Beispiel #1
0
        //Method to read the caliberation data from the registers
        private async Task <BMP280_CalibrationData> ReadCoefficeints()
        {
            // 16 bit calibration data is stored as Little Endian, the helper method will do the byte swap.
            CalibrationData = new BMP280_CalibrationData();

            // Read temperature calibration data
            CalibrationData.dig_T1 = ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_T1);
            CalibrationData.dig_T2 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_T2);
            CalibrationData.dig_T3 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_T3);

            // Read presure calibration data
            CalibrationData.dig_P1 = ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P1);
            CalibrationData.dig_P2 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P2);
            CalibrationData.dig_P3 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P3);
            CalibrationData.dig_P4 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P4);
            CalibrationData.dig_P5 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P5);
            CalibrationData.dig_P6 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P6);
            CalibrationData.dig_P7 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P7);
            CalibrationData.dig_P8 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P8);
            CalibrationData.dig_P9 = (Int16)ReadUInt16_LittleEndian((byte)eRegisters.BMP280_REGISTER_DIG_P9);

            await Task.Delay(1);

            return(CalibrationData);
        }
Beispiel #2
0
        private async Task Begin()
        {
            Debug.WriteLine("BMP280::Begin");
            byte[] WriteBuffer = new byte[] { (byte)eRegisters.BMP280_REGISTER_CHIPID };
            byte[] ReadBuffer  = new byte[] { 0xFF };

            //Read the device signature
            bmp280.WriteRead(WriteBuffer, ReadBuffer);
            Debug.WriteLine("BMP280 Signature: " + ReadBuffer[0].ToString());

            ////Verify the device signature
            //if (ReadBuffer[0] != BMP280_Signature)
            //{
            //    Debug.WriteLine("BMP280::Begin Signature Mismatch.");
            //    return;
            //}

            //Set the initalize variable to true
            init = true;

            //Read the coefficients table
            CalibrationData = await ReadCoefficeints();

            //Write control register
            await WriteControlRegister();

            //Write humidity control register
            await WriteControlRegisterHumidity();
        }