Re: [Libusb-win32-devel] USB to LPT

[Mauricio H. <mhe...@te...>]

Thanks Stephan I think that your suggestion is the right way.

Stephan Meyer wrote:
> Basically it should be possible to control these LPT-USB adapters
> with libusb(-win32). All you need is a datasheet of the chip that's
> used by the adapter and a specification of its high level protocol.
>
> The problem is that all of these devices use different kind of controll=
er
> chips which are most likely not compatible. Supporting all of them by=20
> your application will be hard if not impossible.
>
> If I where you I would design a custum USB-to-DIO converter. This
> will save you (and your customers) a lot of pain.
>
> Have a look at the FTDI web site (http://ftdichip.com/), especially=20
> at their FT245 product. This might be what you need.
>
> Stephan
>
>
>  =20
>> Hi to all:
>>
>> My name is Mauricio and I new on the list, I write you from Chili.
>>
>> I have a very basic question so be patience with me please.
>>
>> I develop a domotic system for people with mobility problems=20
>> (wheelchair, etc) (you can see more about the system in=20
>> http://www.domosoft.cl in the "Galeria Multimedios" section). This=20
>> system use some circuit conected to the PC in the LPT port, so to=20
>> control the circuit my software use the "inpout32.dll" librarie, with=20
>> this librarie I can write and read directly to the memory position of=20
>> the LPT (data, status and control bytes)...and now this is my problem.=
=20
>> Modern computer don't have LPT anymore and a quick way to conect my=20
>> circuit is with a USB to LPT adapter, but with this kind of adapter th=
e=20
>> system have a "virtual lpt port", and I can't write directly in any=20
>> memory position (this is correct right??). So, I want to build some ki=
nd=20
>> of "driver/library" to write in some kind of "usb memory" or access to=
=20
>> the "virtual LPT port" usb adapter and write the numbers for the LPT. =
If=20
>> this posible with libusb-win32??, and also my adapter is recognized on=
=20
>> linux and work with my printer, so is this posible for the linux versi=
on=20
>> of libusb??
>>
>> Thanks and sorry for the long explanation... :-)
>>
>>
>>
>> Mauricio
>>
>>
>> ----------------------------------------------------------------------=
---
>> Using Tomcat but need to do more? Need to support web services, securi=
ty?
>> Get stuff done quickly with pre-integrated technology to make your job=
 easier
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Gero=
nimo
>> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&da=
t=3D121642
>> _______________________________________________
>> Libusb-win32-devel mailing list
>> Lib...@li...
>> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
>>    =20
>
>
> _______________________________________________________________________
> Viren-Scan f=FCr Ihren PC! Jetzt f=FCr jeden. Sofort, online und kosten=
los.
> Gleich testen! http://www.pc-sicherheit.web.de/freescan/?mc=3D022222
>
>
> -----------------------------------------------------------------------=
--
> Using Tomcat but need to do more? Need to support web services, securit=
y?
> Get stuff done quickly with pre-integrated technology to make your job =
easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geron=
imo
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> _______________________________________________
> Libusb-win32-devel mailing list
> Lib...@li...
> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
>
>  =20