You're likely to cause great confusion by redefining things that everyone else programming the robots in MicroChip C understands in a specific way. I suggest instead that you leave the existing #defines alone and create your own aliases for your own use, like this:
Code:
/* Digital input aliases that evaluate to 0 when the input is open and 1 when grounded by a switch. */
#define rc_sw01 !(PORTBbits.RB2)
#define rc_sw02 !(PORTBbits.RB3)
#define rc_sw03 !(PORTBbits.RB4)
...