#include <SoftwareSerial.h>
int slaves[2] = { 'a', 'b' };
String command;
EspSoftwareSerial::UART SerialPorto;
void setup() {
  Serial.begin(9600);
  SerialPorto.begin(9600, EspSoftwareSerial::SWSERIAL_8N1, 21, 17);
  Serial.println("Can You read me Major Tom?");
}
void loop() {

  if (Serial.available()) {
    command = Serial.readStringUntil('\n');
    Serial.println(command);
    SerialPorto.println(command);
  } else {
    // SerialPorto.print('0');
    delay(10);
  }
}