Lpc2000

Sent: Wednesday, April 19, 2006 8:51 AM
Subject: [lpc2000] USB CDC standard inf file


>I would like to use CDC USB class to replace RS232 interface for a
> product implemented with LPC2148.
>
> I have some (mostly "windows") questions:
>
> 1. Does microsoft provide standard INF file for the CDC driver?
> 2. If not, is it possible to define inside INF file the port number
> (e.g. COM9, COM27 etc..)?
> 3. Where is "normally" usbser.sys after WINxxx installation?
>
>
>
> I am sorry for going slightly offtopic, but it's related to LPC214x.
>
> Marko

The FreeRTOS.org download includes a CDC driver (provided by a third party) 
for the SAM7.  When interfacing to Windows for the first time Windows just 
automatically recognised this and installed the CDC driver, so it must have 
a standard inf.  You could copy the descriptors for your LPC version (look 
in the lwIP/Rowley demo directory).

On my XP computer usbser.sys is in C:\WINDOWS\system32\drivers.

Regards,
Richard.

http://www.FreeRTOS.org
*Now for ARM CORTEX M3!*

  ----- Original Message ----- 
  From: rohan patil 
  To: lpc2000@yahoogroups.com 
  Sent: Tuesday, April 18, 2006 11:36 PM
  Subject: [lpc2000] DM9000 interface


     hi everybody..
  please give me solution for follwing.

  i m interfacing dm9000 ethernet controller ic with
  microcontoller

  i have used memory mapping for interfacing it.

  cmd pin is connected to adress line A2
  Chip sellect CS is generated by A17=0,A18=1,A19=0
  AD0 to AD15 lines are used for address data port of
  dm9000
  so veriable DMADDR is at address 40000h
  & DMDATA is at address 40004h;

  Read write lines of microcontroller are properly
  connected to dm9000

  in this way can i access the address & data ports of
  dm 9000 by accessing DMADDR & DMDATA?


  Please help!!!!


  Regards

  Rohan Patil




              
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[Non-text portions of this message have been removed]

> Marko Pavlin wrote:
>  > I would like to use CDC USB class to replace RS232 interface for a
>  > product implemented with LPC2148.
> 
> I'm also working on a USB CDC class driver for the LPC214x.
> 
>  >
>  > I have some (mostly "windows") questions:
>  >
>  > 1. Does microsoft provide standard INF file for the CDC driver?
> 
> Not as far as I know.
> 
>  > 2. If not, is it possible to define inside INF file the port number
>  > (e.g. COM9, COM27 etc..)?
> 
> In my experience, windows just assigns the next available com port.
> 
> When resetting the USB CDC device while it is open (e.g. in HyperTerm)
> the 'next available com port' is increased. For example, when virtual
> COM3 is opened in hyperterm and the device is plugged/unplugged,
> COM3 gets 'zombified' and the device is now assigned COM4.
> 
> There was some recent discussion about making a USB CDC COM port
> persistent on the usb.org discussion forums.
> 
>  > 3. Where is "normally" usbser.sys after WINxxx installation?
> 
> I had to manually extract it from one of the .cab files in
> <windows root>\Driver Cache\i386
> (driver.cab or sp2.cab)
> 
> Regards,
> Bertrik
> 
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> ------------------------------------------------------------------------
>

> Thank you!
> 
> What "USB stack" do you use? I checked keil USB demos and it looks very 
> nice. Unfortunately they implemented mass storage, audio and HID class 
> so far.
> 
> Marko
> 
> 
> Bertrik Sikken wrote:
>> Marko Pavlin wrote:
>>  > I would like to use CDC USB class to replace RS232 interface for a
>>  > product implemented with LPC2148.
>>
>> I'm also working on a USB CDC class driver for the LPC214x.
>>
>>  >
>>  > I have some (mostly "windows") questions:
>>  >
>>  > 1. Does microsoft provide standard INF file for the CDC driver?
>>
>> Not as far as I know.
>>
>>  > 2. If not, is it possible to define inside INF file the port number
>>  > (e.g. COM9, COM27 etc..)?
>>
>> In my experience, windows just assigns the next available com port.
>>
>> When resetting the USB CDC device while it is open (e.g. in HyperTerm)
>> the 'next available com port' is increased. For example, when virtual
>> COM3 is opened in hyperterm and the device is plugged/unplugged,
>> COM3 gets 'zombified' and the device is now assigned COM4.
>>
>> There was some recent discussion about making a USB CDC COM port
>> persistent on the usb.org discussion forums.
>>
>>  > 3. Where is "normally" usbser.sys after WINxxx installation?
>>
>> I had to manually extract it from one of the .cab files in
>> <windows root>\Driver Cache\i386
>> (driver.cab or sp2.cab)
>>
>> Regards,
>> Bertrik