[Voyage-linux] Error connecting multiple PL2303 Serial Converter

[Michael Steinmann]

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
>
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>
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