#include <SoftwareSerial.h>
String sendMessage;
String receivedMessage;
SoftwareSerial Serial1(PB1,PB0)
void setup() {
  Serial.begin(9600);    // Initialize the Serial monitor for debugging
  Serial1.begin(9600);   // Initialize Serial1 for sending data
}

void loop() {
  while (Serial1.available() > 0) {
    char receivedChar = Serial1.read();
    if (receivedChar == '\n') {
      Serial.println(receivedMessage);  // Print the received message in the Serial monitor
      receivedMessage = "";  // Reset the received message
    } else {
      receivedMessage += receivedChar;  // Append characters to the received message
    }
  }

  if (Serial.available() > 0) {
    char inputChar = Serial.read();
    if (inputChar == '\n') {
      Serial1.println(sendMessage);  // Send the message through Serial1 with a newline character
      sendMessage = "";  // Reset the message
    } else {
      sendMessage += inputChar;  // Append characters to the message
    }
  }
}