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author | Anton Babushkin <anton.babushkin@me.com> | 2013-08-15 10:33:45 +0200 |
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committer | Anton Babushkin <anton.babushkin@me.com> | 2013-08-15 10:33:45 +0200 |
commit | 7476b03543f879df5ea29d44be147ff4926f8216 (patch) | |
tree | e1c056fa3e12b2c2c3ae601ae2835ac086b60338 /src/modules/segway/segway_main.cpp | |
parent | 39ae01dd07d53e3509826ae3737fc6a509adec34 (diff) | |
parent | d2f19c7d84030ad6ed1f6c17538fa96864c5dcef (diff) | |
download | px4-firmware-7476b03543f879df5ea29d44be147ff4926f8216.tar.gz px4-firmware-7476b03543f879df5ea29d44be147ff4926f8216.tar.bz2 px4-firmware-7476b03543f879df5ea29d44be147ff4926f8216.zip |
Merge branch 'master' into new_state_machine_drton
Diffstat (limited to 'src/modules/segway/segway_main.cpp')
-rw-r--r-- | src/modules/segway/segway_main.cpp | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/modules/segway/segway_main.cpp b/src/modules/segway/segway_main.cpp new file mode 100644 index 000000000..061fbf9b9 --- /dev/null +++ b/src/modules/segway/segway_main.cpp @@ -0,0 +1,157 @@ +/**************************************************************************** + * + * Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved. + * Author: James Goppert + * + * 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 segway_main.cpp + * @author James Goppert + * + * Segway controller using control library + */ + +#include <nuttx/config.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <systemlib/systemlib.h> +#include <systemlib/param/param.h> +#include <systemlib/err.h> +#include <drivers/drv_hrt.h> +#include <math.h> + +#include "BlockSegwayController.hpp" + +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 */ + +/** + * Deamon management function. + */ +extern "C" __EXPORT int segway_main(int argc, char *argv[]); + +/** + * Mainloop of deamon. + */ +int segway_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: segway {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_create(). + */ +int segway_main(int argc, char *argv[]) +{ + + if (argc < 1) + usage("missing command"); + + if (!strcmp(argv[1], "start")) { + + if (thread_running) { + warnx("already running"); + /* this is not an error */ + exit(0); + } + + thread_should_exit = false; + + deamon_task = task_spawn_cmd("segway", + SCHED_DEFAULT, + SCHED_PRIORITY_MAX - 10, + 5120, + segway_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) { + warnx("is running"); + + } else { + warnx("not started"); + } + + exit(0); + } + + usage("unrecognized command"); + exit(1); +} + +int segway_thread_main(int argc, char *argv[]) +{ + + warnx("starting"); + + using namespace control; + + BlockSegwayController autopilot; + + thread_running = true; + + while (!thread_should_exit) { + autopilot.update(); + } + + warnx("exiting."); + + thread_running = false; + + return 0; +} |