ToneAlarm.h
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/****************************************************************************
*
* Copyright (C) 2018-2019 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 ToneAlarm.h
*
* Low Level Driver for the PX4 audio alarm port. Subscribes to
* tune_control and plays notes on this architecture specific timer HW.
*/
#pragma once
#include <px4_platform_common/px4_config.h>
#include <px4_platform_common/getopt.h>
#include <px4_platform_common/log.h>
#include <px4_platform_common/module.h>
#include <px4_platform_common/px4_work_queue/ScheduledWorkItem.hpp>
#include <lib/circuit_breaker/circuit_breaker.h>
#include <lib/tunes/tunes.h>
#include <uORB/Subscription.hpp>
#include <uORB/SubscriptionCallback.hpp>
#include <uORB/topics/tune_control.h>
#include <drivers/drv_tone_alarm.h>
#include <string.h>
class ToneAlarm : public ModuleBase<ToneAlarm>, public px4::ScheduledWorkItem
{
public:
ToneAlarm();
~ToneAlarm() override;
/** @see ModuleBase */
static int task_spawn(int argc, char *argv[]);
/** @see ModuleBase */
static int custom_command(int argc, char *argv[]) { return 0; };
/** @see ModuleBase */
static int print_usage(const char *reason = nullptr);
private:
static void InterruptStopNote(void *arg);
bool Init();
void Run() override;
hrt_call _hrt_call{};
Tunes _tunes;
hrt_abstime _next_note_time{0};
uORB::SubscriptionCallbackWorkItem _tune_control_sub{this, ORB_ID(tune_control)};
bool _circuit_break_initialized{false};
bool _play_tone{false};
};