Which P1 Spare pin define is correct?

Hi Everyone

I’m try to compile firmware for P1, I can use P1S0 to P1S6 in the firmware without compile error,
So which of those 7 pins (P1S0 to P!S6) corespondent to the 6 spare Pins on P1, any help is much appreciated!


Have you checked the data sheet?


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