public override void OnCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic)
{
var record = new BloodPressureData();
var offset = 0;
Integer flags = characteristic.GetIntValue(GattFormat.Uint8, offset++);
// See BPMManagerCallbacks.UNIT_* for unit options
bool timestampPresent = ((int)flags & 0x02) > 0;
bool pulseRatePresent = ((int)flags & 0x04) > 0;
// following bytes - systolic, diastolic and mean arterial pressure
record.Systolic = characteristic.GetFloatValue(GattFormat.Sfloat, offset).FloatValue();
record.Diastolic = characteristic.GetFloatValue(GattFormat.Sfloat, offset + 2)
.FloatValue();
offset += 6;
if (timestampPresent)
{
record.RecordDateTime = new DateTime(
characteristic.GetIntValue(GattFormat.Uint16, offset).IntValue(),
characteristic.GetIntValue(GattFormat.Uint8, offset + 2).IntValue(),
characteristic.GetIntValue(GattFormat.Uint8, offset + 3).IntValue(),
characteristic.GetIntValue(GattFormat.Uint8, offset + 4).IntValue(),
characteristic.GetIntValue(GattFormat.Uint8, offset + 5).IntValue(),
characteristic.GetIntValue(GattFormat.Uint8, offset + 6).IntValue());
offset += 7;
}
if (pulseRatePresent)
{
record.PulseRate = characteristic.GetFloatValue(GattFormat.Sfloat, offset).FloatValue();
}
Records.Add(record);
}
public override void OnCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic)
{
if (!BLEHelpers.UuidGlucMeasurementChar.Equals(characteristic.Uuid))
{
return;
}
var offset = 0;
int flags = characteristic.GetIntValue(GattFormat.Uint8, offset).IntValue();
offset += 1;
bool timeOffsetPresent = (flags & 0x01) > 0;
bool typeAndLocationPresent = (flags & 0x02) > 0;
bool sensorStatusAnnunciationPresent = (flags & 0x08) > 0;
// create and fill the new record
_record = new GlucoseDeviceData {
SequenceNumber = characteristic.GetIntValue(GattFormat.Uint16, offset).IntValue()
};
offset += 2;
int year = characteristic.GetIntValue(GattFormat.Uint16, offset).IntValue();
int month = characteristic.GetIntValue(GattFormat.Uint8, offset + 2).IntValue();
int day = characteristic.GetIntValue(GattFormat.Uint8, offset + 3).IntValue();
int hours = characteristic.GetIntValue(GattFormat.Uint8, offset + 4).IntValue();
int minutes = characteristic.GetIntValue(GattFormat.Uint8, offset + 5).IntValue();
int seconds = characteristic.GetIntValue(GattFormat.Uint8, offset + 6).IntValue();
offset += 7;
var calendar = Calendar.Instance;
calendar.Set(year, month, day, hours, minutes, seconds);
if (timeOffsetPresent)
{
characteristic.GetIntValue(GattFormat.Uint16, offset).IntValue();
offset += 2;
}
if (typeAndLocationPresent)
{
_record.GlucoseConcentration = characteristic.GetFloatValue(GattFormat.Sfloat, offset).FloatValue();
offset += 3;
}
if (sensorStatusAnnunciationPresent)
{
characteristic.GetIntValue(GattFormat.Uint16, offset).IntValue();
}
gatt.Disconnect();
}
public sealed override void BuildCharacteristic(BluetoothGattCharacteristic characteristic)
{
if (!characteristic.Uuid.Equals(Uuid))
{
throw new GattCharactersticMismatch(this, characteristic.Uuid);
}
var bytes = characteristic.GetValue();
if (bytes == null)
{
return;
}
//1 bit per flag, as a boolean
TimeOffsetPresent = bytes[0].BitAt(0);
GlucoseConcentrationPresent = bytes[0].BitAt(1);
_glucoseConcentrationUnits = bytes[0].BitAt(2);
SensorStatusAnnunciationPresent = bytes[0].BitAt(3);
ContextInformationFollows = bytes[0].BitAt(4);
SequenceNumber = characteristic.GetIntValue(GattFormat.Uint16, 1).IntValue();
_baseTime.ConvertFromCharacteristicByBytes(bytes.SubarrayAt(3, 9)); //7 bytes for the date.
BaseTime = _baseTime.Date;
TimeOffset = characteristic.GetIntValue(GattFormat.Sint16, 10).IntValue();
var glcConcentration = characteristic.GetFloatValue(GattFormat.Sfloat, 12).FloatValue();
if (_glucoseConcentrationUnits)
{
GlucoseConcentration = Math.Round(glcConcentration * 100000 / MmollToMgdl, 1);
}
else
{
GlucoseConcentration = Math.Round(glcConcentration * 1000 * MmollToMgdl, 1);
}
Type = (GlucoseTypes)bytes.SubarrayAt(14, 14).ToInt16().NibbleAt(false);
SampleLocation = (GlucoseSampleLocation)bytes.SubarrayAt(14, 14).ToInt16().NibbleAt(true); //need a nibble at method
//SensorStatusAnnunciation = bytes.SubarrayAt(17, 19);
}
public override void BuildCharacteristic(BluetoothGattCharacteristic characteristic)
{
if (!characteristic.Uuid.Equals(Uuid))
{
throw new GattCharactersticMismatch(this, characteristic.Uuid);
}
var bytes = characteristic.GetValue();
if (bytes == null)
{
return;
}
var offset = 0;
//1 bit per flag, as a boolean
CarbohydratePresent = bytes[0].BitAt(0);
MealPresent = bytes[0].BitAt(1);
TesterHealthPresent = bytes[0].BitAt(2);
ExercisePresent = bytes[0].BitAt(3);
MedicationPresent = bytes[0].BitAt(4);
_medicationUnitsValue = bytes[0].BitAt(5);
HbA1cPresent = bytes[0].BitAt(6);
ExtendedFlags = bytes[0].BitAt(7);
offset++;
SequenceNumber = characteristic.GetIntValue(GattFormat.Uint16, offset).IntValue();
if (CarbohydratePresent)
{
offset++;
CarbohydrateId = (CarbohydrateTypes)characteristic.GetIntValue(GattFormat.Uint8, offset).IntValue();
offset++;
CarbohydrateUnits = characteristic.GetFloatValue(GattFormat.Sfloat, offset).FloatValue();
offset++;
}
if (MealPresent)
{
offset++;
Meal = (MealTypes)characteristic.GetIntValue(GattFormat.Uint8, offset).IntValue();
}
if (TesterHealthPresent)
{
offset++;
Tester = (TesterTypes)bytes.SubarrayAt(offset, offset).ToInt16().NibbleAt(true);
Health = (HealthTypes)bytes.SubarrayAt(offset, offset).ToInt16().NibbleAt(false);
}
if (ExercisePresent)
{
offset++;
ExerciseDuration = bytes.SubarrayAt(offset, offset + 1).ToUInt16();
offset++;
ExerciseIntensity = (ushort)characteristic.GetIntValue(GattFormat.Uint8, offset).ShortValue();
}
if (MedicationPresent)
{
offset++;
MedicationId = (MedicationTypes)characteristic.GetIntValue(GattFormat.Uint8, offset).IntValue();
offset++;
MedicationUnits = characteristic.GetFloatValue(GattFormat.Sfloat, offset).FloatValue();
offset++;
}
if (HbA1cPresent)
{
offset++;
HbA1c = characteristic.GetFloatValue(GattFormat.Sfloat, offset).FloatValue();
}
}