#include <TinyPinChange.h>
#include <SoftSerial.h>
 
#define DEBUG_TX_RX_PIN         2 //Adjust here your Tx/Rx debug pin
 
SoftSerial MyDbgSerial(DEBUG_TX_RX_PIN, DEBUG_TX_RX_PIN, true); //true allows to connect to a regular RS232 without RS232 line driver
 
void setup()
{
  MyDbgSerial.begin(38400); //After MyDbgSerial.begin(), the serial port is in rxMode by default
  MyDbgSerial.txMode(); //Before sending a message, switch to txMode
  MyDbgSerial.println(F("\nDebug enabled"));
  MyDbgSerial.rxMode(); //switch to rxMode to be ready to receive some commands
}
 
void loop()
{
  if(MyDbgSerial.available())
  {
    MyDbgSerial.txMode();
    MyDbgSerial.print(F("\nReceived: "));MyDbgSerial.write(MyDbgSerial.read());MyDbgSerial.print(F("\n"));
    MyDbgSerial.rxMode();
  }
}