/*
*   Sofware Serial test code
*   This code reads incomming data and sends it back over the Software serial line.
*   This code is based on the work of Cody Bradly at http://www.ernstc.dk/arduino/tinycom.html
*   and on the SoftwareSerialExample Tom Igoe
*   
*   Date 2019-04-24
*   Author Joey van der Bie
*   
*/
#include <SoftwareSerial.h>
const int RX = 0;
const int TX = 1;

SoftwareSerial mySerial(RX, TX);

void setup() {
  pinMode(RX, INPUT);
  pinMode(TX, OUTPUT);
  mySerial.begin(9600);
}

void loop() {
  if ( mySerial.available() ) {
    //send every received character
    mySerial.println( mySerial.read() );
    delay(10);
  } else {
    mySerial.println( "0" );
    delay(1000);
  }
}