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How do you directly interface with GPIO in Python? (lemmy.world)

submitted 9 months ago by j4k3@lemmy.world to c/programming@programming.dev

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Like let's say I have a few old HP alphanumeric LED displays that have a simple bit pattern protocol. I've gotten them working in Arduino a long time ago. If I can find some unused pins how can I bit bang them into a custom protocol from user space using pins that may be unrelated as far as I/O ports on a modern computer? Is it even possible without a kernel module? Am I stuck with using a serial channel like SPI/I2C/UART to talk to an external controller?

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[–] martinb@lemmy.sdf.org 5 points 9 months ago

I recall that there is a USB GPIO dongle which gives you a bunch of pins to play with. You would have to hunt around to find it though.