Parallel port programming in c#(to control a led light)

[Malli510]

As i want control a led light

i attached it's +ve to D-0 and negative to ground pin in parallel port

the led glows when system boots up
and i have written my program in c#.net
as below

---

Code C# - [expand]
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using System;
using System.Runtime.InteropServices;
 
public class PortAccess
{
 
    [DllImport("inpoutx64.dll", EntryPoint = "Out32")]
    public static extern void Output(int adress, int value);
 
    [DllImport("inpoutx64.dll", EntryPoint = "Inp32")]
    public static extern int Input(int adress);
 
}
 
and i place my inpoutx64.dll in 
C:/windows/system/
 
C:/windows/system32/
 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication1
{
    class Program
    {
        public static void Main(string[] args)
        {
            int address = 888;
            int value;
            PortAccess.Output(888,255);
            value = PortAccess.Input(address);
            Console.WriteLine(value);
            PortAccess.Output(888,0);
            Console.ReadLine();
 
        }
    }
}

---

when i run the program it shows no error and runs fine but the led is not glowing

can anyone plz help ..me
thanks in advance;

 

[papunblg]

https://www.codeproject.com/Articles/4981/I-O-Ports-Uncensored-1-Controlling-LEDs-Light-Emit

 

[Malli510]

thanks for the link but can you explain what's wrong in my code ,

it seems inpoutx64.dll is working fine but how does it link with hwinterface.sys file *(does it create's it own hwinterface.sys or do i need to download it )*

if i have hwinterface.sys file how to link it with inpoutx64.dll or do i need place it some where

https://obrazki.elektroda.pl/76_1341208219.gif

 

[papunblg]

You need to put the driver file in your System32\Drivers folder. Make sure, if your using XP/2003 x64 Editions, to put the 64bit version there (hwinterfacedrvx64.sys) instead of the original 32bit version (hwinterface.sys)

See more **broken link removed**

 

[Malli510]

even after placing hwinterfacex64.sys file in system32/driver/ folder the led is not glowing .... my program runs well and it shows no errors or warnings....

 

[RobBickelBSC]

You are setting your output back to off before you are doing the console.read
try changing your main to this:

public static void Main(string[] args)
{
int address = 888;
int value;
value = PortAccess.Input(address);
Console.WriteLine(value);
//FF or 255 D0-D7 on
PortAccess.Output(888,255);
Console.ReadLine();
//00 or 0 D0-D7 off
PortAccess.Output(888,0);
Console.ReadLine();
}

As i want control a led light

i attached it's +ve to D-0 and negative to ground pin in parallel port

the led glows when system boots up
and i have written my program in c#.net
as below

---

Code C# - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
using System;
using System.Runtime.InteropServices;
 
public class PortAccess
{
 
    [DllImport("inpoutx64.dll", EntryPoint = "Out32")]
    public static extern void Output(int adress, int value);
 
    [DllImport("inpoutx64.dll", EntryPoint = "Inp32")]
    public static extern int Input(int adress);
 
}
 
and i place my inpoutx64.dll in 
C:/windows/system/
 
C:/windows/system32/
 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication1
{
    class Program
    {
        public static void Main(string[] args)
        {
            int address = 888;
            int value;
            PortAccess.Output(888,255);
            value = PortAccess.Input(address);
            Console.WriteLine(value);
            PortAccess.Output(888,0);
            Console.ReadLine();
 
        }
    }
}

---

when i run the program it shows no error and runs fine but the led is not glowing

can anyone plz help ..me
thanks in advance;