Using NUCLEOL053 i could not change built-in lcd driver contrast level, anyone can help me?

[HAkba.1]

I'm using NUCLEOL053 with a customize Segment LCD.

LCD Segments work with 2.7v and for that i was not able to use other contrast output levels from lcd driver. I also tried using PULSE_ON duration and DEAD_TIME attributes but it was not helpful either and could not get the desired contrast level.

I'd be really glad if someone help me.

Thank you in advance.

(I apologize if i'v asked my question in wrong category)

[waclawek.jan]

Did you try different voltage levels? Do you use internal or external bias voltage? Read out content of LCD module registers and check them against the reference manual.

JW