acassis commented on issue #16762:
URL: https://github.com/apache/nuttx/issues/16762#issuecomment-3152527171

   @comejv each PINFUNCTION_n (n = 1, 2, 3, ...) means an alternative pin for a 
function. For example a GPIO_SPI1_MISO could be in differents pins of the chip, 
you need to look at arch/arm/src/familyname/hardware/pinmap.h to understand 
what is the physical pin you want to use to GPIO_SPI1_MISO function. After you 
understand that logic it is very simple


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