/* * Copyright (c) 2018, Nordic Semiconductor * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package no.nordicsemi.android.ble.common.callback.glucose; import android.bluetooth.BluetoothDevice; import android.os.Parcel; import androidx.annotation.NonNull; import java.util.Calendar; import no.nordicsemi.android.ble.callback.profile.ProfileReadResponse; import no.nordicsemi.android.ble.common.callback.DateTimeDataCallback; import no.nordicsemi.android.ble.common.profile.glucose.GlucoseMeasurementCallback; import no.nordicsemi.android.ble.data.Data; /** * Data callback that parses value into Glucose Measurement data. * If the value received do not match required syntax * {@link #onInvalidDataReceived(BluetoothDevice, Data)} callback will be called. * will be called. * See: https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.glucose_measurement.xml */ @SuppressWarnings({"ConstantConditions", "WeakerAccess"}) public abstract class GlucoseMeasurementDataCallback extends ProfileReadResponse implements GlucoseMeasurementCallback { public GlucoseMeasurementDataCallback() { // empty } protected GlucoseMeasurementDataCallback(final Parcel in) { super(in); } @Override public void onDataReceived(@NonNull final BluetoothDevice device, @NonNull final Data data) { super.onDataReceived(device, data); if (data.size() < 10) { onInvalidDataReceived(device, data); return; } int offset = 0; final int flags = data.getIntValue(Data.FORMAT_UINT8, offset++); final boolean timeOffsetPresent = (flags & 0x01) != 0; final boolean glucoseDataPresent = (flags & 0x02) != 0; final boolean unitMolL = (flags & 0x04) != 0; final boolean sensorStatusAnnunciationPresent = (flags & 0x08) != 0; final boolean contextInformationFollows = (flags & 0x10) != 0; if (data.size() < 10 + (timeOffsetPresent ? 2 : 0) + (glucoseDataPresent ? 3 : 0) + (sensorStatusAnnunciationPresent ? 2 : 0)) { onInvalidDataReceived(device, data); return; } // Required fields final int sequenceNumber = data.getIntValue(Data.FORMAT_UINT16, offset); offset += 2; final Calendar baseTime = DateTimeDataCallback.readDateTime(data, 3); offset += 7; if (baseTime == null) { onInvalidDataReceived(device, data); return; } // Optional fields if (timeOffsetPresent) { final int timeOffset = data.getIntValue(Data.FORMAT_SINT16, offset); offset += 2; baseTime.add(Calendar.MINUTE, timeOffset); } Float glucoseConcentration = null; Integer unit = null; Integer type = null; Integer sampleLocation = null; if (glucoseDataPresent) { glucoseConcentration = data.getFloatValue(Data.FORMAT_SFLOAT, offset); final int typeAndSampleLocation = data.getIntValue(Data.FORMAT_UINT8, offset + 2); offset += 3; type = typeAndSampleLocation & 0x0F; sampleLocation = typeAndSampleLocation >> 4; unit = unitMolL ? UNIT_mol_L : UNIT_kg_L; } GlucoseStatus status = null; if (sensorStatusAnnunciationPresent) { final int value = data.getIntValue(Data.FORMAT_UINT16, offset); // offset += 2; status = new GlucoseStatus(value); } onGlucoseMeasurementReceived(device, sequenceNumber, baseTime /* with offset */, glucoseConcentration, unit, type, sampleLocation, status, contextInformationFollows); } }