[opensprinkler] Fix excessive WARN in logs due to wifi dropouts, and current displays as 0 (openhab#16080)

* Fix 300mA current draw will display as 0 due to rounding.
* Remove WARN logs when retries have not yet expired.

Signed-off-by: Matthew Skinner <[email protected]>

Author: Skinah

bundles/org.openhab.binding.opensprinkler/src/main/java/org/openhab/binding/opensprinkler/internal/api/OpenSprinklerHttpApiV100.java

@@ -12,15 +12,7 @@
  */
 package org.openhab.binding.opensprinkler.internal.api;
 
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.CMD_DISABLE_MANUAL_MODE;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.CMD_ENABLE_MANUAL_MODE;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.CMD_OPTIONS_INFO;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.CMD_PASSWORD;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.CMD_STATION_INFO;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.CMD_STATUS_INFO;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.DEFAULT_STATION_COUNT;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.HTTPS_REQUEST_URL_PREFIX;
-import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.HTTP_REQUEST_URL_PREFIX;
+import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.*;
 
 import java.math.BigDecimal;
 import java.nio.charset.StandardCharsets;
@@ -397,7 +389,7 @@ public String sendHttpGet(String url, @Nullable String urlParameters)
                             .timeout(config.timeout, TimeUnit.SECONDS).method(HttpMethod.GET).send();
                     connectionSuccess = true;
                 } catch (InterruptedException | TimeoutException | ExecutionException e) {
-                    logger.warn("Request to OpenSprinkler device failed (retries left: {}): {}", retriesLeft,
+                    logger.debug("Request to OpenSprinkler device failed (retries left: {}): {}", retriesLeft,
                             e.getMessage());
                 }
             }

bundles/org.openhab.binding.opensprinkler/src/main/resources/OH-INF/thing/thing-types.xml

@@ -163,7 +163,7 @@
 		<label>Current Draw</label>
 		<description>The current draw in mA</description>
 		<category>Energy</category>
-		<state readOnly="true"/>
+		<state readOnly="true" pattern="%.1f %unit%"/>
 	</channel-type>
 
 	<channel-type id="stationState">