate local scale by using the relation of true distance and the distance on plane */ //TODO: this is a quick solution, there are probably easier ways to determine the scale
-
-	/* 1) calculate true distance d on sphere to a point: http://www.movable-type.co.uk/scripts/latlong.html */
-	const double r_earth = 6371000;
-
-	double lat1 = phi_1;
-	double lon1 = lambda_0;
-
-	double lat2 = phi_1 + 0.5 / 180 * M_PI;
-	double lon2 = lambda_0 + 0.5 / 180 * M_PI;
-	double sin_lat_2 = sin(lat2);
-	double cos_lat_2 = cos(lat2);
-	double d = acos(sin(lat1) * sin_lat_2 + cos(lat1) * cos_lat_2 * cos(lon2 - lon1)) * r_earth;
-
-	/* 2) calculate distance rho on plane */
-	double k_bar = 0;
-	double c =  acos(sin_phi_1 * sin_lat_2 + cos_phi_1 * cos_lat_2 * cos(lon2 - lambda_0));
-
-	if (0 != c)
-		k_bar = c / sin(c);
-
-	double x2 = k_bar * (cos_lat_2 * sin(lon2 - lambda_0)); //Projection of point 2 on plane
-	double y2 = k_bar * ((cos_phi_1 * sin_lat_2 - sin_phi_1 * cos_lat_2 * cos(lon2 - lambda_0)));
-	double rho = sqrt(pow(x2, 2) + pow(y2, 2));
-
-	scale = d / rho;
-
-}
-
-/**
- * Transforms a point in the geographic coordinate system to the local azimuthal equidistant plane
- * @param x north
- * @param y east
- * @param lat in degrees (47.1234567°, not 471234567°)
- * @param lon in degrees (8.1234567°, not 81234567°)
- */
-static void map_projection_project(double lat, double lon, float *x, float *y)
-{
-	/* notation and formulas accoring to: http://mathworld.wolfram.com/AzimuthalEquidistantProjection.html */
-	double phi = lat / 180.0 * M_PI;
-	double lambda = lon / 180.0 * M_PI;
-
-	double sin_phi = sin(phi);
-	double cos_phi = cos(phi);
-
-	double k_bar = 0;
-	/* using small angle approximation (formula in comment is without aproximation) */
-	double c =  acos(sin_phi_1 * sin_phi + cos_phi_1 * cos_phi * (1 - pow((lambda - lambda_0), 2) / 2)); //double c =  acos( sin_phi_1 * sin_phi + cos_phi_1 * cos_phi * cos(lambda - lambda_0) );
-
-	if (0 != c)
-		k_bar = c / sin(c);
-
-	/* using small angle approximation (formula in comment is without aproximation) */
-	*y = k_bar * (cos_phi * (lambda - lambda_0)) * scale;//*y = k_bar * (cos_phi * sin(lambda - lambda_0)) * scale;
-	*x = k_bar * ((cos_phi_1 * sin_phi - sin_phi_1 * cos_phi * (1 - pow((lambda - lambda_0), 2) / 2))) * scale; //	*x = k_bar * ((cos_phi_1 * sin_phi - sin_phi_1 * cos_phi * cos(lambda - lambda_0))) * scale;
-
-//	printf("%phi_1=%.10f, lambda_0 =%.10f\n", phi_1, lambda_0);
-}
-
-/**
- * Transforms a point in the local azimuthal equidistant plane to the geographic coordinate system
- *
- * @param x north
- * @param y east
- * @param lat in degrees (47.1234567°, not 471234567°)
- * @param lon in degrees (8.1234567°, not 81234567°)
- */
-static void map_projection_reproject(float x, float y, double *lat, double *lon)
-{
-	/* notation and formulas accoring to: http://mathworld.wolfram.com/AzimuthalEquidistantProjection.html */
-
-	double x_descaled = x / scale;
-	double y_descaled = y / scale;
-
-	double c = sqrt(pow(x_descaled, 2) + pow(y_descaled, 2));
-	double sin_c = sin(c);
-	double cos_c = cos(c);
-
-	double lat_sphere = 0;
-
-	if (c != 0)
-		lat_sphere = asin(cos_c * sin_phi_1 + (x_descaled * sin_c * cos_phi_1) / c);
-	else
-		lat_sphere = asin(cos_c * sin_phi_1);
-
-//	printf("lat_sphere = %.10f\n",lat_sphere);
-
-	double lon_sphere = 0;
-
-	if (phi_1  == M_PI / 2) {
-		//using small angle approximation (formula in comment is without aproximation)
-		lon_sphere = (lambda_0 - y_descaled / x_descaled); //lon_sphere = (lambda_0 + atan2(-y_descaled, x_descaled));
-
-	} else if (phi_1 == -M_PI / 2) {
-		//using small angle approximation (formula in comment is without aproximation)
-		lon_sphere = (lambda_0 + y_descaled / x_descaled); //lon_sphere = (lambda_0 + atan2(y_descaled, x_descaled));
-
-	} else {
-
-		lon_sphere = (lambda_0 + atan2(y_descaled * sin_c , c * cos_phi_1 * cos_c - x_descaled * sin_phi_1 * sin_c));
-		//using small angle approximation
-//    	double denominator = (c * cos_phi_1 * cos_c - x_descaled * sin_phi_1 * sin_c);
-//    	if(denominator != 0)
-//    	{
-//    		lon_sphere = (lambda_0 + (y_descaled * sin_c) / denominator);
-//    	}
-//    	else
-//    	{
-//    	...
