Files
PX4-Autopilot/src/modules/events/rc_loss_alarm.cpp
T
Daniel Agar 08bf71b73d drivers/tone_alarm and tune_control small improvements/cleanup
- drivers/tone_alarm: move to ModuleBase and purge CDev (/dev/tone_alarm0)
 - drivers/tone_alarm: only run on tune_control publication (or scheduled note) rather than continuously
 - drivers/tone_alarm: use HRT to schedule tone stop (prevents potential disruption)
 - msg/tune_control: add tune_id numbering
 - systemcmds/tune_control: add "error" special case tune_id
 - move all tune_control publication to new uORB::PublicationQueued<>
 - start tone_alarm immediately after board defaults are loaded to fix potential startup issues
 - for SITL (or other boards with no TONE output) print common messages (startup, error, etc)
2020-10-05 21:39:26 -04:00

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3.0 KiB
C++

/****************************************************************************
*
* Copyright (c) 2018 PX4 Development Team. All rights reserved.
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* used to endorse or promote products derived from this software
* without specific prior written permission.
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/**
* @file rc_loss_alarm.cpp
*
*/
#include "rc_loss_alarm.h"
#include <px4_platform_common/defines.h>
#include <drivers/drv_hrt.h>
#include <stdint.h>
#include <tunes/tune_definition.h>
namespace events
{
namespace rc_loss
{
void RC_Loss_Alarm::process()
{
vehicle_status_s status{};
if (!_vehicle_status_sub.update(&status)) {
return;
}
if (!_was_armed &&
status.arming_state == vehicle_status_s::ARMING_STATE_ARMED) {
_was_armed = true; // Once true, impossible to go back to false
}
if (!_had_rc && !status.rc_signal_lost) {
_had_rc = true;
}
if (_was_armed && _had_rc && status.rc_signal_lost &&
status.arming_state != vehicle_status_s::ARMING_STATE_ARMED) {
play_tune();
_alarm_playing = true;
} else if (_alarm_playing) {
stop_tune();
_alarm_playing = false;
}
}
void RC_Loss_Alarm::play_tune()
{
tune_control_s tune_control{};
tune_control.tune_id = tune_control_s::TUNE_ID_ERROR;
tune_control.tune_override = true;
tune_control.volume = tune_control_s::VOLUME_LEVEL_MAX;
tune_control.timestamp = hrt_absolute_time();
_tune_control_pub.publish(tune_control);
}
void RC_Loss_Alarm::stop_tune()
{
tune_control_s tune_control{};
tune_control.tune_override = true;
tune_control.timestamp = hrt_absolute_time();
_tune_control_pub.publish(tune_control);
}
} /* namespace rc_loss */
} /* namespace events */