Java tutorial
/* Copyright (C) 2017 Daniele Gobbetti, protomors This file is part of Gadgetbridge. Gadgetbridge is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Gadgetbridge is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package nodomain.freeyourgadget.gadgetbridge.service.devices.no1f1; import android.bluetooth.BluetoothGatt; import android.bluetooth.BluetoothGattCharacteristic; import android.net.Uri; import android.text.format.DateFormat; import android.widget.Toast; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.GregorianCalendar; import java.util.List; import java.util.UUID; import nodomain.freeyourgadget.gadgetbridge.GBApplication; import nodomain.freeyourgadget.gadgetbridge.R; import nodomain.freeyourgadget.gadgetbridge.activities.SettingsActivity; import nodomain.freeyourgadget.gadgetbridge.database.DBHandler; import nodomain.freeyourgadget.gadgetbridge.database.DBHelper; import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventBatteryInfo; import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventVersionInfo; import nodomain.freeyourgadget.gadgetbridge.devices.no1f1.No1F1Constants; import nodomain.freeyourgadget.gadgetbridge.devices.no1f1.No1F1SampleProvider; import nodomain.freeyourgadget.gadgetbridge.entities.No1F1ActivitySample; import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice; import nodomain.freeyourgadget.gadgetbridge.model.ActivityKind; import nodomain.freeyourgadget.gadgetbridge.model.ActivityUser; import nodomain.freeyourgadget.gadgetbridge.model.Alarm; import nodomain.freeyourgadget.gadgetbridge.model.CalendarEventSpec; import nodomain.freeyourgadget.gadgetbridge.model.CallSpec; import nodomain.freeyourgadget.gadgetbridge.model.CannedMessagesSpec; import nodomain.freeyourgadget.gadgetbridge.model.MusicSpec; import nodomain.freeyourgadget.gadgetbridge.model.MusicStateSpec; import nodomain.freeyourgadget.gadgetbridge.model.NotificationSpec; import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec; import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEDeviceSupport; import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder; import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceBusyAction; import nodomain.freeyourgadget.gadgetbridge.util.GB; import static org.apache.commons.lang3.math.NumberUtils.min; public class No1F1Support extends AbstractBTLEDeviceSupport { private static final Logger LOG = LoggerFactory.getLogger(No1F1Support.class); private final GBDeviceEventVersionInfo versionCmd = new GBDeviceEventVersionInfo(); private final GBDeviceEventBatteryInfo batteryCmd = new GBDeviceEventBatteryInfo(); public BluetoothGattCharacteristic ctrlCharacteristic = null; public BluetoothGattCharacteristic measureCharacteristic = null; private List<No1F1ActivitySample> samples = new ArrayList<>(); private byte crc = 0; private int firstTimestamp = 0; public No1F1Support() { super(LOG); addSupportedService(No1F1Constants.UUID_SERVICE_NO1); } @Override protected TransactionBuilder initializeDevice(TransactionBuilder builder) { LOG.info("Initializing"); gbDevice.setState(GBDevice.State.INITIALIZING); gbDevice.sendDeviceUpdateIntent(getContext()); measureCharacteristic = getCharacteristic(No1F1Constants.UUID_CHARACTERISTIC_MEASURE); ctrlCharacteristic = getCharacteristic(No1F1Constants.UUID_CHARACTERISTIC_CONTROL); builder.setGattCallback(this); builder.notify(measureCharacteristic, true); sendSettings(builder); builder.write(ctrlCharacteristic, new byte[] { No1F1Constants.CMD_FIRMWARE_VERSION }); builder.write(ctrlCharacteristic, new byte[] { No1F1Constants.CMD_BATTERY }); gbDevice.setState(GBDevice.State.INITIALIZED); gbDevice.sendDeviceUpdateIntent(getContext()); LOG.info("Initialization Done"); return builder; } @Override public boolean onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) { if (super.onCharacteristicChanged(gatt, characteristic)) { return true; } UUID