Hi Joel,
Without knowing how much information is being sent back and forth
between the systems, I feel it would be easier to implement a
microcontroller 'dongle' in the serial line that responded to the
master in it's time frame and then communicated to the main Linux
system as needed.
I implemented a custom protocol converter which has been running on
an automotive production line without issues for the last 18 months
that reads in a similarly time critical serial (RS485) communications
scheme from a robot and communicates with the rest of my system via
Modbus (RS232). It sends new data immediately as it changes and
buffers the response data which can be updated by the rest of the
system as needed.
However, having said that I have no experiance of RT Linux - I just
had a very tight delivery schedule...
Regards,
PJE
--- In Joel Winarske <> wrote:
>
>
> > Are you talking about sending a character in a 2ms window, or
turning
> > around the communications channel?
> >
>
> It's a master slave model. The slave would be the TS-4000. The
slave
> needs to respond to the bus master in no less than 2ms. 700us
typical,
> 2ms worst case.
>
>
> Joel
>
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