const byte latchPin = 9;        // to latch the inputs into the registers
const byte clockPin = 13;       // I choose the SCK pin
const byte dataPin = 12;        // I choose the MISO pin

const int pulseWidth = 10;      // pulse width in microseconds

void setup ()
{
  Serial.begin( 115200);
  pinMode( clockPin, OUTPUT);   // clock signal, idle LOW
  pinMode( latchPin, OUTPUT);   // latch (copy input into registers), idle HIGH
  digitalWrite( latchPin, HIGH);
}

void loop ()
{
 
}