Hi Brian, I like this idea, I just added gpsd to my Qtopia build, and added some simple code to my Qtopia based sunset calculator I wrote eons ago for my Zaurus, the GPS part simply gets current lat and long to calculate sunset/sunrise at your current location. Previously I had a city selector for that.
I also wanted a pedometer, and I like the idea of a data logger, because I can post process the data with numerous things. I was kind of surprised that gpsd didn't give me a simple way to just get the current location, I had to capture 5 sentences to do that simple thing, but what I really wanted was to simply get the last known lat and long I was at. With the data logger I can presumably do that by getting the last entry of the log. I think the first thing to answer is the log format, any progress on defining that? I'll work on code to extract the log info for a simple pedometer, also if you can define the log format I may be able to write an initial logger. I think the logger needs to be platform independent as I will be writing all my code for Qtopia, but obviously we have 3 of 4 platforms to deal with, and only the graphical part will be different. (GTK/X vs QT/FB). I also write in Ruby whenever possible, so we probably need a library that can read the log format from c/c++/python/ruby etc. (XML would be able to do that but I agree probably too verbose, how about tokenized XML?) BTW my pedometer should be able to tell me the average , max & min speed I walked, and the total time and distance pretty simple stuff. Brian Wilson wrote: > One of the main reasons I got my Freerunner was to play with its GPS > features. I want to be able to use it as a replacement for > closed-source applications like TDS Solo Field and ESRI ArcPad. > Especially I want something that would facilitate my volunteer > "citizen scientist" work > > At the rate I am going I will probably never have more than 15 minutes > a day to work towards this. > In spite of this I decided to spell out what I have been thinking > about in a wiki page because it would take too much space here and I > think the interest might not be high enough to clutter up this very > busy list with yet another very involved topic. > > I have a GPS in my pocket most of the time. I use a Garmin on my > bicycles and on hikes. I have used various TDS and Trimble and ESRI > products. Being a software developer I want something that I can tweak > and tune and none of these commercial products even comes close to > what I have in mind. > > Therefore I started this page: > http://wiki.openmoko.org/wiki/GPS_Data_Logger to talk about it > and the intro there says this: > -- > This page was created to address the use cases mentioned in GTA02 GPS, > including > > * I want to log GPS data for later analysis. > * I want to collect GPS data for scientific field work (forestry, > biology, etc) > > The page was started on 17 August 2008 mostly as a thought exercise. > Please jump in and add to it. > > Cheers, > > Brian Wilson > Corvallis Oregon > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > -- Jim Morris, http://blog.wolfman.com _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community