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[on:]

I would like to connect my 12864ZW display to Arduino. I believe it's ST7920 (http://www.digole.com/images/file/Digole_12864_LCD.pdf).

To initialize the library I have to remove comment from:
U8GLIB_ST7920_128X64 u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, U8G_PIN_NONE, U8G_PIN_NONE, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16

The problem is I have no DI pin (the attached spec doesn't have it as well). I've already broken one display so I would like to be sure what I'm doing this time ;-)

[Reply #1 on:]

The data/instruction pin (DI) might have a different name. In your case the corresponding pin is RS (register select).
Also remember to set PSB pin to "high" (connect to 5V)

Oliver

[Reply #2 on:]

I forgot to mention, that there is a pending bug in u8glib where the reset pin is not handled correctly.
http://code.google.com/p/u8glib/issues/detail?id=133

You could:
- use a RC network for reset
- switch to SPI interface
- wait for the next official u8glib release (not scheduled yet)
- let me know if you need a prerelease

Oliver

[Reply #3 on:]

Thank you Olikraus for your time & help.

[Reply #4 on:]

I have added a bugfix release on the u8glib download page.
http://code.google.com/p/u8glib/downloads/list

Oliver

[Reply #5 on:]

This new version works perfect on QC12864B in parallel mode.

Olikraus thanks for this great job!

[Reply #6 on:]

Thank you for the update. It works well on my LCD as well.

[Reply #7 on:]

Thanks for the feedback.

Oliver

[Reply #8 on:]

I have this GLCD: http://img713.imageshack.us/img713/4055/lcdgrafico128x641.jpg.
With this, how can I use your library?
Thanks oliver, it is very important for me.

[Reply #9 on:]

Hi

You can use the serial interface (PSB = GND) with

Code:

U8GLIB_ST7920_128X64_1X(E, R/W, RS , rst)

where the four arguments are the Arduino pin numbers, which are connected to the corresponding pin of your display.

Oliver

[Reply #10 on:]

Thanks Oliver!