Search found 14 matches

by wfriedrich
Sun 2019-01-13 23:04
Forum: VS23S010 Forum
Topic: 640x480 resolution
Replies: 5
Views: 130

Re: 640x480 resolution

Here is my startup debug printout: P42 Display Shield Test Write SPI address: 0xB8 : 0xE Read SPI address: 0xB7 : 0xE Write SPI address: 0x1 : 0x40 Write SPI address: 0x28 : 0x39 Write SPI address: 0x29 : 0x129 Write SPI address: 0x2B : 0x3000 Write SPI address: 0x2A : 0x8D4 Write SPI address: 0x30 ...
by wfriedrich
Fri 2019-01-11 5:25
Forum: VS23S010 Forum
Topic: 640x480 resolution
Replies: 5
Views: 130

Re: 640x480 resolution

Thanks, Panu. I have not worked on the code since my initial post, but will continue over the weekend and send a summary of what I have initialized. I used your demo code with the macros to generate the protolines and modified the numbers to my best understanding, so it should be very easy to unders...
by wfriedrich
Sun 2019-01-06 22:42
Forum: VS23S010 Forum
Topic: 640x480 resolution
Replies: 5
Views: 130

Re: 640x480 resolution

And I probably should have added my code for anybody who is interested. If you use a different setup the SPI slave select, WP and hold pin need to be remapped eventually. Here we go... - Wolfgang. PS: If anybody is interested in my setup, here is more information about the board: https://hackaday.io...
by wfriedrich
Mon 2018-12-17 5:10
Forum: VS23S010 Forum
Topic: 640x480 resolution
Replies: 5
Views: 130

640x480 resolution

Hello Panu and Kalle, I am working again on my Arduino shield with the VS23S010 and I am trying to set up a 640x480 pixel resolution with a PAL crystal (4.434MHz). Initialization seems to be somewhat OK as my display is syncing and showing a black image after config. Drawing any pixel into the image...
by wfriedrich
Fri 2018-03-02 3:46
Forum: VS23S010 Forum
Topic: Nice color palettes for VS23S010 TV-Out
Replies: 12
Views: 4628

Re: Nice color palettes for VS23S010 TV-Out

Hello Panu, Finally I got to use the Palette Editor as well. Really enjoying it, this makes life between RGB and YUV so much easier. One thing I noticed, the RGB value display under the Microcode input shows the R,G and B twice but in different order. The 24bit value is formatted as BBGGRR, the sepa...
by wfriedrich
Wed 2018-01-24 18:47
Forum: VS23S010 Forum
Topic: NTSC vs PAL colour palette
Replies: 6
Views: 1427

Re: NTSC vs PAL colour palette

Hello Panu, Thanks, very good information again. I somehow thought that the phase change would cause a flip o the U and V bit indices, but it is a rotation. So to mitigate the artifact pixel, I have to find the memory location of the blank pixel just before the image area (see updated picture of you...
by wfriedrich
Tue 2018-01-23 5:17
Forum: VS23S010 Forum
Topic: NTSC vs PAL colour palette
Replies: 6
Views: 1427

Re: NTSC vs PAL colour palette

Hello Panu, Thank you very much for this excellent explanation. This helped a lot to understand the details and find my error. A memory dump showed that I was not using the value for the burst level I thought I was using. Fixing that finally gives me beautiful identical default colours in PAL and NT...
by wfriedrich
Fri 2018-01-19 5:01
Forum: VS23S010 Forum
Topic: NTSC vs PAL colour palette
Replies: 6
Views: 1427

Re: NTSC vs PAL colour palette

Hello Panu, Thank you very much for the information. This is very helpful. My NTSC palette is already looking like the default palette as the values for microcode and burst level where set already. My PAL palette is still looking different, almost like green and red are swapped. I will send an image...
by wfriedrich
Sun 2018-01-14 4:52
Forum: VS23S010 Forum
Topic: NTSC vs PAL colour palette
Replies: 6
Views: 1427

NTSC vs PAL colour palette

Hello VLSI team, I have my video display shield working in PAL and NTSC mode (see initial thread http://www.vsdsp-forum.com/phpbb/viewtopic.php?f=14&t=2161 ). I am generating the same colour pattern (16x16 tiles, byte value 0 to 255 in YUV422) in both modes but the lines have different base colours....
by wfriedrich
Tue 2017-08-15 2:47
Forum: VS23S010 Forum
Topic: VS23S010 testmode pin [and Arduino video out]
Replies: 9
Views: 1831

Re: VS23S010 testmode pin [and Arduino video out]

Thanks again, Panu.
I will play play with the resistor values and have a look at the video signal on the scope. Now I am going to dive into my software and might come back with more questions about configuration if necessary.
- Wolfgang.