How to get serial port connection to Neo Freerunner? / SOLVED
Al Johnson
openmoko at mazikeen.demon.co.uk
Mon Apr 4 16:49:18 CEST 2011
On Monday 04 April 2011, Dave Schmidt wrote:
> Hi Al and the list,
>
> > From: Al Johnson on 03/29/11 03:17 PM
> >
> > Am I right in thinking you're using the debug board to get a serial port
> > level shifted to 3.3V, and connecting that to the Calypso serial
> > interface through the headset jack?
>
> No... I do not fully understand your question, which probably means
> I'm not trying THAT :)
>
> What I understand now, is that for my purpose (running osmocon on
> the phone) serial connection is not needed, as in OpenMoko case the
> communication happens via TCP socket as explained in
> http://bb.osmocom.org/trac/wiki/OpenMoko . Thanks anyway!
The Calypso in the OpenMokos has two serial interfaces. One is connected to
the cpu and appears as /dev/ttySAC0, and the other is connected to the headset
jack socket.
According to their wiki[1][2] osmocon connects to the calypso through either
of these serial ports, and provides a socket interface. If you run osmocon on
the phone the obvious port to use is /dev/ttySAC0. If you were running osmocon
on a separate machine you would connect via the headphone jack instead, just
as you would for most of the other supported handsets[3]. The debug board
contains a USB serial interface that can be used to connect to the headset
jack socket[4], so when you mentioned the debug board I assumed you were using
this method.
[1] http://bb.osmocom.org/trac/wiki/osmocon
[2] http://bb.osmocom.org/trac/wiki/CalypsoRomloader
[3] http://bb.osmocom.org/trac/wiki/CalypsoSerialCable
[4] http://lists.openmoko.org/pipermail/hardware/2009-April/001109.html
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