Problem with ports help plz


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  1. #1
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    Quote Originally Posted by mackrackit View Post
    Check the data sheet but if I remember correctly ADCON1 is the register to set on that PIC.
    ADCON1 = %01111111
    makes all digital.
    Setting ADCON1 makes no difference. Always on the first 'release from reset' it misbehaves.

  2. #2
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    Hmmm.
    How are the configs set?
    Dave
    Always wear safety glasses while programming.

  3. #3
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    Smile

    I finally found the solution. You cannot clear PORTA
    when I removed the code
    'PORTA = %01000000 ' Clear PORTA
    It worked on the first 'release from reset'. Now all I need is to indivually clear each bit.

  4. #4
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    Talking

    How's this for Spaghetti Code

    PORTA.1 = 0 :PORTA.2 = 0 :PORTA.3 = 0 :PORTA.4 = 0 :PORTA.5 = 0 :PORTA.6 = 0

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    Quote Originally Posted by wbubel View Post
    How's this for Spaghetti Code

    PORTA.1 = 0 :PORTA.2 = 0 :PORTA.3 = 0 :PORTA.4 = 0 :PORTA.5 = 0 :PORTA.6 = 0
    A friend of mine writes code that way. Here is a mild sample.
    http://www.picbasic.co.uk/forum/showthread.php?t=5407
    After you do it that way for awhile it begins to make sence.
    Dave
    Always wear safety glasses while programming.

  6. #6
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    Boat-load of errors in wbubels code Dave.

    Got an E-Beer ready for the first one to fix em all & explain in detail why...;o}
    Last edited by Bruce; - 31st July 2009 at 02:06.
    Regards,

    -Bruce
    tech at rentron.com
    http://www.rentron.com

  7. #7
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    Quote Originally Posted by Bruce View Post
    Boat-load of errors in wbubels code Dave.

    Got an E-Beer ready for the first one to fix em all & explain in detail why...;o}
    But he said it was working
    I was planning on going through it when I get back to the shop. A phone and traveling is not the best place to write and or fix code.

    Maybe some one will else will get that beer
    Dave
    Always wear safety glasses while programming.

  8. #8
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    Default E Beer, is there anything it can't do ?

    HiYa wbubel,
    PortA = %01000000 means portA.6 is going high when port is made an output, so if it crosses that place in space time while the PIC is initializing you will see PortA.6 output high. You want to set PortA.6 as zero and do it before you set the tris register to input or output so when it becomes an output or input the latch register is set in a known state, setting it as 1 does not enable pullups or anything like that, so you should have:
    Code:
    PortA = %00000000 ' set port latches low
    TrisA  = %01000000 ' make RA6 input
    You ever watched an old mechanical slot machine? Figure your registers are going like that until the pic boots and settles into the default mode, usualy 11111111, then it follows your code.
    Last edited by Archangel; - 31st July 2009 at 03:21.
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  9. #9
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    Great!
    I saw you configs and was wondering about the OSC setting.
    But if it is working...
    Dave
    Always wear safety glasses while programming.

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