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CircuitPython library for Adafruit Trellis boards.

Project description


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This library will allow you to control the LEDs and read button presses on the Adafruit Trellis Board. 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.


This driver depends on:

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

Usage Example

See examples/ for full usage example.

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...')

# Turn off every LED
print('Turning all LEDs off...')


Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Building locally

Zip release files

To build this library locally you’ll need to install the circuitpython-build-tools package.

python3 -m venv .env
source .env/bin/activate
pip install circuitpython-build-tools

Once installed, make sure you are in the virtual environment:

source .env/bin/activate

Then run the build:

circuitpython-build-bundles --filename_prefix adafruit-circuitpython-trellis --library_location .

Sphinx documentation

Sphinx is used to build the documentation based on rST files and comments in the code. First, install dependencies (feel free to reuse the virtual environment from above):

python3 -m venv .env
source .env/bin/activate
pip install Sphinx sphinx-rtd-theme

Now, once you have the virtual environment activated:

cd docs
sphinx-build -E -W -b html . _build/html

This will output the documentation to docs/_build/html. Open the index.html in your browser to view them. It will also (due to -W) error out on any warning like Travis will. This is a good way to locally verify it will pass.

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Source Distribution

adafruit-circuitpython-trellis-1.2.0.tar.gz (22.3 kB view hashes)

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