SPI and INTerrupts on PocketBeagle

General Discussion
1

Hey everyone,

I’m looking to make a radio receiver (433MHz) on the pocketbeagle with code in C.

I have SPI sort of setup with the spidev code, but if there is a better library, I want to know about it!

My problem begins with the interrupt setup (I mean code) , because I’ve only found a javascript sketch for that.
Is there a C library including interrupt support?

Thanks, best
Chris

2

hi there again

i’ve found the adafruit bbio python library, but does can i use the event detection sort of like an interrupt subrutine?

Chris

3

I’vve also found a PyBBIO library which look promising
haven’t tested yet

4

PyBBIO was before the pocketbeagle, think it doesnt support, but havent tested.

Adafruit BBIO python works in first tests. SPI and IRS both. With latest debian.

5

Receiving interrupts has nothing to do with SPI, but the GPIO subsystem can pass edge interrupts (configurable: rising edge, falling edge, or both) via a file descriptor which you can then integrate in whatever event loop you like.

I’ve written a tiny C library for sysfs gpio that demonstrates this, including how to integrate with sd-event (libsystemd’s event loop).