Sorry to hear about your troubles Joe.. Is a pity as they look like nice displays. In the last few days I have acquired a DisplayTech 64128N COG display, I=20 think it is probably pretty similar - uses the ST7565 controller. I had a few problems getting it started - no example code around,=20 datasheet sadly lacking (didn't even say whether it was set up for=20 serial or parallel mode, what step up ratio, etc, etc) The ST7565 datasheet isn't too bad, but it can be set up a load of=20 different ways and there is no info on this in the 64128N datasheet. On the Displaytech site there was some hex code (didn't say what uC for)=20 and some assembler which was of some use. Until I got it working it=20 looked completely dead, absolutely nothing from it. I got to the point=20 where I signed up for the forum - that was 3 days ago and I'm still=20 waiting for my "approval" e-mail.. :-) Anyway, it is now working okay, and I have got it working with the MC=20 Graphics Library (another story there - had to set it up for a dsPIC30F=20 I'm using and the display - the library is only specified for PIC32, 24=20 and dsPIC33F, with a few larger displays) Would be happy to send you any of this stuff if you want to grab one of=20 these, just let me know. It needs cleaning up and sorting out, but the=20 basics work. On 11/04/2011 23:54, IVP wrote: > 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=3D8= 00364 > > 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 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .