How Do I Define An Isr (Interrupt Routine) In C#?

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I need to map the IRQ 7 of parallel port to its interrupt routine.I am doing this in C#.Can any body suggest how do i define the ISR in this language?

eg. in C we use

#pragma interrupt before the ISR.

what do we do in C#?

Posted 12-Jan-15 18:53pm

Member 11362771

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[no name] 13-Jan-15 1:55am

In answer to your comment "polling also is not possible in our case". How can that be true? You need a background thread to poll the port. Your whole system lacks design if you planned on using ISRs in C#.

Sergey Alexandrovich Kryukov 13-Jan-15 2:21am

You are right, but...

We all should understand that polling is bad, and general situation with computing is really bad these days. Commodity devices are all perfectly fine, but also there is such thing as non-standard hardware and industrial-grade hardware. Here is what happened: stupid (non-educated) software developers majorly filling the segment of industry, nearly totally lost the skills of developing interrupt-based driver operation since protected mode use was implemented. I face it all the time. Narrow-specialized people are not ready for that.

—SA

[no name] 13-Jan-15 2:35am

Agreed.

Member 11362771 13-Jan-15 2:13am

@pwasser
I am new to C#..want to use the interrupt capability of parallel port of the laptop.How can i do this in C#?

It raises an interrupt wen ACK pin(pin 10) is given a rising edge if IRQ bit of control port is set to 1.

Can u pls suggest any idea?

Sergey Alexandrovich Kryukov 13-Jan-15 2:23am

Yes, this is the idea: just forget it, for now. Then learn WDK (Windows Driver Kit) and protected-mode programming, and then you will be able to solve such problems.
—SA

[no name] 13-Jan-15 2:34am

As you can see it is not simple. You may wish to improve your question to explain why you need to respond to port interrupt and which OS you are using. Parallel port in a laptop?

Sergey Alexandrovich Kryukov 13-Jan-15 2:43am

Right. By the way, there is a number of articles on parallel-port controls here on CodeProject.
—SA

Member 11362771 13-Jan-15 3:35am

i have gone through the links on parallel port programming..but none of them mention about the interrupt..

i want to do something similar to this...pls check the link below

http://retired.beyondlogic.org/spp/parallel.htm

Section: using Parallel ports interrupts

[no name] 13-Jan-15 4:05am

We know all along what you want to do. The answers refer to what you can do. Take your pick. As I suggested add more detail to the question and an alternative path may be suggested. This one has reached a dead end as there is no direct equivalent to c isrs in c# except possibly if you are using WinCE.

2 solutions

Solution 3

Check this article, might handy for you!

LED Controlled by Parallel Port Using C#[^]

Posted 12-Jan-15 20:42pm

_Asif_

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Sergey Alexandrovich Kryukov · Accepted Answer · 2015-01-12T19:06:00

You cannot. The OS which are capable of running CLR do not allow setting ISR on the application level. Moreover, ISR is the concept of real mode. In protected mode, you would have to set up a separate descriptor segment for interrupt processing.
Please see:
http://en.wikipedia.org/wiki/Protection_ring[^],
http://en.wikipedia.org/wiki/Protected_mode[^].

[EDIT]

Please see my comments to the question. To solve such problems, you need to learn WDK and protected-mode programming. Please see:
http://en.wikipedia.org/wiki/Windows_Driver_Kit[^],
http://www.microsoft.com/whdc/devtools/wdk/default.mspx[^],
http://msdn.microsoft.com/en-us/library/windows/hardware/hh852365.aspx[^].

No, you cannot do it in C#. Not for present-day Windows system. Not only this is native programming only, this is also kernel-mode programming. These days, some Assembly Language will be required, in addition to the native code targeted high-level programming language.

—SA