[time-nuts] OT : different Rx and Tx baud rate on same port

[Paul Alfille]

The posix C library supports this. http://linux.die.net/man/3/tcsetattr
with the cfsetispeed and cfsetospeed functions.

We do something similar to synthesize 1-wire protocol with the serial port
by switching between baud rates to change from data to reset pulses. It
works pretty well depending on how well your usb-serial convertor supports
corner cases.

Of course this requires writing your own software.

Paul Alfille


On Fri, Dec 6, 2013 at 11:48 PM, James Tucker <james.d.tucker at gmail.com>wrote:

> Björn;
>
> What platforms (HW and OS) are we considering?  If I were writing the
> software, I'd seriously consider using two ports.
>
> JimT
>
> Sent from *my* galaxy (Nexus).
> On Dec 6, 2013 9:33 PM, Björn <bg at lysator.liu.se> wrote:
>
> > Hi,
> >
> > I am looking for current serial adapters that support split baud rates.
> > That is different input and output baud rate.
> >
> > Grateful for suggestions!
> >
> > kind regards,
> >
> >      Björn
> >
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