Netduino与PC的通信

Question

我是netduino的新手，所以我有一个简单的问题(或者，它应该很简单)。我想要做的是从我的winform应用程序通过rs232发送一个整数(字符串)到我的netduino + 2，然后，我的netduino应该读取这个整数并使板载led闪烁那么多次。

我已经阅读了关于这个主题的在线教程，并找到了一些示例，可以在我的PC和Netduino之间提供通信。

是的，我确实收到了回声。即使我断开netduino并将其隐藏在口袋中，也会收到回声:)。这就是我对这个小玩意儿的理解。

我如何通过rs232 cabel向我的Netduino发送他可以阅读、理解并采取相应行动的信息？

有一段代码直接从网上传过来的：

对于NETDUINO：

using System;
using System.Net;
using System.Net.Sockets;
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, 9600, Parity.None, 8, StopBits.One);
        // open the serial-port, so we can send & receive data
        serial.Open();
        // add an event-handler for handling incoming data
        serial.DataReceived += new SerialDataReceivedEventHandler(serial_DataReceived);
        OutputPort led = new OutputPort(Pins.ONBOARD_LED, false);
        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 single byte array
        byte[] bytes = new byte[1];

        // 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

            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

        }

    }

}
}

和我的控制台的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO.Ports;

namespace ConsoleRSS
{
class Program
{
    static SerialPort serial;
    static void Main(string[] args)
    {
        // provide some usage information
        System.Console.WriteLine("enter some text and hit ENTER.");
        System.Console.WriteLine("enter 'x' and hit ENTER to exit.");
        System.Console.WriteLine();

        // initialize the serial port for COM3 (could be other port, depends on system)
        serial = new SerialPort("COM3", 9600, Parity.None, 8, StopBits.One);
        // open the serial-port, so we can send & receive data
        serial.Open();
        // add an event-handler for handling incoming data
        serial.DataReceived += new SerialDataReceivedEventHandler(serial_DataReceived);

        // this will hold each line entered
        string line = string.Empty;

        // as long as an x is not entered
        while (line.ToLowerInvariant() != "x")
        {
            // read a single line from the console
            line = System.Console.ReadLine();

            // convert the line to bytes
            byte[] utf8Bytes = System.Text.Encoding.UTF8.GetBytes(line);

            // send the bytes over the serial-port
            serial.Write(utf8Bytes, 0, utf8Bytes.Length);
        }
    }
    static void serial_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        // wait a little for the buffer to fill
        System.Threading.Thread.Sleep(100);

        // create an array for the incoming bytes
        byte[] bytes = new byte[serial.BytesToRead];
        // read the bytes
        serial.Read(bytes, 0, bytes.Length);
        // convert the bytes into a string
        string line = System.Text.Encoding.UTF8.GetString(bytes);

        // write the received bytes, as a string, to the console
        System.Console.WriteLine("echo: " + line);
        System.Console.WriteLine();
    }

}
}

Answer 1

我不确定你到底遇到了什么问题？乍一看，您的代码看起来是正确的。

我会先检查一下你的硬件，那么你电脑上的设备管理器里的usb线缆是不是真的设为COM 1？电缆是否连接到netduino中的正确端口？