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Written by Tevo on 2024-12-29 at 18:06

Copious levels of yak-shaving have led me into writing a pure Ada library for interfacing with the Raspberry Pi's GPIO. It implements Ada_Driver_Library's HAL.GPIO interfaces, so you can easily offload your project to a cheap microcontroller when the time comes.

You can get it here: https://git.sr.ht/~tevo/rpio

It is not yet on Alire, I'll look into submitting it after a few more days of dogfooding.

Now, back to implementing ADB, so I can...

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Written by Tevo on 2024-12-29 at 18:09

I was slightly disappointed I couldn't represent GPSET/GPCLR using Ada's bit-level data modelling facilities, but it seems the BCM8235 gets really upset when you read from it's write-only registers, and I couldn't find any way to tell GNAT to avoid reading from a given memory region :(

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