CMF Buds 2a: Initial support

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/AbstractEarCoordinator.java

@@ -82,5 +82,11 @@ public abstract class AbstractEarCoordinator extends AbstractBLClassicDeviceCoor
 
     public abstract boolean incrementCounter();
 
-    public abstract boolean supportsLightAncAndTransparency();
+    public boolean supportsInEarDetection() {
+        return true;
+    }
+
+    public abstract boolean supportsLightAnc();
+
+    public abstract boolean supportsTransparency();
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/CmfBuds2Coordinator.java

@@ -37,7 +37,12 @@ public class CmfBuds2Coordinator extends AbstractEarCoordinator {
     }
 
     @Override
-    public boolean supportsLightAncAndTransparency() {
+    public boolean supportsLightAnc() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
         return true;
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/CmfBuds2aCoordinator.java

@@ -0,0 +1,58 @@
+/*  Copyright (C) 2026 José Rebelo
+
+    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 <https://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.devices.nothing;
+
+import java.util.regex.Pattern;
+
+import nodomain.freeyourgadget.gadgetbridge.R;
+
+public class CmfBuds2aCoordinator extends AbstractEarCoordinator {
+    @Override
+    public boolean isExperimental() {
+        return true;
+    }
+
+    @Override
+    protected Pattern getSupportedDeviceName() {
+        return Pattern.compile("^CMF Buds 2a$");
+    }
+
+    @Override
+    public int getDeviceNameResource() {
+        return R.string.devicetype_nothing_cmf_buds_2a;
+    }
+
+    @Override
+    public boolean incrementCounter() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsInEarDetection() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsLightAnc() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
+        return true;
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/CmfBudsPro2Coordinator.java

@@ -37,7 +37,12 @@ public class CmfBudsPro2Coordinator extends AbstractEarCoordinator {
     }
 
     @Override
-    public boolean supportsLightAncAndTransparency() {
+    public boolean supportsLightAnc() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
         return true;
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/Ear1Coordinator.java

@@ -38,7 +38,12 @@ public class Ear1Coordinator extends AbstractEarCoordinator {
     }
 
     @Override
-    public boolean supportsLightAncAndTransparency() {
+    public boolean supportsLightAnc() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
         return true;
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/Ear2Coordinator.java

@@ -37,7 +37,12 @@ public class Ear2Coordinator extends AbstractEarCoordinator {
     }
 
     @Override
-    public boolean supportsLightAncAndTransparency() {
+    public boolean supportsLightAnc() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
         return true;
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/EarACoordinator.java

@@ -37,7 +37,12 @@ public class EarACoordinator extends AbstractEarCoordinator {
     }
 
     @Override
-    public boolean supportsLightAncAndTransparency() {
+    public boolean supportsLightAnc() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
         return false;
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/EarSettingsCustomizer.java

@@ -52,7 +52,14 @@ public class EarSettingsCustomizer implements DeviceSpecificSettingsCustomizer {
     public void customizeSettings(final DeviceSpecificSettingsHandler handler, final Prefs prefs, final String rootKey) {
         final AbstractEarCoordinator earCoordinator = (AbstractEarCoordinator) handler.getDevice().getDeviceCoordinator();
 
-        if (!earCoordinator.supportsLightAncAndTransparency()) {
+        if (!earCoordinator.supportsInEarDetection()) {
+            final Preference inEarPreference = handler.findPreference(DeviceSettingsPreferenceConst.PREF_NOTHING_EAR1_INEAR);
+            if (inEarPreference != null) {
+                inEarPreference.setVisible(false);
+            }
+        }
+
+        if (!earCoordinator.supportsLightAnc() || !earCoordinator.supportsTransparency()) {
             // If light anc and transparency is not supported, remove the values from the preference
             final Preference audioModePref = handler.findPreference(DeviceSettingsPreferenceConst.PREF_NOTHING_EAR1_AUDIOMODE);
 
@@ -64,11 +71,15 @@ public class EarSettingsCustomizer implements DeviceSpecificSettingsCustomizer {
                 final List<CharSequence> entryValues = new ArrayList<>();
 
                 for (int i = 0; i < originalEntries.length; i++) {
-                    if ("anc".equals(originalEntryValues[i].toString()) || "off".equals(originalEntryValues[i].toString())) {
+                    if ("anclight".equals(originalEntryValues[i].toString()) && !earCoordinator.supportsLightAnc()) {
+                        continue;
+                    }
+                    if ("transparency".equals(originalEntryValues[i].toString()) && !earCoordinator.supportsTransparency()) {
+                        continue;
+                    }
                     entries.add(originalEntries[i]);
                     entryValues.add(originalEntryValues[i]);
                 }
-                }
 
                 ((ListPreference) audioModePref).setEntries(entries.toArray(new CharSequence[0]));
                 ((ListPreference) audioModePref).setEntryValues(entryValues.toArray(new CharSequence[0]));

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/nothing/EarStickCoordinator.java

@@ -37,7 +37,12 @@ public class EarStickCoordinator extends AbstractEarCoordinator {
     }
 
     @Override
-    public boolean supportsLightAncAndTransparency() {
+    public boolean supportsLightAnc() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsTransparency() {
         return false;
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java

@@ -353,6 +353,7 @@ import nodomain.freeyourgadget.gadgetbridge.devices.moyoung.ViranC29Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.moyoung.ZL02DCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.no1f1.No1F1Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.nothing.CmfBuds2Coordinator;
+import nodomain.freeyourgadget.gadgetbridge.devices.nothing.CmfBuds2aCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.nothing.CmfBudsPro2Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.nothing.Ear1Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.nothing.Ear2Coordinator;
@@ -761,6 +762,7 @@ public enum DeviceType {
     NOTHING_EAR_A(EarACoordinator.class),
     NOTHING_EAR_STICK(EarStickCoordinator.class),
     NOTHING_CMF_BUDS_2(CmfBuds2Coordinator.class),
+    NOTHING_CMF_BUDS_2A(CmfBuds2aCoordinator.class),
     NOTHING_CMF_BUDS_PRO_2(CmfBudsPro2Coordinator.class),
     NOTHING_CMF_WATCH_PRO(CmfWatchProCoordinator.class),
     NOTHING_CMF_WATCH_PRO_2(CmfWatchPro2Coordinator.class),

app/src/main/res/values/strings.xml

@@ -3150,6 +3150,7 @@
     <string name="devicetype_nothing_ear_a" translatable="false">Nothing Ear (a)</string>
     <string name="devicetype_nothingearstick" translatable="false">Nothing Ear (Stick)</string>
     <string name="devicetype_nothing_cmf_buds_2" translatable="false">CMF Buds 2</string>
+    <string name="devicetype_nothing_cmf_buds_2a" translatable="false">CMF Buds 2a</string>
     <string name="devicetype_nothing_cmf_buds_pro_2" translatable="false">CMF Buds Pro 2</string>
     <string name="devicetype_nothing_cmf_watch_pro" translatable="false">CMF Watch Pro</string>
     <string name="devicetype_nothing_cmf_watch_pro_2" translatable="false">CMF Watch Pro 2</string>

app/src/test/java/nodomain/freeyourgadget/gadgetbridge/devices/AbstractDeviceCoordinatorTest.java

@@ -30,6 +30,7 @@ public class AbstractDeviceCoordinatorTest extends TestBase {
             put("Xiaomi Band 9 Active AB01", DeviceType.MIBAND9ACTIVE);
             put("vívoactive 6", DeviceType.GARMIN_VIVOACTIVE_6);
             put("CMF Buds 2", DeviceType.NOTHING_CMF_BUDS_2); // #5579
+            put("CMF Buds 2a", DeviceType.NOTHING_CMF_BUDS_2A); // #6028
             put("HC96", DeviceType.HC96);
             put("P8", DeviceType.WASPOS); // from wasp-os source
             put("P8DFU", DeviceType.WASPOS); // from wasp-os source