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Problem with LCD — Parallax Forums

Problem with LCD

jaymojaymo Posts: 1
edited 2012-10-01 22:37 in Propeller 1
I have two different 20x4 LCD screens. I am using the DEMO_LCD-16x2_8Bit object to test them. They are different brands - one 14pin and 1 16pin. The wiring is correct because they display "real" letters. I am using them with the QuickStart Board.

Both of them display incorrect characters. Last lines of the display should be "END OF DEMO" / "HAVE FUN !"

I am getting "EOE!OG!EEMO/ Second line IAWE!GUO!!.

It appears that some letters are shifted to the next letter hence the mis-spelling. Can someone help me troubleshoot this?

Thanks
Jay

Comments

  • MagIO2MagIO2 Posts: 2,243
    edited 2012-10-01 22:25
    I'd check the least significant bit connection. Either the wiring or the code might be wrong. Did you set dira correctly - maybe you accidently use this port pin in another COG?
  • evanhevanh Posts: 15,949
    edited 2012-10-01 22:37
    Yeah, low bit is stuck on.
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