Question

我没有任何错误或例外。

Button in one Window:

private void button1_Click(object sender, EventArgs e)
{
    ControlPort.Output(0x378, 0xff);
}

和校外接口:

class ControlPort
{
    [DllImport("inpout32.dll", EntryPoint = "Out32")]
    public static extern void Output(int adress, int value);
}

What is wrong? LED on D2 is on all the time.

我有Windows 7 x64 final。

Answer 1

在X64,你应使用“InpOutx64.dll”。

Visit: http://www.highrez.co.uk/Downloads/InpOut32/default.htm There you can read more and find samples.

Answer 2

Working code if somebody needs it.

 using System;
using System.Runtime.InteropServices;

namespace ParallelPort
{
    public class PortAccess
    {
        //inpout.dll

        [DllImport("inpout32.dll")]
        private static extern UInt32 IsInpOutDriverOpen();

        [DllImport("inpout32.dll")]
        private static extern void Out32(short PortAddress, short Data);

        [DllImport("inpout32.dll")]
        private static extern char Inp32(short PortAddress);

        [DllImport("inpout32.dll")]
        private static extern void DlPortWritePortUshort(short PortAddress, ushort Data);

        [DllImport("inpout32.dll")]
        private static extern ushort DlPortReadPortUshort(short PortAddress);

        [DllImport("inpout32.dll")]
        private static extern void DlPortWritePortUlong(int PortAddress, uint Data);

        [DllImport("inpout32.dll")]
        private static extern uint DlPortReadPortUlong(int PortAddress);

        [DllImport("inpoutx64.dll")]
        private static extern bool GetPhysLong(ref int PortAddress, ref uint Data);

        [DllImport("inpoutx64.dll")]
        private static extern bool SetPhysLong(ref int PortAddress, ref uint Data);

        //inpoutx64.dll

        [DllImport("inpoutx64.dll", EntryPoint = "IsInpOutDriverOpen")]
        private static extern UInt32 IsInpOutDriverOpen_x64();

        [DllImport("inpoutx64.dll", EntryPoint = "Out32")]
        private static extern void Out32_x64(short PortAddress, short Data);

        [DllImport("inpoutx64.dll", EntryPoint = "Inp32")]
        private static extern char Inp32_x64(short PortAddress);

        [DllImport("inpoutx64.dll", EntryPoint = "DlPortWritePortUshort")]
        private static extern void DlPortWritePortUshort_x64(short PortAddress, ushort Data);

        [DllImport("inpoutx64.dll", EntryPoint = "DlPortReadPortUshort")]
        private static extern ushort DlPortReadPortUshort_x64(short PortAddress);

        [DllImport("inpoutx64.dll", EntryPoint = "DlPortWritePortUlong")]
        private static extern void DlPortWritePortUlong_x64(int PortAddress, uint Data);

        [DllImport("inpoutx64.dll", EntryPoint = "DlPortReadPortUlong")]
        private static extern uint DlPortReadPortUlong_x64(int PortAddress);

        [DllImport("inpoutx64.dll", EntryPoint = "GetPhysLong")]
        private static extern bool GetPhysLong_x64(ref int PortAddress, ref uint Data);

        [DllImport("inpoutx64.dll", EntryPoint = "SetPhysLong")]
        private static extern bool SetPhysLong_x64(ref int PortAddress, ref uint Data);

        private bool _X64;
        private short _PortAddress;

        public PortAccess(short PortAddress)
        {
            _X64 = false;
            _PortAddress = PortAddress;

            try
            {
                uint nResult = 0;
                try
                {
                    nResult = IsInpOutDriverOpen();
                }
                catch (BadImageFormatException)
                {
                    nResult = IsInpOutDriverOpen_x64();
                    if (nResult != 0)
                        _X64 = true;

                }

                if (nResult == 0)
                {
                    throw new ArgumentException("Unable to open InpOut32 driver");
                }
            }
            catch (DllNotFoundException)
            {
                throw new ArgumentException("Unable to find InpOut32.dll");
            }
        }

        //Public Methods
        public void Write(short Data)
        {
            if (_X64)
            {
                Out32_x64(_PortAddress, Data);
            }
            else
            {
                Out32(_PortAddress, Data);
            }
        }

        public byte Read()
        {
            if (_X64)
            {
                return (byte)Inp32_x64(_PortAddress);
            }
            else
            {
                return (byte)Inp32(_PortAddress);
            }
        }
    }
}

Answer 3

当你在大多数蓝色屏幕上发现这一错误时,你不会例外。例1:

you are using the wrong address (0x3bc, 0x2f8)
you wired the LED wrong
you broke into the wrong museum to get the hardware

这一问题记录得太少,无法帮助你。

Answer 4

我解决了我老的膝上型计算机2000年窗上的LPT港口的问题,在那里无法建立数据港(pin2-pin9)。

利用这一进口功能:

[DllImport("inpout32.dll", EntryPoint = "Out32")]
public static extern void Out32(int address, int value);

视窗每 re或重新启用后我必须指出:

Out32(0x378 + 2, 0x00);

因此,港口能够妥善运作。我认为,问题在于双向环境(在0x37A的第六轨道上控制港口)。

友情链接