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debug out? — Parallax Forums

debug out?

LBLB Posts: 2
edited 2007-11-04 00:31 in Propeller 1
Trying to get some readings off of my ping sensor....please tell me there is a nice little debug window where i can print to?

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2007-11-03 20:13
    Try PropTerminal or even HyperTerminal. It's also very easy to set up TV output using tv_text.spin and a couple of resistors tied to 4 pins. Quite a few boards already come with this setup.
  • Fred HawkinsFred Hawkins Posts: 997
    edited 2007-11-03 20:34
    Mike, speaking of 4 pins, what's the difference between the 2 pin and 4 pin keyboards? I thought the keyboards just need two pins always. (been reading your comboKeyboard.spin from a PEKit standpoint and scratching head)
  • Mike GreenMike Green Posts: 23,101
    edited 2007-11-03 20:50
    My understanding is that, when Andre and Chip were having discussions about the design of the Hydra, it was believed that you had to have the driver transistors that are included in the Hydra's PS/2 interfaces with the resulting need for 4 I/O pins (2 input / 2 output). As Chip did more work, he found that the Propeller could drive the PS/2 pins directly and that only 2 pins were needed. Andre had already committed to the 4 pin design, thus two different designs for the PS/2 interface.

    The Hydra's 4 pin interface can sink more current than the 2 pin interface and the pullups on the Hydra are to +5V rather than the +3.3V of the Demo Board, but practically that doesn't seem to make a difference.
  • Fred HawkinsFred Hawkins Posts: 997
    edited 2007-11-03 20:58
    All the better for us pin-poor 96-prop owners [noparse]:)[/noparse]
  • deSilvadeSilva Posts: 2,967
    edited 2007-11-03 21:38
    To add just a little bit: The recommended PS/2 interfacing is as on the enclosed sketch. This is straight forward and works without any discussion smile.gif
    There is no special current requirement for driving a keyboard's clock. Andr
    350 x 328 - 10K
  • LBLB Posts: 2
    edited 2007-11-04 00:31
    Great, thanks

    Prop Terminal is good enough for me for now - props!
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