https://github.com/tuupola/micropython-lis2hh12

MicroPython I2C driver for LIS2HH12 3-axis accelerometer
https://github.com/tuupola/micropython-lis2hh12

esp32 micropython

Last synced: 1 day ago
JSON representation

MicroPython I2C driver for LIS2HH12 3-axis accelerometer

• Host: GitHub
• URL: https://github.com/tuupola/micropython-lis2hh12
• Owner: tuupola
• License: mit
• Created: 2017-09-27T21:44:13.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2024-02-23T08:32:34.000Z (9 months ago)
• Last Synced: 2024-05-01T22:03:54.049Z (6 months ago)
• Topics: esp32, micropython
• Language: Python
• Size: 13.7 KB
• Stars: 9
• Watchers: 4
• Forks: 3
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE.md

Awesome Lists containing this project

• awesome-mpython - micropython-lis2hh12 - LIS2HH12 3轴加速度计 (精选驱动库 / 传感器)
• awesome-micropython - micropython-lis2hh12 - I2C driver for LIS2HH12 3-axis accelerometer. (Libraries / Sensors)

README

        
# MicroPython LIS2HH12 I2C driver

MicroPython library for accessing the [STMicroelectronics LIS2HH12](http://www.st.com/en/mems-and-sensors/lis2hh12.html) 3-axis accelerometer over

I2C. The LIS2HH12 is an ultra-low-power high-performance three-axis linear accelerometer belonging to the “pico” family. It has full scales of ±2g/±4g/±8g and is capable of measuring accelerations with output data rates from 10 Hz to 800 Hz.

## Usage

Simple test with never ending loop.

```python

import utime

from machine import I2C, Pin

from lis2hh12 import LIS2HH12

i2c = I2C(scl=Pin(26), sda=Pin(25))

sensor = LIS2HH12(i2c)

print("LIS2HH12 id: " + hex(sensor.whoami))

while True:

    print(sensor.acceleration)

    utime.sleep_ms(1000)

```

By default the library returns 3-tuple of X, Y, Z axis acceleration values in m/s^2 which is the SI standard. To get the acceleration values in g instead set the scale factor to `SF_G` in the constructor.

```python

from machine import I2C, Pin

from lis2hh12 import LIS2HH12, SF_G

i2c = I2C(scl=Pin(26), sda=Pin(25))

sensor = LIS2HH12(i2c, sf=SF_G)

```

More realistic example usage with timer. If you get `OSError: 26` or `i2c driver install error` after soft reboot do a hard reboot.

```python

import micropython

from machine import I2C, Pin, Timer

from lis2hh12 import LIS2HH12

micropython.alloc_emergency_exception_buf(100)

i2c = I2C(scl=Pin(26), sda=Pin(25))

sensor = LIS2HH12(i2c)

def read_sensor(timer):

    print(sensor.acceleration)

print("LIS2HH12 id: " + hex(sensor.whoami))

timer_0 = Timer(0)

timer_0.init(period=1000, mode=Timer.PERIODIC, callback=read_sensor)

```

## License

The MIT License (MIT). Please see [License File](LICENSE.md) for more information.