[Voyage-linux] Error connecting multiple PL2303 Serial Converter

[Michael Steinmann]

yes, but unless you have an alix with internal usb headers (e.g. alix2d13)
you will need an USB-hub for so many devices.

-Michael

2012/1/18 Pippo Pippo 77 <pippopippo77 at email.it>

> Hi MIchael,
> last question.
> I have to connet 3/4 of this adapter to same Alix box with Voyage linux.
> It will works from your experience?
> Thanks and good night
>
>
> 2012/1/18 Michael Steinmann <mike.steinmann at gmail.com>
>
>> I have such cables, and they are fully supported by Linux.
>> AFAIK there is no multiple adapter chipset, see
>> http://www.silabs.com/products/interface/usbtouart/Pages/usb-to-uart-bridge.aspx
>> There are even (windows) tools to completely rename the PID/VID and set
>> the product string, see:
>>
>> http://www.silabs.com/pages/DownloadDoc.aspx?FILEURL=Support%20Documents/Software/an144sw.zip&src=SoftwardDownloadsWebPart
>>
>> I've produced PCBs with the CP2102 and I really can recommend them, let
>> me know if you want to go that road...
>>
>> Best regards,
>> Michael Steinmann
>>
>>
>>
>>
>> 2012/1/18 Pippo Pippo 77 <pippopippo77 at email.it>
>>
>>> Hi Michael,
>>> and thanks for your help.
>>> I have a couple of question regarding cp210x adapter, and I would
>>> appreciate if you can help me.
>>>
>>> 1) Do voyage 0.5 with 2.6 Branck kernel have driver for this?
>>> 2) Do voyage 0.8 with 3.0 kernse have driver too?
>>> 3) Do you know if exist multiple adapter based on this chipset? For
>>> example 1 USB but 2/4 serial Port?
>>>
>>>
>>> Many Thanks
>>>
>>>
>>> 2012/1/18 Michael Steinmann <mike.steinmann at gmail.com>
>>>
>>>> Hi,
>>>>
>>>> I had bad experiences with Profilic based adaptors, they are a POS!
>>>> Get a silicon labs cp210x based adaptor, which I think are even better
>>>> than those from FTDI.
>>>>
>>>>
>>>> http://www.alibaba.com/product-gs/288753118/cp2102_usb_rs232_cable_VCC_GND.html
>>>>
>>>> http://connectingcables.en.alibaba.com/product/326571577-210803458/CP2102_FT232_PL2323_optional_RS232_to_USB_adapter_cable.html
>>>>
>>>> -Michael
>>>>
>>>>
>>>> 2012/1/18 Pippo Pippo 77 <pippopippo77 at email.it>
>>>>
>>>>> Hi,
>>>>> i need to connet 2 PL2303 serial converter in order to get 2 serial
>>>>> port.
>>>>> I tried this with voyage 0.8 and voyage 0.5, and behaviour is the same.
>>>>>
>>>>> When I connect the converters, i got some message in dmesg log, that
>>>>> told me that converters is attached to /dev/ttyUSB0 and /dev/ttyUSB1.
>>>>>
>>>>> If i use this converter one by one, it work without problem, but i
>>>>> need to use it together with 2 modem at same time.
>>>>> In this case, the second device I try to open with minicom, it would
>>>>> not connect and i got this message into dmesg log:
>>>>>
>>>>> *pl2303_open - failed submitting interrupt urb, error -28*
>>>>>
>>>>> I tried with Voyage 0.8 with new kernel but problem persist. Useing
>>>>> device one a time, works perfectly, but together not, the second i try to
>>>>> use i got this interrupt urb error.
>>>>> What can cause this? What can i try?
>>>>>
>>>>> Any help would be appreciated. Many Thanks in Advance.
>>>>>
>>>>> Marco
>>>>>
>>>>> _______________________________________________
>>>>> Voyage-linux mailing list
>>>>> Voyage-linux at list.voyage.hk
>>>>> http://list.voyage.hk/mailman/listinfo/voyage-linux
>>>>>
>>>>>
>>>>
>>>
>>
>
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