2023-05-17 22:54:29 +02:00
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/* Copyright (C) 2023 José Rebelo
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This file is part of Gadgetbridge.
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Gadgetbridge is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Gadgetbridge is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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package nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.GregorianCalendar;
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2023-07-22 21:27:20 +02:00
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import nodomain.freeyourgadget.gadgetbridge.R;
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2023-05-17 22:54:29 +02:00
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import nodomain.freeyourgadget.gadgetbridge.devices.huami.HuamiService;
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import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.HuamiSupport;
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import nodomain.freeyourgadget.gadgetbridge.util.GB;
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/**
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* An operation that fetches SPO2 data for sleep measurements (this requires sleep breathing quality enabled).
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*/
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public class FetchSpo2SleepOperation extends AbstractRepeatingFetchOperation {
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private static final Logger LOG = LoggerFactory.getLogger(FetchSpo2SleepOperation.class);
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public FetchSpo2SleepOperation(final HuamiSupport support) {
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super(support, HuamiService.COMMAND_ACTIVITY_DATA_TYPE_SPO2_SLEEP, "spo2 sleep data");
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}
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2023-07-22 21:27:20 +02:00
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@Override
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protected String taskDescription() {
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return getContext().getString(R.string.busy_task_fetch_spo2_data);
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}
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2023-05-17 22:54:29 +02:00
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@Override
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protected boolean handleActivityData(final GregorianCalendar timestamp, final byte[] bytes) {
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if ((bytes.length - 1) % 30 != 0) {
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LOG.error("Unexpected length for sleep spo2 data {}, not divisible by 30", bytes.length);
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return false;
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}
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final ByteBuffer buf = ByteBuffer.wrap(bytes).order(ByteOrder.LITTLE_ENDIAN);
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final int version = buf.get() & 0xff;
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if (version != 2) {
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LOG.error("Unknown sleep spo2 data version {}", version);
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return false;
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}
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while (buf.position() < bytes.length) {
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final long timestampSeconds = buf.getInt();
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// this doesn't match the spo2 value returned by FetchSpo2NormalOperation.. it's often 100 when the other is 99, but not always
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final int spo2 = buf.get() & 0xff;
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// Not sure what the nextg 25 bytes mean:
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// 40646464646464636363636363000000000000400000000000
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// an unknown byte, always 0x40 (64)
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// 6 bytes with max values?
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// 6 bytes with min values?
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// 12 unknown bytes, always ending with 4 zeroes?
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final byte[] unknown = new byte[25];
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buf.get(unknown);
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timestamp.setTimeInMillis(timestampSeconds * 1000L);
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2023-05-21 00:34:10 +02:00
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LOG.debug("SPO2 (sleep) at {}: {} unknown={}", timestamp.getTime(), spo2, GB.hexdump(unknown));
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2023-05-17 22:54:29 +02:00
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// TODO save
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}
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return true;
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}
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@Override
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protected String getLastSyncTimeKey() {
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return "lastSpo2sleepTimeMillis";
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}
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}
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