USB Host Controller Diagnostics - Urgent

NTDEV
1

Hello Devs,

I am not sure if this is the right place to ask this question. But
i felt there is no other better place that i know.

Is it possible to perform diagnosis for a USB Controller without a
OS ? Or is writing a Host Controller driver the only way to do
diagnoasis for USB controler ?

Thanx in advance
Anandhi

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2

What do you mean by “without an OS”?

What part of the HC do you want to do diagnostics on?

Unless you’re relying on a 1.1 controller to control your keyboard / mouse
using legacy control in conjunction with the BIOS you can do just about
whatever you want to the host controller. (Given all the caveats about
programming and protection models of the current state of your processor and
any OS that might be running, blah, blah).

-----Original Message-----
From: Anandhi [mailto:xxxxx@rediffmail.com]
Sent: Sunday, June 30, 2002 11:53 PM
To: NT Developers Interest List
Subject: [ntdev] USB Host Controller Diagnostics - Urgent

Hello Devs,

I am not sure if this is the right place to ask this question. But
i felt there is no other better place that i know.

Is it possible to perform diagnosis for a USB Controller without a
OS ? Or is writing a Host Controller driver the only way to do
diagnoasis for USB controler ?

Thanx in advance
Anandhi

Click below to experience Aishwarya Rai’s beauty secrets. New
International Lux Skincare - It’s not just soap, It’s skincare.
http://www.luxskincare.com

You are currently subscribed to ntdev as: xxxxx@nvidia.com
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3

Hi Mark Overby,

What do you mean by “without an OS”?

I meant - “Without a full fledged OS with USB system s/w”
Ofcourse a BIOS will be present.

What part of the HC do you want to do diagnostics on?

I am just trying to analyse how much of diagnosis can be done with a 1.1
USB host controller and any USB device connected to it. With no USB stack.
With this setup may be i can write code to do device enumeration and
reading configuration information form enpoint0 of the connected USB
device.

  1. I’d like to know if it is feasible to do some read /write transaction
    to other enpoints ?
  2. Is it worth the effort or is it better to do such testing with a full
    fledged OS and with standard USB system software and standard drivers ?
  3. Any other pointers or suggestion are most welcomed.

Best Regards
Anandhi

4

Hi, all

I have an abstract question about DeviceIoCancel().
I have an experience like that I got to DeviceIoCancel() after DeviceClose()
and then set handle of timer NULL under Windows NT4.0 Terminal Server
Edition.
After all the above leads to pass a NULL pointer to IoCancelTimer(), I got
BSOD.

Is anyone who had a such experience before?
If anyone know it, Could you tell me about the detail?

Futoshi

5

IMO, what you want to do is not worth the effort. Just use an OS. If you
want full access to the stack code, use Linux.

  • Dennis

Dennis Merrill
Embedded Systems Engineer
Thermo?Electron Corporation
Spectroscopy Division

-----Original Message-----
From: Anandhi [mailto:xxxxx@rediffmail.com]
Sent: Tuesday, July 02, 2002 12:35 AM
To: NT Developers Interest List
Subject: [ntdev] RE: USB Host Controller Diagnostics - Urgent

Hi Mark Overby,

What do you mean by “without an OS”?

I meant - “Without a full fledged OS with USB system s/w”
Ofcourse a BIOS will be present.

What part of the HC do you want to do diagnostics on?

I am just trying to analyse how much of diagnosis can be done with a 1.1
USB host controller and any USB device connected to it. With no USB stack.
With this setup may be i can write code to do device enumeration and
reading configuration information form enpoint0 of the connected USB
device.

  1. I’d like to know if it is feasible to do some read /write transaction
    to other enpoints ?
  2. Is it worth the effort or is it better to do such testing with a full
    fledged OS and with standard USB system software and standard drivers ?
  3. Any other pointers or suggestion are most welcomed.

Best Regards
Anandhi

You are currently subscribed to ntdev as: xxxxx@thermonicolet.com
To unsubscribe send a blank email to %%email.unsub%%

6

Yeah, I’d have to second that. You’ll have all kinds of fun managing
descriptors and other host controller data structures unless you’re in some
sort of 32-bit OS.

I’d say leverage what people have already done. (Read creative use of filter
drivers)

-----Original Message-----
From: xxxxx@thermonicolet.com [mailto:xxxxx@thermonicolet.com]
Sent: Tuesday, July 02, 2002 5:50 AM
To: NT Developers Interest List
Subject: [ntdev] RE: USB Host Controller Diagnostics - Urgent

IMO, what you want to do is not worth the effort. Just use an OS. If you
want full access to the stack code, use Linux.

  • Dennis

Dennis Merrill
Embedded Systems Engineer
Thermo?Electron Corporation
Spectroscopy Division

-----Original Message-----
From: Anandhi [mailto:xxxxx@rediffmail.com]
Sent: Tuesday, July 02, 2002 12:35 AM
To: NT Developers Interest List
Subject: [ntdev] RE: USB Host Controller Diagnostics - Urgent

Hi Mark Overby,

What do you mean by “without an OS”?

I meant - “Without a full fledged OS with USB system s/w”
Ofcourse a BIOS will be present.

What part of the HC do you want to do diagnostics on?

I am just trying to analyse how much of diagnosis can be done with a 1.1
USB host controller and any USB device connected to it. With no USB stack.
With this setup may be i can write code to do device enumeration and
reading configuration information form enpoint0 of the connected USB
device.

  1. I’d like to know if it is feasible to do some read /write transaction
    to other enpoints ?
  2. Is it worth the effort or is it better to do such testing with a full
    fledged OS and with standard USB system software and standard drivers ?
  3. Any other pointers or suggestion are most welcomed.

Best Regards
Anandhi

You are currently subscribed to ntdev as: xxxxx@thermonicolet.com
To unsubscribe send a blank email to %%email.unsub%%

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