<artifactId>org.openhab.binding.fronius</artifactId>
<name>openHAB Add-ons :: Bundles :: Fronius Binding</name>
-
</project>
--- /dev/null
+/**
+ * Copyright (c) 2010-2022 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.binding.fronius.internal;
+
+import java.io.IOException;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.eclipse.jdt.annotation.Nullable;
+
+/**
+ * Exception for unexpected response from or communication failure with the Fronius controller.
+ *
+ * @author Jimmy Tanagra - Initial contribution
+ */
+@NonNullByDefault
+public class FroniusCommunicationException extends IOException {
+ private static final long serialVersionUID = 619020705591964155L;
+
+ public FroniusCommunicationException(String message) {
+ super(message);
+ }
+
+ public FroniusCommunicationException(Throwable ex) {
+ super(ex);
+ }
+
+ public FroniusCommunicationException(String message, @Nullable Throwable cause) {
+ super(message, cause);
+ }
+}
import java.util.HashSet;
import java.util.Set;
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.eclipse.jdt.annotation.Nullable;
import org.openhab.binding.fronius.internal.handler.FroniusBridgeHandler;
import org.openhab.binding.fronius.internal.handler.FroniusMeterHandler;
import org.openhab.binding.fronius.internal.handler.FroniusOhmpilotHandler;
* @author Hannes Spenger - Added ohmpilot
*/
@Component(service = ThingHandlerFactory.class, configurationPid = "binding.fronius")
+@NonNullByDefault
public class FroniusHandlerFactory extends BaseThingHandlerFactory {
private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = new HashSet<ThingTypeUID>() {
}
@Override
- protected ThingHandler createHandler(Thing thing) {
+ protected @Nullable ThingHandler createHandler(Thing thing) {
ThingTypeUID thingTypeUID = thing.getThingTypeUID();
if (thingTypeUID.equals(THING_TYPE_INVERTER)) {
--- /dev/null
+/**
+ * Copyright (c) 2010-2022 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.binding.fronius.internal;
+
+import java.io.IOException;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.openhab.core.io.net.http.HttpUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ *
+ * A version of HttpUtil implementation that retries on failure
+ *
+ * @author Jimmy Tanagra - Initial contribution
+ *
+ */
+@NonNullByDefault
+public class FroniusHttpUtil {
+ private static final Logger logger = LoggerFactory.getLogger(FroniusHttpUtil.class);
+
+ /**
+ * Issue a HTTP GET request and retry on failure
+ *
+ * @param url the url to execute
+ * @param timeout the socket timeout in milliseconds to wait for data
+ * @return the response body
+ * @throws FroniusCommunicationException when the request execution failed or interrupted
+ */
+ public synchronized static String executeUrl(String url, int timeout) throws FroniusCommunicationException {
+ int attemptCount = 1;
+ try {
+ while (true) {
+ Throwable lastException = null;
+ String result = null;
+ try {
+ result = HttpUtil.executeUrl("GET", url, timeout);
+ } catch (IOException e) {
+ // HttpUtil::executeUrl wraps InterruptedException into IOException.
