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Zepp OS: Parse SPO2 sleep data

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Matched against the Zepp spo2 database
This commit is contained in:
José Rebelo 2023-09-10 16:58:28 +01:00
parent 1ac6983cd3
commit 43d02b9661
1 changed files with 19 additions and 10 deletions
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29
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/operations/FetchSpo2SleepOperation.java
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@ -63,19 +63,28 @@ public class FetchSpo2SleepOperation extends AbstractRepeatingFetchOperation {
// this doesn't match the spo2 value returned by FetchSpo2NormalOperation.. it's often 100 when the other is 99, but not always
final int spo2 = buf.get() & 0xff;
// Not sure what the nextg 25 bytes mean:
// 40646464646464636363636363000000000000400000000000
// an unknown byte, always 0x40 (64)
// 6 bytes with max values?
// 6 bytes with min values?
// 12 unknown bytes, always ending with 4 zeroes?
final byte[] unknown = new byte[25];
buf.get(unknown);
final int duration = buf.get() & 0xff;
final byte[] spo2High = new byte[6];
final byte[] spo2Low = new byte[6];
final byte[] signalQuality = new byte[8];
final byte[] extend = new byte[4];
buf.get(spo2High);
buf.get(spo2Low);
buf.get(signalQuality);
buf.get(extend);
timestamp.setTimeInMillis(timestampSeconds * 1000L);
LOG.debug("SPO2 (sleep) at {}: {} unknown={}", timestamp.getTime(), spo2, GB.hexdump(unknown));
LOG.debug(
"SPO2 (sleep) at {}: {} duration={} high={} low={} signalQuality={}, extend={}",
timestamp.getTime(),
spo2,
duration,
spo2High,
spo2Low,
signalQuality,
extend
);
// TODO save
}