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17.6 PROJECT 1—MEASURING AND DISPLAYING THE HUMIDITY, TEMPERATURE, ATMOSPHERIC PRESSURE  409






































            FIG. 17.4  X-NUCLEO-IKS01A2 expansion board.
                                                  2
            and they all share the same bus. The module I C default addresses are shown in Fig. 17.5 and are
            repeated below for convenience:


                                            2
                       Module              I C Address         Module Description
                       LSM6DSL             0xD6                Accelerometer+Gyroscope
                       LSM303AGR           0x32                Accelerometer
                       LSM303AGR           0x3C                Magnetometer
                       HTS221              0xBE                Humidity+Temperature
                       LPS221HB            0xBA                Pressure


             17.6 PROJECT 1—MEASURING AND DISPLAYING THE HUMIDITY,
            TEMPERATURE, ATMOSPHERIC PRESSURE, AND DEW POINT USING
                         THE X-NUCLEO-IKS01A2 EXPANSION BOARD

            17.6.1 Description
              In this project an X-NUCLEO-IKS01A2 expansion board is plugged on the Nucleo-F411RE
            development board. The project measures the ambient humidity, temperature, and the
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