ESP32-CAM built-in flash light management

[qqq585]

Hi!

Guys please help to understand how to enable/disable that internal flash...

I can manage with internal diode LED1 via GPIO33 just using digitalWrite(33, HIGH) - but that doesn't work with GPIO 4.
As I understood GPIO4 is splitted somehow with an SD-Card slot. Point is I do not have the card itself, and don't need it in my project.

So is there any way to manage it somehow? Kind of sd-card emulating, or any other way?

P.S. if I just connect two pins physically - it flashes. May be there is any easy way to do that programmatically ?