Introducing the Freerunner Navigation Board
infibit at gmail.com
Wed Jul 21 18:59:34 CEST 2010
On Wed, Jul 21, 2010 at 10:23 PM, Christoph Mair <ml at chonyota.net> wrote:
> Am Mittwoch 21 Juli 2010, 11:22:20 schrieb Dr. H. Nikolaus Schaller:
> > Am 21.07.2010 um 10:55 schrieb Helge Hafting:
> > > On 03. mai 2010 11:10, Jeffrey Ratcliffe wrote:
> > >> On 3 May 2010 11:04, Dr. H. Nikolaus Schaller<hns at goldelico.com>
> > >>>> Having navigation work inside tunnels
> > >>>> would allow mapping them accurately for openstreetmap. And also have
> > >>>> underground navigation - some tunnels have got
> > >>>> intersections/roundabouts inside, with several possible exits.
> > >>
> > >> Would navit, tangogps, etc. need a new interface to access the
> > >> sensors, or could the existing libraries be adapted to "correct" the
> > >> GPS data with additional information from the extra sensors before
> > >> handing it on to the GUI?
> > >
> > > The natural place for such software seems to be in gpsd itself - it
> > > already supports having several gps (position) devices. (Or possibly in
> > > a front-end to gpsd - depends on what the gpsd developer wants.) But
> > > many processes / software layers is not good - it causes delays.
> > Well, for 1 position per second delays it may be neglectable, but you are
> > right - having everything in one "middle-man" daemon (gpsd) appears to be
> > the best architecture for me. So it hides the complexity from the
> > user-applications, and should be easily expandable.
> > As far as I know, the kernel driver for the BMP085 barometric altimeter
> > already in some upstream kernel release candidate. So altitude
> > can be mixed between GPS and altimeter as well.
> Well, not in a release candidate. The patch waits in Andrew Morton's MM
> to be sent upstream. This will probably happen after 2.6.35 has been
> In the meantime I will send patches against the SHR kernel to the shr-devel
> mailing list. Hopefully they will be included by default when the
> board v2 becomes available.
> I started to document the features of the new board:
> This might be the right place to collect ideas or suggestions on how to use
> the new possibilities.
> Openmoko community mailing list
> community at lists.openmoko.org
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