Main Content

readTemperature

Read one ambient temperature data sample from HTS221 sensor

Since R2021a

collapse all in page

Syntax

[tempReading,timestamp] = readTemperature(sensor)

Description

[tempReading,timestamp] = readTemperature(sensor) returns one sample of the ambient temperature data from the HTS221 sensor. The ambient temperature sample is returned as a scalar in degree Celsius. The function also returns the timestamp at which MATLAB® receives the temperature data from the HTS221 sensor. The timestamp output is optional.

example

Examples

collapse all

Read the ambient temperature data from the HTS221 sensor.

Create a connection from MATLAB to the Raspberry Pi® hardware board.

mypi = raspi;
mypi = 

  Raspi with Properties:

           DeviceAddress: 'raspberrypi-hysdu8X38o'
                    Port: 18734
               BoardName: 'Raspberry Pi 3 Model B+'
           AvailableLEDs: {'led0'}
    AvailableDigitalPins: [4,5,6,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27]
    AvailableSPIChannels: {‘CE0’,’CE1’}
       AvailableI2CBuses: {'i2c-1'}
             I2CBusSpeed: 100000
        AvailabelWebCams: mmal service 16.1 (platform:bcm2835-v4l2)

Create an hts221 sensor object on the I2C bus 'i2c-1' on address '0x5F'.

sensor = hts221(mypi,'Bus','i2c-1');
sensor = 

  hts221 with properties:

                         I2CAddress: 95 ("0x5F")
                                Bus: i2c-1

Return one sample of ambient temperature data read from the HTS221 sensor.

[tempReading,timestamp] = readTemperature(sensor);
tempReading =

  data

    23.4384

timestamp = 

  datetime

   22-Dec-2020 17:23:09.934

Since the timestamp output is optional, you can obtain only the ambient temperature data from the HTS221 sensor.

[tempReading] = readTemperature(sensor);
tempReading =

  data

    23.4384

Input Arguments

collapse all

HTS221 sensor object connection to the Raspberry Pi hardware board, specified as a hts221 object.

Example: sensor = hts221(mypi) creates a connection to the HTS221 sensor on the Raspberry Pi object mypi.

Output Arguments

collapse all

Read the ambient temperature data from the HTS221 sensor.

Read the date and time at which MATLAB receives the ambient temperature sample value from the HTS221 sensor, specified as a datetime.

Extended Capabilities

Version History

Introduced in R2021a

See Also

| | | | |