private void BmpUpdater()
{
var dataIndex = _metaDataCount;
var time = BitConverter.GetBytes(Clock.Instance.ElapsedMilliseconds);
_dataArray[dataIndex++] = time[0];
_dataArray[dataIndex++] = time[1];
_dataArray[dataIndex++] = time[2];
var pressure = _bmpSensor.GetPressure();
var temp = _bmpSensor.GetTemperature() * _precision; //precision because 4 sig figs go into decimals.
var altitude = Bmp180.PressureToAltitude(Bmp180.SensorsPressureSealevelhpa, pressure, temp);
//add pressure to data array (8 bytes)
var pressureBytes = BitConverter.GetBytes(pressure);
for (int i = 0; i < 8; i++)
{
_dataArray[dataIndex++] = pressureBytes[i];
}
//add temp data (needs sign) to data (3 bytes)
_dataArray[dataIndex++] = (temp < 0 ? (byte)1 : (byte)0);
temp = (float)Math.Abs(temp);
_dataArray[dataIndex++] = (byte)(((short)temp >> 8) & 0xFF);
_dataArray[dataIndex++] = (byte)((short)temp & 0xFF);
//add altitude data (can be unsigned, less than 65536) (2 bytes)
altitude = (ushort)altitude;
_dataArray[dataIndex++] = (byte)(((short)altitude >> 8) & 0xFF);
_dataArray[dataIndex] = (byte)((short)altitude & 0xFF);
Array.Copy(_dataArray, _workItem.PacketData, _dataArray.Length);
Thread.Sleep(_delay);
}