Introduction
============
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:target: https://docs.circuitpython.org/projects/max31856/en/latest/
:alt: Documentation Status
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:target: https://adafru.it/discord
:alt: Discord
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:target: https://github.com/adafruit/Adafruit_CircuitPython_MAX31856/actions/
:alt: Build Status
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:target: https://github.com/psf/black
:alt: Code Style: Black
A CircuitPython driver for the MAX31856 Universal Thermocouple Amplifier
Dependencies
=============
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://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-max31856/>`_. To install for current user:
.. code-block:: shell
pip3 install adafruit-circuitpython-max31856
To install system-wide (this may be required in some cases):
.. code-block:: shell
sudo pip3 install adafruit-circuitpython-max31856
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-max31856
Usage Example
=============
.. code:: python3
import board
import digitalio
import adafruit_max31856
# Create sensor object, communicating over the board's default SPI bus
spi = board.SPI()
# allocate a CS pin and set the direction
cs = digitalio.DigitalInOut(board.D5)
cs.direction = digitalio.Direction.OUTPUT
# create a thermocouple object with the above
thermocouple = adafruit_max31856.MAX31856(spi, cs)
# measure the temperature! (takes approx 160ms)
print(thermocouple.temperature)
# alternative (non-blocking) way to get temperature
thermocouple.initiate_one_shot_measurement()
# <perform other tasks>
# now wait for measurement to complete
while thermocouple.oneshot_pending:
pass
print(thermocouple.unpack_temperature())
Documentation
=============
API documentation for this library can be found on `Read the Docs <https://docs.circuitpython.org/projects/max31856/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/siddacious/Adafruit_CircuitPython_MAX31856/blob/main/CODE_OF_CONDUCT.md>`_
before contributing to help this project stay welcoming.
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