Thursday, February 5, 2009

PIC18 HD44780 LCD Driver Interface Code

Update 2013-03-25:

I've updated this example code to work with the latest Microchip XC8 compiler. The code is working perfectly with a PIC18F14K50, but can be very easily modified for use with any PIC.

Download: https://github.com/veegee/pic18-lcd


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11 comments:

  1. clinisbutMay 19, 2009 at 4:51 AM

    Hi. I'm playing with one of those displays and sometimes due to electrical reasons, my displays completely hangs up (display goes off and ignores all my messages). How could I detect this hang up? I've tried to check the busy flag but this does not help me.
    I've also tried to compare the value stored in first slot in DDRAM with its theorical value but also seems to not work. I have no more ideas.

    ReplyDelete
  2. ChrisAugust 8, 2009 at 10:06 AM

    This code attempts to call on the 'delays.h' header file. Can you post this file code? Thanks!

    ReplyDelete
  3. solarwindAugust 8, 2009 at 8:19 PM

    delays.h is included with Microchip C18

    ReplyDelete
  4. Student-TAugust 9, 2009 at 8:18 AM

    how can we get this code to show a floating variable?

    Somehow if you do a printf with a float variable, the variable won't appear on the LCD.

    But you printf with a int variable, it works.

    Thanks for your advice in advance

    ReplyDelete
  5. solarwindAugust 9, 2009 at 2:09 PM

    Hmm, printing anything should work. It's just a normal printf. Whatever printf prints will be displayed on the LCD via the LCD putc. I don't know why it wouldn't work.

    ReplyDelete
  6. nicedayAugust 12, 2009 at 5:31 AM

    hmm compiled this in c18 and ran in pic18 simulator and all i get is one garbage character...

    ReplyDelete
  7. maxFebruary 24, 2012 at 4:02 AM

    hi.. i cant put floating var into the sentence.. hope to seek some reply..

    ReplyDelete
  8. AnonymousJune 14, 2012 at 1:55 PM

    It`s a perfect running code!
    Thanks a lot!

    ReplyDelete
  9. AnonymousMarch 18, 2013 at 12:39 PM

    A #DEVICE required before this line
    1 Errors, 0 Warnings.
    Halting build on first failure as requested.

    ReplyDelete
  10. veegeeMarch 25, 2013 at 4:05 AM

    Just updated this example for the latest xc8 compiler: https://github.com/veegee/pic18-lcd

    Everything is working, tested on a PIC18F14k50.

    ReplyDelete
  11. TakersPTAugust 20, 2013 at 7:07 AM

    can use LCD with pic18f4685?
    MPLAB C18 compiler

    Can you do upload again?

    ReplyDelete

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