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trying different board, same problem...

Lucky

New member
Sorry if i'm posting this in the wrong area, I'm really trying to understand this stuff, but i'm not getting too far...

I am trying to get this USB LCD to work, but having the same problems i had with the other serial one i had, (only backlight on not even a welcome message) BUT i have info on this one :
http://www.topwaydisplay.com/Product/LCDM-Graphics/index.htm
it is: lm19264fby

Please tell me this will work with LCD Studio... i've had no love so far...

i have info on the controler it's an Atmel at89s52 http://www.atmel.com/dyn/resources/prod_documents/doc1919.pdf

Speak slowly to me, lol (type slowly? :) )

Thanks!! --Lucky
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... I am trying to get this USB LCD to work ...
From what I can see in the pix in your other thread, there is nothing to suggest a USB interface. However, I can see a header labeled "RS-232" (its hard to tell, as the pix are very blury).

There is probably a proprietary async serial protocol from the DMX to the Atmel cpu, which then controls the communication to the LCD. The LCD specs look pretty ordinary.

Wouldn't it be a hoot if the serial protocol was the same as the CFA 632/633/634/635. That's not likely though, unless the display was used for text only.
 

Lucky

New member
and, sorry to be so lost about it, but i'm hoping to just find some software that works with it, i'm trying to understand this stuff, but...just don't get it... :/
 
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ArtemisGoldfish

New member
Sorry if i'm posting this in the wrong area, I'm really trying to understand this stuff, but i'm not getting too far...

I am trying to get this USB LCD to work, but having the same problems i had with the other serial one i had, (only backlight on not even a welcome message) BUT i have info on this one :
http://www.topwaydisplay.com/Product/LCDM-Graphics/index.htm
it is: lm19264fby

Please tell me this will work with LCD Studio... i've had no love so far...

i have info on the controler it's an Atmel at89s52 http://www.atmel.com/dyn/resources/prod_documents/doc1919.pdf

Speak slowly to me, lol (type slowly? :) )

Thanks!! --Lucky
Just for clarification, your display is the LM19264FBY, correct? Is it connected to an Atmel AT89S52? And what is LCD Studio supposed to use for a display, is there a compatibility list somewhere? The website is amateurish at best, I can't seem to find hair nor hide of a list of compatible displays anywhere.
 
No no, this is a totaly different display.. this one i have specs on (see first post...
You have specs on the 192x64 LCD, that's all. That LCD is not relevant at all, since it is the Atmel cpu that you are required to talk to.

It would take a lot of reverse engineering to see what the Atmel is doing, and maybe the lock bits are set, so it would be impossible.

Your only way to see what is happening is to have a working DMX, and a communications sniffer, to see what is being sent on the RS-232 link vs. what gets drawn on the display. Also, see what gets returned when a button is pushed.
 

Lucky

New member
i have info on the controler it's an Atmel at89s52 http://www.atmel.com/dyn/resources/p...ts/doc1919.pdf
aren't these specs on the controller?

this is where i need help, i have no clue how to do this... years ago i could do simple DOS scripts, without any formal training, it was all self taught, but at 46, & not having done anything like this in 26 years, i'm lost..Bill Gates made my mind lazy, lol

So am i screwed? do i just set this LCD on my desk & let the pretty green, blank screen gather dust?
 
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aren't these specs on the controller?
Yes, the specs on the cpu chip. That tells you zip zero zilch nada about the program that has been burnt into the cpu.
So am i screwed? do i just set this LCD on my desk & let the pretty green, blank screen gather dust?
Unless you have a better idea about using the parts for something, or you come up with the comm protocol info needed to control it.
 

Lucky

New member
so if i understand this right, the controller chip is sold semi preprogramed, like a hard drive with an o.s, the the manufacturer of the component (say a desktop cpu built for a dedicated task) loads their own protocol into the chip to run the LCD.

so i have to either have to write something to use the chips protocol, or "unlock" it & what? write my own, or use this program?
 
The cpu chips are sold unprogrammed. The board mfgr programs them with the software that they write. If you can discover the communication protocol, then you can control what the board sends to the LCD. If the cpu has its "lock" bits set, then you cannot dump the code contained in it to do reverse engineering.

Not much more can be said about this, you know.
 
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