inputs on 12F675 (or for that matter any PIC)


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  1. #1
    Join Date
    Jun 2005
    Location
    Up the bush, Western Plains, NSW Au
    Posts
    216

    Default inputs on 12F675 (or for that matter any PIC)

    Hi all,
    Short of using interrupts on GPIO change, is there any way to have the digital inputs latch up until read. I think I sorta want an interrupt type of thing but without all the interrupt programming. I remember the old 6821 PIA had provision to latch the inputs, if they changed and cleared when the input register was read. Any such sorta thing available on PICs?
    I am, BTW, R'ingTFM but aren't up to that bit yet.
    I will be having a pretty short change on the inputs with the possibility of missing them while off doing other things. Perfect scenario for interrupts I know, but I just wanna do it the lazy way.
    Serve me bloody right if I hafta use interrupts, won't it?
    I have done the design with RS flip flops, which works beaut, but takes up too much real estate on the PCB.
    Last edited by muddy0409; - 11th April 2007 at 17:44. Reason: Additions
    Peter Moritz.
    Up the bush, Western Plains,
    New South Wales,
    Australia.

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