[Lcdproc] Does anyone have the extended spec sheet for the Noritake CU20045SCPB-W2J?

[Ethan Dicks]

Hi, all,

I'm trying to get a CU20045SCPB-W2J 4x20 VFD working with my lcd2usb
interface (thanks again, Michael!) - it sort-of works, but there seems
to be an initialization problem.  On power-on, the VFD is blank (no
splash screen from the onboard ATMEGA8).  If I fire up LCDd with the
recently-added lcd2usb 44780 driver, I get non-random garbage
characters (entirely repeatable).  If I then run "lcdproc K" for the
"bigclock", I see lots of spots that are elements of the bigclock
digits.  Next, kill lcdproc, then LCDd, the restart LCDd, and it all
works.

So it seems that I can verify that the lcd2usb subdriver in the 44780
driver works, but I'm having problems with lcd2usb firmware
specifically with a VFD, with which it was never tested.  I suspect
it's some parameter in the hd44780 emulation on the Noritake module
that's coming into play here, thus the need for the full spec sheet.
All I can find online is the 1-page summary.

This might be a more global issue with Noritake HD44780 4-bit
initialization - if anyone has had any issues with that, please feel
free to share what you did to fix it.  I might be able to learn
something from your experiences.

Thanks,

-ethan