// The Serial Monitor is routed to pin RX and TX of the ESP32.
// Question: Can that be changed to Serial2 ?
// Answer: Yes !
//
// Note: I use the default pins with Serial.setup().
//
// How to find the default RX and TX pin of Serial2:
// 1) Look into the source code.
// 2) Or use Serial2.begin(9600) in setup()
//    and pause the simulation. Look at the labels.
//
// Normal routing of Serial Monitor in Wokwi:
//    "connections": [
//      [ "esp:TX", "$serialMonitor:RX", "", [] ],
//      [ "esp:RX", "$serialMonitor:TX", "", [] ],
//
// Using Serial2 for Serial Monitor in Wokwi:
//    "connections": [
//      [ "esp:25", "$serialMonitor:RX", "", [] ],
//      [ "esp:4", "$serialMonitor:TX", "", [] ],

void setup() 
{
  // Use pins 16 (RX) and 17 (TX) like this:
  // Not tested if the routing of the Serial Monitor still works.
  // Serial2.begin(9600, SERIAL_8N1, 16,17);

  // Use default pins for Serial2.
  // They are: 4 (RX) and 25 (TX)
  Serial2.begin(9600);
  Serial2.println("Are you seeing this? This is Serial2");
  Serial2.println("Did you use 25 and 4 in diagram.json ?");
  Serial2.println("Try to type something, followed by Enter.");

  // The default Serial port should not be visible in the Serial Monitor.
  Serial.begin(115200);
  Serial.println("Default Serial port, not going to the Serial Monitor.");
}

void loop() 
{
  if(Serial2.available() > 0)
  {
    Serial2.print("You typed: ");
    while(Serial2.available() > 0)
    {
      int inChar = Serial2.read();
      if(isprint(inChar))
        Serial2.print((char)inChar);
    }
    Serial2.println();
  }

  delay(10);
}