RS-232 driver for GPIO

[Aleksandr Rybalko]

On Tue, 14 May 2013 09:06:44 -0700
Adrian Chadd <adrian at freebsd.org> wrote:

> ... the r-pi actually has an RS232 port exposed via GPIO. It's only
> 3.3v but it's there.
> 
> Someone just needs to write up an SIO driver for it and then put the
> GPIO pins in question into RS232 "mode".

we have it already :) (console works on uart)
only FDT definition is required.
And maybe some fixes for boudrate setting and/or format setup
(bits/parity/stop bits/etc) 

> 
> Yay multi-function GPIO pins!
> 
> 
> 
> adrian
> 
> 
> On 14 May 2013 08:58, Tom Everett <tom at khubla.com> wrote:
> > Good morning ARM mailing list.
> >
> > I've been running FreeBSD on my Pi, and I've now got two XBee Pros
> > which I hope to connect.  XBee's communicate over RS-232.
> >
> > https://www.sparkfun.com/products/8742
> >
> > I see from the source tree that it was possible to attach the iic
> > driver to GPIO pins in software:
> >
> > http://svnweb.freebsd.org/base/head/sys/dev/gpio/gpioiic.c?view=markup
> >
> > I'm wondering, it is possible to connect the FreeBSD serial driver
> > for RS-2332 to GPIO in a similar way to how iic was connected?
> >
> >
> >
> > --
> > A better world shall emerge based on faith and understanding  -
> > Douglas MacArthur
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-- 
Aleksandr Rybalko <ray at freebsd.org>