+ // Unwrap and rethrow it so that we don't retry on InterruptedException
+ if (e.getCause() instanceof InterruptedException) {
+ throw (InterruptedException) e.getCause();
+ }
+ lastException = e;
+ }
+
+ if (result != null) {
+ if (attemptCount > 1) {
+ logger.debug("Attempt #{} successful {}", attemptCount, url);
+ }
+ return result;
+ }
+
+ if (attemptCount >= 3) {
+ logger.debug("Failed connecting to {} after {} attempts.", url, attemptCount, lastException);
+ throw new FroniusCommunicationException("Unable to connect", lastException);
+ }
+
+ logger.debug("HTTP error on attempt #{} {}", attemptCount, url);
+ Thread.sleep(500 * attemptCount);
+ attemptCount++;
+ }
+ } catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ throw new FroniusCommunicationException("Interrupted", e);
+ }
+ }
+}
*/
package org.openhab.binding.fronius.internal.handler;
-import java.io.IOException;
import java.math.BigDecimal;
+import org.eclipse.jdt.annotation.NonNull;
import org.openhab.binding.fronius.internal.FroniusBridgeConfiguration;
+import org.openhab.binding.fronius.internal.FroniusCommunicationException;
+import org.openhab.binding.fronius.internal.FroniusHttpUtil;
import org.openhab.binding.fronius.internal.api.BaseFroniusResponse;
+import org.openhab.binding.fronius.internal.api.HeadStatus;
import org.openhab.binding.fronius.internal.api.ValueUnit;
-import org.openhab.core.io.net.http.HttpUtil;
import org.openhab.core.library.types.DecimalType;
import org.openhab.core.library.types.QuantityType;
import org.openhab.core.library.types.StringType;
import org.openhab.core.thing.ThingStatus;
import org.openhab.core.thing.ThingStatusDetail;
import org.openhab.core.thing.binding.BaseThingHandler;
-import org.openhab.core.thing.binding.ThingHandler;
import org.openhab.core.types.Command;
import org.openhab.core.types.RefreshType;
import org.openhab.core.types.State;
* @author Gerrit Beine - Initial contribution
* @author Thomas Rokohl - Refactoring to merge the concepts
* @author Thomas Kordelle - Added inverter power, battery state of charge and PV solar yield
+ * @author Jimmy Tanagra - Implement connection retry
*/
public abstract class FroniusBaseThingHandler extends BaseThingHandler {
@Override
public void initialize() {
- if (getFroniusBridgeHandler() == null) {
- logger.debug("Initializing {} Service is only supported within a bridge", serviceDescription);
- updateStatus(ThingStatus.OFFLINE);
- return;
- }
logger.debug("Initializing {} Service", serviceDescription);
- getFroniusBridgeHandler().registerService(this);
- }
-
- private synchronized FroniusBridgeHandler getFroniusBridgeHandler() {
- if (this.bridgeHandler == null) {
- Bridge bridge = getBridge();
- if (bridge == null) {
- return null;
- }
- ThingHandler handler = bridge.getHandler();
- if (handler instanceof FroniusBridgeHandler) {
- this.bridgeHandler = (FroniusBridgeHandler) handler;
- } else {
- return null;
- }
+ // this is important so FroniusBridgeHandler::childHandlerInitialized gets called
+ Bridge bridge = getBridge();
+ if (bridge == null || bridge.getHandler() == null) {
+ updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_UNINITIALIZED);
+ } else if (bridge.getStatus() == ThingStatus.ONLINE) {
+ updateStatus(ThingStatus.UNKNOWN);
+ } else {
+ updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE);
}
- return this.bridgeHandler;
}
/**
} else {
logger.warn("Update channel {}: Unsupported value type {}", channelId, value.getClass().getSimpleName());
}
- logger.debug("Update channel {} with state {} ({})", channelId, (state == null) ? "null" : state.toString(),
+ logger.trace("Update channel {} with state {} ({})", channelId, (state == null) ? "null" : state.toString(),
value.getClass().getSimpleName());
// Update the channel
protected abstract Object getValue(String channelId);
/**
- * do whatever a thing must do to update the values
+ * Called by the bridge to fetch data and update channels
+ *
+ * @param bridgeConfiguration the connected bridge configuration
+ */
+ public void refresh(FroniusBridgeConfiguration bridgeConfiguration) {
+ try {
+ handleRefresh(bridgeConfiguration);
+ if (getThing().getStatus() != ThingStatus.ONLINE) {
+ updateStatus(ThingStatus.ONLINE);
+ }
