Doesn't work with propboe

[jjinkou2]

I don't know why but i can't make any of them work on my propboe. VGA is connected from 8-15. i know it works since i could compile a previous version: for instance your driver here works correctly https://forums.parallax.com/discussion/146678/vga-launcher-vga-demos-for-propboe-users

[konimaru]

It's not just a question of wiring your stuff up. There is also a software part to it (i.e. vcfg needs to be setup with the correct pin group, for me it's usually pin group 2, i.e. 16-23).

If you can tell me which driver you want to use I'll have a look and let you know what needs changing.

[jjinkou2]

i would like to use the 50HxRAM.
I changed :

  vpin    = $0FC                                ' pin group mask
  vgrp    = 2                                   ' pin group
sgrp = 2 ' pin group sync

to

  vpin    = $0FF                                ' pin group mask
  vgrp    = 1                                   ' pin group
sgrp = 1                                     ' pin group sync

without result.

mind if i ask for a suggestion ? why not integrate a pingroup inside the init . So when you call it inside the demo it could be:
vga.init(pingroup).

So that the user of the driver never mess inside the driver.

But i know that would break every demo. and may be that is intentional from your part.

[EDIT]
I forget to mention that with propeller-ide i couldn't load into ram. so i manually do it like following:

openspin xxxdemo.spin
propeller-load -r xxxdemo.binary

[konimaru]

[valid for version 0.8]
If you just want to move pin group then you should only touch vgrp and sgrp, leave vpin alone ($FC). In your case that would be $FC/1/1. The $FF setting demands different pin groups for sync and video which I believe is not the case for your setup.

re: parameters, at the time there were basically two ways of doing things, parameters or constants. I opted for the latter. That being said, there is at least one driver which does take the group as a parameter but that's simply because the user needed 4 instances of said driver for his multi-display console (and would otherwise have needed 4 drivers instead of one). Depending on how strong you feel about it, just file a enhancement request and I can have a look.

[jjinkou2]

i'll test tonight your modifications when i'm at home .
no need to change anything , i was just curious about the rational behind.

thank you.

[jjinkou2]

Still have a problem with $FC/1/1. I have only these leds switched on (which shows that VGA is receiving signal on them):

• pin 9
• pin 10 & 11 corresponding B0B1(blue OK)
• only pin 13 (G1)
  I have no signal on 8, 12,14,15

[Edit]
it works now, i was using propeller-ide which compile with bst.
I compiled it manually with openspn and propeller-load, and magic happends.

You can close this thread.

[konimaru]

Ah, would have been good to know. bst has a problem with PASM like long +4 which is downgraded to long 0. Good to know you got it working. Have fun!