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Wrapper library for debugging I2C.


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

This example uses the LIS3DH accelerometer. This lib can be used with any I2C device. Save the code to your board.

import adafruit_lis3dh
from adafruit_debug_i2c import DebugI2C
import busio
import board
import digitalio

i2c = DebugI2C(busio.I2C(board.SCL, board.SDA))
int1 = digitalio.DigitalInOut(board.ACCELEROMETER_INTERRUPT)
accelerometer = adafruit_lis3dh.LIS3DH_I2C(i2c, address=0x19, int1=int1)


for i in range(2):


API documentation for this library can be found on Read the Docs.

For information on building library documentation, please check out this guide.


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

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

source .venv/bin/activate

Then run the build:

circuitpython-build-bundles --filename_prefix adafruit-circuitpython-debug_i2c --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 .venv
source .venv/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.

Table of Contents


Indices and tables