Touch ui ftdi eve fixes

[sl1pkn07]

Fix little typos and back to use default PWM_HZ since the brightness dim is disabled for Fysetc TFT81050, this not need anymore. also 0x2710 can damage the backlight in this panel (due @RudolphRiedel recomendations in #17644 (comment). seems is a hardware limitation)

[RudolphRiedel]

What about this:
screen_data.InterfaceSettingsScreen.brightness = constrain((value * 128UL) / 0xFFFF, 1, 11);

I have not tested it but it looks to me like this limits the value to a range from 1....11 which is completely broken.

[sl1pkn07]

is one of things i not touch because idk how code it, also i disable the dim for my panel so i can't test

@thinkyhead ?

[RudolphRiedel]

As I wrote, just go with:
screen_data.InterfaceSettingsScreen.brightness = max(11, (value * 128UL) / 0xFFFF);

I tried it and it works, 11 is low enough for my display as well.
I really do not know why my line with the "max(1, (value * 128UL) / 0xFFFF);" got replaced so fast.

I tried the other line now and as I expected it is not working, I can not even change the value between 1 and 11, the slider is just limited to 11.

[sl1pkn07]

done

[thinkyhead]

Thanks for the corrections. I changed code according to answers to my questions and comparing code from two sources. Apparently I was mistaken to believe that the brightness should range between 1 and 11.