Fix ProUI LCD off freezing

[classicrocker883]

Description

When using ProUI, and the LCD turns off, turning the knob may bring the LCD screen back on, however it stays frozen. The only way to bring this back is to press in the knob.

This PR makes it so pressing in the knob or turning it not only returns the screen back on, but functionality.

Requirements

• Ender3-V2 DWIN type LCD
• ProUI

Benefits

No more frustration when turning the knob and finding a frozen screen.

Configurations

Related Issues

[thinkyhead]

The first click when the display is asleep should probably be ignored. If it is not, that adjustment should be made.

[classicrocker883]

very nice, was this tested? i can do that right now

[classicrocker883]

oh. also this PR might fix #27722

I believe that was the issue, but no response from OP confirming.

[classicrocker883]

@thinkyhead there is a slight issue. so the LCD should come back to full functionality whether the knob is turned or pressed in. currently, this gives partially full functionality. so when the screen is off, turning the knob or pressing the button does bring the screen back on, and you can navigate freely (like normal) however, you have to press the knob in (again) in order to work like it did when the screen was on.

[classicrocker883]

should I make a seperate PR?, I fixed this by reverting

  void MarlinUI::_set_brightness() {
-   if (!backlight) wait_for_user = true;
-   dwinLCDBrightness(backlight ? brightness : 0);
  }


  void MarlinUI::_set_brightness() {
+   if (backlight) {
+     dwinLCDBrightness(brightness);
+     wait_for_user = false;
+   }
+   else {
+     dwinLCDBrightness(0);
+     wait_for_user = true;
+   }
  }

[thisiskeithb]

should I make a seperate PR?

Yes. The PR you’re commenting in has already been merged and closed.