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Pebble 2: use requestMTU() on Android 5+ instead of characteristics write. 

This actually fixes MTU problems with older Pebbles (Time, OG)
This commit is contained in:
Andreas Shimokawa 2016-11-18 23:45:05 +01:00
parent 4dc085de57
commit ddfab1cdae
1 changed files with 9 additions and 4 deletions
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13
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/ble/PebbleGATTClient.java
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@ -13,6 +13,7 @@ import org.slf4j.LoggerFactory;
import java.lang.reflect.Method; import java.lang.reflect.Method;
import java.util.UUID; import java.util.UUID;
import nodomain.freeyourgadget.gadgetbridge.GBApplication;
import nodomain.freeyourgadget.gadgetbridge.util.GB; import nodomain.freeyourgadget.gadgetbridge.util.GB;
import static android.bluetooth.BluetoothGattCharacteristic.FORMAT_UINT16; import static android.bluetooth.BluetoothGattCharacteristic.FORMAT_UINT16;
@ -211,10 +212,14 @@ class PebbleGATTClient extends BluetoothGattCallback {
private void setMTU(BluetoothGatt gatt) { private void setMTU(BluetoothGatt gatt) {
LOG.info("setting MTU"); LOG.info("setting MTU");
BluetoothGattCharacteristic characteristic = gatt.getService(SERVICE_UUID).getCharacteristic(MTU_CHARACTERISTIC); if (GBApplication.isRunningLollipopOrLater()) {
BluetoothGattDescriptor descriptor = characteristic.getDescriptor(CHARACTERISTIC_CONFIGURATION_DESCRIPTOR); gatt.requestMtu(339);
descriptor.setValue(new byte[]{0x0b, 0x01}); // unknown } else {
gatt.writeCharacteristic(characteristic); BluetoothGattCharacteristic characteristic = gatt.getService(SERVICE_UUID).getCharacteristic(MTU_CHARACTERISTIC);
BluetoothGattDescriptor descriptor = characteristic.getDescriptor(CHARACTERISTIC_CONFIGURATION_DESCRIPTOR);
descriptor.setValue(new byte[]{0x0b, 0x01}); // unknown
gatt.writeCharacteristic(characteristic);
}
} }
public void close() { public void close() {