Allow passing GPIOs only to allow running on GPIO Expander #28
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FoamyGuy
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Oct 22, 2025
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Looks good to me. Thanks for adding this flexibility.
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Updating https://github.com/adafruit/Adafruit_CircuitPython_74HC595 to 1.5.0 from 1.4.9: > Merge pull request adafruit/Adafruit_CircuitPython_74HC595#28 from makermelissa/main
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I needed to run this through a GPIO expander (the MCP23017 in my case). However, neither the library nor busdevice allows passing anything except digitalio.DisplayInOut. These changes allow passing a DigitalInOut created by the MCP230XX library as well as controlling it just using 3 GPIO. I created an example to show usage.