Teensy 3.1: Pin 8 as input while SPI is running? - Possible?

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local_dani_21

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Hi, I tried to use pin 8 as an input. It worked well, as long as I didn't start any SPI-communication. From that moment on, all I ever got, was a high on that input. I measured 1.635V which made me think that it could be the mean of normal SPI chattering (0 V - 3.3 V).

On the pin out card, pin 8 has a grayed out DIN noted and I read in the forum somewhere, that this was an alternative pin for MISO.

Could this really have been SPI that messed up my readings? I used SPI on it's «normal» pins (10, 11, 12, 13).
Is it possible to use pin 8 alongside SPI? How would I do that?

Thank you, Dani
 
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