add logging for decrypted messages & payload

app/src/main/java/info/nightscout/android/medtronic/message/MedtronicResponseMessage.java

 package info.nightscout.android.medtronic.message;
 
+import android.util.Log;
+
 import java.nio.ByteBuffer;
 
 import javax.crypto.Cipher;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
 
+import info.nightscout.android.BuildConfig;
 import info.nightscout.android.medtronic.MedtronicCnlSession;
 import info.nightscout.android.medtronic.exception.ChecksumException;
 import info.nightscout.android.medtronic.exception.EncryptionException;
+import info.nightscout.android.utils.HexDump;
 
 /**
  * Created by lgoedhart on 26/03/2016.
  */
 public class MedtronicResponseMessage extends ContourNextLinkResponseMessage {
+    private static final String TAG = MedtronicResponseMessage.class.getSimpleName();
+
     static int ENVELOPE_SIZE = 22;
     static int ENCRYPTED_ENVELOPE_SIZE = 3;
     static int CRC_SIZE = 2;
@@ -43,6 +49,11 @@ public class MedtronicResponseMessage extends ContourNextLinkResponseMessage {
             // Should be fine provided we check the CCITT first...
             this.mPayload.position(57);
             this.mPayload.put(decryptedPayload);
+
+            if (BuildConfig.DEBUG) {
+                String outputString = HexDump.dumpHexString(this.mPayload.array());
+                Log.d(TAG, "DECRYPTED: " + outputString);
+            }
         }
     }
 

app/src/main/java/info/nightscout/android/medtronic/message/PumpStatusResponseMessage.java

@@ -8,11 +8,13 @@ import java.nio.ByteOrder;
 import java.util.Date;
 import java.util.Locale;
 
+import info.nightscout.android.BuildConfig;
 import info.nightscout.android.medtronic.MedtronicCnlSession;
 import info.nightscout.android.medtronic.exception.ChecksumException;
 import info.nightscout.android.medtronic.exception.EncryptionException;
 import info.nightscout.android.medtronic.exception.UnexpectedMessageException;
 import info.nightscout.android.model.medtronicNg.PumpStatusEvent;
+import info.nightscout.android.utils.HexDump;
 
 /**
  * Created by lgoedhart on 27/03/2016.
@@ -61,6 +63,10 @@ public class PumpStatusResponseMessage extends MedtronicSendMessageResponseMessa
         statusBuffer.order(ByteOrder.BIG_ENDIAN);
         statusBuffer.put(this.encode(), 0x39, 96);
 
+        if (BuildConfig.DEBUG) {
+            String outputString = HexDump.dumpHexString(statusBuffer.array());
+            Log.d(TAG, "PAYLOAD: " + outputString);
+        }
         // Status Flags
         suspended = ((statusBuffer.get(0x03) & 0x01) != 0x00);
         bolusing = ((statusBuffer.get(0x03) & 0x02) != 0x00);
@@ -108,9 +114,6 @@ public class PumpStatusResponseMessage extends MedtronicSendMessageResponseMessa
 
         // CGM SGV
         sgv = (statusBuffer.getShort(0x35) & 0x0000ffff); // In mg/DL. 0 means no CGM reading
-
-        // SGV Date
-
         if ((sgv & 0x200) == 0x200) {
             // Sensor error. Let's reset. FIXME - solve this more elegantly later
             sgv = 0;
@@ -123,6 +126,7 @@ public class PumpStatusResponseMessage extends MedtronicSendMessageResponseMessa
             cgmTrend = (PumpStatusEvent.CGM_TREND.fromMessageByte(statusBuffer.get(0x40)));
         }
 
+        // SGV Date
         // TODO - this should go in the sgvDate, and eventDate should be the time of this poll.
         sgvDate = MessageUtils.decodeDateTime(rtc, offset);
         Log.d(TAG, "original sgv date: " + sgvDate);

app/src/main/java/info/nightscout/android/medtronic/message/PumpTimeResponseMessage.java

@@ -6,9 +6,11 @@ import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.Date;
 
+import info.nightscout.android.BuildConfig;
 import info.nightscout.android.medtronic.MedtronicCnlSession;
 import info.nightscout.android.medtronic.exception.ChecksumException;
 import info.nightscout.android.medtronic.exception.EncryptionException;
+import info.nightscout.android.utils.HexDump;
 
 /**
  * Created by lgoedhart on 27/03/2016.
@@ -30,6 +32,12 @@ public class PumpTimeResponseMessage extends MedtronicSendMessageResponseMessage
             ByteBuffer dateBuffer = ByteBuffer.allocate(8);
             dateBuffer.order(ByteOrder.BIG_ENDIAN);
             dateBuffer.put(this.encode(), 0x3d, 8);
+
+            if (BuildConfig.DEBUG) {
+                String outputString = HexDump.dumpHexString(dateBuffer.array());
+                Log.d(TAG, "PAYLOAD: " + outputString);
+            }
+
             long rtc = dateBuffer.getInt(0) & 0x00000000ffffffffL;
             long offset = dateBuffer.getInt(4);
             pumpTime = MessageUtils.decodeDateTime(rtc, offset);

app/src/main/java/info/nightscout/android/medtronic/message/ReadHistoryInfoResponseMessage.java

@@ -5,6 +5,7 @@ import android.util.Log;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 
+import info.nightscout.android.BuildConfig;
 import info.nightscout.android.medtronic.MedtronicCnlSession;
 import info.nightscout.android.medtronic.exception.ChecksumException;
 import info.nightscout.android.medtronic.exception.EncryptionException;
@@ -32,6 +33,10 @@ public class ReadHistoryInfoResponseMessage extends MedtronicSendMessageResponse
             basalRatesBuffer.order(ByteOrder.BIG_ENDIAN);
             basalRatesBuffer.put(this.encode());
 
+            if (BuildConfig.DEBUG) {
+                String outputString = HexDump.dumpHexString(basalRatesBuffer.array());
+                Log.d(TAG, "PAYLOAD: " + outputString);
+            }
             String responseString = HexDump.dumpHexString(basalRatesBuffer.array());
             Log.d(TAG, "ReadHistoryInfo: " + responseString);
             Log.d(TAG, "ReadHistoryInfo-length: " + basalRatesBuffer.getLong(28));

app/src/main/java/info/nightscout/android/utils/HexDump.java

@@ -35,7 +35,12 @@ public class HexDump {
         byte[] line = new byte[16];
         int lineIndex = 0;
 
+        result.append("\n          ");
+        for (int i = 0; i < Math.min(16, array.length); i++) {
+            result.append(" ?" + HEX_DIGITS[i]);
+        }
         result.append("\n0x");
+
         result.append(toHexString(offset));
 
         for (int i = offset; i < offset + length; i++) {