LCD Reset Problem


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  1. #1
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    Default

    Just curious Bill, "reset" used in the first post, what do you mean by that, are you taking the mclr line low or doing a full power off scenario?
    I ask because a power off that only browns out the LCD may be the entire problem. There will be times you do not want to use flags = 0 due to latency problems.
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    Default LCD Re-set

    Joe S

    The boards I'm using have a 10k resistor that normally holds MCLR high. The re-set button takes the MCLR pin direct to ground. The power is on all the time.

    I have been lazy with LCDs and not bothered with the spec sheets - just use the PBP LCD commands.

    FLAGS=0 has solved most of my problems but I still get the odd occasion when alternate lines of the LCD don't come to life.

    I suspect that the proper way to fix this is some combination of FLAGS and the configuration brown-out settings. AND READ THE SPEC SHEETS!

    I mostly use PIC16F877A and PIC18F8722 chips on Mikroelektronika boards for developement and move to Futurlec boards for the end product - all hobby stuff, no production.

    Thanks for you interest.

    Regards Bill Legge

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