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        "author": "Shenghao Yang",
        "author_email": "me@shenghaoyang.info",
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            "License :: OSI Approved :: MIT License",
            "Programming Language :: Python :: 3.6",
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        "description": "apa102_gpiod\n------------\nA python library for accessing ``APA102`` addressable LEDs using ``libgpiod``,\na library used to access the userspace gpio character device.\n\nUseful for situations where you need to drive LEDs attached to non-SPI capable\nI/O lines, or when the in-kernel ``spi-gpio`` driver is not available (example:\nPimoroni Blinkt on the default kernels from mainstream distributions)\n\nThe usage of this library is probably frowned upon by virture of\n``linux/Documentation/driver-api/gpio/drivers-on-gpio.rst``, so go and pressure\nthe Raspberry Pi kernel devs to include ``spi-gpio``, so we wouldn't have to\nresort to custom out-of-tree kernels or _evil bitbanging in userspace_!\n\nPrerequisites\n-------------\n- Linux Kernel >= ``4.8``\n- ``libgpiod`` >= ``039b301b173c78664775d1ea93493825ef80c9d4``\n- Python >= ``3.6``\n\nInstallation\n------------\n- ``libgpiod``\n    - ``https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/``\n    - Remember to ``--enable-bindings-python`` when configuring.\n- ``apa102_gpiod``\n    - ``pip install apa102_gpiod``\n\nTests\n-----\n- Tests can be found in the ``test`` directory.\n    - Only unit tests are present now, more tests welcome.\n- Use your favourite test runner to run the tests, or:\n    - ``pip install setuptools``\n    - ``pip install pytest``\n    - ``python setup.py test``\n\n\nPerformance\n-----------\nSince we're accessing the GPIOs through the character device and not through\nsome memory-mapped magic, performance is guaranteed to be lower. Here are some\ntest results:\n\nDevice | Software                        | Achieved data rate (``kByte/s``)\n-------| --------------------------------| --------------------------------\nRPI3 B | Arch Linux ARM Linux 4.14.37    | 13962\n\nCaveats\n-------\n- No clock rate control is implemented, since the achieved data rates are\n  way below the maximum data rates supported by the ``APA102``.\n    - File an issue report if needed.\n\nExamples\n--------\nSee the ``examples`` directory.\n\nLicensing\n---------\nThis project is licensed under the *MIT License*.\nSee ``LICENSE.txt`` for more details.",
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