characteristicUUID = characteristic.getUuid(); byte[] data = characteristic.getValue(); if (data.length == 0) return true; switch (data[0]) { case No1F1Constants.CMD_FIRMWARE_VERSION: versionCmd.fwVersion = new String(Arrays.copyOfRange(data, 1, data.length)); handleGBDeviceEvent(versionCmd); LOG.info("Firmware version is: " + versionCmd.fwVersion); return true; case No1F1Constants.CMD_BATTERY: batteryCmd.level = data[1]; handleGBDeviceEvent(batteryCmd); LOG.info("Battery level is: " + data[1]); return true; case No1F1Constants.CMD_DATETIME: LOG.info("Time is set to: " + (data[1] * 256 + ((int) data[2] & 0xff)) + "-" + data[3] + "-" + data[4] + " " + data[5] + ":" + data[6] + ":" + data[7]); return true; case No1F1Constants.CMD_USER_DATA: LOG.info("User data updated"); return true; case No1F1Constants.CMD_FETCH_STEPS: case No1F1Constants.CMD_FETCH_SLEEP: case No1F1Constants.CMD_FETCH_HEARTRATE: handleActivityData(data); return true; case No1F1Constants.CMD_REALTIME_HEARTRATE: handleRealtimeHeartRateData(data); return true; case No1F1Constants.CMD_NOTIFICATION: case No1F1Constants.CMD_ICON: case No1F1Constants.CMD_DEVICE_SETTINGS: case No1F1Constants.CMD_DISPLAY_SETTINGS: return true; default: LOG.warn("Unhandled characteristic change: " + characteristicUUID + " code: " + Arrays.toString(data)); return true; } } @Override public void onNotification(NotificationSpec notificationSpec) { switch (notificationSpec.type) { case GENERIC_SMS: showNotification(No1F1Constants.NOTIFICATION_SMS, notificationSpec.phoneNumber, notificationSpec.body); setVibration(1, 3); break; default: showIcon(No1F1Constants.ICON_WECHAT); setVibration(1, 2); break; } } @Override public void onDeleteNotification(int id) { } @Override public void onSetTime() { try { TransactionBuilder builder = performInitialized("setTime"); Calendar c = GregorianCalendar.getInstance(); byte[] datetimeBytes = new byte[] { No1F1Constants.CMD_DATETIME, (byte) ((c.get(Calendar.YEAR) / 256) & 0xff), (byte) (c.get(Calendar.YEAR) % 256), (byte) (c.get(Calendar.MONTH) + 1), (byte) c.get(Calendar.DAY_OF_MONTH), (byte) c.get(Calendar.HOUR_OF_DAY), (byte) c.get(Calendar.MINUTE), (byte) c.get(Calendar.SECOND) }; builder.write(ctrlCharacteristic, datetimeBytes); } catch (IOException e) { GB.toast(getContext(), "Error setting time: " + e.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR); } } @Override public void onSetAlarms(ArrayList<? extends Alarm> alarms) { try { TransactionBuilder builder = performInitialized("Set alarm"); boolean anyAlarmEnabled = false; for (Alarm alarm : alarms) { anyAlarmEnabled |= alarm.isEnabled(); Calendar calendar = alarm.getAlarmCal(); int maxAlarms = 3; if (alarm.getIndex() >= maxAlarms) { if (alarm.isEnabled()) { GB.toast(getContext(), "Only 3 alarms are supported.", Toast.LENGTH_LONG, GB.WARN); } return; } int daysMask = 0; if (alarm.isEnabled()) { daysMask = alarm.getRepetitionMask(); // Mask for this device starts from sunday and not from monday. daysMask = (daysMask / 64) + (daysMask >> 1); } byte[] alarmMessage = new byte[] { No1F1Constants.CMD_ALARM, (byte) daysMask, (byte) calendar.get(Calendar.HOUR_OF_DAY), (byte) calendar.get(Calendar.MINUTE), (byte) (alarm.isEnabled() ? 2 : 0), // vibration duration (byte) (alarm.isEnabled() ? 10 : 0), // vibration count (byte) (alarm.isEnabled() ? 2 : 0), // unknown (byte) 0, (byte) (alarm.getIndex() + 1) }; builder.write(ctrlCharacteristic, alarmMessage); } builder.queue(getQueue()); if (anyAlarmEnabled) { GB.toast(getContext(), getContext().getString(R.string.user_feedback_miband_set_alarms_ok), Toast.LENGTH_SHORT, GB.INFO); } else { GB.toast(getContext(), getContext().getString(R.string.user_feedback_all_alarms_disabled), Toast.LENGTH_SHORT, GB.INFO); } } catch (IOException ex) { GB.toast(getContext(), getContext().getString(R.string.user_feedback_miband_set_alarms_failed), Toast.LENGTH_LONG, GB.ERROR, ex); } } @Override public void