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Parallel LCD — Parallax Forums

Parallel LCD

enowakenowak Posts: 9
edited 2005-04-06 14:51 in General Discussion
I got a parallel LCD going using code I copied from “Exploring the SX Microcontroller with Assembly and BASIC Programming • Page 145" problem is, it only works when run through the debug. When I load it using the program button nothing happens.

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2005-04-06 02:17
    Hello,

    ·· Posting your code might help.· But it sounds like it might be a timing issue.· Like perhaps you are sending the data too fast.· Without seeing your code I can't tell whether you're handling it or not, but for each command/character you send to the display, it sets a busy flag, and if you blindly send data without checking it, you can over-run the LCDs ability to receive and process the information you're sending.


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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • PJMontyPJMonty Posts: 983
    edited 2005-04-06 07:15
    Enowak,

    Have you verified that your system is working properly when you program? After doing a Run->Program, the SXKey no longer provides a clock. Have you removed the SXKey from the system and replaced your clock source?
      Thanks, PeterM
    • enowakenowak Posts: 9
      edited 2005-04-06 14:51
      Thanks,

      The problem was, I didn’t put the resonator in. This is probably mentioned in the manuals, but I must have missed it. Thanks again.

      Ed Nowak
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