Enabling weak internal pull up resistors on port B

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  1. - 7th October 2010, 20:23 #1
    Plcguy's Avatar
    Plcguy
    Plcguy is offline Junior Member
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    In that thought process, it appears option_reg.7 = 0 sets all 4 port B pull ups on an 16F88. Can one of those pins then be used as a serial output? I don't see where you can set individual pins.......
  2. - 8th October 2010, 15:55 #2
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    HankMcSpank
    HankMcSpank is offline Senior Member
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    Quote Originally Posted by Plcguy View Post
    In that thought process, it appears option_reg.7 = 0 sets all 4 port B pull ups on an 16F88. Can one of those pins then be used as a serial output? I don't see where you can set individual pins.......
    On a 16f690, I do this to get the weak pullups working...

    Code:
    option_reg.7=0 ' Enable WPUs by individual pin 
WPUB = %11110000  'enable weak pullups on RB7, RB6, RB5 & RB4
    It all works weally weakpullup-tastically (but disable any other PIC stuff that maybe sharing those ports...and make sure they're all set as inputs)
    Last edited by HankMcSpank; - 8th October 2010 at 16:06.
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