#include <ShiftRegister74HC595.h>
// https://github.com/Simsso/ShiftRegister74HC595

const int dataPin = 5;   /* DS */
const int clockPin = 19; /* SHCP */
const int latchPin = 18; /* STCP */

ShiftRegister74HC595<2> sr(dataPin, clockPin, latchPin);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
    sr.setAllHigh(); // set all pins HIGH
  delay(500);
  
  sr.setAllLow(); // set all pins LOW
  delay(500); 
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}