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PSB Graphics Deme conflict? — Parallax Forums

PSB Graphics Deme conflict?

HarleyHarley Posts: 997
edited 2010-09-11 16:12 in Propeller 1
On checking PSB_GraphicsDemo, I find the mouse signals also on the LCD driver pins.

PSB_LCcdDriver source indicates pin 24, DisplayOnPin, and pin 25 PixelClockPin using the same as defined in PSB Grapics Demo, pg 2, for the mouse's two signals (mouse.start(24,25). Was the mouse used when testing this demo?

I'm trying to use a Prop ProtoBoard to work with Rayman's demos and a 4.3" LCD and wish to wire the the Prop connections to the LCD and mouse without conflicts the first attempt.

Has anyone used the PSB Graphics Demo with other than the PSB board? If so, how did you work around this seeming conflict?

Comments

  • wjsteelewjsteele Posts: 697
    edited 2010-09-08 17:33
    That must be a bug, becuase the mouse is on pins 14 and 15 for the PSB.

    Bill
  • HarleyHarley Posts: 997
    edited 2010-09-08 17:43
    wjsteele, Good catch!

    I downloaded the PSB schematic, but for some reason the drawing was so small I couldn't read it on screen on the iMac. Way too small to decipher. OK, that makes sense. Probably was tested with PSB.

    However, if the 100 Ω resistors are installed on the Prop ProtoBoard, then pins 24 and 25 are directly wired. So I'll just have to install the resistors elsewhere and wire them to appropriate pins.

    Phew, one more stumbling block removed.
  • wjsteelewjsteele Posts: 697
    edited 2010-09-08 18:29
    Right, pins 24 and 25 on the 4.3" LCD can be moved anywhere... only pins 16-23 have to remain fixed. (Actually, then can drop down to any 8th pin set, but have to be contigious.)

    Bill
  • HarleyHarley Posts: 997
    edited 2010-09-11 16:12
    Thanks Bill,

    Even though I'd had the ProtoBoards ever since they were available, I wasn't aware the 'keyboard' and 'mouse' i/f was wired to dedicated Prop pins until working with this 4.3" LCD. So doing so has been educational. And now understand why the 8 signals need to remain contiguous.

    Today again I looked at the pic of your Wingman. I'd sure like to hold one in my hands for a while! Having done many pcbs and several case designs (in metal), I love to study such items. It would appear that most parts are on the side opposite the display and be SMD parts. What type of connector(s) are used, if that isn't giving away any 'secrets'? (I understand if no comments on your baby are available.)
    Right, pins 24 and 25 on the 4.3" LCD can be moved anywhere... only pins 16-23 have to remain fixed. (Actually, then can drop down to any 8th pin set, but have to be contigious.)
    Bill
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