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Jun 29, 2021
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add a note about possible builtin pkg #68

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11 changes: 11 additions & 0 deletions README.rst
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Expand Up @@ -20,6 +20,17 @@ changes such as mode. For I2C, it manages the device address.

.. _bus_device_installation:

.. note:: On microcontroller boards using CircuitPython v6.3.0 or newer, the firmware
may already have the ``adafruit_bus_device`` package builtin, thus there may be no
need to add this package to your CIRCUITPY drive's "lib" directory. If both the
builtin and add-on ``adafruit_bus_device`` packages are present, then some
libraries that require this package *might* have problems importing it.

Please check the `CircuitPython documentation's "module support matrix"
<https://circuitpython.readthedocs.io/en/latest/shared-bindings/support_matrix.html>`_
to make sure that your board's firmware does include the builtin ``adafruit_bus_device``
package.

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

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