This code converts Arduino Leonardo into a USB to UART converter

Leo2UART.ino

/*
* This code converts Arduino Leonardo into a USB to UART converter
*/
int incomingByte = 0;

void setup() {
  // initialize serial:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }
  Serial1.begin(9600);
}

void loop() {
  if (Serial1.available() > 0)
  {
     incomingByte = Serial1.read();
     Serial.write(incomingByte);
  }
  
  if (Serial.available() > 0)
  {
     incomingByte = Serial.read();
     Serial1.write(incomingByte);
  }
}

Hi Ozan

I am trying to use you code for uploading a sketch to an ESP32-Cam, with help of a Leonardo, without success.
Would you mind having a look? I am a newbie and may have made a simple mistake, which you may be able to recognize from the first glance.

I have created an Arduino Forum post.

Any help would be greatly appreciated.