I succeed to get the DOGM128 Display running. I tried a lot of things until I found a tantal capacitor soldered in wrong polarity.
So I get now the “Ready”-Message on my display, but the backlight is not on. Should it be on without a special command, or how can I switch it on?
Please, can somebody give me an answer? Should the Backlight on my DOGM128 Display be on by default after booting the LPC17? Or how can I switch it on?
The backlight LEDs are directly connected between Vdd (anodes) and B- (cathodes), there is no SW control for the brightness.
Did you already try to adjust the “Luminance” trimpot P1 on the MBHP_CORE_LPC17 module?
Best Regards, Thorsten.
This was it exactly! I don’t knew the function of these pots. P2 is for the contrast I think.
So TK, thanks a lot for your help.
fine! 
Best Regards, Thorsten.