String receivedMessage = "";  // Variable to store the complete message

void setup() {
  // Start the Serial Monitor at a baud rate of 115200
  Serial.begin(115200);
  
  // Print an initial message to the Serial Monitor
  Serial.println("ESP32 is ready. Please enter a message:");
}

void loop() {
  // Check if data is available in the Serial buffer
  while (Serial.available()) {
    char incomingChar = Serial.read();  // Read each character from the buffer
    
    if (incomingChar == '\n') {  // Check if the user pressed Enter (new line character)
      // Print the message
      Serial.print("You sent: ");
      Serial.println(receivedMessage);
      // Clear the message buffer for the next input
      receivedMessage = "";
    } else {
      // Append the character to the message string
      receivedMessage += incomingChar;
    }
  }
}