/// <summary>
        /// Reads calibration information from BMP280.
        /// </summary>
        /// <returns>Task.</returns>
        private async Task <BMP280CalibrationInformation> ReadCalibrationInformation()
        {
            // Read information from I2C device.
            var information = new BMP280CalibrationInformation
            {
                // Read temperatur calibration information
                Temperatur1 = ReadUIntFromLittleEndian(REGISTER_DIGIT_TEMPERATUR_1),
                Temperatur2 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_TEMPERATUR_2),
                Temperatur3 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_TEMPERATUR_3),
                // Read pressure calibration information.
                Pressure1 = ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_1),
                Pressure2 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_2),
                Pressure3 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_3),
                Pressure4 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_4),
                Pressure5 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_5),
                Pressure6 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_6),
                Pressure7 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_7),
                Pressure8 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_8),
                Pressure9 = (short)ReadUIntFromLittleEndian(REGISTER_DIGIT_PRESSURE_9)
            };

            // Ensure that every request has been read and processed.
            await Task.Delay(1);

            // Return the information.
            return(information);
        }
        /// <summary>
        /// Initializes the BMP280 async.
        ///
        /// Caution:
        ///     This is required before accessing other
        ///     methods in this class.
        /// </summary>
        /// <param name="i2cController">Underlying I2C controller.</param>
        /// <returns>Task.</returns>
        public async Task InitializeAsync(I2cController i2cController)
        {
            Logger.Log(this, "InitializeAsync");

            // Setup device.
            bmp280 = i2cController.GetDevice(new I2cConnectionSettings(BMP280_ADDRESS)
            {
                BusSpeed = I2cBusSpeed.FastMode
            });

            // Ensure device has been found.
            if (bmp280 == null)
            {
                throw new OperationCanceledException("BPM280 device not found.");
            }

            // Setup device.
            byte[] writeBuffer = new byte[] { REGISTER_CHIPID };
            byte[] readBuffer  = new byte[] { 0xFF };

            // Read signature.
            bmp280.WriteRead(writeBuffer, readBuffer);
            byte signature = readBuffer[0];

            // Ensure valid signature has been found.
            if (signature != BMP280_SIGNATURE)
            {
                Logger.Log(this, $"Found signature {signature.ToString()} does not match required signature: '{BMP280_SIGNATURE.ToString()}'");
                return;
            }

            // Set state as initialized.
            isInitialized = true;

            // Read calibration information from i2c device.
            calibrationInformation = await ReadCalibrationInformation();

            // Write /enable(?) control register
            await WriteControlRegister();
        }