How to turn od LED

Hi everyone,
I've never had contact with Linux before, but I need to make a simple C program that lights up the LEDs with a delay of 0.5 seconds. After a few hours, I found nothing about it. I know the C language, but I don't know what environment to use in Linux and how to connect the HAL architecture in my project, which I can't understand. Thank you for your help and best regards.

It is hard to help when you give us no viable info, but still,
What hardware?
What is the LED going to be driven?
If you are trying to use LinuxCNC on a PC with a parallel port, something like
M64 P0
G04 P0.5
M65 P0
will do that

M64 P0
G64 P0.5
M65 P0
will do that

Tomo  just to note, G4 is for time delay?

Masiwood123 wrote:

M64 P0
G04 P0.5
M65 P0
will do that

Tomo  just to note, G4 is for time delay?

Oh cr@p! To much tuning today, sorry.
Editing and correcting.
Thank you for the tip,
Hvala

I also started 10 things and there is no end.. browsing the forum is an escape from obligations and interesting.. I always learn something:)

Sorry, I'm already explaining what I'm capable of.
I am using LinuxCNC on PC. The LEDs are to be turned on on the BECKHOFF EK1818 converter using the EtherCAT bus. This module is powered by a 24V DC power supply. Unfortunately, I don't know more details. That's the task I got.

tommylight wrote:

It is hard to help when you give us no viable info, but still,
What hardware?
What is the LED going to be driven?
If you are trying to use LinuxCNC on a PC with a parallel port, something like
M64 P0
G04 P0.5
M65 P0
will do that
 

Sorry, I'm already explaining what I'm capable of.
I am using LinuxCNC on PC. The LEDs are to be turned on on the BECKHOFF EK1818 converter using the EtherCAT bus. This module is powered by a 24V DC power supply. Unfortunately, I don't know more details. That's the task I got.

Moved to "Ethercat" section.

nobody knows anything?

We don't know what you have done yet...

-Did you already install the Etherlab master?
-Is Ethercat working by the commandline tools?
-Did you install linuxcnc-ethercat?
-Which Linux / Linuxcnc?
-for EK1818 you will have to create your own pdo configuration with the use of the "generic" slave.

As I am reading from your first post, you are trying to controll the led with an C Programm and this is not CNC related, then you are here in the wrong place.
Look at IGH Etherlab for creating your own ethercat applications in C-Language