59 lines
2.0 KiB
Java
59 lines
2.0 KiB
Java
package nodomain.freeyourgadget.gadgetbridge.service.btle.actions;
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import android.bluetooth.BluetoothGatt;
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import android.bluetooth.BluetoothGattCallback;
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import android.bluetooth.BluetoothGattCharacteristic;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import nodomain.freeyourgadget.gadgetbridge.Logging;
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import nodomain.freeyourgadget.gadgetbridge.devices.miband.MiBandConst;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.BtLEAction;
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/**
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* Invokes a write operation on a given GATT characteristic.
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* The result status will be made available asynchronously through the
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* {@link BluetoothGattCallback}
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*/
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public class WriteAction extends BtLEAction {
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private static final Logger LOG = LoggerFactory.getLogger(WriteAction.class);
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private final byte[] value;
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public WriteAction(BluetoothGattCharacteristic characteristic, byte[] value) {
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super(characteristic);
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this.value = value;
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}
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@Override
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public boolean run(BluetoothGatt gatt) {
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BluetoothGattCharacteristic characteristic = getCharacteristic();
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int properties = characteristic.getProperties();
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//TODO: expectsResult should return false if PROPERTY_WRITE_NO_RESPONSE is true, but this leads to timing issues
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if ((properties & BluetoothGattCharacteristic.PROPERTY_WRITE) > 0 || ((properties & BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE) > 0)) {
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return writeValue(gatt, characteristic, value);
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}
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return false;
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}
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protected boolean writeValue(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, byte[] value) {
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if (LOG.isDebugEnabled()) {
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LOG.debug("writing to characteristic: " + characteristic.getUuid() + ": " + Logging.formatBytes(value));
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}
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if (characteristic.setValue(value)) {
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return gatt.writeCharacteristic(characteristic);
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}
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return false;
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}
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protected final byte[] getValue() {
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return value;
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}
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@Override
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public boolean expectsResult() {
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return true;
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}
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}
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