BS2 sx and parallel 122 x 32 Graphics LCD

linock

Is there someone who have already tried this or have a little sample code ?

please no serial as my lcd is a parallel HY-12232. Here are the technical specs

www.selectronic.fr/upload/produit/fichetechnique/86901.pdf

I find this thing is confusing and i don't know if i can use it as a 'normal' parallel lcd.
I found there's also mentionned C1 and C2 what are those things ?
in other words how to i make work this stuff with the bs2 sx ?
Thank you for your help

Paul Baker

I find this thing is confusing and i don't know if i can use it as a 'normal' parallel lcd.
It appears that the answer is no, I see no means for providing ASCII data display, it appears to only be a graphical display, meaning you would have to update the display pixel by pixel.

I found there's also mentionned C1 and C2 what are those things ?

I see no C1 and C2, but CS1 and CS2 are chip selects for each of the driver chips.

in other words how to i make work this stuff with the bs2 sx ?
You could use a BS2sx with the display, but like I mentioned before you would have to update the display in a graphical form meaning storing a font table in memory etc.

If you are looking for a (relatively) inexpensive graphic LCD which supports both graphic and text modes, you may want to consider: http://www.allelectronics.com/cgi-bin/item/LCD-101/365/256_X_128_LCD_PANEL_.html

I haven't used it, but I have looked at the spec sheet several times, and people report its not that difficult to interface with and Duane Becker has a site covering using the dispaly here: http://www.sover.net/~snowleop/gdisp3 and also offers a daughterboard to do more things like line drawing etc.

You may also want to consider Matrix Orbital displays: http://www.matrixorbital.com/index.php?cName=lcd-mop-graphic-lcds·and Crystal Fontz: http://www.crystalfontz.com/products/index-grph.html Though I haven't personally confirmed if any of thier LCDs I pointed to support ASCII mode updating.



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Post Edited (Paul Baker) : 2/3/2006 5:02:03 PM GMT

linock

Thank you for all those informations, i'll see what i can do with it and you are right, it was CS1 and CS2 in the specs.
Next time i won't buy again this horrible LCD thing but for now it's too late.

linock

i found this, i don't know if it could be usefull for other people anyway this will give a little contribution to the future archive www.geocities.com/dinceraydin/djgfxlcdsim/djgfxlcdsim.html

Paul Baker

You can still use the LCD, theres nothing keeping you back, it just doesn't have a Text mode input. You can make a weekend project of creating a text mode software interface on your BS2, where instead of supplying the ASCII to the LCD, you send it to a subroutine which translates it into a graphical output for the LCD. You'd use a data table stored in the BS2 which has the bit masks for each ASCII character you want to display.

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linock

I thought about uploading font table in it, but this is very angry with ressources and i have a simple sx2 i planned to use as a data-logger for my car which has not OBD compliant plug.
I'll rather try to see if i can do something with the shop where i bought as this lcd is still untouched, no soldering on it. With a little luck maybe will they accept to swap this with one serial. However thank you for your kind replies and ideas