public void removeNotify(
UUID serviceUUID, UUID characteristicUUID, Callback success, Callback fail) {
Log.d(LOG_TAG, "removeNotify");
if (gatt == null) {
fail.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findNotifyCharacteristic(service, characteristicUUID);
// String key = generateHashKey(serviceUUID, characteristic);
if (characteristic != null) {
if (gatt.setCharacteristicNotification(characteristic, false)) {
success.invoke();
} else {
// TODO we can probably ignore and return success anyway since we removed the notification
// callback
fail.invoke("Failed to stop notification for " + characteristicUUID);
}
} else {
fail.invoke("Characteristic " + characteristicUUID + " not found");
}
}
public void read(
UUID serviceUUID, UUID characteristicUUID, Callback successCallback, Callback failCallback) {
if (gatt == null) {
failCallback.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findReadableCharacteristic(service, characteristicUUID);
if (characteristic == null) {
failCallback.invoke("Characteristic " + characteristicUUID + " not found.");
} else {
readCallback = successCallback;
readFailCallback = failCallback;
if (!gatt.readCharacteristic(characteristic)) {
readCallback = null;
failCallback.invoke("Read failed");
}
}
}
public void write(
UUID serviceUUID,
UUID characteristicUUID,
byte[] data,
Callback successCallback,
Callback failCallback,
int writeType) {
Log.d(LOG_TAG, "write interno peripheral");
if (gatt == null) {
failCallback.invoke("BluetoothGatt is null");
} else {
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findWritableCharacteristic(service, characteristicUUID, writeType);
characteristic.setWriteType(writeType);
if (characteristic == null) {
failCallback.invoke("Characteristic " + characteristicUUID + " not found.");
} else {
if (writeQueue.size() > 0) {
failCallback.invoke("Scrittura con byte ancora in coda");
}
if (writeCallback != null) {
failCallback.invoke("Altra scrittura in corso");
}
if (writeQueue.size() == 0 && writeCallback == null) {
if (BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT == writeType) {
writeCallback = successCallback;
writeFailCallback = failCallback;
} else successCallback.invoke();
if (data.length > 20) {
int dataLength = data.length;
int count = 0;
byte[] firstMessage = null;
while (count < dataLength && (dataLength - count > 20)) {
if (count == 0) {
firstMessage = Arrays.copyOfRange(data, count, count + 20);
} else {
byte[] splitMessage = Arrays.copyOfRange(data, count, count + 20);
writeQueue.add(splitMessage);
}
count += 20;
}
if (count < dataLength) {
// Rimangono byte in coda
byte[] splitMessage = Arrays.copyOfRange(data, count, data.length);
Log.d(LOG_TAG, "Lunghezza ultimo messaggio: " + splitMessage.length);
writeQueue.add(splitMessage);
}
Log.d(LOG_TAG, "Messaggi in coda: " + writeQueue.size());
doWrite(characteristic, firstMessage);
} else {
characteristic.setValue(data);
if (gatt.writeCharacteristic(characteristic)) {
Log.d(LOG_TAG, "write completato");
} else {
writeCallback = null;
failCallback.invoke("Write failed");
}
}
}
}
}
}
// This seems way too complicated
public void registerNotify(
UUID serviceUUID, UUID characteristicUUID, Callback success, Callback fail) {
Log.d(LOG_TAG, "registerNotify");
if (gatt == null) {
fail.invoke("BluetoothGatt is null");
return;
}
BluetoothGattService service = gatt.getService(serviceUUID);
BluetoothGattCharacteristic characteristic =
findNotifyCharacteristic(service, characteristicUUID);
// String key = generateHashKey(serviceUUID, characteristic);
if (characteristic != null) {
Log.d(LOG_TAG, "characteristic ok");
if (gatt.setCharacteristicNotification(characteristic, true)) {
BluetoothGattDescriptor descriptor =
characteristic.getDescriptor(UUID.fromString(CHARACTERISTIC_NOTIFICATION_CONFIG));
if (descriptor != null) {
Log.d(LOG_TAG, "trovato descriptor");
// prefer notify over indicate
if ((characteristic.getProperties() & BluetoothGattCharacteristic.PROPERTY_NOTIFY) != 0) {
Log.d(LOG_TAG, "Characteristic " + characteristicUUID + " set NOTIFY");
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
} else if ((characteristic.getProperties()
& BluetoothGattCharacteristic.PROPERTY_INDICATE)
!= 0) {
Log.d(LOG_TAG, "Characteristic " + characteristicUUID + " set INDICATE");
descriptor.setValue(BluetoothGattDescriptor.ENABLE_INDICATION_VALUE);
} else {
Log.d(
LOG_TAG,
"Characteristic "
+ characteristicUUID
+ " does not have NOTIFY or INDICATE property set");
}
if (gatt.writeDescriptor(descriptor)) {
// Tutto ok
Log.d(LOG_TAG, "registerNotify completato");
success.invoke();
} else {
fail.invoke(
"Failed to set client characteristic notification for " + characteristicUUID);
}
} else {
fail.invoke("Set notification failed for " + characteristicUUID);
}
} else {
fail.invoke("Failed to register notification for " + characteristicUUID);
}
} else {
fail.invoke("Characteristic " + characteristicUUID + " not found");
}
}