MicroPython H3LIS200DL Driver

h3lis200dl

Micropython Driver for the ST H3LIS200DL Accelerometer

  • Author(s): Jose D. Montoya

class micropython_h3lis200dl.h3lis200dl.AlertStatus(high_g, low_g)

Create new instance of AlertStatus(high_g, low_g)

high_g

Alias for field number 0

low_g

Alias for field number 1

class micropython_h3lis200dl.h3lis200dl.H3LIS200DL(i2c, address: int = 0x19)[source]

Driver for the H3LIS200DL Sensor connected over I2C. The H3LIS200DL is a low-power high-performance 3-axis linear accelerometer

The H3LIS200DL has scales of ±100g/±200g and is capable of measuring accelerations with output data rates from 0.5 Hz to 1 kHz.

Parameters:
i2c : I2C

The I2C bus the H3LIS200DL is connected to.

address : int

The I2C device address. Defaults to 0x19

Raises:

RuntimeError – if the sensor is not found

Quickstart: Importing and using the device

Here is an example of using the H3LIS200DL class. First you will need to import the libraries to use the sensor

from machine import Pin, I2C
from micropython_h3lis200dl import h3lis200dl

Once this is done you can define your machine.I2C object and define your sensor object

i2c = I2C(1, sda=Pin(2), scl=Pin(3))
h3lis200dl = h3lis200dl.H3LIS200DL(i2c)

Now you have access to the attributes

accx, accy, accz = h3lis200dl.acceleration
property acceleration : tuple[float, float, float]

Acceleration property :return: Acceleration data

property data_rate : str

Sensor data_rate selects the data rate at which acceleration samples are produced. In low-power modes they define the output data resolution. Table shows all the possible configurations

Mode

Value

h3lis200dl.RATE_50HZ

0b00

h3lis200dl.RATE_100HZ

0b01

h3lis200dl.RATE_400HZ

0b10

h3lis200dl.RATE_1000HZ

0b11
property full_scale_selection : str

Sensor full_scale_selection

Mode

Value

h3lis200dl.SCALE_100G

0b0

h3lis200dl.SCALE_200G

0b1
property high_pass_filter_cutoff : str

Sensor high_pass_filter_cutoff

Mode

Value

Data Rate=50 Hz

Data Rate=100 Hz

Data Rate=400 Hz

Data Rate=1000 Hz

h3lis200dl.HPCF8

0b00

1

2

8

20

h3lis200dl.HPCF16

0b01

0.5

1

4

10

h3lis200dl.HPCF32

0b10

0.25

0.50

2

5

h3lis200dl.HPCF64

0b11

0.125

0.25

1

2.5
property high_pass_filter_mode : str

Sensor high_pass_filter_mode used to configure the high-pass filter cutoff frequency ft which is given by:

\[f_{t}= \frac{f_{s}}{6*HP_{c}}\]

Mode

Value

h3lis200dl.FILTER_NORMAL_MODE

0b00

h3lis200dl.FILTER_SIGNAL_FILTERING

0b01
property interrupt1_configuration

interrupt 1 configuration :return: interrupt 1 configuration

property interrupt1_duration

interrupt 1 duration set the minimum duration of the interrupt 1 event to be recognized. Duration steps and maximum values depend on the ODR chosen

Returns:

interrupt 1 duration

property interrupt1_latched

Latch interrupt request on the INT1_SRC register, with the INT1_SRC register cleared by reading the INT1_SRC register. Default value: 0. (0: interrupt request not latched; 1: interrupt request latched)

property interrupt1_source_register

interrupt 1 source register. Gives Interrupt 1 Information

property interrupt1_threshold

interrupt 1 threshold :return: threshold

property interrupt2_configuration

interrupt 2 configuration :return: interrupt 2 configuration

property interrupt2_duration

interrupt 2 duration set the minimum duration of the interrupt 2 event to be recognized. Duration steps and maximum values depend on the ODR chosen

Returns:

interrupt 2 duration

property interrupt2_latched

Latch interrupt request on the INT2_SRC register, with the INT2_SRC register cleared by reading the INT2_SRC register. Default value: 0. (0: interrupt request not latched; 2: interrupt request latched)

property interrupt2_source_register

interrupt 2 source register. Gives Interrupt 2 Information

property interrupt2_threshold

interrupt 2 threshold :return: threshold

property operation_mode : str

Sensor operation_mode allow the user to select between power-down and two operating active modes. The device is in power-down mode when the PD bits are set to “000” (default value after boot). Table shows all the possible power mode configurations and respective output data rates. Output data in the low-power mode are computed with the low-pass filter cutoff frequency defined by the data_rate

Mode

Value

h3lis200dl.POWER_DOWN

0b000

h3lis200dl.NORMAL_MODE

0b001

h3lis200dl.LOW_POWER_ODR0_5

0b010

h3lis200dl.LOW_POWER_ODR1

0b011

h3lis200dl.LOW_POWER_ODR2

0b100

h3lis200dl.LOW_POWER_ODR5

0b101

h3lis200dl.LOW_POWER_ODR10

0b110
property x_enabled : str

Sensor x_enabled In order to optimize further power consumption of the h3lis200dl, data evaluation of individual axes can be deactivated. Per default, all three axes are active.

Mode

Value

h3lis200dl.X_DISABLED

0b0

h3lis200dl.X_ENABLED

0b1
property y_enabled : str

Sensor y_enabled In order to optimize further power consumption of the h3lis200dl, data evaluation of individual axes can be deactivated. Per default, all three axes are active.

Mode

Value

h3lis200dl.Y_DISABLED

0b0

h3lis200dl.Y_ENABLED

0b1
property z_enabled : str

Sensor z_enabled In order to optimize further power consumption of the h3lis200dl, data evaluation of individual axes can be deactivated. Per default, all three axes are active.

Mode

Value

h3lis200dl.Z_DISABLED

0b0

h3lis200dl.Z_ENABLED

0b1