Hi all
I am writing a KMDF driver for a custom device. The requirement is to trigger an event from driver to application when there is a device state change.How to do that in KMDF driver ?.
Use an inverted call see http://www.osronline.com/article.cfm?article=605
for an article how to do this.
Don Burn
Windows Driver Consulting
Website: http://www.windrvr.com
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Sent: Friday, February 20, 2015 8:51 PM
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Subject: [ntdev] KMDF driver
Hi all
I am writing a KMDF driver for a custom device. The requirement is to
trigger an event from driver to application when there is a device state
change.How to do that in KMDF driver ?.
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Have the app send an ioctl, the driver queues it and when the event happens, complete the ioctl. You cab even provide event data in the output buffer
d
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From: xxxxx@gmail.commailto:xxxxx
Sent: ?2/?20/?2015 5:51 PM
To: Windows System Software Devs Interest Listmailto:xxxxx
Subject: [ntdev] KMDF driver
Hi all
I am writing a KMDF driver for a custom device. The requirement is to trigger an event from driver to application when there is a device state change.How to do that in KMDF driver ?.
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You can also look at PnP notifications (IoReportXxx calls), which are possibly OK for some simplest cases.
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Maxim S. Shatskih
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wrote in message news:xxxxx@ntdev…
> Hi all
> I am writing a KMDF driver for a custom device. The requirement is to trigger an event from driver to application when there is a device state change.How to do that in KMDF driver ?.
>
Hi
Thank you all . I have one more query regarding logging events generated by driver. I want to log only particular events happening in a driver in to file . Is this possible ? can you tell me how to do that?..
The easy answer would be to just call ZwWriteFile… Note that you have to be at IRQL PASSIVE_LEVEL when you do so.
Peter
OSR
@OSRDrivers