+ } catch (FroniusCommunicationException | RuntimeException e) {
+ logger.debug("Exception caught in refresh() for {}", getThing().getUID().getId(), e);
+ updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
+ }
+ }
+
+ /**
+ * This method should be overridden to do whatever a thing must do to update its channels
* this function is called from the bridge in a given interval
*
* @param bridgeConfiguration the connected bridge configuration
*/
- public abstract void refresh(FroniusBridgeConfiguration bridgeConfiguration);
+ protected abstract void handleRefresh(FroniusBridgeConfiguration bridgeConfiguration)
+ throws FroniusCommunicationException;
/**
*
* @param url to request
* @return the object representation of the json response
*/
- protected <T extends BaseFroniusResponse> T collectDataFormUrl(Class<T> type, String url) {
- T result = null;
- boolean resultOk = false;
- String errorMsg = null;
-
+ protected @NonNull <T extends BaseFroniusResponse> T collectDataFromUrl(Class<T> type, String url)
+ throws FroniusCommunicationException {
try {
- logger.debug("URL = {}", url);
- String response = HttpUtil.executeUrl("GET", url, API_TIMEOUT);
+ int attempts = 1;
+ while (true) {
+ logger.trace("Fetching URL = {}", url);
+ String response = FroniusHttpUtil.executeUrl(url, API_TIMEOUT);
+ logger.trace("aqiResponse = {}", response);
+
+ T result = gson.fromJson(response, type);
+ if (result == null) {
+ throw new FroniusCommunicationException("Empty json result");
+ }
- if (response != null) {
- logger.debug("aqiResponse = {}", response);
- result = gson.fromJson(response, type);
- }
+ HeadStatus status = result.getHead().getStatus();
+ if (status.getCode() == 0) {
+ return result;
+ }
- if (result == null) {
- errorMsg = "no data returned";
- } else {
- if (result.getHead().getStatus().getCode() == 0) {
- resultOk = true;
- } else {
- errorMsg = result.getHead().getStatus().getReason();
+ // Sometimes Fronius would return a HTTP status 200 with a proper JSON data
+ // with Reason: Transfer timeout.
+ //
+ // "Status" : {
+ // "Code" : 8,
+ // "Reason" : "Transfer timeout.",
+ // "UserMessage" : ""
+ // },
+ logger.debug("Error from Fronius attempt #{}: {} - {}", attempts, status.getCode(), status.getReason());
+ if (attempts >= 3) {
+ throw new FroniusCommunicationException(status.getReason());
}
+ Thread.sleep(500 * attempts);
+ attempts++;
}
- if (!resultOk) {
- logger.debug("Error in fronius response: {}", errorMsg);
- }
- } catch (JsonSyntaxException | NumberFormatException e) {
- errorMsg = "Invalid JSON data received";
- logger.debug("Error running fronius request: {}", e.getMessage());
- } catch (IOException | IllegalStateException e) {
- errorMsg = e.getMessage();
- logger.debug("Error running fronius request: {}", errorMsg);
- }
- // Update the thing status
- if (resultOk) {
- updateStatus(ThingStatus.ONLINE);
- } else {
- updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR, errorMsg);
+ } catch (JsonSyntaxException | NumberFormatException e) {
+ logger.debug("Received Invalid JSON Data", e);
+ throw new FroniusCommunicationException("Invalid JSON data received", e);
+ } catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ throw new FroniusCommunicationException("Data collection interrupted", e);
}
- return resultOk ? result : null;
}
}
*/
package org.openhab.binding.fronius.internal.handler;
-import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.eclipse.jdt.annotation.Nullable;
import org.openhab.binding.fronius.internal.FroniusBridgeConfiguration;
-import org.openhab.core.io.net.http.HttpUtil;
+import org.openhab.binding.fronius.internal.FroniusCommunicationException;
+import org.openhab.binding.fronius.internal.FroniusHttpUtil;
import org.openhab.core.thing.Bridge;
import org.openhab.core.thing.ChannelUID;
+import org.openhab.core.thing.Thing;
import org.openhab.core.thing.ThingStatus;
import org.openhab.core.thing.ThingStatusDetail;
import org.openhab.core.thing.binding.BaseBridgeHandler;
+import org.openhab.core.thing.binding.ThingHandler;
import org.openhab.core.types.Command;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
* @author Gerrit Beine - Initial contribution
* @author Thomas Rokohl - Refactoring to merge the concepts.
