#define LED0 16
  #define LED0Mask (1U << LED0)

  #define CS 32
  #define CLK 33
  #define MOSI 34
  #define MISO 35
  #define CSMask (1U << CS)
  #define CLKMask (1U << CLK)
  #define MOSIMask (1U << MOSI)
  #define MISOMask (1U << MISO)