16F877A system and tachometer (FIS version) on the table

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  1. - 28th October 2011, 15:43 #1
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    mazoul72
    mazoul72 is offline Junior Member
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    Default 16F877A system and tachometer (FIS version) on the table

    Hello,

    i have a system with a PIC16F877A that is in serial with steering wheel command (RESET / UP / DOWN on B5,B6 et B7)
    I am programing to put ground on outputs (RC3 ,RC4 ,RC5 ) but for valid UP/DW/RESET i need transistion from +12V to ground .

    Also i need absolutely 12V like FIS send to input (normally) and PIC has only +5V to 3 wires .
    How have +12V on RC3 ,RC4 and RC5 outputs command by my program ? (pull-up resistors ??)

    Regards.Name: explanations.JPG Views: 1756 Size: 60.8 KBName: explanations.JPG Views: 1305 Size: 8.8 KB
    Last edited by mazoul72; - 28th October 2011 at 15:48.
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