FT245AM - lost USB device?

Hi,
we are using a FT245AM connected USB printer in our embedded machine which
is running Linux. For any reason sometimes the device is lost. Since we do
not know if it is caused by hardware, printer firmware or operating system
I'm looking for people with similar experiences and maybe workarounds. 

Regards, Klaus

Klaus Hitschler wrote:

> Hi,
> we are using a FT245AM connected USB printer in our embedded machine which
> is running Linux. For any reason sometimes the device is lost. Since we do
> not know if it is caused by hardware, printer firmware or operating system
> I'm looking for people with similar experiences and maybe workarounds. 
> 

I had nightmares with this kind of stuff, I was cursing FTDI as idiots 
until I tried it on another computer. It worked perfectly, without any 
problems whatsoever, apparently forever (though I didn't test it that 
long). The problem was the PC chipset (SiS in this case). Yes, even big 
famous companies can make mistakes.

Paul Burke

On some PC's I noticed the same problems (with FT232BM),
how can I see what USB chipset is used ?

Stef Mientki

Paul Burke wrote:
> Klaus Hitschler wrote:
> 
>> Hi,
>> we are using a FT245AM connected USB printer in our embedded machine 
>> which
>> is running Linux. For any reason sometimes the device is lost. Since 
>> we do
>> not know if it is caused by hardware, printer firmware or operating 
>> system
>> I'm looking for people with similar experiences and maybe workarounds.
> 
> 
> I had nightmares with this kind of stuff, I was cursing FTDI as idiots 
> until I tried it on another computer. It worked perfectly, without any 
> problems whatsoever, apparently forever (though I didn't test it that 
> long). The problem was the PC chipset (SiS in this case). Yes, even big 
> famous companies can make mistakes.
> 
> Paul Burke
> 

see alimentation parameters in usb host : when no activitie the usb host
stop particulary with all usb serial and parallel devices : prolifics or
ftdi
try to connect without usb hub and with usb1.1
i have the same probleme with thinkpad and nec laptop : now its ok



"Stef Mientki" <S.Mientki-nospam@mailbox.kun.nl> a &#4294967295;crit dans le message de
news:cdqr91$mam$1@odysseus.uci.kun.nl...
> On some PC's I noticed the same problems (with FT232BM),
> how can I see what USB chipset is used ?
>
> Stef Mientki
>
> Paul Burke wrote:
> > Klaus Hitschler wrote:
> >
> >> Hi,
> >> we are using a FT245AM connected USB printer in our embedded machine
> >> which
> >> is running Linux. For any reason sometimes the device is lost. Since
> >> we do
> >> not know if it is caused by hardware, printer firmware or operating
> >> system
> >> I'm looking for people with similar experiences and maybe workarounds.
> >
> >
> > I had nightmares with this kind of stuff, I was cursing FTDI as idiots
> > until I tried it on another computer. It worked perfectly, without any
> > problems whatsoever, apparently forever (though I didn't test it that
> > long). The problem was the PC chipset (SiS in this case). Yes, even big
> > famous companies can make mistakes.
> >
> > Paul Burke
> >

Hi,

please explain, what do you mean with "alimentation parameters in usb host"?

Klaus

macaby wrote:

> see alimentation parameters in usb host : when no activitie the usb host
> stop particulary with all usb serial and parallel devices : prolifics or
> ftdi
> try to connect without usb hub and with usb1.1
> i have the same probleme with thinkpad and nec laptop : now its ok
> 
> 
> 
> "Stef Mientki" <S.Mientki-nospam@mailbox.kun.nl> a &#4294967295;crit dans le message
> de news:cdqr91$mam$1@odysseus.uci.kun.nl...
>> On some PC's I noticed the same problems (with FT232BM),
>> how can I see what USB chipset is used ?
>>
>> Stef Mientki
>>
>> Paul Burke wrote:
>> > Klaus Hitschler wrote:
>> >
>> >> Hi,
>> >> we are using a FT245AM connected USB printer in our embedded machine
>> >> which
>> >> is running Linux. For any reason sometimes the device is lost. Since
>> >> we do
>> >> not know if it is caused by hardware, printer firmware or operating
>> >> system
>> >> I'm looking for people with similar experiences and maybe workarounds.
>> >
>> >
>> > I had nightmares with this kind of stuff, I was cursing FTDI as idiots
>> > until I tried it on another computer. It worked perfectly, without any
>> > problems whatsoever, apparently forever (though I didn't test it that
>> > long). The problem was the PC chipset (SiS in this case). Yes, even big
>> > famous companies can make mistakes.
>> >
>> > Paul Burke
>> >

> please explain, what do you mean with "alimentation parameters in usb host"?

"alimentation" = "power" in French.

Stef Mientki <S.Mientki-nospam@mailbox.kun.nl> wrote:

>On some PC's I noticed the same problems (with FT232BM),
>how can I see what USB chipset is used ?
>
If the PC runs Linux perhaps this gives enough info for you:

   lspci | grep USB

On windows goto 'Device Manager'

Joop

Stef Mientki wrote:

> On some PC's I noticed the same problems (with FT232BM),
> how can I see what USB chipset is used ?
> 

Using Windows, Control Panel->System->Device Manager->USB Controllers 
will tell you what type of USB devices are in use.

Paul Burke

Paul Burke <paul@scazon.com> wrote in message news:<2mjjc0FmojdlU1@uni-berlin.de>...
> Stef Mientki wrote:
> 
> > On some PC's I noticed the same problems (with FT232BM),
> > how can I see what USB chipset is used ?
> > 
> 
> Using Windows, Control Panel->System->Device Manager->USB Controllers 
> will tell you what type of USB devices are in use.
> 
> Paul Burke

There is a utility called "usbview.exe" from Microsoft.  If it is not
already installed on your PC then you can get a copy from several
sources, one of which is FTDI.  Probably need to browse around in
their application notes and downloads/utilties area to find it.

A quick Google shows that some people have found it on the Win98 CD 
in Tools\ResKit\diagnose\

Rob Young
rwy_nospam_oung@ieee.org