[GreenKeys] Raspberry Pi loop interface

[californiaelectric at gmail.com]

> On Nov 13, 2024, at 6:46 PM, John, W9DDD <w9ddd at tapr.org> wrote:
> 
> 1. What I/O pins on the 40 header did you use?

I don’t remember which pins I used, but

> 
> 2. Were you able to use any of the internal UARTs or did you do bit banging?

I bit bang them directly from python code. I figured why bother with serial io, usb dongles, etc with a speed that low. I do the same for reading the current loop. Works great, even an ancient pi2 was fast enough to do this from python.

G