* Check if host is reachable.
+ * @author Jimmy Tanagra - Refactor the child services registration
+ * Refactor host online check
*/
+@NonNullByDefault
public class FroniusBridgeHandler extends BaseBridgeHandler {
private final Logger logger = LoggerFactory.getLogger(FroniusBridgeHandler.class);
private static final int DEFAULT_REFRESH_PERIOD = 10;
private final Set<FroniusBaseThingHandler> services = new HashSet<>();
- private ScheduledFuture<?> refreshJob;
+ private @Nullable ScheduledFuture<?> refreshJob;
public FroniusBridgeHandler(Bridge bridge) {
super(bridge);
public void handleCommand(ChannelUID channelUID, Command command) {
}
- public void registerService(final FroniusBaseThingHandler service) {
- this.services.add(service);
- }
-
@Override
public void initialize() {
final FroniusBridgeConfiguration config = getConfigAs(FroniusBridgeConfiguration.class);
}
if (validConfig) {
- startAutomaticRefresh(config);
+ startAutomaticRefresh();
} else {
updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, errorMsg);
}
public void dispose() {
if (refreshJob != null) {
refreshJob.cancel(true);
+ refreshJob = null;
+ }
+ }
+
+ @Override
+ public void childHandlerInitialized(ThingHandler childHandler, Thing childThing) {
+ if (childHandler instanceof FroniusBaseThingHandler) {
+ this.services.add((FroniusBaseThingHandler) childHandler);
+ restartAutomaticRefresh();
+ } else {
+ logger.debug("Child handler {} not added because it is not an instance of FroniusBaseThingHandler",
+ childThing.getUID().getId());
+ }
+ }
+
+ @Override
+ public void childHandlerDisposed(ThingHandler childHandler, Thing childThing) {
+ this.services.remove((FroniusBaseThingHandler) childHandler);
+ }
+
+ private void restartAutomaticRefresh() {
+ if (refreshJob != null) { // refreshJob should be null if the config isn't valid
+ refreshJob.cancel(false);
+ startAutomaticRefresh();
}
- services.clear();
}
/**
* Start the job refreshing the data
*/
- private void startAutomaticRefresh(FroniusBridgeConfiguration config) {
+ private void startAutomaticRefresh() {
if (refreshJob == null || refreshJob.isCancelled()) {
+ final FroniusBridgeConfiguration config = getConfigAs(FroniusBridgeConfiguration.class);
Runnable runnable = () -> {
- boolean online = false;
try {
- if (HttpUtil.executeUrl("GET", "http://" + config.hostname, 5000) != null) {
- online = true;
+ checkBridgeOnline(config);
+ if (getThing().getStatus() != ThingStatus.ONLINE) {
+ updateStatus(ThingStatus.ONLINE);
}
- } catch (IOException e) {
- logger.debug("Connection Error: {}", e.getMessage());
- }
-
- if (!online) {
- updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR,
- "hostname or ip is not reachable");
- } else {
- updateStatus(ThingStatus.ONLINE);
for (FroniusBaseThingHandler service : services) {
service.refresh(config);
}
+ } catch (FroniusCommunicationException e) {
+ updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR, e.getMessage());
}
};
int delay = (config.refreshInterval != null) ? config.refreshInterval.intValue() : DEFAULT_REFRESH_PERIOD;
- refreshJob = scheduler.scheduleWithFixedDelay(runnable, 0, delay, TimeUnit.SECONDS);
+ refreshJob = scheduler.scheduleWithFixedDelay(runnable, 1, delay, TimeUnit.SECONDS);
}
}
+
+ private void checkBridgeOnline(FroniusBridgeConfiguration config) throws FroniusCommunicationException {
+ FroniusHttpUtil.executeUrl("http://" + config.hostname, 5000);
+ }
}
import org.openhab.binding.fronius.internal.FroniusBaseDeviceConfiguration;
