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https://codeberg.org/Freeyourgadget/Gadgetbridge
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Pebble 2/LE: Add setting to limit the MTU (for debugging broken BLE stacks)
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@ -10,6 +10,8 @@ import java.io.IOException;
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import java.io.PipedInputStream;
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import java.io.PipedOutputStream;
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import nodomain.freeyourgadget.gadgetbridge.GBApplication;
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public class PebbleLESupport {
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private static final Logger LOG = LoggerFactory.getLogger(PebbleLESupport.class);
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private final BluetoothDevice mBtDevice;
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@ -19,6 +21,7 @@ public class PebbleLESupport {
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private PipedInputStream mPipedInputStream;
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private PipedOutputStream mPipedOutputStream;
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private int mMTU = 20;
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private int mMTULimit = Integer.MAX_VALUE;
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boolean mIsConnected = false;
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public PebbleLESupport(Context context, final BluetoothDevice btDevice, PipedInputStream pipedInputStream, PipedOutputStream pipedOutputStream) throws IOException {
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@ -31,6 +34,9 @@ public class PebbleLESupport {
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} catch (IOException e) {
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LOG.warn("could not connect input stream");
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}
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mMTULimit = GBApplication.getPrefs().getInt("pebble_mtu_limit", 512);
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mMTULimit = Math.max(mMTULimit, 20);
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mMTULimit = Math.min(mMTULimit, 512);
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mPebbleGATTServer = new PebbleGATTServer(this, context, mBtDevice);
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if (mPebbleGATTServer.initialize()) {
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@ -99,7 +105,7 @@ public class PebbleLESupport {
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}
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void setMTU(int mtu) {
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mMTU = mtu;
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mMTU = Math.min(mtu, mMTULimit);
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}
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private class PipeReader extends Thread {
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@ -120,6 +120,8 @@
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<string name="pref_summary_pebble_forceuntested">Enable features that are untested. ENABLE ONLY IF YOU KNOW WHAT YOU ARE DOING!</string>
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<string name="pref_title_pebble_forcele">Always prefer BLE</string>
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<string name="pref_summary_pebble_forcele">Use experimental Pebble LE support for all Pebbles instead of BT classic, requires paring a "Pebble LE" after non LE had been connected once</string>
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<string name="pref_title_pebble_mtu_limit">Pebble 2/LE GATT MTU limit</string>
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<string name="pref_summary_pebble_mtu_limit">If your Pebble 2/Pebble LE does not work as expected, try this setting to limit the MTU (valid range 20–512)</string>
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<string name="pref_title_pebble_enable_applogs">Enable Watch App Logging</string>
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<string name="pref_summary_pebble_enable_applogs">Will cause logs from watch apps to be logged by Gadgetbridge (requires reconnect)</string>
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@ -341,6 +341,13 @@
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android:key="pebble_force_le"
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android:summary="@string/pref_summary_pebble_forcele"
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android:title="@string/pref_title_pebble_forcele" />
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<EditTextPreference
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android:inputType="number"
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android:key="pebble_mtu_limit"
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android:maxLength="3"
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android:defaultValue="512"
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android:title="@string/pref_title_pebble_mtu_limit"
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android:summary="@string/pref_summary_pebble_mtu_limit" />
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<CheckBoxPreference
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android:defaultValue="false"
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android:key="pebble_enable_applogs"
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