HTS221 Humidity Sensor

Measure relative humidity and temperature from HTS221 sensor

Since R2021a

Add-On Required: This feature requires the Simulink Support Package for Arduino Hardware add-on.

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Libraries:
Simulink Support Package for Arduino Hardware / Sensors

Description

The HTS221 Humidity Sensor block measures relative humidity and ambient temperature using the HTS221 humidity sensor interfaced with the Arduino^® hardware. This sensor comprises of a sensing element to measure the relative humidity and temperature.

You can also select an output data rate for the measured values in the block.

Note

If you are using Arduino Nano 33 BLE Sense hardware, which always includes an embedded sensor, reading data from a breakout board containing HTS221 sensor is not supported.

Ports

Output

Humidity — Relative humidity as measured by HTS221 sensor

scalar

The block outputs the relative humidity in percentage (%).

Dependencies

This output port appears only if you select the Humidity (%) parameter.

Data Types: double

Temperature — Temperature measured by HTS221 sensor

scalar

Temperature (in ℃) measured by HTS221 sensor connected to Arduino board.

Dependencies

This output port appears only if you select the Temperature (℃) parameter.

Data Types: double

Status — Status of pressure and temperature measurements

0 | 1 | -1

Status of pressure and temperature measurements, specified as a 1-by-2 vector. 0 indicates that the data read is new, 1 indicates that the data read is not new, and -1 indicates that the corresponding output is not selected.

Dependencies

This output port appears only if you select the Status parameter.

Data Types: int8

Parameters

I2C module — I2C communication module

0 (default) | scalar

Specify the I2C module on the Arduino hardware to communicate with sensor peripherals. For more information on the Arduino pin mapping and modules that hardware boards support, see Pin Mapping for Arduino Timer Independent Blocks.

I2C address — Peripheral address to communicate with sensor

0x5F (default) | scalar

The peripheral address for the HTS221 sensor to communicate with the Arduino hardware.

Humidity (%) — Set output port for reading humidity

on (default) | off

Select this parameter to set Humidity as one of the output ports.

Temperature (℃) — Set output port for reading temperature

on (default) | off

Select this parameter to set Temperature as one of the output ports.

Status — Set output port for obtaining status

off (default) | on

Select this parameter to set Status as one of the output ports.

Output data rate (ODR) — Rate at which humidity and temperature data is sampled

1 Hz (default) | 7 Hz | 12.5 Hz

Select the output data rate at which humidity data is sampled.

Sample time — Time interval to read data

-1 (default) | positive integer

Specify how often this block reads the data from the HTS221 sensor. When you set this parameter to -1, Simulink determines the best sample time for the block based on the block context within the model.

Version History

Introduced in R2021a