diff --git a/.settings/language.settings.xml b/.settings/language.settings.xml
index 43fcf31..f3a9823 100644
--- a/.settings/language.settings.xml
+++ b/.settings/language.settings.xml
@@ -3,7 +3,7 @@
 	<configuration id="it.baeyens.arduino.core.toolChain.release.1518476005" name="Release">
 		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
-			<provider class="it.baeyens.arduino.toolchain.ArduinoLanguageProvider" console="false" env-hash="-2011256820" id="it.baeyens.arduino.languageSettingsProvider" keep-relative-paths="false" name="Arduino Compiler Settings" parameter="${COMMAND} -E -P -v -dD ${INPUTS}" prefer-non-shared="true">
+			<provider class="it.baeyens.arduino.toolchain.ArduinoLanguageProvider" console="false" env-hash="-1711982323777835197" id="it.baeyens.arduino.languageSettingsProvider" keep-relative-paths="false" name="Arduino Compiler Settings" parameter="${COMMAND} -E -P -v -dD ${INPUTS}" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
diff --git a/meterBusMaster.cpp b/meterBusMaster.cpp
index 936dd26..146814b 100644
--- a/meterBusMaster.cpp
+++ b/meterBusMaster.cpp
@@ -262,6 +262,9 @@ void MeterBusMaster::exec() {
     }
 
     int serialInChar = Serial1.read();
+    if (serialInChar != -1) {
+      Serial.print("Recv: "); Serial.println(serialInChar, 16);
+    }
     if ((serialInChar != -1) && m_expectResponse) {
       prepareResponse(false, (uint8_t)serialInChar);
     }