#include "si5351.h"
#include "Wire.h"
Si5351 si5351;
void setup() {
  Serial.begin(57600);

  si5351.init(SI5351_CRYSTAL_LOAD_8PF, 0);
  // Set CLK0 to output 14 MHz with a fixed PLL frequency
  si5351.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);

  // Set CLK1 to output 20 MHz
  si5351.set_freq(1000000000ULL, 0ULL, SI5351_CLK1);
}

//long oldPosition  = 1000;

void loop() {
    delay(1000);
      serial.println(millis());
  si5351.set_freq(1000000000, SI5351_PLL_FIXED, SI5351_CLK0);
  serial.println(millis());
Serial.println("Konec");
while(1)

 }