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Re: usb to serial



On Sunday 04 May 2008, NN_il_Confusionario wrote:
> On Sun, May 04, 2008 at 01:49:24PM +1000, Daniel Dalton wrote:
> > - a supported usb to serial cable for linux that works with the
> > kernel? - If the kernel supports it will a software daemon (brltty)
> > support it?
>
> I have never used such converters, but some info can be found in
>
>   Linkname: Device categories
>         URL: http://www.qbik.ch/usb/devices/showdevcat.php?id=12
>
>   Linkname: USB Serial Converter support
>         URL: http://www.linux-usb.org/USB-guide/x356.html

I missed the other posts in this thread, but just recently I finished a 
C++ program to communicate with a specific device (an HD radio -- for 
carputers, it'll soon be part of LinuxICE).  While the original cable 
was intended to be connected to the RS232C port, I found that I had no 
problem controlling the radio through a USB->RS232 converter.  I used 
an adaptor that identified itself as ATEN and the other person who was 
testing my code used one with a chip from something like Prolific or 
Proliant.  I don't remember names like that very well.

I do know we tried one from a company called Cables Plus.  I don't what 
the chipset in it was, but it didn't work too well.  It's possible it 
could work, but I didn't have time to check all the settings.

I did find that I had to be extra careful to do things in my code like 
make sure I specified to the serial port object (in C++) to hang up on 
closing for the adaptor, so while they work okay, they do seem to be a 
tad pickier on protocols, or at least some are.

And as for versions, I was doing the programming on Kubuntu Gusty (or 
Gutsy if it hasn't had any beans) and it also ran well on Sarge.  
Neither had any exotic kernel setup.

Hal


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