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Garmin: Determine ML characteristic dynamically

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This commit is contained in:
José Rebelo 2024-05-26 17:56:08 +01:00
parent ef11dd0f16
commit 2fa22224bd
1 changed files with 34 additions and 8 deletions
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42
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/communicator/v2/CommunicatorV2.java
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@ -12,16 +12,21 @@ import java.nio.ByteOrder;
import java.util.Arrays;
import java.util.UUID;
import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceStateAction;
import nodomain.freeyourgadget.gadgetbridge.service.devices.garmin.GarminSupport;
import nodomain.freeyourgadget.gadgetbridge.service.devices.garmin.communicator.CobsCoDec;
import nodomain.freeyourgadget.gadgetbridge.service.devices.garmin.communicator.ICommunicator;
import nodomain.freeyourgadget.gadgetbridge.util.GB;
public class CommunicatorV2 implements ICommunicator {
public static final UUID UUID_SERVICE_GARMIN_ML_GFDI = UUID.fromString("6A4E2800-667B-11E3-949A-0800200C9A66");
public static final UUID UUID_CHARACTERISTIC_GARMIN_ML_GFDI_SEND = UUID.fromString("6a4e2822-667b-11e3-949a-0800200c9a66");
public static final UUID UUID_CHARACTERISTIC_GARMIN_ML_GFDI_RECEIVE = UUID.fromString("6a4e2812-667b-11e3-949a-0800200c9a66");
public static final String BASE_UUID = "6A4E%s-667B-11E3-949A-0800200C9A66";
public static final UUID UUID_SERVICE_GARMIN_ML_GFDI = UUID.fromString(String.format(BASE_UUID, "2800"));
private BluetoothGattCharacteristic characteristicSend;
private BluetoothGattCharacteristic characteristicReceive;
public int maxWriteSize = 20;
private static final Logger LOG = LoggerFactory.getLogger(CommunicatorV2.class);
@ -42,9 +47,25 @@ public class CommunicatorV2 implements ICommunicator {
@Override
public void initializeDevice(final TransactionBuilder builder) {
// Iterate through the known ML characteristics until we find a known pair
// send = read + 10
for (int i = 2810; i <= 2814; i++) {
characteristicReceive = mSupport.getCharacteristic(UUID.fromString(String.format(BASE_UUID, i)));
characteristicSend = mSupport.getCharacteristic(UUID.fromString(String.format(BASE_UUID, i + 10)));
builder.notify(this.mSupport.getCharacteristic(UUID_CHARACTERISTIC_GARMIN_ML_GFDI_RECEIVE), true);
builder.write(this.mSupport.getCharacteristic(UUID_CHARACTERISTIC_GARMIN_ML_GFDI_SEND), closeAllServices());
if (characteristicSend != null && characteristicReceive != null) {
LOG.debug("Using characteristics receive/send = {}/{}", characteristicReceive.getUuid(), characteristicSend.getUuid());
builder.notify(characteristicReceive, true);
builder.write(characteristicSend, closeAllServices());
return;
}
}
LOG.warn("Failed to find any known ML characteristics");
builder.add(new SetDeviceStateAction(mSupport.getDevice(), GBDevice.State.NOT_CONNECTED, mSupport.getContext()));
}
@Override
@ -63,18 +84,23 @@ public class CommunicatorV2 implements ICommunicator {
int position = 0;
while (remainingBytes > 0) {
final byte[] fragment = Arrays.copyOfRange(payload, position, position + Math.min(remainingBytes, maxWriteSize - 1));
builder.write(this.mSupport.getCharacteristic(UUID_CHARACTERISTIC_GARMIN_ML_GFDI_SEND), ArrayUtils.addAll(new byte[]{(byte) gfdiHandle}, fragment));
builder.write(characteristicSend, ArrayUtils.addAll(new byte[]{(byte) gfdiHandle}, fragment));
position += fragment.length;
remainingBytes -= fragment.length;
}
} else {
builder.write(this.mSupport.getCharacteristic(UUID_CHARACTERISTIC_GARMIN_ML_GFDI_SEND), ArrayUtils.addAll(new byte[]{(byte) gfdiHandle}, payload));
builder.write(characteristicSend, ArrayUtils.addAll(new byte[]{(byte) gfdiHandle}, payload));
}
builder.queue(this.mSupport.getQueue());
}
@Override
public boolean onCharacteristicChanged(final BluetoothGatt gatt, final BluetoothGattCharacteristic characteristic) {
if (!characteristic.getUuid().equals(characteristicReceive.getUuid())) {
// Not ML
return false;
}
ByteBuffer message = ByteBuffer.wrap(characteristic.getValue()).order(ByteOrder.LITTLE_ENDIAN);
// LOG.debug("RECEIVED: {}", GB.hexdump(message.array()));
final byte handle = message.get();
@ -111,7 +137,7 @@ public class CommunicatorV2 implements ICommunicator {
case CLOSE_ALL_RESP: //close all handles response
LOG.debug("Received close all handles response. Message: {}", message.array());
new TransactionBuilder("open GFDI")
.write(this.mSupport.getCharacteristic(UUID_CHARACTERISTIC_GARMIN_ML_GFDI_SEND), registerGFDI())
.write(characteristicSend, registerGFDI())
.queue(this.mSupport.getQueue());
break;
case UNK_RESP: //unknown response