From 988bf1eb0a3d36532883734a416f9c9e1e6ba125 Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Sat, 27 Apr 2013 14:28:47 +0200 Subject: Moved all fixed wing controllers to new world --- .../fixedwing_att_control_main.c | 370 +++++++++++++++++++++ 1 file changed, 370 insertions(+) create mode 100644 src/modules/fixedwing_att_control/fixedwing_att_control_main.c (limited to 'src/modules/fixedwing_att_control/fixedwing_att_control_main.c') diff --git a/src/modules/fixedwing_att_control/fixedwing_att_control_main.c b/src/modules/fixedwing_att_control/fixedwing_att_control_main.c new file mode 100644 index 000000000..58477632b --- /dev/null +++ b/src/modules/fixedwing_att_control/fixedwing_att_control_main.c @@ -0,0 +1,370 @@ +/**************************************************************************** + * + * Copyright (C) 2012 PX4 Development Team. All rights reserved. + * Author: @author Thomas Gubler + * @author Doug Weibel + * + * 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 fixedwing_att_control.c + * Implementation of a fixed wing attitude controller. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "fixedwing_att_control_rate.h" +#include "fixedwing_att_control_att.h" + +/* Prototypes */ +/** + * Deamon management function. + */ +__EXPORT int fixedwing_att_control_main(int argc, char *argv[]); + +/** + * Mainloop of deamon. + */ +int fixedwing_att_control_thread_main(int argc, char *argv[]); + +/** + * Print the correct usage. + */ +static void usage(const char *reason); + +/* Variables */ +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 */ + +/* Main Thread */ +int fixedwing_att_control_thread_main(int argc, char *argv[]) +{ + /* read arguments */ + bool verbose = false; + + for (int i = 1; i < argc; i++) { + if (strcmp(argv[i], "-v") == 0 || strcmp(argv[i], "--verbose") == 0) { + verbose = true; + } + } + + /* welcome user */ + printf("[fixedwing att control] started\n"); + + /* declare and safely initialize all structs */ + 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 vehicle_rates_setpoint_s rates_sp; + memset(&rates_sp, 0, sizeof(rates_sp)); + struct vehicle_global_position_s global_pos; + memset(&global_pos, 0, sizeof(global_pos)); + struct manual_control_setpoint_s manual_sp; + memset(&manual_sp, 0, sizeof(manual_sp)); + struct vehicle_status_s vstatus; + memset(&vstatus, 0, sizeof(vstatus)); + + /* output structs */ + struct actuator_controls_s actuators; + memset(&actuators, 0, sizeof(actuators)); + + + /* publish actuator controls */ + for (unsigned i = 0; i < NUM_ACTUATOR_CONTROLS; i++) { + actuators.control[i] = 0.0f; + } + + orb_advert_t actuator_pub = orb_advertise(ORB_ID_VEHICLE_ATTITUDE_CONTROLS, &actuators); + orb_advert_t rates_pub = orb_advertise(ORB_ID(vehicle_rates_setpoint), &rates_sp); + + /* subscribe */ + int att_sub = orb_subscribe(ORB_ID(vehicle_attitude)); + int att_sp_sub = orb_subscribe(ORB_ID(vehicle_attitude_setpoint)); + int global_pos_sub = orb_subscribe(ORB_ID(vehicle_global_position)); + int manual_sp_sub = orb_subscribe(ORB_ID(manual_control_setpoint)); + int vstatus_sub = orb_subscribe(ORB_ID(vehicle_status)); + + /* Setup of loop */ + float gyro[3] = {0.0f, 0.0f, 0.0f}; + float speed_body[3] = {0.0f, 0.0f, 0.0f}; + struct pollfd fds = { .fd = att_sub, .events = POLLIN }; + + while (!thread_should_exit) { + /* wait for a sensor update, check for exit condition every 500 ms */ + poll(&fds, 1, 500); + + /* Check if there is a new position measurement or attitude setpoint */ + bool pos_updated; + orb_check(global_pos_sub, &pos_updated); + bool att_sp_updated; + orb_check(att_sp_sub, &att_sp_updated); + + /* get a local copy of attitude */ + orb_copy(ORB_ID(vehicle_attitude), att_sub, &att); + + if (att_sp_updated) + orb_copy(ORB_ID(vehicle_attitude_setpoint), att_sp_sub, &att_sp); + + if (pos_updated) { + orb_copy(ORB_ID(vehicle_global_position), global_pos_sub, &global_pos); + + if (att.R_valid) { + speed_body[0] = att.R[0][0] * global_pos.vx + att.R[0][1] * global_pos.vy + att.R[0][2] * global_pos.vz; + speed_body[1] = att.R[1][0] * global_pos.vx + att.R[1][1] * global_pos.vy + att.R[1][2] * global_pos.vz; + speed_body[2] = att.R[2][0] * global_pos.vx + att.R[2][1] * global_pos.vy + att.R[2][2] * global_pos.vz; + + } else { + speed_body[0] = 