RS-232 driver for GPIO

[Tom Everett]

Did you mean 14 &15, or 14 & 16?









On Tue, May 14, 2013 at 5:17 PM, Aleksandr Rybalko <ray at freebsd.org> wrote:

> On Tue, 14 May 2013 12:20:08 -0600
> Tom Everett <tom at khubla.com> wrote:
>
> > ok so the FDT definition would have to be added here?
> >
> >
> http://svnweb.freebsd.org/base/head/sys/boot/fdt/dts/bcm2835-rpi-b.dts?view=markup
> >
>
> Yeah, right.
>
> But I have bad news. Both UARTs can be connected to pairs(tx+rx) 14+16,
> 32+33, 40+41 and both UARTs can be connected to any of this pins.
> But only 14, 16 and 40(PWM0) wired to ext.pin.
>
> >
> >
> > On Tue, May 14, 2013 at 10:24 AM, Aleksandr Rybalko <ray at freebsd.org>
> > wrote:
> >
> > > 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>
> > >
> >
> >
> >
> > --
> > A better world shall emerge based on faith and understanding  -
> > Douglas MacArthur
>
>
> --
> Aleksandr Rybalko <ray at freebsd.org>
>



-- 
A better world shall emerge based on faith and understanding  - Douglas
MacArthur