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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.gpio.internal.handler;
  14
  15 import static org.openhab.binding.gpio.internal.GPIOBindingConstants.*;
  16
  17 import java.util.HashMap;
  18 import java.util.Map;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.openhab.binding.gpio.internal.InvalidPullUpDownException;
  22 import org.openhab.binding.gpio.internal.NoGpioIdException;
  23 import org.openhab.binding.gpio.internal.configuration.GPIOInputConfiguration;
  24 import org.openhab.binding.gpio.internal.configuration.GPIOOutputConfiguration;
  25 import org.openhab.binding.gpio.internal.configuration.PigpioConfiguration;
  26 import org.openhab.core.thing.ChannelUID;
  27 import org.openhab.core.thing.Thing;
  28 import org.openhab.core.thing.ThingStatus;
  29 import org.openhab.core.thing.ThingStatusDetail;
  30 import org.openhab.core.thing.binding.BaseThingHandler;
  31 import org.openhab.core.thing.type.ChannelTypeUID;
  32 import org.openhab.core.types.Command;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 import eu.xeli.jpigpio.JPigpio;
  37 import eu.xeli.jpigpio.PigpioException;
  38 import eu.xeli.jpigpio.PigpioSocket;
  39
  40 /**
  41  * Remote pigpio Handler
  42  *
  43  * This bridge is used to control remote pigpio instances.
  44  *
  45  * @author Nils Bauer - Initial contribution
  46  * @author Jan N. Klug - Channel redesign
  47  */
  48 @NonNullByDefault
  49 public class PigpioRemoteHandler extends BaseThingHandler {
  50     private final Logger logger = LoggerFactory.getLogger(PigpioRemoteHandler.class);
  51     private final Map<ChannelUID, ChannelHandler> channelHandlers = new HashMap<>();
  52
  53     /**
  54      * Instantiates a new pigpio remote bridge handler.
  55      *
  56      * @param thing the thing
  57      */
  58     public PigpioRemoteHandler(Thing thing) {
  59         super(thing);
  60     }
  61
  62     @Override
  63     public void handleCommand(ChannelUID channelUID, Command command) {
  64         ChannelHandler channelHandler = channelHandlers.get(channelUID);
  65         if (channelHandler != null) {
  66             channelHandler.handleCommand(command);
  67         }
  68     }
  69
  70     @Override
  71     public void initialize() {
  72         PigpioConfiguration config = getConfigAs(PigpioConfiguration.class);
  73         String host = config.host;
  74         int port = config.port;
  75         JPigpio jPigpio;
  76         if (host == null) {
  77             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.CONFIGURATION_ERROR,
  78                     "Cannot connect to PiGPIO Service on remote raspberry. IP address not set.");
  79             return;
  80         }
  81         try {
  82             jPigpio = new PigpioSocket(host, port);
  83             updateStatus(ThingStatus.ONLINE);
  84         } catch (PigpioException e) {
  85             if (e.getErrorCode() == PigpioException.PI_BAD_SOCKET_PORT) {
  86                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.CONFIGURATION_ERROR, "Port out of range");
  87             } else {
  88                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR,
  89                         e.getLocalizedMessage());
  90             }
  91             return;
  92         }
  93         thing.getChannels().forEach(channel -> {
  94             ChannelUID channelUID = channel.getUID();
  95             ChannelTypeUID type = channel.getChannelTypeUID();
  96             try {
  97                 if (CHANNEL_TYPE_DIGITAL_INPUT.equals(type)) {
  98                     GPIOInputConfiguration configuration = channel.getConfiguration().as(GPIOInputConfiguration.class);
  99                     channelHandlers.put(channelUID, new PigpioDigitalInputHandler(configuration, jPigpio, scheduler,
 100                             state -> updateState(channelUID.getId(), state)));
 101                 } else if (CHANNEL_TYPE_DIGITAL_OUTPUT.equals(type)) {
 102                     GPIOOutputConfiguration configuration = channel.getConfiguration()
 103                             .as(GPIOOutputConfiguration.class);
 104                     channelHandlers.put(channelUID, new PigpioDigitalOutputHandler(configuration, jPigpio,
 105                             state -> updateState(channelUID.getId(), state)));
 106                 }
 107             } catch (PigpioException e) {
 108                 logger.warn("Failed to initialize {}: {}", channelUID, e.getMessage());
 109             } catch (InvalidPullUpDownException e) {
 110                 logger.warn("Failed to initialize {}: Invalid Pull Up/Down resistor configuration", channelUID);
 111             } catch (NoGpioIdException e) {
 112                 logger.warn("Failed to initialize {}: GpioId is not set", channelUID);
 113             }
 114         });
 115     }
 116 }