/* * 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.bps; 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.bp.IntermediateCuffPressureCallback; import no.nordicsemi.android.ble.data.Data; /** * Data callback that parses value into Intermediate Cuff Pressure data. * If the value received do not match required syntax * {@link #onInvalidDataReceived(BluetoothDevice, Data)} callback will be called. * See: https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.intermediate_cuff_pressure.xml */ @SuppressWarnings({"ConstantConditions", "WeakerAccess"}) public abstract class IntermediateCuffPressureDataCallback extends ProfileReadResponse implements IntermediateCuffPressureCallback { public IntermediateCuffPressureDataCallback() { // empty } protected IntermediateCuffPressureDataCallback(final Parcel in) { super(in); } @Override public void onDataReceived(@NonNull final BluetoothDevice device, @NonNull final Data data) { super.onDataReceived(device, data); if (data.size() < 7) { onInvalidDataReceived(device, data); return; } // First byte: flags int offset = 0; final int flags = data.getIntValue(Data.FORMAT_UINT8, offset++); // See UNIT_* for unit options final int unit = (flags & 0x01) == UNIT_mmHg ? UNIT_mmHg : UNIT_kPa; final boolean timestampPresent = (flags & 0x02) != 0; final boolean pulseRatePresent = (flags & 0x04) != 0; final boolean userIdPresent = (flags & 0x08) != 0; final boolean measurementStatusPresent = (flags & 0x10) != 0; if (data.size() < 7 + (timestampPresent ? 7 : 0) + (pulseRatePresent ? 2 : 0) + (userIdPresent ? 1 : 0) + (measurementStatusPresent ? 2 : 0)) { onInvalidDataReceived(device, data); return; } // Following bytes - systolic, diastolic and mean arterial pressure final float cuffPressure = data.getFloatValue(Data.FORMAT_SFLOAT, offset); // final float ignored_1 = data.getFloatValue(Data.FORMAT_SFLOAT, offset + 2); // final float ignored_2 = data.getFloatValue(Data.FORMAT_SFLOAT, offset + 4); offset += 6; // Parse timestamp if present Calendar calendar = null; if (timestampPresent) { calendar = DateTimeDataCallback.readDateTime(data, offset); offset += 7; } // Parse pulse rate if present Float pulseRate = null; if (pulseRatePresent) { pulseRate = data.getFloatValue(Data.FORMAT_SFLOAT, offset); offset += 2; } // Read user id if present Integer userId = null; if (userIdPresent) { userId = data.getIntValue(Data.FORMAT_UINT8, offset); offset += 1; } // Read measurement status if present BPMStatus status = null; if (measurementStatusPresent) { final int measurementStatus = data.getIntValue(Data.FORMAT_UINT16, offset); // offset += 2; status = new BPMStatus(measurementStatus); } onIntermediateCuffPressureReceived(device, cuffPressure, unit, pulseRate, userId, status, calendar); } }