Files
PX4-Autopilot/src/modules/events/send_event.h
T
2017-01-29 15:10:09 +01:00

76 lines
2.7 KiB
C++

/****************************************************************************
*
* Copyright (c) 2017 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.
*
****************************************************************************/
#pragma once
#include <px4_workqueue.h>
#include <uORB/topics/vehicle_command.h>
#include <uORB/topics/vehicle_command_ack.h>
extern "C" __EXPORT int send_event_main(int argc, char *argv[]);
class SendEvent
{
public:
/** Start background listening for commands
*
* @return 0 if successfull, -1 on error. */
int start();
/** Stop background listener */
void stop();
bool is_running() { return _task_is_running; }
void print_status();
private:
/** Trampoline for the work queue. */
static void cycle_trampoline(void *arg);
/** call process_commands() and schedule the next cycle. */
void cycle();
/** check for new commands and process them. */
void process_commands();
/** return an ACK to a vehicle_command */
void answer_command(const vehicle_command_s &cmd, unsigned result);
volatile bool _task_should_exit = false;
volatile bool _task_is_running = false;
struct work_s _work = {};
int _vehicle_command_sub = -1;
orb_advert_t _command_ack_pub = nullptr;
};