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hello everyone, am trying to read bytes from the using the serial port of my netduino and turn on the onboard led after time data arrives but nothing has happened, all i get is the error message unhandled exception of the type system.exception occured in microsoft.spot.hardware.dll.
below is my code and am using pins D0 and D1 for rx and tx respectively
using System;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.Netduino;
using System.IO.Ports;
namespace NetduinoApplication1
{
public class Program
{
static SerialPort serial;
public static void Main()
{
// initialize the serial port for COM1 (using D0 & D1)
serial = new SerialPort(SerialPorts.COM1, 2400, Parity.None, 8, StopBits.One);
OutputPort led = new OutputPort(Pins.ONBOARD_LED, false);
// open the serial-port, so we can send & receive data
try
{
serial.Open();
}
catch
{
led.Write(true);
}
// add an event-handler for handling incoming data
serial.DataReceived += new SerialDataReceivedEventHandler(serial_DataReceived);
for (int i = 0; i < 3; i++)
{
led.Write(true); // turn on the LED
Thread.Sleep(250); // sleep for 250ms
led.Write(false); // turn off the LED
Thread.Sleep(250); // sleep for 250ms
}
// wait forever...
Thread.Sleep(Timeout.Infinite);
}
static void serial_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
// create a byte array
byte[] bytes = new byte[serial.BytesToRead];
// as long as there is data waiting to be read
while (serial.BytesToRead > 0)
{
// read a single byte
serial.Read(bytes, 0, bytes.Length);
// send the same byte back
Thread.Sleep(2000);
serial.Write(bytes, 0, bytes.Length);
OutputPort led1 = new OutputPort(Pins.ONBOARD_LED, false);
led1.Write(true); // turn on the LED
Thread.Sleep(250); // sleep for 250ms
led1.Write(false); // turn off the LED
Thread.Sleep(250); // sleep for 250ms
}
}
}
}
thanks a lot
