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Xbee test


#1

I test the Xbee module today.
I use the domino with a Xbee to send a text to the Spider with a xbee module and shows the text in the display. It works fine. But I have a basic question.
I use two methods to do that, both can work.
I don’t know which one is better,
or some one can give me a better example?
The domino send the text every 1000 ms.
Thanks.
1.

    
namespace GadgeteerApp1
{
    public partial class Program
    {
        // This method is run when the mainboard is powered up or reset.   
        public static byte[] input = new byte[9];
 void ProgramStarted()
        {
          string test = "test";
            var font = Resources.GetFont(Resources.FontResources.small);
            xBee.SerialLine.Open();
            while (true)
            {
              
                int count = xBee.SerialLine.Read(input, 0, input.Length);
                if (count > 0)
                {
                    char[] chars = Encoding.UTF8.GetChars(input);
                    string str = new string(chars, 0, count);
                    Debug.Print(str);

                    led.BlinkOnce(Colors.Blue);
                    display.SimpleGraphics.DisplayText(str, font, Colors.Blue, 150, 150);
                    Debug.Print("Program Started");
                    Thread.Sleep(500);
                    display.SimpleGraphics.Clear();


                }

            }

        }

    }
}



namespace GadgeteerApp1
{
    public partial class Program
    {
        // This method is run when the mainboard is powered up or reset.   
        public static byte[] input = new byte[9];

        GT.Timer timer = new GT.Timer(500);

        void ProgramStarted()
        {
          string test = "test";
            var font = Resources.GetFont(Resources.FontResources.small);
            xBee.SerialLine.Open();

            timer.Tick += new GT.Timer.TickEventHandler(timer_Tick);
            timer.Start();          
        }

        void timer_Tick(GT.Timer timer)
        {
            
            var font = Resources.GetFont(Resources.FontResources.small);
            int count = xBee.SerialLine.Read(input, 0, input.Length);
            if (count > 0)
            {
                char[] chars = Encoding.UTF8.GetChars(input);
                string str = new string(chars, 0, count);
                Debug.Print(str);

                led.BlinkOnce(Colors.Blue);
                display.SimpleGraphics.DisplayText(str, font, Colors.Blue, 150, 150);
                Debug.Print("Program Started");
                Thread.Sleep(500);
                display.SimpleGraphics.Clear();               
            }
        }
    }
}


#2

Look at comments generated by gadgeteer engine. A “while(true)” is not allowed and will cause things to not work properly.