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SSD 1963 AND 800X480 TFT

This is the place to talk about Parallax Propeller Chip and Boards
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pilot0315
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SSD 1963 AND 800X480 TFT

Postby pilot0315 » Mon Jun 01, 2015 2:20 pm

I have been having problems with this device. All the code appears to be correct but I cannot get the whole screen to work.
Here is the documentation and code. I get pixellations on one side, good colors in the middle and black on the right.
I will upload photos tonight
Attachments
NHD-7.0-800480EF-20 Controller Board.pdf
(381.54 KiB) Downloaded 132 times
NHD-7.0-800480EF-ATXL-CTP.pdf
(908.71 KiB) Downloaded 132 times
NHD-7.0-800480EF-ATXL-T tft screen.pdf
(715.4 KiB) Downloaded 130 times
SSD1961_2_3_Application_note_v1.7.pdf
(621.84 KiB) Downloaded 120 times
SSD1963.pdf
(957.79 KiB) Downloaded 130 times
fast ripple send to paul.spin
(7.97 KiB) Downloaded 121 times
Arduino_nhd-7_0-800480EF.txt
(6.53 KiB) Downloaded 125 times

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Re: SSD 1963 AND 800X480 TFT

Postby JDISME » Thu Jun 11, 2015 9:54 pm

Can you share more of the pictures of what it looks like? Reading the data sheet, it almost looks like the RGB that the displays Parallax uses. For example, using a TV OUT object. Have you tried to use a TV Object to control it? Or do you have to send command to the mcu onboard to display?
Joshua Donelson

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Re: SSD 1963 AND 800X480 TFT

Postby zappman » Fri Jun 12, 2015 11:34 pm

pilot0315 wrote:I have been having problems with this device. All the code appears to be correct but I cannot get the whole screen to work.
Here is the documentation and code. I get pixellations on one side, good colors in the middle and black on the right.
I will upload photos tonight


Take a look at this webpage Ray uses the SSD 1963 on his DVI Graphics Shield Ray has lots of Propeller code to support his board.
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Re: SSD 1963 AND 800X480 TFT

Postby pilot0315 » Wed Jun 17, 2015 11:20 am

I have been there. I used his code to verify that the device works. I am trying to write my own code. For some reason I am not able to get full screen. I have been looking for someone who has the same device "ssd 1963" and a propeller chip who would look at my code. Right now I am trying to relearn my Saleae logic analyzer. Have not used it in parallel before. Trying to see why the commands are screwed up in my initiation process.

Thanks

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Re: SSD 1963 AND 800X480 TFT

Postby pilot0315 » Wed Jun 17, 2015 11:27 am

JD

It has a controller card that has to have specific commands sent in a sequence. For some reason, either my commands are not being sent properly, completely, and or dropped off.
20150524_145012.jpg
(267.44 KiB) Not downloaded yet
20150524_145022.jpg
(250.91 KiB) Not downloaded yet


The left side has pixels. The right side is black the center two thirds is semi operational.

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Re: SSD 1963 AND 800X480 TFT

Postby Savage///Circuits » Wed Jun 17, 2015 2:07 pm

I tried to get one of these as a demo from that company, but they wanted me to buy one off the website and I don't really have a use for it. I kind of thought we could do each other a favor...I develop code for their display on the Propeller and they donate one to Savage///Circuits so I can help get people up and running. But apparently that's not an option. Sorry pilot. :roll:
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Re: SSD 1963 AND 800X480 TFT

Postby pilot0315 » Thu Jun 18, 2015 11:18 am

Yeah they are not too creative in understanding that it could boost sales.

Thanks for the thought.

I am still struggling with this thing. I am trying to relearn my saleae device so that I can check out the code. I am having problems with that. Never used the parallel function. Not triggering when sending 8 bits.

I will get it though.

Martin

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Re: SSD 1963 AND 800X480 TFT

Postby Savage///Circuits » Thu Jun 18, 2015 12:06 pm

Typically you would need more than 8 channels to monitor an 8-bit Parallel bus if you're trying to see the control data. For example to monitor a Hitachi HD44780 compatible LCD you would need 8 channels plus 3 for the control bus. 8 data bits plus E (enable), R/W (Read/Write) and RS (Register Select). It's the only way you'd get a complete picture of what's going on in this case.

Without monitor the E line you'd never know when a new bytes was sent unless it changed value. Without the R/W you wouldn't know which side send the byte and without RS you wouldn't know if it was a command or data. So control bus lines are usually important, though I don't know what interface this particular display has.
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Re: SSD 1963 AND 800X480 TFT

Postby pilot0315 » Sat Jul 11, 2015 8:18 pm

I called Saleae and they told me to right click on the icon that says which of the channels is rising edge etc, and you can disconnect all triggers. Then set the data collection to a high number. Run the analyzer the run the code. When you think that you have enough data stop it and it will show the parallel data.

It worked great.

Still have a problem with the tft though.

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Re: SSD 1963 AND 800X480 TFT

Postby pilot0315 » Wed Aug 12, 2015 1:58 pm

Giving up on Newhaven


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