#include <SPI.h>

void setup() {
  // pinMode(MOSI, OUTPUT);
  // pinMode(SCK, OUTPUT);
  // shiftOut(MOSI, SCK, MSBFIRST, 0xf0);

  SPI.begin();
  SPI.beginTransaction(SPISettings());
  digitalWrite(SS, LOW);
  char h[] = "hello!";
  SPI.transfer(h, sizeof(h));
  digitalWrite(SS, HIGH);
}

void loop() {
}