Reply To: Can Pin 12 (MISO) be used?

[Michael P. Flaga]

The short answer is – Do not use PIN12. (unless it is your last resort.)

The SPI’s Tx and Rx and Clock pins are dedicated together as a resource. (MISO must be an input) Unless you have a custom wired breakout or shield the MISO is hardwired from the Vdsp to the AVR.

While what you say is possible with a few cuts and jumps and edit to this library. This library does support other commands to the Vdsp that are equally receiving and would need to be omitted.

I highly recommend using another GPIO. Please note that A0-A5 are also available as GPIO.