0; + speed_body[1] = 0; + speed_body[2] = 0; + + printf("FW ATT CONTROL: Did not get a valid R\n"); + } + } + + orb_copy(ORB_ID(manual_control_setpoint), manual_sp_sub, &manual_sp); + orb_copy(ORB_ID(vehicle_status), vstatus_sub, &vstatus); + + gyro[0] = att.rollspeed; + gyro[1] = att.pitchspeed; + gyro[2] = att.yawspeed; + + /* control */ + + if (vstatus.state_machine == SYSTEM_STATE_AUTO || + vstatus.state_machine == SYSTEM_STATE_STABILIZED) { + /* attitude control */ + fixedwing_att_control_attitude(&att_sp, &att, speed_body, &rates_sp); + + /* angular rate control */ + fixedwing_att_control_rates(&rates_sp, gyro, &actuators); + + /* pass through throttle */ + actuators.control[3] = att_sp.thrust; + + /* set flaps to zero */ + actuators.control[4] = 0.0f; + + } else if (vstatus.state_machine == SYSTEM_STATE_MANUAL) { + if (vstatus.manual_control_mode == VEHICLE_MANUAL_CONTROL_MODE_SAS) { + + /* if the RC signal is lost, try to stay level and go slowly back down to ground */ + if (vstatus.rc_signal_lost) { + + /* put plane into loiter */ + att_sp.roll_body = 0.3f; + att_sp.pitch_body = 0.0f; + + /* limit throttle to 60 % of last value if sane */ + if (isfinite(manual_sp.throttle) && + (manual_sp.throttle >= 0.0f) && + (manual_sp.throttle <= 1.0f)) { + att_sp.thrust = 0.6f * manual_sp.throttle; + + } else { + att_sp.thrust = 0.0f; + } + + att_sp.yaw_body = 0; + + // XXX disable yaw control, loiter + + } else { + + att_sp.roll_body = manual_sp.roll; + att_sp.pitch_body = manual_sp.pitch; + att_sp.yaw_body = 0; + att_sp.thrust = manual_sp.throttle; + } + + att_sp.timestamp = hrt_absolute_time(); + + /* attitude control */ + fixedwing_att_control_attitude(&att_sp, &att, speed_body, &rates_sp); + + /* angular rate control */ + fixedwing_att_control_rates(&rates_sp, gyro, &actuators); + + /* pass through throttle */ + actuators.control[3] = att_sp.thrust; + + /* pass through flaps */ + if (isfinite(manual_sp.flaps)) { + actuators.control[4] = manual_sp.flaps; + + } else { + actuators.control[4] = 0.0f; + } + + } else if (vstatus.manual_control_mode == VEHICLE_MANUAL_CONTROL_MODE_DIRECT) { + /* directly pass through values */ + actuators.control[0] = manual_sp.roll; + /* positive pitch means negative actuator -> pull up */ + actuators.control[1] = manual_sp.pitch; + actuators.control[2] = manual_sp.yaw; + actuators.control[3] = manual_sp.throttle; + + if (isfinite(manual_sp.flaps)) { + actuators.control[4] = manual_sp.flaps; + + } else { + actuators.control[4] = 0.0f; + } + } + } + + /* publish rates */ + orb_publish(ORB_ID(vehicle_rates_setpoint), rates_pub, &rates_sp); + + /* sanity check and publish actuator outputs */ + if (isfinite(actuators.control[0]) && + isfinite(actuators.control[1]) && + isfinite(actuators.control[2]) && + isfinite(actuators.control[3])) { + orb_publish(ORB_ID_VEHICLE_ATTITUDE_CONTROLS, actuator_pub, &actuators); + } + } + + printf("[fixedwing_att_control] exiting, stopping all motors.\n"); + thread_running = false; + + /* 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(actuator_pub); + close(rates_pub); + + fflush(stdout); + exit(0); + + return 0; + +} + +/* Startup Functions */ + +static void +usage(const char *reason) +{ + if (reason) + fprintf(stderr, "%s\n", reason); + + fprintf(stderr, "usage: fixedwing_att_control {start|stop|status}\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_create(). + */ +int fixedwing_att_control_main(int argc, char *argv[]) +{ + if (argc < 1) + usage("missing command"); + + if (!strcmp(argv[1], "start")) { + + if (thread_running) { + printf("fixedwing_att_control already running\n"); + /* this is not an error */ + exit(0); + } + + thread_should_exit = false; + deamon_task = task_spawn("fixedwing_att_control", + SCHED_DEFAULT, + SCHED_PRIORITY_MAX - 20, + 2048, + fixedwing_att_control_thread_main, + (argv) ? (const char **)&argv[2] : (const char **)NULL); + thread_running = true; + exit(0); + } + + if (!strcmp(argv[1], "stop")) { + thread_should_exit = true; + exit(0); + } + + if (!strcmp(argv[1], "status")) { + if (thread_running) { + printf("\tfixedwing_att_control is running\n"); + + } else { + printf("\tfixedwing_att_control not started\n"); + } + + exit(0); + } + + usage("unrecognized command"); + exit(1); +} + + + -- cgit v1.2.3