#include <SPI.h>


void setup() {
  SPI.begin();
  SPISettings settings(10000000,MSBFIRST,SPI_MODE0);
  SPI.beginTransaction(settings);
  digitalWrite(SS,LOW);
  SPI.transfer(0xF0);
  digitalWrite(SS, HIGH);
  SPI.endTransaction();
  SPI.beginTransaction(settings);
  digitalWrite(SS,LOW);
  SPI.transfer(0xF0);
  digitalWrite(SS, HIGH);
  SPI.endTransaction();
}

void loop() {

  digitalWrite(9,HIGH);
  delay(100);
  digitalWrite(9,LOW);
  delay(100);

}