-//    	}
-	}
-
-//	printf("lon_sphere = %.10f\n",lon_sphere);
-
-	*lat = lat_sphere * 180.0 / M_PI;
-	*lon = lon_sphere * 180.0 / M_PI;
-
-}
-
-/****************************************************************************
- * main
- ****************************************************************************/
-
-int position_estimator_main(int argc, char *argv[])
-{
-
-	/* welcome user */
-	printf("[multirotor position_estimator] started\n");
-
-	/* initialize values */
-	static float u[2] = {0, 0};
-	static float z[3] = {0, 0, 0};
-	static float xapo[N_STATES] = {0, 0, 0, 0, 0, 0};
-	static float Papo[N_STATES * N_STATES] = {ERROR_COVARIANCE_INIT, 0, 0, 0, 0, 0,
-			ERROR_COVARIANCE_INIT, 0, 0, 0, 0, 0,
-			ERROR_COVARIANCE_INIT, 0, 0, 0, 0, 0,
-			ERROR_COVARIANCE_INIT, 0, 0, 0, 0, 0,
-			ERROR_COVARIANCE_INIT, 0, 0, 0, 0, 0,
-			ERROR_COVARIANCE_INIT, 0, 0, 0, 0, 0
-						 };
-
-	static float xapo1[N_STATES];
-	static float Papo1[36];
-
-	static float gps_covariance[3] = {0.0f, 0.0f, 0.0f};
-
-	static uint16_t counter = 0;
-	position_estimator_counter_position_information = 0;
-
-	uint8_t predict_only = 1;
-
-	bool gps_valid = false;
-
-	bool new_initialization = true;
-
-	static double lat_current = 0.0d;//[°]] --> 47.0
-	static double lon_current = 0.0d; //[°]] -->8.5
-	float alt_current = 0.0f;
-
-
-	//TODO: handle flight without gps but with estimator
-
-	/* subscribe to vehicle status, attitude, gps */
-	struct vehicle_gps_position_s gps;
-	gps.fix_type = 0;
-	struct vehicle_status_s vstatus;
-	struct vehicle_attitude_s att;
-
-	int vehicle_gps_sub = orb_subscribe(ORB_ID(vehicle_gps_position));
-	int vehicle_status_sub = orb_subscribe(ORB_ID(vehicle_status));
-
-	/* subscribe to attitude at 100 Hz */
-	int vehicle_attitude_sub = orb_subscribe(ORB_ID(vehicle_attitude));
-
-	/* wait until gps signal turns valid, only then can we initialize the projection */
-	while (gps.fix_type < 3) {
-		struct pollfd fds[1] = { {.fd = vehicle_gps_sub, .events = POLLIN} };
-
-		/* wait for GPS updates, BUT READ VEHICLE STATUS (!)
-		 * this choice is critical, since the vehicle status might not
-		 * actually change, if this app is started after GPS lock was
-		 * aquired.
-		 */
-		if (poll(fds, 1, 5000)) {
-			/* Wait for the GPS update to propagate (we have some time) */
-			usleep(5000);
-			/* Read wether the vehicle status changed */
-			orb_copy(ORB_ID(vehicle_gps_position), vehicle_gps_sub, &gps);
-			gps_valid = (gps.fix_type > 2);
-		}
-	}
-
-	/* get gps value for first initialization */
-	orb_copy(ORB_ID(vehicle_gps_position), vehicle_gps_sub, &gps);
-	lat_current = ((double)(gps.lat)) * 1e-7;
-	lon_current = ((double)(gps.lon)) * 1e-7;
-	alt_current = gps.alt * 1e-3;
-
-	/* initialize coordinates */
-	map_projection_init(lat_current, lon_current);
-
-	/* publish global position messages only after first GPS message */
-	struct vehicle_local_position_s local_pos = {
-		.x = 0,
-		.y = 0,
-		.z = 0
-	};
-	orb_advert_t local_pos_pub = orb_advertise(ORB_ID(vehicle_local_position), &local_pos);
-
-	printf("[multirotor position estimator] initialized projection with: lat: %.10f,  lon:%.10f\n", lat_current, lon_current);
-
-	while (1) {
-
-		/*This runs at the rate of the sensors, if we have also a new gps update this is used in the position_estimator function */
-		struct pollfd fds[1] = { {.fd = vehicle_attitude_sub, .events = POLLIN} };
-
-		if (poll(fds, 1, 5000) <= 0) {
-			/* error / timeout */
-		} else {
-
-			orb_copy(ORB_ID(vehicle_attitude), vehicle_attitude_sub, &att);
-			/* got attitude, updating pos as well */
-			orb_copy(ORB_ID(vehicle_gps_position), vehicle_gps_sub, &gps);