onSetCallState(CallSpec callSpec) { if (callSpec.command == CallSpec.CALL_INCOMING) { showNotification(No1F1Constants.NOTIFICATION_CALL, callSpec.name, callSpec.number); setVibration(3, 5); } else { stopNotification(); setVibration(0, 0); } } @Override public void onSetCannedMessages(CannedMessagesSpec cannedMessagesSpec) { } @Override public void onSetMusicState(MusicStateSpec stateSpec) { } @Override public void onSetMusicInfo(MusicSpec musicSpec) { } @Override public void onEnableRealtimeSteps(boolean enable) { } @Override public void onInstallApp(Uri uri) { } @Override public void onAppInfoReq() { } @Override public void onAppStart(UUID uuid, boolean start) { } @Override public void onAppDelete(UUID uuid) { } @Override public void onAppConfiguration(UUID appUuid, String config, Integer id) { } @Override public void onAppReorder(UUID[] uuids) { } @Override public void onFetchActivityData() { sendFetchCommand(No1F1Constants.CMD_FETCH_STEPS); } @Override public void onReboot() { } @Override public void onHeartRateTest() { try { TransactionBuilder builder = performInitialized("heartRateTest"); byte[] msg = new byte[] { No1F1Constants.CMD_REALTIME_HEARTRATE, (byte) 0x11 }; builder.write(ctrlCharacteristic, msg); performConnected(builder.getTransaction()); } catch (IOException e) { GB.toast(getContext(), "Error starting heart rate measurement: " + e.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR); } } @Override public void onEnableRealtimeHeartRateMeasurement(boolean enable) { } @Override public void onFindDevice(boolean start) { if (start) setVibration(3, 10); else setVibration(0, 0); } @Override public void onSetConstantVibration(int integer) { } @Override public void onScreenshotReq() { } @Override public void onEnableHeartRateSleepSupport(boolean enable) { } @Override public void onSetHeartRateMeasurementInterval(int seconds) { } @Override public void onAddCalendarEvent(CalendarEventSpec calendarEventSpec) { } @Override public void onDeleteCalendarEvent(byte type, long id) { } @Override public void onSendConfiguration(String config) { TransactionBuilder builder; try { builder = performInitialized("Sending configuration for option: " + config); switch (config) { case SettingsActivity.PREF_MEASUREMENT_SYSTEM: setDisplaySettings(builder); break; } builder.queue(getQueue()); } catch (IOException e) { GB.toast("Error setting configuration", Toast.LENGTH_LONG, GB.ERROR, e); } } @Override public void onTestNewFunction() { } @Override public void onSendWeather(WeatherSpec weatherSpec) { } @Override public boolean useAutoConnect() { return true; } /** * Set display settings (time format and measurement system) * * @param transaction * @return */ private No1F1Support setDisplaySettings(TransactionBuilder transaction) { byte[] displayBytes = new byte[] { No1F1Constants.CMD_DISPLAY_SETTINGS, 0x00, // 1 - display distance in kilometers, 2 - in miles 0x00 // 1 - display 24-hour clock, 2 - for 12-hour with AM/PM }; String units = GBApplication.getPrefs().getString(SettingsActivity.PREF_MEASUREMENT_SYSTEM, getContext().getString(R.string.p_unit_metric)); if (units.equals(getContext().getString(R.string.p_unit_metric))) { displayBytes[1] = 1; } else { displayBytes[1] = 2; } if (DateFormat.is24HourFormat(getContext())) { displayBytes[2] = 1; } else { displayBytes[2] = 2; } transaction.write(ctrlCharacteristic, displayBytes); return this; } private void sendSettings(TransactionBuilder builder) { // TODO Create custom settings page for changing hardcoded values // set user data ActivityUser activityUser = new ActivityUser(); byte[] userBytes = new byte[] { No1F1Constants.CMD_USER_DATA, 0, (byte) Math.round(activityUser.getHeightCm() * 0.43), // step length in cm 0, (byte) activityUser.getWeightKg(), 5, // screen on time 0, 0, (byte) (activityUser.getStepsGoal() / 256), (byte) (activityUser.getStepsGoal() % 256), 1, // unknown (byte) 0xff, // unknown 0, (byte) activityUser.getAge(), 