android/src/GlueBMP085.java

   1 /*
   2   Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21   }
  22 */
  23
  24 package org.xcsoar;
  25
  26 import ioio.lib.api.IOIO;
  27 import ioio.lib.api.exception.ConnectionLostException;
  28
  29 /**
  30  * A driver for the BMP085 pressure sensor, connected via IOIO.
  31  */
  32 final class GlueBMP085 implements IOIOConnectionListener {
  33   private IOIOConnectionHolder holder;
  34   private final int twiNum, eocPin, oversampling;
  35   private final BMP085.Listener listener;
  36
  37   private BMP085 instance;
  38
  39   GlueBMP085(IOIOConnectionHolder _holder,
  40              int _twiNum, int _eocPin, int _oversampling,
  41              BMP085.Listener _listener) {
  42     twiNum = _twiNum;
  43     eocPin = _eocPin;
  44     oversampling = _oversampling;
  45     listener = _listener;
  46
  47     holder = _holder;
  48     _holder.addListener(this);
  49   }
  50
  51   public void close() {
  52     IOIOConnectionHolder holder;
  53     synchronized(this) {
  54       holder = this.holder;
  55       this.holder = null;
  56     }
  57
  58     if (holder != null)
  59       holder.removeListener(this);
  60   }
  61
  62   @Override public void onIOIOConnect(IOIO ioio)
  63     throws ConnectionLostException, InterruptedException {
  64     instance = new BMP085(ioio, twiNum, eocPin, oversampling, listener);
  65   }
  66
  67   @Override public void onIOIODisconnect() {
  68     if (instance == null)
  69       return;
  70
  71     instance.close();
  72     instance = null;
  73   }
  74 }