-			orb_copy(ORB_ID(vehicle_status), vehicle_status_sub, &vstatus);
-
-			/*copy attitude */
-			u[0] = att.roll;
-			u[1] = att.pitch;
-
-			/* initialize map projection with the last estimate (not at full rate) */
-			if (gps.fix_type > 2) {
-				/* Project gps lat lon (Geographic coordinate system) to plane*/
-				map_projection_project(((double)(gps.lat)) * 1e-7, ((double)(gps.lon)) * 1e-7, &(z[0]), &(z[1]));
-
-				local_pos.x = z[0];
-				local_pos.y = z[1];
-				/* negative offset from initialization altitude */
-				local_pos.z = alt_current - (gps.alt) * 1e-3;
-
-
-				orb_publish(ORB_ID(vehicle_local_position), local_pos_pub, &local_pos);
-			}
-
-
-			// 	gps_covariance[0] = gps.eph; //TODO: needs scaling
-			// 	gps_covariance[1] = gps.eph;
-			// 	gps_covariance[2] = gps.epv;
-
-			// } else {
-			// 	/* we can not use the gps signal (it is of low quality) */
-			// 	predict_only = 1;
-			// }
-
-			// //		predict_only = 0;																//TODO: only for testing, removeme, XXX
-			// //		z[0] = sinf(((float)counter)/180.0f*3.14159265f);								//TODO: only for testing, removeme, XXX
-			// //		usleep(100000);																	//TODO: only for testing, removeme, XXX
-
-
-			// /*Get new estimation (this is calculated in the plane) */
-			// //TODO: if new_initialization == true: use 0,0,0, else use xapo
-			// if (true == new_initialization) {																								//TODO,XXX: uncomment!
-			// 	xapo[0] = 0; //we have a new plane initialization. the current estimate is in the center of the plane
-			// 	xapo[2] = 0;
-			// 	xapo[4] = 0;
-			// 	position_estimator(u, z, xapo, Papo, gps_covariance, predict_only, xapo1, Papo1);
-
-			// } else {
-			// 	position_estimator(u, z, xapo, Papo, gps_covariance, predict_only, xapo1, Papo1);
-			// }
-
-
-
-			// /* Copy values from xapo1 to xapo */
-			// int i;
-
-			// for (i = 0; i < N_STATES; i++) {
-			// 	xapo[i] = xapo1[i];
-			// }
-
-			// if ((counter % REPROJECTION_COUNTER_LIMIT == 0) || (counter % (PROJECTION_INITIALIZE_COUNTER_LIMIT - 1) == 0)) {
-			// 	/* Reproject from plane to geographic coordinate system */
-			// 	//		map_projection_reproject(xapo1[0], xapo1[2], map_scale, phi_1, lambda_0, &lat_current, &lon_current) //TODO,XXX: uncomment!
-			// 	map_projection_reproject(z[0], z[1], &lat_current, &lon_current); //do not use estimator for projection testing, removeme
-			// 	//		//DEBUG
-			// 	//			if(counter%500 == 0)
-			// 	//			{
-			// 	//				printf("phi_1: %.10f\n", phi_1);
-			// 	//				printf("lambda_0: %.10f\n", lambda_0);
-			// 	//				printf("lat_estimated: %.10f\n", lat_current);
-			// 	//				printf("lon_estimated: %.10f\n", lon_current);
-			// 	//				printf("z[0]=%.10f, z[1]=%.10f, z[2]=%f\n", z[0], z[1], z[2]);
-			// 	//				fflush(stdout);
-			// 	//
-			// 	//			}
-
-			// 	//			if(!isnan(lat_current) && !isnan(lon_current))// && !isnan(xapo1[4]) && !isnan(xapo1[1]) && !isnan(xapo1[3]) && !isnan(xapo1[5]))
-			// 	//			{
-			// 	/* send out */
-
-			// 	global_pos.lat = lat_current;
-			// 	global_pos.lon = lon_current;
-			// 	global_pos.alt = xapo1[4];
-			// 	global_pos.vx = xapo1[1];
-			// 	global_pos.vy = xapo1[3];
-			// 	global_pos.vz = xapo1[5];
-
-				/* publish current estimate */
-				// orb_publish(ORB_ID(vehicle_global_position), global_pos_pub, &global_pos);
-				//			}
-				//			else
-				//			{
-				//				printf("[position estimator] ERROR: nan values, lat_current=%.4f, lon_current=%.4f, z[0]=%.4f z[1]=%.4f\n", lat_current, lon_current, z[0], z[1]);
-				//				fflush(stdout);
-				//			}
-
-			// }
-
-			counter++;
-		}
-
-	}
-
-	return 0;
-}
-
-