LIS3MDL Magnetometer Sensor

Measure magnetic field strength and temperature from LIS3MDL Magnetometer sensor

Since R2021b

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

Description

The LIS3MDL Magnetometer Sensor block outputs the values of magnetic field strength along x-, y- and z- axes as measured by the LIS3MDL Magnetometer sensor connected to Nucleo/STM32L475-Discovery board. The block also outputs the temperature as read by the LIS3MDL Magnetometer sensor.

Examples

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:

• Open Model

Ports

Output

Magnetic Field — Magnetic field strength measured by LIS3MDL sensor

row vector

Magnetic field strength (in µT) measured by LIS3MDL sensor connected to Nucleo/STM32L475-Discovery board, along the x-, y- and z- axes, specified as a row vector [x,y,z].

Dependencies

This output port appears only if you select the Magnetic Field (µT) parameter.

Data Types: double

Temperature — Temperature measured by LIS3MDL sensor

scalar

Temperature (in ℃) measured by LIS3MDL sensor connected to Nucleo/STM32L475-Discovery board.

Dependencies

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

Data Types: double

Status — Status of magnetic and temperature measurements

-1 | 0 | 1

Status of magnetic 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

Main Tab

Use onboard sensors — Enable to use onboard sensors

on (default) | off

Select this parameter to use onboard sensors.

Note

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

I2C module — Specify I2C module

2 (default) | positive integer

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.

Magnetic Field (µT) — Set output port for reading magnetic field

on (default) | off

Select this parameter to set Magnetic Field 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.

Magnetic Field Status — Set output port for obtaining magnetic field status

off (default) | on

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

Sample time — Time interval to read data

-1 (default) | positive integer

Specify how often this block reads the data from the LIS3MDL 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.

Advanced Tab

Magnetometer range — Full scale for measuring magnetic range

±2g (default) | ±4g | ±8g

Select the full scale for measuring linear acceleration (the range of acceleration that the sensor needs to measure).

Magnetometer output data rate — Rate at which magnetometer data is sampled

0.625 Hz (default) | 1.25 Hz | 2.5 Hz | 5 Hz | 10 Hz | 20 Hz | 40 Hz | 80 Hz

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

Extended Capabilities

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

Version History

Introduced in R2021b