Virtual serial port

NTDEV
1

Hi All,

Is there any difference between USB Virtual Serial Port and USB CDC ACM driver?

Regards,
shruthi

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2

A virtual serial port, usb or not, is just a serial port thay is not based on serial hardware (ie a 16550 user). A random virtual usb port is not necessarily a cdc compliant device, it can really be anything, custom protocol or whatever. what is your fundamental issue? Do you want to reuse someone else’s driver?

d

debt from my phone

From: Shruthi L
Sent: 11/5/2012 10:14 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] Virtual serial port

Hi All,

Is there any difference between USB Virtual Serial Port and USB CDC ACM driver?

Regards,
shruthi

NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars visit:
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To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer

NTDEV is sponsored by OSR

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SASKEN BUSINESS DISCLAIMER: This message may contain confidential, proprietary or legally privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited (“Sasken”) unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email.
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3

Thanks for the information :slight_smile:
I need to develop a a USB Function Driver to implement a USB CDC ACM profile.It should come up as Virtual COM Port in the device manager and when teraterm/Hyperterminal connected to the Virtual COM port, AT command /response should be working through the port.
I have searched in the net, but I got data about Virtual serial port.I would like to know more about USB CDC ACM class driver.
Regards,
Shruthi

From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Doron Holan
Sent: Tuesday, November 06, 2012 12:03 PM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] Virtual serial port

A virtual serial port, usb or not, is just a serial port thay is not based on serial hardware (ie a 16550 user). A random virtual usb port is not necessarily a cdc compliant device, it can really be anything, custom protocol or whatever. what is your fundamental issue? Do you want to reuse someone else’s driver?

d

debt from my phone

From: Shruthi L
Sent: 11/5/2012 10:14 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] Virtual serial port
Hi All,

Is there any difference between USB Virtual Serial Port and USB CDC ACM driver?

Regards,
shruthi

NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars visit:
http://www.osr.com/seminars

To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer

NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars visit:
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To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer

SASKEN BUSINESS DISCLAIMER: This message may contain confidential, proprietary or legally privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited (“Sasken”) unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email.
Read Disclaimer at http://www.sasken.com/extras/mail_disclaimer.html

NTDEV is sponsored by OSR

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NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars visit:
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4

You should do a google search for usbser.sys and try to figure out how
to load that driver for your device. There is lots of info about it on
ntdev.

No need to write a driver just an inf file.

Cheers
/Faik

On Tue, Nov 6, 2012 at 7:53 AM, Shruthi L wrote:
> Thanks for the information :slight_smile:
>
> I need to develop a a USB Function Driver to implement a USB CDC ACM
> profile.It should come up as Virtual COM Port in the device manager and when
> teraterm/Hyperterminal connected to the Virtual COM port, AT command
> /response should be working through the port.
>
> I have searched in the net, but I got data about Virtual serial port.I would
> like to know more about USB CDC ACM class driver.
>
> Regards,
>
> Shruthi
>
>
>
> From: xxxxx@lists.osr.com
> [mailto:xxxxx@lists.osr.com] On Behalf Of Doron Holan
> Sent: Tuesday, November 06, 2012 12:03 PM
>
>
> To: Windows System Software Devs Interest List
> Subject: RE: [ntdev] Virtual serial port
>
>
>
> A virtual serial port, usb or not, is just a serial port thay is not based
> on serial hardware (ie a 16550 user). A random virtual usb port is not
> necessarily a cdc compliant device, it can really be anything, custom
> protocol or whatever. what is your fundamental issue? Do you want to reuse
> someone else’s driver?
>
> d
>
> debt from my phone
>
> ________________________________
>
> From: Shruthi L
> Sent: 11/5/2012 10:14 PM
> To: Windows System Software Devs Interest List
> Subject: [ntdev] Virtual serial port
>
> Hi All,
>
> Is there any difference between USB Virtual Serial Port and USB CDC ACM
> driver?
>
> Regards,
> shruthi
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
> SASKEN BUSINESS DISCLAIMER: This message may contain confidential,
> proprietary or legally privileged information. In case you are not the
> original intended Recipient of the message, you must not, directly or
> indirectly, use, disclose, distribute, print, or copy any part of this
> message and you are requested to delete it and inform the sender. Any views
> expressed in this message are those of the individual sender unless
> otherwise stated. Nothing contained in this message shall be construed as an
> offer or acceptance of any offer by Sasken Communication Technologies
> Limited (“Sasken”) unless sent with that express intent and with due
> authority of Sasken. Sasken has taken enough precautions to prevent the
> spread of viruses. However the company accepts no liability for any damage
> caused by any virus transmitted by this email.
> Read Disclaimer at http://www.sasken.com/extras/mail_disclaimer.html
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer