I'm assuming though, that the pins are already defined with or without pullups in the Marlin software somewhere? I was hoping someone could just point me in the general direction. I found where they define what pins are in ramps ex) #define FAN_PIN 8, but where do they define it as an input or output, pullup or not pullup? I know coding somewhat and as far as i know #define just renames a number to a name.
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