flight/modules/Airspeed/airspeedalarm.c

   1 /**
   2  ******************************************************************************
   3  * @addtogroup OpenPilotModules OpenPilot Modules
   4  * @{
   5  * @addtogroup AirspeedModule Airspeed Module
   6  * @brief Handle locally airspeed alarms issue changes to PIOS only when necessary
   7  * @{
   8  *
   9  * @file       airspeedalarm.c
  10  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
  11  * @brief      Airspeed module
  12  *
  13  * @see        The GNU Public License (GPL) Version 3
  14  *
  15  *****************************************************************************/
  16 /*
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 3 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful, but
  23  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  24  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  25  * for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License along
  28  * with this program; if not, write to the Free Software Foundation, Inc.,
  29  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  30  */
  31
  32 /**
  33  * Output object: none
  34  *
  35  * Handle locally airspeed alarms issue changes to PIOS only when necessary
  36  *
  37  */
  38
  39 #include "airspeedalarm.h"
  40
  41 // local variable
  42
  43 static SystemAlarmsAlarmOptions severitySet = SYSTEMALARMS_ALARM_UNINITIALISED;
  44
  45 // functions
  46
  47 /**
  48  * Handle airspeed alarms and isuue an Alarm to PIOS only if necessary
  49  */
  50 bool AirspeedAlarm(SystemAlarmsAlarmOptions severity)
  51 {
  52     if (severity == severitySet) {
  53         return false;
  54     }
  55
  56     severitySet = severity;
  57
  58     return AlarmsSet(SYSTEMALARMS_ALARM_AIRSPEED, severity) == 0;
  59 }
  60
  61
  62 /**
  63  * @}
  64  * @}
  65  */