LCD via 74HC595


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  1. #1
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    Quote Originally Posted by sayzer View Post
    Would that be possible to use 595_LCD routine (above) with a Hijacked LCDOUT command?
    Something like your LCDAnypin hijacking.
    Yes it would ... with some modification.

    But you may want to check out this post from Guido which uses a 74xx164 shift register and only uses 2 pins on the PIC with the HighJack routines.

    http://www.picbasic.co.uk/forum/show...5344#post95344
    DT

  2. #2
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    Hi coders,
    yepp, it was the darn LC display. I tried the 1602, and the code works. *grnnpgf* I spent 5 days of trying for nothing...

    Anyway, the next goal is to store strings in PICs memory, and shift them out to the LCD. Darryls "STRINGS.PBP" looks very interesting. I think I use his routines again...

    I'll write again.

  3. #3
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    Quote Originally Posted by Darrel Taylor View Post
    Yes it would ... with some modification.

    But you may want to check out this post from Guido which uses a 74xx164 shift register and only uses 2 pins on the PIC with the HighJack routines.

    http://www.picbasic.co.uk/forum/show...5344#post95344
    Thank you Darrel.
    Guido's way did not work in my simulator. I will make the real circuit assuming that the simulator could not simulate it.
    "If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte

  4. #4
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    The circuit and the program work now. It's easily possible to drive up to three LCDs with only three I/O pins of the µC. Darryls "strings.pbp" work with only minor changes for my program. Thanks again, Darryl.


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