import org.openhab.binding.fronius.internal.FroniusBindingConstants;
import org.openhab.binding.fronius.internal.FroniusBridgeConfiguration;
+import org.openhab.binding.fronius.internal.FroniusCommunicationException;
import org.openhab.binding.fronius.internal.api.MeterRealtimeBodyDataDTO;
import org.openhab.binding.fronius.internal.api.MeterRealtimeResponseDTO;
import org.openhab.core.library.types.QuantityType;
}
@Override
- public void refresh(FroniusBridgeConfiguration bridgeConfiguration) {
+ protected void handleRefresh(FroniusBridgeConfiguration bridgeConfiguration) throws FroniusCommunicationException {
updateData(bridgeConfiguration, config);
updateChannels();
updateProperties();
/**
* Get new data
*/
- private void updateData(FroniusBridgeConfiguration bridgeConfiguration, FroniusBaseDeviceConfiguration config) {
+ private void updateData(FroniusBridgeConfiguration bridgeConfiguration, FroniusBaseDeviceConfiguration config)
+ throws FroniusCommunicationException {
MeterRealtimeResponseDTO meterRealtimeResponse = getMeterRealtimeData(bridgeConfiguration.hostname,
config.deviceId);
- if (meterRealtimeResponse == null) {
- meterRealtimeBodyData = null;
- } else {
- meterRealtimeBodyData = meterRealtimeResponse.getBody().getData();
- }
+ meterRealtimeBodyData = meterRealtimeResponse.getBody().getData();
}
/**
* @param deviceId of the device
* @return {MeterRealtimeResponse} the object representation of the json response
*/
- private MeterRealtimeResponseDTO getMeterRealtimeData(String ip, int deviceId) {
+ private MeterRealtimeResponseDTO getMeterRealtimeData(String ip, int deviceId)
+ throws FroniusCommunicationException {
String location = FroniusBindingConstants.METER_REALTIME_DATA_URL.replace("%IP%",
(ip != null ? ip.trim() : ""));
location = location.replace("%DEVICEID%", Integer.toString(deviceId));
- return collectDataFormUrl(MeterRealtimeResponseDTO.class, location);
+ return collectDataFromUrl(MeterRealtimeResponseDTO.class, location);
}
}
import org.openhab.binding.fronius.internal.FroniusBaseDeviceConfiguration;
import org.openhab.binding.fronius.internal.FroniusBindingConstants;
import org.openhab.binding.fronius.internal.FroniusBridgeConfiguration;
+import org.openhab.binding.fronius.internal.FroniusCommunicationException;
import org.openhab.binding.fronius.internal.api.OhmpilotRealtimeBodyDataDTO;
import org.openhab.binding.fronius.internal.api.OhmpilotRealtimeResponseDTO;
import org.openhab.core.library.types.DecimalType;
}
@Override
- public void refresh(FroniusBridgeConfiguration bridgeConfiguration) {
+ public void handleRefresh(FroniusBridgeConfiguration bridgeConfiguration) throws FroniusCommunicationException {
updateData(bridgeConfiguration, config);
updateChannels();
updateProperties();
/**
* Get new data
*/
- private void updateData(FroniusBridgeConfiguration bridgeConfiguration, FroniusBaseDeviceConfiguration config) {
+ private void updateData(FroniusBridgeConfiguration bridgeConfiguration, FroniusBaseDeviceConfiguration config)
+ throws FroniusCommunicationException {
OhmpilotRealtimeResponseDTO ohmpilotRealtimeResponse = getOhmpilotRealtimeData(bridgeConfiguration.hostname,
config.deviceId);
- if (ohmpilotRealtimeResponse == null) {
- ohmpilotRealtimeBodyData = null;
- } else {
- ohmpilotRealtimeBodyData = ohmpilotRealtimeResponse.getBody().getData();
- }
+ ohmpilotRealtimeBodyData = ohmpilotRealtimeResponse.getBody().getData();
}
/**
