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Helper library for the MCP4728 I2C 12-bit Quad DAC
This driver depends on:
Adafruit CircuitPython <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://circuitpython.org/libraries>
_.
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI <https://pypi.org/project/adafruit-circuitpython-mcp4728/>
_. To install for current user:
.. code-block:: shell
pip3 install adafruit-circuitpython-mcp4728
To install system-wide (this may be required in some cases):
.. code-block:: shell
sudo pip3 install adafruit-circuitpython-mcp4728
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-mcp4728
.. code-block:: python3
import board
import adafruit_mcp4728
i2c = board.I2C() # uses board.SCL and board.SDA
mcp4728 = adafruit_mcp4728.MCP4728(i2c)
mcp4728.channel_a.value = 65535 # Voltage = VDD
mcp4728.channel_b.value = int(65535/2) # VDD/2
mcp4728.channel_c.value = int(65535/4) # VDD/4
mcp4728.channel_d.value = 0 # 0V
mcp4728.save_settings() # save the current values to the eeprom,making them the default on power up
API documentation for this library can be found on Read the Docs <https://docs.circuitpython.org/projects/mcp4728/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>
_.
Contributions are welcome! Please read our Code of Conduct <https://github.com/adafruit/Adafruit_CircuitPython_MCP4728/blob/main/CODE_OF_CONDUCT.md>
_
before contributing to help this project stay welcoming.