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Hi all,

for the time being I've given up on the DOGM

I've spent another day with it and made no progress. I'm just not
seeing any activity on the Busy line. If you look at the power-up
screen shot you'll see data-07 is flat "low

---------
An internal reset circuit automatically initializes the ST7036 when
the power is turned on. The following instructions are executed
during the initialization. The busy flag (BF) is kept in the busy state
(BF =3D 1) until the initialization ends. The busy state lasts for 40 ms
after VDD rises to stable.
---------

I've tried everything I can think of, but I don't see anything. If Busy
isn't working, for whatever reason, then trying to set registers and
display anything is pointless

http://www.avrfreaks.net/index.php?name=3DPNphpBB2&file=3Dviewtopic&p=3D800=
364

Hints of 44780 code and yet the author says it works. I'm
seeing many variations that don't tally with ST7036 and/or
EA documentation

Which leads me to the ponderables

- are the specs particularly loose, anything works
- are the specs particularly fussy, you have to tinker
- is my LCD broken, so whatever I try won't work

Here's my latest power-up sequence variation, 18F2520

         call    ms100           ;PIC power-up delay

         bsf     trisc,7         ;Busy line as input
         bsf     psu             ;LCD power
         call    ms01
         call    ms01
         bsf     rst             ;LCD Reset
         nop
         bsf     csb             ;LCD CSB  (/CE)
         call    ms100           ;power up delay, 100ms

         bcf     rst             ;LCD hardware reset
         call    ms01            ;low for 1ms
         bsf     rst
         call    ms100           ;100ms delay

         bcf     csb             ;chip select low
         call    ms100           ;100ms delay

         bcf     rs              ;LCD control lines low
         nop
         bcf     rw
         nop
         bcf     en

         bcf     trisc,7
         call    lcd_init

Ralph Tischer of EA replies
---------
what a pitty. It also less then satisfying to me to hear such. On the
other  hand I do not have any PIC example for you (all companies
are forcing me to get but at the end nobody is willing to provide his
code for other people). And I'm not a software guy to comment
you the code; I'm sorry.

May be it's more a thing of hardware with you and not software,
who knows?
----------

The next time I place an order with Mouser I might get another,
but for now it's back to the tried-and-tested backlit 44780

If anyone does happen to get one working, I'd love to hear about
it. Oh, and a (free) look at the code would be appreciated ;-)))

Joe=

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