Examples with BluetoothBytesParser com.welie.blessed.BluetoothBytesParser used on opensource projects

Example 21 with BluetoothBytesParser

use of com.welie.blessed.BluetoothBytesParser in project openScale by oliexdev.

the class BluetoothStandardWeightProfile method bodyCompositionMeasurementToScaleMeasurement.

protected ScaleMeasurement bodyCompositionMeasurementToScaleMeasurement(byte[] value) {
    String prefix = "bodyCompositionMeasurementToScaleMeasurement() ";
    Timber.d(String.format(prefix + "value: [%s]", byteInHex(value)));
    BluetoothBytesParser parser = new BluetoothBytesParser(value);
    final int flags = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16);
    boolean isKg = (flags & 0x0001) == 0;
    float massMultiplier = (float) (isKg ? 0.005 : 0.01);
    boolean timestampPresent = (flags & 0x0002) > 0;
    boolean userIDPresent = (flags & 0x0004) > 0;
    boolean bmrPresent = (flags & 0x0008) > 0;
    boolean musclePercentagePresent = (flags & 0x0010) > 0;
    boolean muscleMassPresent = (flags & 0x0020) > 0;
    boolean fatFreeMassPresent = (flags & 0x0040) > 0;
    boolean softLeanMassPresent = (flags & 0x0080) > 0;
    boolean bodyWaterMassPresent = (flags & 0x0100) > 0;
    boolean impedancePresent = (flags & 0x0200) > 0;
    boolean weightPresent = (flags & 0x0400) > 0;
    boolean heightPresent = (flags & 0x0800) > 0;
    boolean multiPacketMeasurement = (flags & 0x1000) > 0;
    Timber.d(String.format(prefix + "flags: 0x%02x ", flags) + "[" + (isKg ? "SI" : "Imperial") + (timestampPresent ? ", timestamp" : "") + (userIDPresent ? ", userID" : "") + (bmrPresent ? ", bmr" : "") + (musclePercentagePresent ? ", musclePercentage" : "") + (muscleMassPresent ? ", muscleMass" : "") + (fatFreeMassPresent ? ", fatFreeMass" : "") + (softLeanMassPresent ? ", softLeanMass" : "") + (bodyWaterMassPresent ? ", bodyWaterMass" : "") + (impedancePresent ? ", impedance" : "") + (weightPresent ? ", weight" : "") + (heightPresent ? ", height" : "") + (multiPacketMeasurement ? ", multiPacketMeasurement" : "") + "], " + String.format("reserved flags: 0x%04x ", flags & 0xe000));
    ScaleMeasurement scaleMeasurement = new ScaleMeasurement();
    float bodyFatPercentage = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * 0.1f;
    Timber.d(prefix + "bodyFatPercentage: " + bodyFatPercentage);
    scaleMeasurement.setFat(bodyFatPercentage);
    // Read timestamp if present
    if (timestampPresent) {
        Date timestamp = parser.getDateTime();
        Timber.d(prefix + "timestamp: " + timestamp.toString());
        scaleMeasurement.setDateTime(timestamp);
    }
    // Read userID if present
    if (userIDPresent) {
        int scaleUserIndex = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT8);
        int userID = getUserIdFromScaleIndex(scaleUserIndex);
        Timber.d(String.format(prefix + "scale user index: %d (app user id: %d)", scaleUserIndex, userID));
        if (userID != -1) {
            scaleMeasurement.setUserId(userID);
        }
    }
    // Read bmr if present
    if (bmrPresent) {
        int bmrInJoules = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16);
        int bmrInKcal = Math.round(((bmrInJoules / 4.1868f) * 10.0f) / 10.0f);
        Timber.d(prefix + "bmrInJoules: " + bmrInJoules + " bmrInKcal: " + bmrInKcal);
    }
    // Read musclePercentage if present
    if (musclePercentagePresent) {
        float musclePercentage = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * 0.1f;
        Timber.d(prefix + "musclePercentage: " + musclePercentage);
        scaleMeasurement.setMuscle(musclePercentage);
    }
    // Read muscleMass if present
    if (muscleMassPresent) {
        float muscleMass = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * massMultiplier;
        Timber.d(prefix + "muscleMass: " + muscleMass);
    }
    // Read fatFreeMassPresent if present
    if (fatFreeMassPresent) {
        float fatFreeMass = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * massMultiplier;
        Timber.d(prefix + "fatFreeMass: " + fatFreeMass);
    }
    // Read softleanMass if present
    float softLeanMass = 0.0f;
    if (softLeanMassPresent) {
        softLeanMass = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * massMultiplier;
        Timber.d(prefix + "softLeanMass: " + softLeanMass);
    }
    // Read bodyWaterMass if present
    if (bodyWaterMassPresent) {
        float bodyWaterMass = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * massMultiplier;
        Timber.d(prefix + "bodyWaterMass: " + bodyWaterMass);
        scaleMeasurement.setWater(bodyWaterMass);
    }
    // Read impedance if present
    if (impedancePresent) {
        float impedance = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * 0.1f;
        Timber.d(prefix + "impedance: " + impedance);
    }
    // Read weight if present
    float weightValue = 0.0f;
    if (weightPresent) {
        weightValue = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16) * massMultiplier;
        Timber.d(prefix + "weightValue: " + weightValue);
        scaleMeasurement.setWeight(weightValue);
    } else {
        if (previousMeasurement != null) {
            weightValue = previousMeasurement.getWeight();
            if (weightValue > 0) {
                weightPresent = true;
            }
        }
    }
    // calculate lean body mass and bone mass
    if (weightPresent && softLeanMassPresent) {
        float fatMass = weightValue * bodyFatPercentage / 100.0f;
        float leanBodyMass = weightValue - fatMass;
        float boneMass = leanBodyMass - softLeanMass;
        scaleMeasurement.setLbm(leanBodyMass);
        scaleMeasurement.setBone(boneMass);
    }
    // Read height if present
    if (heightPresent) {
        float heightValue = parser.getIntValue(BluetoothBytesParser.FORMAT_UINT16);
        Timber.d(prefix + "heightValue: " + heightValue);
    }
    if (multiPacketMeasurement) {
        Timber.e(prefix + "multiPacketMeasurement not supported!");
    }
    Timber.d(String.format("Got body composition: %s", byteInHex(value)));
    return scaleMeasurement;
}

Example 22 with BluetoothBytesParser

use of com.welie.blessed.BluetoothBytesParser in project openScale by oliexdev.

the class BluetoothStandardWeightProfile method registerUser.

protected void registerUser(int consentCode) {
    BluetoothBytesParser parser = new BluetoothBytesParser(new byte[] { 0, 0, 0 });
    parser.setIntValue(UDS_CP_REGISTER_NEW_USER, FORMAT_UINT8, 0);
    parser.setIntValue(consentCode, FORMAT_UINT16, 1);
    Timber.d(String.format("registerUser consentCode: %d", consentCode));
    writeBytes(BluetoothGattUuid.SERVICE_USER_DATA, BluetoothGattUuid.CHARACTERISTIC_USER_CONTROL_POINT, parser.getValue());
}