C Binding non-void callback

[mavu]

I’m not sure I understood all that correctly, but you can check out this thread, where I invent a Rube-Goldberg machine to let an application talk to itself through a Unix-Socket.

(using C-lib that takes a callback but has no data-pointer)

[Help] c binding of function that takes callback

Hi tldr; how do I “interface” (call functions, etc) with the outside from inside a Proc passed as a callback to a c function? I am trying to use the wiringPi library in crystal on a raspberry pi and I have a problem with a function that requires a callback it has the following signature: extern int wiringPiISR (int pin, int mode, void (*function)(void)) ; What works so far is this: module Wiringtest @[Link("wiringPi")] lib LibwiringPi fun wiringPiSetupSys : Int32 fun wiringPiISR…

Not sure if you want to go there, but maybe it can offer some ideas?