Bluetooth communication with computer using SoftwareSerial

Projects Interfacing w/ Software on the Computer
1

I have a Compact Mega 2650 with the JY-MCU Bluetooth module. I have the BT module connected to pin 2 and 4 (Rx and Tx on the JY-MCY, Tx and Rx defined on SoftwareSerial). All that I want is to write something on the Mega and read it on the computer. The computer and the JY-MCU pair with no problem, and I open a serial terminal and connect to the BT port at 9600 baud to read what the arduino sends. I am running the following code on the Mega:

#include <SoftwareSerial.h>

const int rxPin = 4; //SoftwareSerial RX pin, connect to JY-MCY TX pin
const int txPin = 2; //SoftwareSerial TX pin, connect to JY-MCU RX pin
                     // level shifting to 3.3 volts may be needed

SoftwareSerial mySerial(rxPin, txPin); // RX, TX

const int ledPin = 13;  // led pin

int state = 0;        // if state is 1, the LED will turn on and
                      // if state is 0, the LED will turn off
int flag = 0;         // a flag to prevent duplicate messages

void setup() {
    // sets the pins as outputs:
//    pinMode(ledPin, OUTPUT);
    mySerial.begin(9600);
//    digitalWrite(ledPin, LOW); // LED is initially off
}

void loop() {
    //reads serial input and saves it in the state variable
    if(mySerial.available() > 0){
      mySerial.println("1234");
      delay(1000);

        }
    }

I get nothing at all back. Any ideas on how I can approach debugging this? Is there an obvious problem with the code? Thanks for the help.

Bret

2 
const int rxPin = 4; //SoftwareSerial RX pin, connect to JY-MCY TX pin
const int txPin = 2; //SoftwareSerial TX pin, connect to JY-MCU RX pin
                     // level shifting to 3.3 volts may be needed

SoftwareSerial mySerial(rxPin, txPin); // RX, TX

The Mega has 4 hardware serial ports. Why are you using SoftwareSerial?

Have you looked at the documentation for SofwareSerial? Specifically, have you noted which pins can be used for SoftwareSerial on the Mega?

3

Using the hardware UART took care of it. I was using SoftwareSerial mainly because that was what was used in the examples that I found. Thanks for the help.

Updated Code:

void setup() {
    Serial1.begin(9600);
}

void loop() {
    {
      Serial1.println("5678");
      delay(1000);
        }
    }