I did have a quick look at using the P2 streamer to produce PAL scan lines earlier in the week, and got something on my sony display which isn't that fussy about the v sync
Greyscale only, so far, but the streamer is pretty neat in that you can sequence different rates straight after one another . I think could do a reasonable analog colorburst using the dacs.
I did have a quick look at using the P2 streamer to produce PAL scan lines earlier in the week, and got something on my sony display which isn't that fussy about the v sync
Greyscale only, so far, but the streamer is pretty neat in that you can sequence different rates straight after one another . I think could do a reasonable analog colorburst using the dacs.
I'm working on the doc's. Once I get the streamer documented, I think you'll see a lot of ways to do things. I'm surprised you've gotten that working, already, with just one mode!
I did have a quick look at using the P2 streamer to produce PAL scan lines earlier in the week, and got something on my sony display which isn't that fussy about the v sync
Greyscale only, so far, but the streamer is pretty neat in that you can sequence different rates straight after one another . I think could do a reasonable analog colorburst using the dacs.
I think this composite will be an important sub-area for P2, as other companies are not focused on this.
For direct LCD use, I notice FTDI now have a FT81x Eve variant, with MByte level RAM and 800x600 LCD support.
LUT will let a P2 get close, but JPEG image handling could be a challenge & memory is tight.
8 bit LUT has this spare memory
2^19-800*600 = 44288 RAM spare
a little tight.
6 bit LUT would be
2^19-(800*600*4/5) = 140288 RAM Spare
an improvement, but I'm not sure if the P2 LUT HW supports a 6 bit variant ?
and a MCU variant, cheaper, smaller LCD, but also mechanically well finished is the STM32F746G-DISCO
($48, 4.3-inch 480x272 color LCD-TFT with capacitive touch screen, 128-Mbit SDRAM (64 Mbits accessible)
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What are you doing in this thread??? Get back to that documentation!!!
Greyscale only, so far, but the streamer is pretty neat in that you can sequence different rates straight after one another . I think could do a reasonable analog colorburst using the dacs.
I'm working on the doc's. Once I get the streamer documented, I think you'll see a lot of ways to do things. I'm surprised you've gotten that working, already, with just one mode!
I think this composite will be an important sub-area for P2, as other companies are not focused on this.
For direct LCD use, I notice FTDI now have a FT81x Eve variant, with MByte level RAM and 800x600 LCD support.
LUT will let a P2 get close, but JPEG image handling could be a challenge & memory is tight.
8 bit LUT has this spare memory
2^19-800*600 = 44288 RAM spare
a little tight.
6 bit LUT would be
2^19-(800*600*4/5) = 140288 RAM Spare
an improvement, but I'm not sure if the P2 LUT HW supports a 6 bit variant ?
Addit: Also on the direct-to-LCD front, are items like this
http://www.element14.com/community/docs/DOC-78156/l/raspberry-pi-7-touchscreen-display
Not cheap, but mechanically well finished.
and a MCU variant, cheaper, smaller LCD, but also mechanically well finished is the STM32F746G-DISCO
($48, 4.3-inch 480x272 color LCD-TFT with capacitive touch screen, 128-Mbit SDRAM (64 Mbits accessible)