How to send data from Arduino Xbee and receive it from C#

Question

I have an Arduino XBee shield and I have a Sparkfun XBee USB explorer. I would like to send data (temperature sensor) that comes from the Ardunio XBee and receive it in my C# programme.

For now, let's say I want to send 45, 100 to my C# programme.

I don't receive any data that comes from the XBee shield. Am I missing anything with the code?

The below code is the sender from the Arduino XBee shield:

SoftwareSerial mySerial(4,5);
void setup()
{
    mySerial.begin(9600);
}


void loop()
{
    if (mySerial.available() > 0)
    {
        mySerial.write(45);
        mySerial.write(',');
        mySerial.write(100);
        mySerial.write('\n');
    }
}

Receiver code for the USB XBee explorer in C#:

SerialPort port = new SerialPort();

public Form1()
{
    try
        {
            port.PortName = "COM8";
            port.BaudRate = 9600;
            port.DataBits = 8;
            port.Parity = Parity.None;
            port.StopBits = StopBits.One;
            port.Open();
            Console.WriteLine("Opened");
        }
        catch(Exception ex)
        {
            Console.WriteLine("Sorry! " + ex);
        }

        // Handler for receiving data
        port.DataReceived += serialPort1_DataReceived;
    }

    private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
    {
        if (port.IsOpen == true)
        {
            string RxString = port.ReadLine();
            Console.WriteLine(RxString);
        }
    }

The XBee configuration:

• One XBee is: Coordinator AT mode -- connected to USB Sparkfun Explorer
• Another XBee is: Router AT mode -- Connected to Arduino shield

As tomlogic answered my question in Stack Overflow question XBee two-way communication (sender and receiver) at the same time.

Answer 1

I got it working. The problem was from my void loop() method. The mySerial should be like

mySerial.println(temperature);

• However, you must check mySerial Rx,Tx pin that they are right one

Answer 2

Your XBee shield uses pins 0 and 1 on the Arduino. Softwareserial is not needed, just use:

Serial.begin(9600); // In void setup() routine

To send the temperature, use this in function loop:

Serial.print(temperature); // Need a variable 'temperature' of course...

Test the Arduino code with the built-in terminal in the Arduino IDE to see if the port actually can receive and send (remove the XBee shield first). After that works, test out the XBee communication.