0 }; if (activityUser.getGender() == ActivityUser.GENDER_FEMALE) userBytes[14] = 2; // female else userBytes[14] = 1; // male builder.write(ctrlCharacteristic, userBytes); // more settings builder.write(ctrlCharacteristic, new byte[] { No1F1Constants.CMD_DEVICE_SETTINGS, 0x00, // 1 - turns on inactivity alarm 0x3c, 0x02, 0x03, 0x01, 0x00 }); setDisplaySettings(builder); // heart rate measurement mode builder.write(ctrlCharacteristic, new byte[] { No1F1Constants.CMD_HEARTRATE_SETTINGS, 0x02, // 1 - static (measure for 15 seconds), 2 - realtime }); // periodic heart rate measurement builder.write(ctrlCharacteristic, new byte[] { No1F1Constants.CMD_HEARTRATE_SETTINGS, 0x01, 0x02 // measure heart rate every 2 hours (0 to turn off) }); } private void setVibration(int duration, int count) { try { TransactionBuilder builder = performInitialized("vibrate"); byte[] msg = new byte[] { No1F1Constants.CMD_ALARM, 0, 0, 0, (byte) duration, (byte) count, 2, 1 }; builder.write(ctrlCharacteristic, msg); performConnected(builder.getTransaction()); } catch (IOException e) { LOG.warn("Unable to set vibration", e); } } private void showIcon(int iconId) { try { TransactionBuilder builder = performInitialized("showIcon"); byte[] msg = new byte[] { No1F1Constants.CMD_ICON, (byte) iconId }; builder.write(ctrlCharacteristic, msg); performConnected(builder.getTransaction()); } catch (IOException e) { GB.toast(getContext(), "Error showing icon: " + e.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR); } } private void showNotification(int type, String header, String body) { try { // TODO Add transliteration. TransactionBuilder builder = performInitialized("showNotification"); int length; byte[] bytes; byte[] msg; // send header bytes = header.toString().getBytes("EUC-JP"); length = min(bytes.length, 18); msg = new byte[length + 2]; msg[0] = No1F1Constants.CMD_NOTIFICATION; msg[1] = No1F1Constants.NOTIFICATION_HEADER; System.arraycopy(bytes, 0, msg, 2, length); builder.write(ctrlCharacteristic, msg); // send body bytes = header.toString().getBytes("EUC-JP"); length = min(bytes.length, 18); msg = new byte[length + 2]; msg[0] = No1F1Constants.CMD_NOTIFICATION; msg[1] = (byte) type; System.arraycopy(bytes, 0, msg, 2, length); builder.write(ctrlCharacteristic, msg); performConnected(builder.getTransaction()); } catch (IOException e) { GB.toast(getContext(), "Error showing notificaton: " + e.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR); } } private void stopNotification() { try { TransactionBuilder builder = performInitialized("clearNotification"); byte[] msg = new byte[] { No1F1Constants.CMD_NOTIFICATION, No1F1Constants.NOTIFICATION_STOP }; builder.write(ctrlCharacteristic, msg); performConnected(builder.getTransaction()); } catch (IOException e) { LOG.warn("Unable to stop notification", e); } } private void sendFetchCommand(byte type) { samples.clear(); crc = 0; firstTimestamp = 0; try { TransactionBuilder builder = performInitialized("fetchActivityData"); builder.add(new SetDeviceBusyAction(getDevice(), getContext().getString(R.string.busy_task_fetch_activity_data), getContext())); byte[] msg = new byte[] { type, (byte) 0xfa }; builder.write(ctrlCharacteristic, msg); performConnected(builder.getTransaction()); } catch (IOException e) { GB.toast(getContext(), "Error fetching activity data: " + e.