Callbacks from driver-here's a sample code link

NTDEV
1

here’s one more sample code

http://www.codeguru.com/system/GUIDevice.html

here’s the sample code…just put the KeSetEvent function inside the DPC of your isr function…

good luck,

shiv
----- Original Message -----
From: Tushar Samnerkar
To: NT Developers Interest List
Sent: Tuesday, December 17, 2002 2:19 PM
Subject: [ntdev] Re: Callbacks from driver

Hi Shiva,

Thanks for the quick response.
What I understood from the reply:

  1. Creation of the object in Dll.
  2. Send that instance to Driver through DeviceIoControl.
  3. Driver will independently update this with its own ISR.
  4. Poll this object in DLL from other function.
    So polling will in between DLL-DLL, I am not getting rid of Polling.

Is there any similar kind of code available somewhere on net ?

Thanks once again,
Tushar
----- Original Message -----
From: Shiva Prasad T.S.
To: NT Developers Interest List
Sent: Tuesday, December 17, 2002 11:02 AM
Subject: [ntdev] Re: Callbacks from driver

Hi,

Inside a function in dll, create an user mode event object and send it to your driver via DeviceIoControl, after that wait for a the object to get signalled from the kernel mode and followed by ,u call a another function which service the required stuffs in user mode as isr.

In kernel mode driver, use ObReferenceObjectByHandle to get a kernel mode event and set the event in the Dpc for ISr routine.

once interrupt occurs, your driver isr-dpc sets the event, and the user mode waiting event would get signalled and the following function would get executed…

hope this idea helps…

shiv
----- Original Message -----
From: Tushar Samnerkar
To: NT Developers Interest List
Sent: Tuesday, December 17, 2002 10:45 AM
Subject: [ntdev] Callbacks from driver

hi all,

I am very novice for driver writing. I wanted to write a routine which will
callback to DLL when my card generates a interrupt. (ISR Routine)
pl guide some links or codes which will help to resolve this problem.

Thanks in advance,
Tushar

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