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+/****************************************************************************
+ *
+ * Copyright (C) 2014 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * @file subscriber_start_nuttx.cpp
+ *
+ * @author Thomas Gubler <thomasgubler@gmail.com>
+ */
+#include <string.h>
+#include <cstdlib>
+#include <systemlib/err.h>
+#include <systemlib/systemlib.h>
+
+extern bool thread_running;
+int daemon_task; /**< Handle of deamon task / thread */
+namespace px4
+{
+bool task_should_exit = false;
+}
+using namespace px4;
+
+extern int main(int argc, char **argv);
+
+extern "C" __EXPORT int subscriber_main(int argc, char *argv[]);
+int subscriber_main(int argc, char *argv[])
+{
+ if (argc < 1) {
+ errx(1, "usage: subscriber {start|stop|status}");
+ }
+
+ if (!strcmp(argv[1], "start")) {
+
+ if (thread_running) {
+ warnx("already running");
+ /* this is not an error */
+ exit(0);
+ }
+
+ task_should_exit = false;
+
+ daemon_task = task_spawn_cmd("subscriber",
+ SCHED_DEFAULT,
+ SCHED_PRIORITY_MAX - 5,
+ 2000,
+ main,
+ (argv) ? (char* const*)&argv[2] : (char* const*)NULL);
+
+ exit(0);
+ }
+
+ if (!strcmp(argv[1], "stop")) {
+ task_should_exit = true;
+ exit(0);
+ }
+
+ if (!strcmp(argv[1], "status")) {
+ if (thread_running) {
+ warnx("is running");
+
+ } else {
+ warnx("not started");
+ }
+
+ exit(0);
+ }
+
+ warnx("unrecognized command");
+ return 1;
+}