Signal()

Projects Programming
1

Hey Guys
i'm currently working on a project where i have modeltrain signals. I sumbled upon the function signal()

  1. what does it do
  2. how can i define it in an enum without me getting the error of primary expression

if it's a bit xy sry
Thanks

2

I sumbled upon the function signal()

You have the code. We don't

Please post a full sketch and/or details of where you found the function

3

Sorry, ive got the problem solved with the error an declaration
EDIT: just the normal function signal() i think its native since i dont have any libarys installed

4 
signal()

That cannot be the solution as that line of code will not compile

i think its native since i dont have any libarys installed

Please post the sketch where the function is used as it is not a "native" function

5

Btw it is native function of cpp
https://en.cppreference.com/w/cpp/utility/program/signal
Regards

6

To quote from C++ Signal Handling

Signals are the interrupts delivered to a process by the operating system which can terminate a program prematurely. You can generate interrupts by pressing Ctrl+C on a UNIX, LINUX, Mac OS X or Windows system.

The Arduino does not have an Operating System. Can you see a problem ?

In view of what you said

i'm currently working on a project where i have modeltrain signals.

were you hoping that the signal() function would provide functionality to your program ?

I note that you have still not posted a sketch that uses the function, but I am not surprised bearing in mind what the function does

7

From the AVRGCC library manual:

#define SIGNAL ( vector )

Introduces an interrupt handler function that runs with global interrupts initially disabled.

This is the same as the ISR macro without optional attributes.

Deprecated:
Do not use SIGNAL() in new code. Use ISR() instead.

8

Sorry if it was unclear it was a general question this was not associated no my code that im currently on