Mi Band 4: Support flashing watchfaces

FLASHING FIRMWARE/RES/FONT IS STILL UNTESTED

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiFirmwareInfo.java

@@ -106,12 +106,14 @@ public abstract class HuamiFirmwareInfo {
     }
 
     private final int crc16;
+    private final int crc32;
 
     private byte[] bytes;
 
     public HuamiFirmwareInfo(byte[] bytes) {
         this.bytes = bytes;
         crc16 = CheckSums.getCRC16(bytes);
+        crc32 = CheckSums.getCRC32(bytes);
         firmwareType = determineFirmwareType(bytes);
     }
 
@@ -140,6 +142,9 @@ public abstract class HuamiFirmwareInfo {
     public int getCrc16() {
         return crc16;
     }
+    public int getCrc32() {
+        return crc32;
+    }
 
     public int getFirmwareVersion() {
         return getCrc16(); // HACK until we know how to determine the version from the fw bytes

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiSupport.java

@@ -113,7 +113,6 @@ import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.actions.StopNo
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.miband2.Mi2NotificationStrategy;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.miband2.Mi2TextNotificationStrategy;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations.FetchActivityOperation;
-import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations.FetchSportsSummaryOperation;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations.InitOperation;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations.UpdateFirmwareOperation;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.miband.NotificationStrategy;
@@ -1000,7 +999,7 @@ public class HuamiSupport extends AbstractBTLEDeviceSupport {
     @Override
     public void onInstallApp(Uri uri) {
         try {
-            new UpdateFirmwareOperation(uri, this).perform();
+            createUpdateFirmwareOperation(uri).perform();
         } catch (IOException ex) {
             GB.toast(getContext(), "Firmware cannot be installed: " + ex.getMessage(), Toast.LENGTH_LONG, GB.ERROR, ex);
         }
@@ -1965,4 +1964,8 @@ public class HuamiSupport extends AbstractBTLEDeviceSupport {
     public HuamiFWHelper createFWHelper(Uri uri, Context context) throws IOException {
         return new MiBand2FWHelper(uri, context);
     }
+
+    public UpdateFirmwareOperation createUpdateFirmwareOperation(Uri uri) {
+        return new UpdateFirmwareOperation(uri, this);
+    }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/miband4/MiBand4Support.java

@@ -24,6 +24,7 @@ import java.io.IOException;
 import nodomain.freeyourgadget.gadgetbridge.devices.huami.HuamiFWHelper;
 import nodomain.freeyourgadget.gadgetbridge.devices.huami.miband4.MiBand4FWHelper;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.miband3.MiBand3Support;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations.UpdateFirmwareOperationNew;
 
 public class MiBand4Support extends MiBand3Support {
 
@@ -36,4 +37,9 @@ public class MiBand4Support extends MiBand3Support {
     public HuamiFWHelper createFWHelper(Uri uri, Context context) throws IOException {
         return new MiBand4FWHelper(uri, context);
     }
+
+    @Override
+    public UpdateFirmwareOperationNew createUpdateFirmwareOperation(Uri uri) {
+        return new UpdateFirmwareOperationNew(uri, this);
+    }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/operations/UpdateFirmwareOperation.java

@@ -50,8 +50,8 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
     private static final Logger LOG = LoggerFactory.getLogger(UpdateFirmwareOperation.class);
 
     protected final Uri uri;
-    protected final BluetoothGattCharacteristic fwCControlChar;
+    final BluetoothGattCharacteristic fwCControlChar;
-    protected final BluetoothGattCharacteristic fwCDataChar;
+    private final BluetoothGattCharacteristic fwCDataChar;
     protected final Prefs prefs = GBApplication.getPrefs();
     protected HuamiFirmwareInfo firmwareInfo;
 
@@ -81,7 +81,7 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
         //the firmware will be sent by the notification listener if the band confirms that the metadata are ok.
     }
 
