When Keyboard Key is in Hold, then Webvisu is extreme slow and latent

2023-09-20T06:40:11.503000Z

I'm not really sure what you are trying to do, but maybe you are referring to using the CmpCharDevice library?

When you "open" the connection to a device, you can pass flags. What helped me is to set the non-blocking flag.

I'm not sure if this is what you are referring to, but maybe it helps:

dFlags: DINT := CmpCharDevice.ACCESS_MODE.O_RDONLY + DINT#4000; // see details for flags: http://linux.die.net/man/2/open, + DINT#4000 is for non-blocking

hDevice := CmpCharDevice.CDOpen(szFilename, dFlags, Result);

When Keyboard Key is in Hold, then Webvisu is extreme slow and latent

2023-09-05T20:24:27.292000Z

Hi Tyro
Did you resove your problem? I have the same issue.

Richard

When Keyboard Key is in Hold, then Webvisu is extreme slow and latent

2023-01-16T12:06:03.756000Z

Hello Everybody,

i have a very special problem!

The System is

Rasperry Pi 4
Codesys MC for Raspberry 4.6 with Webvisu per Touchscreen.

I am reading the Keyboard events with evdev for some other things. The problem is when a keyboard Key is on hold, Codesys Touch Screen reaction is extreme latent/slow. Though i can see in events log that the touch events are registered.
Any Help!
Regards
Singh

Recent posts to When Keyboard Key is in Hold, then Webvisu is extreme slow and latent

When Keyboard Key is in Hold, then Webvisu is extreme slow and latent

When Keyboard Key is in Hold, then Webvisu is extreme slow and latent

When Keyboard Key is in Hold, then Webvisu is extreme slow and latent