USB device driver

USB device driver

[Sanjeev Lakshmanan]

 Hi all
 
 I need to develop a USB device driver for a custom
 made switch. I shall give a brief description.
 
 The switch has four RJ 45 connectors for ethernet
 cables and it needs to exchange data packets of size
 8 bytes every .5 seconds. The Transmit ethernet
 port(1,2,3,4) and Receive ethernet port(1,2,3,4)
 need to be selected for each transfer and the data   
  packet which is to be sent out and received on those
   ports changes accordingly.
 
 Please let me know how I can start off writing the
 code for  this driver.
 Also please let me know if there are any SIMILAR
 device drivers already developed and available.
 
 I am aware of the files
 usr/src/linux/drivers/usb/usb.*
 but as I have no prior experience with device
drivers,  I am unable to start off.

 I have not yet subscribed to the list. PLease reply
to  survivor_eagles@yahoo.com

 Regards,
 Sanjeev.
 
 


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Re: USB device driver

[Greg KH]

On Wed, Feb 13, 2002 at 12:19:56AM -0800, Sanjeev Lakshmanan wrote:
>  Hi all
>  
>  I need to develop a USB device driver for a custom
>  made switch. I shall give a brief description.
>  
>  The switch has four RJ 45 connectors for ethernet
>  cables and it needs to exchange data packets of size
>  8 bytes every .5 seconds. The Transmit ethernet
>  port(1,2,3,4) and Receive ethernet port(1,2,3,4)
>  need to be selected for each transfer and the data   
>   packet which is to be sent out and received on those
>    ports changes accordingly.

I don't see why you need a USB driver for a switch.  Where is USB in the
above description of your device?

>  Please let me know how I can start off writing the
>  code for  this driver.
>  Also please let me know if there are any SIMILAR
>  device drivers already developed and available.
>  
>  I am aware of the files
>  usr/src/linux/drivers/usb/usb.*
>  but as I have no prior experience with device
> drivers,  I am unable to start off.

I think your company needs to hire some people with device driver
experience :)

>  I have not yet subscribed to the list. PLease reply
> to  survivor_eagles@yahoo.com
> 
>  Regards,
>  Sanjeev.

Why did you post this to lkml and the linux-usb-users mailing lists from
two different accounts, using two different names?

Good luck,

greg k-h

RE: Unable to compile 2.5.4: "control reaches end of non-void functionm"

[Drew P. Vogel]

If it is in processor.h, search the archives. There was a patch for this
submitted to the list about a week ago.

--Drew Vogel

On Wed, 13 Feb 2002, J.S.S. wrote:

>I have this same problem on both my laptop and my testbox.  It happens
>everytime and I have yet to compile 2.5.4 successfully.  Although, I suspect
>it's in my config file - I'm just using an old config file I used for my
>2.4.17 kernel which works just fine.
>
>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org
>[mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Steve Kieu
>Sent: Tuesday, February 12, 2002 8:49 PM
>To: kernel
>Subject: Re: Unable to compile 2.5.4: "control reaches end of non-void
>functionm"
>
>
>
>Hi,
>
>It seems nobody having this problem? No one replies at
>least why, so I just want to add one more case of
>compiling error. Exactly the same message as yours.
>
>
>
>=====
>S.KIEU
>
>http://greetings.yahoo.com.au - Yahoo! Greetings
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>Please read the FAQ at  http://www.tux.org/lkml/
>

--Drew Vogel

USB device driver

[Sanjeev Lakshmanan]

Hi all

I need to develop a USB device driver for a custom
made switch. I shall give a brief description.

 The switch (which is connected to the USB port of a
Linux box running REdHat 7.1) has four RJ 45
connectors for ethernet cables and it needs to
exchange data packets of size 8 bytes every .5
seconds. The Transmit ethernet port(1,2,3,4) and
Receive ethernet port(1,2,3,4) need to be selected for
each transfer and the data packet which is to be sent
out and received on those ports changes accordingly.

Please let me know how I can start off writing the
code for  this driver.

Also please let me know if there are any SIMILAR
device drivers already developed and available.

I am aware of the files
usr/src/linux/drivers/usb/usb.*
but as I have no prior experience with device drivers,
I am unable to start off.

Regards,
Sanjeev.




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