-    protected HuamiFirmwareInfo createFwInfo(Uri uri, Context context) throws IOException {
+    private HuamiFirmwareInfo createFwInfo(Uri uri, Context context) throws IOException {
         HuamiFWHelper fwHelper = getSupport().createFWHelper(uri, context);
         return fwHelper.getFirmwareInfo();
     }
@@ -128,8 +128,8 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
      * @param value
      */
     private void handleNotificationNotif(byte[] value) {
-        if (value.length != 3) {
+        if (value.length != 3 && value.length != 11) {
-            LOG.error("Notifications should be 3 bytes long.");
+            LOG.error("Notifications should be 3 or 11 bytes long.");
             getSupport().logMessageContent(value);
             return;
         }
@@ -160,7 +160,6 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
                     case HuamiService.COMMAND_FIRMWARE_REBOOT: {
                         LOG.info("Reboot command successfully sent.");
                         GB.updateInstallNotification(getContext().getString(R.string.updatefirmwareoperation_update_complete), false, 100, getContext());
-//                    getSupport().onReboot();
                         done();
                         break;
                     }
@@ -170,7 +169,6 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
                         operationFailed();
                         displayMessage(getContext(), getContext().getString(R.string.updatefirmwareoperation_updateproblem_do_not_reboot), Toast.LENGTH_LONG, GB.ERROR);
                         done();
-                        return;
                     }
                 }
             } catch (Exception ex) {
@@ -185,7 +183,8 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
             done();
         }
     }
-    protected void displayMessage(Context context, String message, int duration, int severity) {
+
+    private void displayMessage(Context context, String message, int duration, int severity) {
         getSupport().handleGBDeviceEvent(new GBDeviceEventDisplayMessage(message, duration, severity));
     }
 
@@ -208,7 +207,7 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
             bytes[i++] = sizeBytes[1];
             bytes[i++] = sizeBytes[2];
             if (!isFirmwareCode) {
-                bytes[i++] = getFirmwareInfo().getFirmwareType().getValue();
+                bytes[i] = getFirmwareInfo().getFirmwareType().getValue();
             }
 
             builder.write(fwCControlChar, bytes);
@@ -241,10 +240,7 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
             int firmwareProgress = 0;
 
             TransactionBuilder builder = performInitialized("send firmware packet");
-            if (prefs.getBoolean("mi_low_latency_fw_update", true)) {
+            builder.write(fwCControlChar, getFirmwareStartCommand());
-                getSupport().setLowLatency(builder);
-            }
-            builder.write(fwCControlChar, new byte[] { HuamiService.COMMAND_FIRMWARE_START_DATA });
 
             for (int i = 0; i < packets; i++) {
                 byte[] fwChunk = Arrays.copyOfRange(fwbytes, i * packetLength, i * packetLength + packetLength);
@@ -262,14 +258,13 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
             if (firmwareProgress < len) {
                 byte[] lastChunk = Arrays.copyOfRange(fwbytes, packets * packetLength, len);
                 builder.write(fwCDataChar, lastChunk);
-                firmwareProgress = len;
             }
 
             builder.write(fwCControlChar, new byte[]{HuamiService.COMMAND_FIRMWARE_UPDATE_SYNC});
             builder.queue(getQueue());
 
         } catch (IOException ex) {
-            LOG.error("Unable to send fw to MI 2", ex);
+            LOG.error("Unable to send fw to device", ex);
             GB.updateInstallNotification(getContext().getString(R.string.updatefirmwareoperation_firmware_not_sent), false, 0, getContext());
             return false;
         }
@@ -277,11 +272,11 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
     }
 
 
-    private void sendChecksum(HuamiFirmwareInfo firmwareInfo) throws IOException {
+    protected void sendChecksum(HuamiFirmwareInfo firmwareInfo) throws IOException {
         TransactionBuilder builder = performInitialized("send firmware checksum");
         int crc16 = firmwareInfo.getCrc16();
         byte[] bytes = BLETypeConversions.fromUint16(crc16);
-        builder.write(fwCControlChar, new byte[] {
+        builder.write(fwCControlChar, new byte[]{
                 HuamiService.COMMAND_FIRMWARE_CHECKSUM,
                 bytes[0],
                 bytes[1],
@@ -289,7 +284,11 @@ public class UpdateFirmwareOperation extends AbstractHuamiOperation {
         builder.queue(getQueue());
     }
 
-    private HuamiFirmwareInfo getFirmwareInfo() {
+    HuamiFirmwareInfo getFirmwareInfo() {
         return firmwareInfo;
     }
-}
+
+    protected byte[] getFirmwareStartCommand() {
+        return new byte[]{HuamiService.COMMAND_FIRMWARE_START_DATA};
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/operations/UpdateFirmwareOperationNew.java

