First commit of MedtronicUploader to support 640g.

app/src/main/java/com/nightscout/android/medtronic/DataLog.java

+package com.nightscout.android.medtronic;
+
+import java.util.Date;
+
+public class DataLog {
+	 int numEntries;
+	  Date[] dateField = new Date [4096];
+	  char[] entryType = new char [4096];
+	  int[] glucose = new int [4096];
+	  int[] calFactor = new int [4096];
+}

app/src/main/java/com/nightscout/android/medtronic/MedtronicCNLSession.java

+package com.nightscout.android.medtronic;
+
+import com.nightscout.android.medtronic.message.MessageUtils;
+
+/**
+ * Created by lgoedhart on 26/03/2016.
+ */
+public class MedtronicCNLSession {
+    private final static byte[] HMAC = MessageUtils.hexStringToByteArray("e28fe4e5cf3c1eb6d6a2ec5a093093d4f397237dc60b3f2c1ef64f31e32077c4");
+    private final static byte[] KEY = MessageUtils.hexStringToByteArray("57833334130906a587b7a0437bc28a69");
+
+    private final static long linkMAC = 1055866 + 0x0023F70682000000L;
+    private final static long pumpMAC = 1057941 + 0x0023F745EE000000L;
+
+    private byte radioChannel;
+    private int bayerSequenceNumber = 1;
+    private int medtronicSequenceNumber = 1;
+
+    public byte[] getHMAC() {
+        return HMAC;
+    }
+
+    public static byte[] getKEY() {
+        return KEY;
+    }
+    public byte[] getIV() {
+        byte[] iv = HMAC;
+        iv[0] = (byte) radioChannel;
+        return iv;
+    }
+
+    public static long getLinkMAC() {
+        return linkMAC;
+    }
+
+    public static long getPumpMAC() {
+        return pumpMAC;
+    }
+
+    public int getBayerSequenceNumber() {
+        return bayerSequenceNumber;
+    }
+
+    public int getMedtronicSequenceNumber() {
+        return medtronicSequenceNumber;
+    }
+
+    public byte getRadioChannel() {
+        return radioChannel;
+    }
+}

app/src/main/java/com/nightscout/android/medtronic/MedtronicCalibration.java

+package com.nightscout.android.medtronic;
+
+public class MedtronicCalibration {
+
+}

app/src/main/java/com/nightscout/android/medtronic/message/ChecksumException.java

+package com.nightscout.android.medtronic.message;
+
+/**
+ * Created by lgoedhart on 26/03/2016.
+ */
+public class ChecksumException extends Throwable {
+    public ChecksumException(String message) {
+        super(message);
+    }
+}