Re: serial communication from PC

On Tue, 22 Nov 2005, [email protected] wrote:

> The context is that we want our controller embedded in each
> joint of our robot to speak to a stand PC.
>
> In our first attempt we used the serial port of the computer.
> This works great, but the speed is limited to around
> 115KBaud. We bought a PCI card based on netmos 9735cv chips
> which according to specs can handle much higher baud rates.
> However it seems like the linux kernel (fedora core 3) does not
> acknowledge this and cuts the speed to 115KBaud. Is this
> something other people have experienced? Is there a software
> work around? Is there a particular PCI-card that other people
> have used with succes?
>
> If not what are the alternatives? We really want a
> cheap/fast/reliable communication channel. We are sort
> of planning to use the paralellel port if this fails.
>
The alternatives are all the standard PC communication channels that are
more modern than parallel and serial lines: USB, Firewire, ethernet.
Of these, only ethernet currently has a realtime implementation in free
software: <www.RTnet.org>.

Herman

--
   K.U.Leuven, Mechanical Eng.,  Mechatronics & Robotics Research Group
     <http://people.mech.kuleuven.be/~bruyninc> Tel: +32 16 322480

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