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LibrePilot/flight/pios/common/pios_notify.c

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/**
******************************************************************************
*
* @file pios_notify.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
* @brief Handles user notifications.
* --
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "pios_notify.h"
static volatile pios_notify_notification currentNotification = NOTIFY_NONE;
static volatile pios_notify_priority currentPriority;
static volatile ExtLedNotification_t extLedNotification;
static volatile bool newNotification;
void PIOS_NOTIFY_StartNotification(pios_notify_notification notification, pios_notify_priority priority)
{
if (currentNotification == NOTIFY_NONE || currentPriority < priority) {
currentPriority = priority;
currentNotification = notification;
}
}
pios_notify_notification PIOS_NOTIFY_GetActiveNotification(bool clear)
{
pios_notify_notification ret = currentNotification;
if (clear && ret != NOTIFY_NONE) {
currentNotification = NOTIFY_NONE;
}
return ret;
}
/*
* Play a sequence on the default external led. Sequences with priority higher than NOTIFY_PRIORITY_LOW
* are repeated only once if repeat = -1
* @param sequence Sequence to be played
* @param priority Priority of the sequence being played
*/
void PIOS_NOTIFICATION_Default_Ext_Led_Play(const LedSequence_t *sequence, pios_notify_priority priority)
{
// alert and alarms are repeated if condition persists. bacground notification instead are set once, so try to prevent loosing any update
if (newNotification && priority != NOTIFY_PRIORITY_BACKGROUND) {
// prevent overwriting higher priority or background notifications
if (extLedNotification.priority == NOTIFY_PRIORITY_BACKGROUND || extLedNotification.priority > priority) {
return;
}
}
extLedNotification.priority = priority;
extLedNotification.sequence = *sequence;
newNotification = true;
}
ExtLedNotification_t *PIOS_NOTIFY_GetNewExtLedSequence(bool clear)
{
if (!newNotification) {
return 0;
}
if (clear) {
newNotification = false;
}
return (ExtLedNotification_t *)&extLedNotification;
}