@Override
public void onCharacteristicNotified(
BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
final UUID uuid = characteristic.getUuid();
if (GM_CHARACTERISTIC.equals(uuid)) {
if (mLogSession != null)
Logger.a(mLogSession, GlucoseMeasurementParser.parse(characteristic));
int offset = 0;
final int flags =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset);
offset += 1;
final boolean timeOffsetPresent = (flags & 0x01) > 0;
final boolean typeAndLocationPresent = (flags & 0x02) > 0;
final int concentrationUnit =
(flags & 0x04) > 0 ? GlucoseRecord.UNIT_molpl : GlucoseRecord.UNIT_kgpl;
final boolean sensorStatusAnnunciationPresent = (flags & 0x08) > 0;
final boolean contextInfoFollows = (flags & 0x10) > 0;
// create and fill the new record
final GlucoseRecord record = new GlucoseRecord();
record.sequenceNumber =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, offset);
offset += 2;
final int year =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, offset);
final int month =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 2)
- 1; // months are 1-based
final int day =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 3);
final int hours =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 4);
final int minutes =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 5);
final int seconds =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 6);
offset += 7;
final Calendar calendar = Calendar.getInstance();
calendar.set(year, month, day, hours, minutes, seconds);
record.time = calendar;
if (timeOffsetPresent) {
// time offset is ignored in the current release
record.timeOffset =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_SINT16, offset);
offset += 2;
}
if (typeAndLocationPresent) {
record.glucoseConcentration =
characteristic.getFloatValue(BluetoothGattCharacteristic.FORMAT_SFLOAT, offset);
record.unit = concentrationUnit;
final int typeAndLocation =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 2);
record.type = (typeAndLocation & 0xF0) >> 4; // TODO this way or around?
record.sampleLocation = (typeAndLocation & 0x0F);
offset += 3;
}
if (sensorStatusAnnunciationPresent) {
record.status =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, offset);
}
// This allows you to check other values that are not provided by the Nordic
// Semiconductor's Glucose Service in SDK 4.4.2.
// record.status = 0x1A;
// record.context = new GlucoseRecord.MeasurementContext();
// record.context.carbohydrateId = 1;
// record.context.carbohydrateUnits = 0.23f;
// record.context.meal = 2;
// record.context.tester = 2;
// record.context.health = 4;
// the following values are not implemented yet (see
// ExpandableRecordAdapter#getChildrenCount() and #getChild(...)
// record.context.exerciseDuration = 3600;
// record.context.exerciseIntensity = 45;
// record.context.medicationId = 3;
// record.context.medicationQuantity = 0.03f;
// record.context.medicationUnit = GlucoseRecord.MeasurementContext.UNIT_kg;
// record.context.HbA1c = 213.3f;
// data set modifications must be done in UI thread
mHandler.post(
new Runnable() {
@Override
public void run() {
// insert the new record to storage
mRecords.put(record.sequenceNumber, record);
// if there is no context information following the measurement data, notify
// callback about the new record
if (!contextInfoFollows) mCallbacks.onDatasetChanged();
}
});
} else if (GM_CONTEXT_CHARACTERISTIC.equals(uuid)) {
if (mLogSession != null)
Logger.a(mLogSession, GlucoseMeasurementContextParser.parse(characteristic));
int offset = 0;
final int flags =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset);
offset += 1;
final boolean carbohydratePresent = (flags & 0x01) > 0;
final boolean mealPresent = (flags & 0x02) > 0;
final boolean testerHealthPresent = (flags & 0x04) > 0;
final boolean exercisePresent = (flags & 0x08) > 0;
final boolean medicationPresent = (flags & 0x10) > 0;
final int medicationUnit =
(flags & 0x20) > 0
? GlucoseRecord.MeasurementContext.UNIT_l
: GlucoseRecord.MeasurementContext.UNIT_kg;
final boolean hbA1cPresent = (flags & 0x40) > 0;
final boolean moreFlagsPresent = (flags & 0x80) > 0;
final int sequenceNumber =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, offset);
offset += 2;
final GlucoseRecord record = mRecords.get(sequenceNumber);
if (record == null) {
DebugLogger.w(
TAG, "Context information with unknown sequence number: " + sequenceNumber);
return;
}
final GlucoseRecord.MeasurementContext context = new GlucoseRecord.MeasurementContext();
record.context = context;
if (moreFlagsPresent) offset += 1;
if (carbohydratePresent) {
context.carbohydrateId =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset);
context.carbohydrateUnits =
characteristic.getFloatValue(
BluetoothGattCharacteristic.FORMAT_SFLOAT, offset + 1);
offset += 3;
}
if (mealPresent) {
context.meal =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset);
offset += 1;
}
if (testerHealthPresent) {
final int testerHealth =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset);
context.tester = (testerHealth & 0xF0) >> 4;
context.health = (testerHealth & 0x0F);
offset += 1;
}
if (exercisePresent) {
context.exerciseDuration =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT16, offset);
context.exerciseIntensity =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 2);
offset += 3;
}
if (medicationPresent) {
context.medicationId =
characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset);
context.medicationQuantity =
characteristic.getFloatValue(
BluetoothGattCharacteristic.FORMAT_SFLOAT, offset + 1);
context.medicationUnit = medicationUnit;
offset += 3;
}
if (hbA1cPresent) {
context.HbA1c =
characteristic.getFloatValue(BluetoothGattCharacteristic.FORMAT_SFLOAT, offset);
}
// notify callback about the new record
mCallbacks.onDatasetChanged();
}
}
