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LPS22HB Pressure Sensor

Measure barometric air pressure and temperature from LPS22HB sensor

Since R2021b

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  • block icon for LPS22HB Pressure Sensor

Libraries:
Embedded Coder Support Package for STMicroelectronics STM32 Processors / STM32L475VG-Discovery (B-L475E-IOT01A)
Simulink Coder Support Package for STMicroelectronics Nucleo Boards / Sensors
Simulink Support Package for Arduino Hardware / Sensors

Description

The LPS22HB Pressure Sensor block measures barometric air pressure using the LPS22HB pressure sensor interfaced with the Nucleo/STM32L475-Discovery board. This sensor comprises of a sensing element to measure the absolute pressure. The block also measures the temperature from the embedded temperature sensor in LPS22HB Sensor.

You can also select an output data rate in the block, and use the low pass filter option for filtering the measured pressure values.

Examples

Read Data from I2C-Based Sensors on STM32L475VG Discovery Board

Read Data from I2C-Based Sensors on STM32L475VG Discovery Board

Use the Embedded Coder® Support Package for STMicroelectronics® STM32 Processors to configure and read data from these sensors on the STM32L475VG Discovery (B-L475E-IOT01A) board:

Ports

Output

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The block outputs the barometric air pressure in Pascals (Pa).

Dependencies

This output port appears only if you select the Pressure (Pa) parameter.

Data Types: double

Temperature (in ℃) measured by LPS22HB sensor connected to Nucleo/STM32L475-Discovery board.

Dependencies

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

Data Types: double

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

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Select this parameter to use onboard sensors.

Note

This parameters is available only for STM32L475VG-Discovery (B-L475E-IOT01A) board.

Specify the I2C module on the board. The I2C bus frequency, serial clock (SCL) pin and serial data (SDA) pin are taken according to the corresponding I2C module entry in the configuration parameters.

Dependencies

To enable this parameter, deselect the Use onboard sensors parameter.

The peripheral addresses to communicate with the LPS22HB sensor are decided by the state of the SA0 pin on the hardware board. This table provides the peripheral addresses corresponding to the pin and their state.

Pin NamePin StatePeripheral Address
SA000x5C
10x5D

Dependencies

To enable this parameter, deselect the Use onboard sensors parameter.

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

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

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

Select the output data rate at which pressure data is sampled, which also determines the bandwidth.

Enable the low pass filter for reading pressure values.

Select the required bandwidth of the low pass filter.

Dependencies

This parameter appears only if you select the Enable low pass filter parameter.

Specify how often this block reads the data from the LPS22HB 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.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2021b

See Also

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