@@ -0,0 +1,105 @@
+/*  Copyright (C) 2016-2019 Andreas Shimokawa, Carsten Pfeiffer, Daniele
+    Gobbetti
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations;
+
+import android.bluetooth.BluetoothGatt;
+import android.bluetooth.BluetoothGattCharacteristic;
+import android.content.Context;
+import android.net.Uri;
+import android.widget.Toast;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.UUID;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.R;
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventDisplayMessage;
+import nodomain.freeyourgadget.gadgetbridge.devices.huami.HuamiFWHelper;
+import nodomain.freeyourgadget.gadgetbridge.devices.huami.HuamiService;
+import nodomain.freeyourgadget.gadgetbridge.model.DeviceType;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.BLETypeConversions;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceBusyAction;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetProgressAction;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.AbstractHuamiOperation;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.HuamiFirmwareInfo;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.HuamiFirmwareType;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.HuamiSupport;
+import nodomain.freeyourgadget.gadgetbridge.util.GB;
+import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
+
+public class UpdateFirmwareOperationNew extends UpdateFirmwareOperation {
+    private static final Logger LOG = LoggerFactory.getLogger(UpdateFirmwareOperationNew.class);
+
+
+    public UpdateFirmwareOperationNew(Uri uri, HuamiSupport support) {
+        super(uri, support);
+    }
+
+
+    public boolean sendFwInfo() {
+        try {
+            TransactionBuilder builder = performInitialized("send firmware info");
+            builder.add(new SetDeviceBusyAction(getDevice(), getContext().getString(R.string.updating_firmware), getContext()));
+            int fwSize = getFirmwareInfo().getSize();
+            byte[] sizeBytes = BLETypeConversions.fromUint24(fwSize);
+            byte[] bytes = new byte[10];
+            int i = 0;
+            bytes[i++] = HuamiService.COMMAND_FIRMWARE_INIT;
+            bytes[i++] = getFirmwareInfo().getFirmwareType().getValue();
+            bytes[i++] = sizeBytes[0];
+            bytes[i++] = sizeBytes[1];
+            bytes[i++] = sizeBytes[2];
+            bytes[i++] = 0; // TODO: what is that?
+            int crc32 = firmwareInfo.getCrc32();
+            byte[] crcBytes = BLETypeConversions.fromUint32(crc32);
+            bytes[i++] = crcBytes[0];
+            bytes[i++] = crcBytes[1];
+            bytes[i++] = crcBytes[2];
+            bytes[i] = crcBytes[3];
+
+
+            builder.write(fwCControlChar, bytes);
+            builder.queue(getQueue());
+            return true;
+        } catch (IOException e) {
+            LOG.error("Error sending firmware info: " + e.getLocalizedMessage(), e);
+            return false;
+        }
+    }
+
+    @Override
+    protected void sendChecksum(HuamiFirmwareInfo firmwareInfo) throws IOException {
+        TransactionBuilder builder = performInitialized("send firmware upload finished");
+        builder.write(fwCControlChar, new byte[]{HuamiService.COMMAND_FIRMWARE_CHECKSUM});
+        builder.queue(getQueue());
+    }
+
+    @Override
+    protected byte[] getFirmwareStartCommand() {
+        byte typeByte = 0; //TODO: what is this really?
+        if (getFirmwareInfo().getFirmwareType() == HuamiFirmwareType.WATCHFACE) {
+            typeByte = 1;
+        }
+        return new byte[]{HuamiService.COMMAND_FIRMWARE_START_DATA, typeByte};
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/CheckSums.java

@@ -20,6 +20,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.zip.CRC32;
 
 public class CheckSums {
     public static int getCRC8(byte[] seq) {
@@ -46,9 +47,9 @@ public class CheckSums {
     public static int getCRC16(byte[] seq) {
         int crc = 0xFFFF;
 
-        for (int j = 0; j < seq.length; j++) {
+        for (byte b : seq) {
             crc = ((crc >>> 8) | (crc << 8)) & 0xffff;
-            crc ^= (seq[j] & 0xff);//byte to int, trunc sign
+            crc ^= (b & 0xff);//byte to int, trunc sign
             crc ^= ((crc & 0xff) >> 4);
             crc ^= (crc << 12) & 0xffff;
             crc ^= ((crc & 0xFF) << 5) & 0xffff;
@@ -57,6 +58,12 @@ public class CheckSums {
         return crc;
     }
 
+    public static int getCRC32(byte[] seq) {
+        CRC32 crc = new CRC32();
+        crc.update(seq);
+        return (int) (crc.getValue());
+    }
+
     public static void main(String[] args) throws IOException {
         if (args == null || args.length == 0) {
             throw new IllegalArgumentException("Pass the files to be checksummed as arguments");