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USB Testing Hardware

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  USB Testing Hardware Farhan <farhan@janisary.us> - 2014-12-28 06:46 -0500
    Re: USB Testing Hardware Clemens Ladisch <clemens@ladisch.de> - 2015-01-03 00:03 +0100
      Re: USB Testing Hardware Poutnik <poutnik@privacy.net> - 2015-01-03 00:33 +0100
        Re: USB Testing Hardware Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2015-01-03 10:50 +0000
          Re: USB Testing Hardware Poutnik <poutnik@privacy.net> - 2015-01-03 12:44 +0100

#2653 — USB Testing Hardware

Hi,

Does anyone have any recommendations for a simple USB device that I can
purchase and use as to testing device to reverse engineer and write a
simple device driver? Ideally this device would:

* Primary sends Interrupt messages.
* Send simple commands that a human could easily read and comprehend -
it would be nice if it had more than just a few simple commands between
the OS and hardware.
* Has the ability for the device to the computer.
* Has an existing Windows driver for reversing.
* Is relatively low cost :-)

Even if it was as simple as turning lights on and off, or display a
message that would be fine. Not a requirement, but it would be cool if
no one else has done work on device, so that I can write a brand new
Linux driver.

Thanks!
- Farhan

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#2654

Farhan wrote:
> Does anyone have any recommendations for a simple USB device that I can
> purchase and use as to testing device to reverse engineer and write a
> simple device driver? Ideally this device would:
>
> * Primary sends Interrupt messages.
> * Send simple commands that a human could easily read and comprehend -
> it would be nice if it had more than just a few simple commands between
> the OS and hardware.
> * Has the ability for the device to the computer.

This sentence no verb.

> * Has an existing Windows driver for reversing.

How is the _need_ to reverse engineer a feature?
What is the actual problem you're trying to solve?

> * Is relatively low cost :-)
>
> Even if it was as simple as turning lights on and off, or display a
> message that would be fine.

Except for the reverse engineering, the best fit would be a development
board for a USB microcontroller.  This would mean that you'd also have
to write the device's firmware.  Is this what you'd want to do?

> Not a requirement, but it would be cool if no one else has done work
> on device, so that I can write a brand new Linux driver.

All interesting devices already have a Linux driver ...


Regards,
Clemens

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#2655

Dne 1/3/2015 v 12:03 AM Clemens Ladisch napsal(a):

> 
>> Not a requirement, but it would be cool if no one else has done work
>> on device, so that I can write a brand new Linux driver.
> 
> All interesting devices already have a Linux driver ...
> 

Who decides what is an interesting device ?



-- 
Poutnik

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#2656

On Sat, 03 Jan 2015 00:33:24 +0100, Poutnik wrote:

> Dne 1/3/2015 v 12:03 AM Clemens Ladisch napsal(a):
>> All interesting devices already have a Linux driver ...

> Who decides what is an interesting device ?

I would say by definition, if it does not have a Linux driver it is not 
interesting to at least 90% of the people here.

If it lacks a driver but has specifications it might still be interesting 
to the other 10%.

Hardware without a driver is useless. It is a lot easier to buy harware 
that works than trying to get non working hardware to work.

regards Henrik
-- 
The address in the header is only to prevent spam. My real address is:
hc351(at)poolhem.se Examples of addresses which go to spammers:
root@localhost postmaster@localhost

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#2657

Dne 1/3/2015 v 11:50 AM Henrik Carlqvist napsal(a):
> On Sat, 03 Jan 2015 00:33:24 +0100, Poutnik wrote:
> 
>> Dne 1/3/2015 v 12:03 AM Clemens Ladisch napsal(a):
>>> All interesting devices already have a Linux driver ...
> 
>> Who decides what is an interesting device ?
> 
> I would say by definition, if it does not have a Linux driver it is not 
> interesting to at least 90% of the people here.
> 
> If it lacks a driver but has specifications it might still be interesting 
> to the other 10%.
> 
> Hardware without a driver is useless. It is a lot easier to buy harware 
> that works than trying to get non working hardware to work.
> 
> regards Henrik
> 

I see and agree.

There is also a category,
having specs and drivers,
but being a challenge for a Linux user
who just want to use Linux as a tool,
as an OS underlying his tasks and application.

Like DTV USB dongles,
in past Analog PCI or USB TVs,
or even some wifi chips on older notebooks
( like Broadcom on old Dells )

-- 
Poutnik

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