LCD on ST7567 132x48 dot

[Pjatruha]

Please help me with connecting the LCD to the ST7567 132x48 dot from the Grandstream IP phone.
I uploaded an example to arduino nano GraphicsTest.ino
I selected this line in the constructor:
U8G2_ST7567_PI_132X64_F_4W_SW_SPI u8g2(U8G2_R0, /4pin_DISP_SCLK clock=/ 13, /5pin_DISP_SDA data=/ 11, /1pin_DISP_CS1 cs=/ 7, /3pin_DISP_A0 dc=/ 9, /2pin_DISP_RES reset=/ 8); // Pax Instruments Shield, LCD_BL=6

The display shows something, but very faintly. Almost unnoticeable
Here is the link to the video.

I uploaded example ContrastTest.ino.
The numbers are very faintly visible on the display. I tried to record a video on my phone, but the phone's camera didn't see anything.
Link to the display in the online store


I'm sorry for my English. I use an online translator

[Pjatruha]

I found an error. The Reset pin cannot simply be connected to 3.3 volts. I connected the Reset via the level converter to pin 8 of the arduino and the display came to life.
I found out that the acceptable contrast level is 15(u8g2.setContrast(15);) After that, it became clear that part of the image did not fit into the screen. But this is understandable, because I used the designer for the 132x64 display. If you use a constructor with a smaller number of points, for example, this one:
U8G2_ST7567_ERC132_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=/ 13, / data=/ 11, / cs=/ 10, / dc=/ 9, / reset=*/ 8);
then nothing is displayed on the display.
Could you tell me how to add my display to your library? Or maybe you can do it yourself...

[olikraus]

Great you fund the issue by yourself. Of course the contrast setting will be different for each and every display type.
Can you provide a screenshot of a working constructor, where the geometry is not correct?
We can then try to fix this together and create a new constructor for this display type.

[Pjatruha]

This is what is displayed on the display when loading the "U8g2Logo" example from the library into arduino.

If you specify a height of 48 instead of 64 in u8x8_d_st7567.c file in line 123, then the following picture will appear on the display.

I also changed the value in 141 lines. Specified the value for BIAS 1/9 U8X8_C(0x0a2). With this value, the picture turns out better - inactive pixels (dots) are not highlighted