* @param deviceId of the device
* @return {OhmpilotRealtimeResponse} the object representation of the json response
*/
- private OhmpilotRealtimeResponseDTO getOhmpilotRealtimeData(String ip, int deviceId) {
+ private OhmpilotRealtimeResponseDTO getOhmpilotRealtimeData(String ip, int deviceId)
+ throws FroniusCommunicationException {
String location = FroniusBindingConstants.OHMPILOT_REALTIME_DATA_URL.replace("%IP%",
(ip != null ? ip.trim() : ""));
location = location.replace("%DEVICEID%", Integer.toString(deviceId));
- return collectDataFormUrl(OhmpilotRealtimeResponseDTO.class, location);
+ return collectDataFromUrl(OhmpilotRealtimeResponseDTO.class, location);
}
}
import org.openhab.binding.fronius.internal.FroniusBaseDeviceConfiguration;
import org.openhab.binding.fronius.internal.FroniusBindingConstants;
import org.openhab.binding.fronius.internal.FroniusBridgeConfiguration;
+import org.openhab.binding.fronius.internal.FroniusCommunicationException;
import org.openhab.binding.fronius.internal.api.InverterRealtimeResponse;
import org.openhab.binding.fronius.internal.api.PowerFlowRealtimeInverter;
import org.openhab.binding.fronius.internal.api.PowerFlowRealtimeResponse;
}
@Override
- public void refresh(FroniusBridgeConfiguration bridgeConfiguration) {
+ protected void handleRefresh(FroniusBridgeConfiguration bridgeConfiguration) throws FroniusCommunicationException {
updateData(bridgeConfiguration, config);
updateChannels();
}
/**
* Get new data
*/
- private void updateData(FroniusBridgeConfiguration bridgeConfiguration, FroniusBaseDeviceConfiguration config) {
+ private void updateData(FroniusBridgeConfiguration bridgeConfiguration, FroniusBaseDeviceConfiguration config)
+ throws FroniusCommunicationException {
inverterRealtimeResponse = getRealtimeData(bridgeConfiguration.hostname, config.deviceId);
powerFlowResponse = getPowerFlowRealtime(bridgeConfiguration.hostname);
}
* @param ip address of the device
* @return {PowerFlowRealtimeResponse} the object representation of the json response
*/
- private PowerFlowRealtimeResponse getPowerFlowRealtime(String ip) {
+ private PowerFlowRealtimeResponse getPowerFlowRealtime(String ip) throws FroniusCommunicationException {
String location = FroniusBindingConstants.POWERFLOW_REALTIME_DATA.replace("%IP%",
(ip != null ? ip.trim() : ""));
- return collectDataFormUrl(PowerFlowRealtimeResponse.class, location);
+ return collectDataFromUrl(PowerFlowRealtimeResponse.class, location);
}
/**
* @param deviceId of the device
* @return {InverterRealtimeResponse} the object representation of the json response
*/
- private InverterRealtimeResponse getRealtimeData(String ip, int deviceId) {
+ private InverterRealtimeResponse getRealtimeData(String ip, int deviceId) throws FroniusCommunicationException {
String location = FroniusBindingConstants.INVERTER_REALTIME_DATA_URL.replace("%IP%",
(ip != null ? ip.trim() : ""));
location = location.replace("%DEVICEID%", Integer.toString(deviceId));
- return collectDataFormUrl(InverterRealtimeResponse.class, location);
+ return collectDataFromUrl(InverterRealtimeResponse.class, location);
}
}
<label>Hostname</label>
<description>The hostname or IP address of the Fronius gateway/device</description>
</parameter>
- <parameter name="refreshInterval" type="integer" min="2">
+ <parameter name="refreshInterval" type="integer" min="1">
<label>Refresh Interval</label>
<description>Specifies the refresh interval in seconds.</description>
<default>10</default>