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR); } } private void handleActivityData(byte[] data) { if (data[1] == (byte) 0xfd) { LOG.info("CRC received: " + (data[2] & 0xff) + ", calculated: " + (crc & 0xff)); if (data[2] != crc) { GB.toast(getContext(), "Incorrect CRC. Try fetching data again.", Toast.LENGTH_LONG, GB.ERROR); GB.updateTransferNotification("Data transfer failed", false, 0, getContext()); if (getDevice().isBusy()) { getDevice().unsetBusyTask(); getDevice().sendDeviceUpdateIntent(getContext()); } } else if (samples.size() > 0) { try (DBHandler dbHandler = GBApplication.acquireDB()) { Long userId = DBHelper.getUser(dbHandler.getDaoSession()).getId(); Long deviceId = DBHelper.getDevice(getDevice(), dbHandler.getDaoSession()).getId(); No1F1SampleProvider provider = new No1F1SampleProvider(getDevice(), dbHandler.getDaoSession()); for (int i = 0; i < samples.size(); i++) { samples.get(i).setDeviceId(deviceId); samples.get(i).setUserId(userId); if (data[0] == No1F1Constants.CMD_FETCH_STEPS) { samples.get(i).setRawKind(ActivityKind.TYPE_ACTIVITY); samples.get(i).setRawIntensity(samples.get(i).getSteps()); } else if (data[0] == No1F1Constants.CMD_FETCH_STEPS) { if (samples.get(i).getRawIntensity() < 7) samples.get(i).setRawKind(ActivityKind.TYPE_DEEP_SLEEP); else samples.get(i).setRawKind(ActivityKind.TYPE_LIGHT_SLEEP); } provider.addGBActivitySample(samples.get(i)); } LOG.info("Activity data saved"); if (data[0] == No1F1Constants.CMD_FETCH_STEPS) { sendFetchCommand(No1F1Constants.CMD_FETCH_SLEEP); } else if (data[0] == No1F1Constants.CMD_FETCH_SLEEP) { sendFetchCommand(No1F1Constants.CMD_FETCH_HEARTRATE); } else { GB.updateTransferNotification("", false, 100, getContext()); if (getDevice().isBusy()) { getDevice().unsetBusyTask(); getDevice().sendDeviceUpdateIntent(getContext()); } } } catch (Exception ex) { GB.toast(getContext(), "Error saving activity data: " + ex.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR); GB.updateTransferNotification("Data transfer failed", false, 0, getContext()); } } } else { No1F1ActivitySample sample = new No1F1ActivitySample(); Calendar timestamp = GregorianCalendar.getInstance(); timestamp.set(Calendar.YEAR, data[1] * 256 + (data[2] & 0xff)); timestamp.set(Calendar.MONTH, (data[3] - 1) & 0xff); timestamp.set(Calendar.DAY_OF_MONTH, data[4] & 0xff); timestamp.set(Calendar.HOUR_OF_DAY, data[5] & 0xff); timestamp.set(Calendar.SECOND, 0); int startProgress = 0; if (data[0] == No1F1Constants.CMD_FETCH_STEPS) { timestamp.set(Calendar.MINUTE, 0); sample.setSteps(data[6] * 256 + (data[7] & 0xff)); crc ^= (data[6] ^ data[7]); } else if (data[0] == No1F1Constants.CMD_FETCH_SLEEP) { timestamp.set(Calendar.MINUTE, data[6] & 0xff); sample.setRawIntensity(data[7] * 256 + (data[8] & 0xff)); crc ^= (data[7] ^ data[8]); startProgress = 33; } else if (data[0] == No1F1Constants.CMD_FETCH_HEARTRATE) { timestamp.set(Calendar.MINUTE, data[6] & 0xff); sample.setHeartRate(data[7] & 0xff); crc ^= (data[6] ^ data[7]); startProgress = 66; } sample.setTimestamp((int) (timestamp.getTimeInMillis() / 1000L)); samples.add(sample); if (firstTimestamp == 0) firstTimestamp = sample.getTimestamp(); int progress = startProgress + 33 * (sample.getTimestamp() - firstTimestamp) / ((int) (Calendar.getInstance().getTimeInMillis() / 1000L) - firstTimestamp); GB.updateTransferNotification(getContext().getString(R.string.busy_task_fetch_activity_data), true, progress, getContext()); } } private void handleRealtimeHeartRateData(byte[] data) { if (data.length == 2) { if (data[1] == (byte) 0x11) LOG.info("Heart rate measurement started."); else LOG.info("Heart rate measurement stopped."); return; } // Check if data is valid. Otherwise ignore sample. if (data[2] == 0) { No1F1ActivitySample sample = new No1F1ActivitySample(); sample.setTimestamp((int) (GregorianCalendar.getInstance().getTimeInMillis() / 1000L)); sample.setHeartRate(data[3] & 0xff); LOG.info("Current heart rate is: " + sample.getHeartRate() + " BPM"); try (DBHandler dbHandler = GBApplication.acquireDB()) { Long userId = DBHelper.getUser(dbHandler.getDaoSession()).getId(); Long deviceId = DBHelper.getDevice(getDevice(), dbHandler.getDaoSession()).getId(); No1F1SampleProvider provider = new No1F1SampleProvider(getDevice(), dbHandler.getDaoSession()); sample.setDeviceId(deviceId); sample.setUserId(userId); provider.addGBActivitySample(sample); } catch (Exception ex) { LOG.warn("Error saving current heart rate: " + ex.getLocalizedMessage()); } } } }