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.
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