adafruit-circuitpython-trellis

Introduction

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This library will allow you to control the LEDs and read button presses on the Adafruit Trellis Board <https://www.adafruit.com/product/1616>_. It will work with a single Trellis board, or with a matrix of up to 8 Trellis boards.

For more details, see the Adafruit Trellis Learn Guide <https://learn.adafruit.com/adafruit-trellis-diy-open-source-led-keypad>_.

Dependencies

This driver depends on:

• Adafruit CircuitPython 2.0.0+ <https://github.com/adafruit/circuitpython>_
• Bus Device <https://github.com/adafruit/Adafruit_CircuitPython_BusDevice>_

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle <https://github.com/adafruit/Adafruit_CircuitPython_Bundle>_.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI <https://pypi.org/project/adafruit-circuitpython-trellis/>_. To install for current user:

.. code-block:: shell

pip3 install adafruit-circuitpython-trellis

To install system-wide (this may be required in some cases):

.. code-block:: shell

sudo pip3 install adafruit-circuitpython-trellis

To install in a virtual environment in your current project:

.. code-block:: shell

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-trellis

Usage Example

See examples/trellis_simpletest.py <https://github.com/adafruit/Adafruit_CircuitPython_Trellis/examples/trellis_simpletest.py>_ for full usage example.

.. code:: python

import time
import busio
from board import SCL, SDA
from adafruit_trellis import Trellis

# Create the I2C interface
i2c = busio.I2C(SCL, SDA)

# Create a Trellis object for each board
trellis = Trellis(i2c) # 0x70 when no I2C address is supplied

# Turn on every LED
print('Turning all LEDs on...')
trellis.led.fill(True)
time.sleep(2)

# Turn off every LED
print('Turning all LEDs off...')
trellis.led.fill(False)
time.sleep(2)

Documentation

API documentation for this library can be found on Read the Docs <https://docs.circuitpython.org/projects/trellis/en/latest/>_.

For information on building library documentation, please check out this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>_.

Contributing

Contributions are welcome! Please read our Code of Conduct <https://github.com/adafruit/adafruit_CircuitPython_Trellis/blob/main/CODE_OF_CONDUCT.md>_ before contributing to help this project stay welcoming.