Introduction
============
.. image:: https://readthedocs.org/projects/adafruit-circuitpython-ds3502/badge/?version=latest
:target: https://docs.circuitpython.org/projects/ds3502/en/latest/
:alt: Documentation Status
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:target: https://adafru.it/discord
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:target: https://github.com/adafruit/Adafruit_CircuitPython_DS3502/actions/
:alt: Build Status
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:alt: Code Style: Black
CircuitPython library for the Maxim DS3502 I2C Potentiometer
Dependencies
=============
This driver depends on:
* `Adafruit CircuitPython <https://github.com/adafruit/circuitpython>`_
* `Bus Device <https://github.com/adafruit/Adafruit_CircuitPython_BusDevice>`_
* `Register <https://github.com/adafruit/Adafruit_CircuitPython_Register>`_
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-ds3502/>`_. To install for current user:
.. code-block:: shell
pip3 install adafruit-circuitpython-ds3502
To install system-wide (this may be required in some cases):
.. code-block:: shell
sudo pip3 install adafruit-circuitpython-ds3502
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-ds3502
Usage Example
=============
.. code-block:: python
from time import sleep
import board
import adafruit_ds3502
from analogio import AnalogIn
####### NOTE ################
# this example will not work with Blinka/rasberry Pi due to the lack of analog pins.
# Blinka and Raspberry Pi users should run the "ds3502_blinka_simpletest.py" example
i2c = board.I2C()
ds3502 = adafruit_ds3502.DS3502(i2c)
wiper_output = AnalogIn(board.A0)
while True:
ds3502.wiper = 127
print("Wiper set to %d"%ds3502.wiper)
voltage = wiper_output.value
voltage *= 3.3
voltage /= 65535
print("Wiper voltage: %.2f"%voltage)
print("")
sleep(1.0)
ds3502.wiper = 0
print("Wiper set to %d"%ds3502.wiper)
voltage = wiper_output.value
voltage *= 3.3
voltage /= 65535
print("Wiper voltage: %.2f"%voltage)
print("")
sleep(1.0)
ds3502.wiper = 63
print("Wiper set to %d"%ds3502.wiper)
voltage = wiper_output.value
voltage *= 3.3
voltage /= 65535
print("Wiper voltage: %.2f"%voltage)
print("")
sleep(1.0)
Documentation
=============
API documentation for this library can be found on `Read the Docs <https://docs.circuitpython.org/projects/ds3502/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_DS3502/blob/main/CODE_OF_CONDUCT.md>`_
before contributing to help this project stay welcoming.
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