#include <HardwareSerial.h>
HardwareSerial Sender(1);
HardwareSerial Receiver(2);
String dataSend="Hello đây là thông báo từ esp32Sender!";
String dataReceiver="";
void setup()
{
  Serial.begin(115200);
  Sender.begin(115200, SERIAL_8N1, 26, 25);
  Receiver.begin(115200, SERIAL_8N1, 32, 33);
}

void loop() {
  Sender.println(dataSend);
  if(Receiver.available()) {
    dataReceiver=Receiver.readString();
    Serial.print(dataReceiver);
  }
  delay(1000);
}