G5: debug version for new collection method

app/src/main/java/com/eveningoutpost/dexdrip/G5Model/GlucoseRxMessage.java

@@ -0,0 +1,64 @@
+package com.eveningoutpost.dexdrip.G5Model;
+
+import com.eveningoutpost.dexdrip.Models.JoH;
+import com.eveningoutpost.dexdrip.Models.UserError;
+import com.eveningoutpost.dexdrip.Services.G5CollectionService;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+/**
+ * Created by jamorham on 25/11/2016.
+ *
+ * Alternate mechanism for reading data cribbed from LoopKit
+ * totally experimental and untested
+ */
+
+public class GlucoseRxMessage extends TransmitterMessage {
+
+    private final static String TAG = G5CollectionService.class.getSimpleName(); // meh
+
+    public static final byte opcode = 0x31;
+    public TransmitterStatus status;
+    public int status_raw;
+    public int timestamp;
+    public int unfiltered;
+    public int filtered;
+    public int sequence; // : UInt32
+    public boolean glucoseIsDisplayOnly; // : Bool
+    public int glucose; // : UInt16
+    public int state; //: UInt8
+    public int trend; // : Int8
+
+
+    public GlucoseRxMessage(byte[] packet) {
+        UserError.Log.e(TAG, "GlucoseRX dbg: " + JoH.bytesToHex(packet));
+        if (packet.length >= 14) {
+            // TODO check CRC??
+            if (packet[0] == opcode) {
+                data = ByteBuffer.wrap(packet).order(ByteOrder.LITTLE_ENDIAN);
+
+                status_raw = data.get(1);
+                status = TransmitterStatus.getBatteryLevel(data.get(1));
+                sequence = data.getInt(2);
+                timestamp = data.getInt(6);
+
+
+                int glucoseBytes = data.getShort(10); // check signed vs unsigned!!
+                glucoseIsDisplayOnly = (glucoseBytes & 0xf000) > 0;
+                glucose = glucoseBytes & 0xfff;
+
+                state = data.get(12);
+                trend = data.get(13);
+
+                unfiltered = glucose * 1000;
+                filtered = glucose * 1000;
+
+                UserError.Log.e(TAG, "GlucoseRX: " + sequence + " ts:" + timestamp + " sg:" + glucose + " do:" + glucoseIsDisplayOnly + " ss:" + status + " sr:" + status_raw + " st:" + state + " tr:" + trend);
+
+            }
+        } else {
+            UserError.Log.e(TAG, "GlucoseRxMessage packet length received wrong: " + packet.length);
+        }
+    }
+}

app/src/main/java/com/eveningoutpost/dexdrip/G5Model/GlucoseTxMessage.java

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+package com.eveningoutpost.dexdrip.G5Model;
+
+import java.nio.ByteBuffer;
+
+/**
+ * Created by jamorham on 25/11/2016.
+ */
+
+public class GlucoseTxMessage extends TransmitterMessage {
+
+    byte opcode = 0x30;
+    byte[] crc = CRC.calculate(opcode);
+
+    public GlucoseTxMessage() {
+        data = ByteBuffer.allocate(3);
+        data.put(opcode);
+        data.put(crc);
+        byteSequence = data.array();
+    }
+}
+