I've now checked in the README file in the LowPowerSensing application directory. Not sure why it got lost, but I generated a new one from scratch this afternoon. let me know if you find anything confusing or if you think there is anythign missing that would help in the clarity of reading it or using the application.
Kevin On Sun, Feb 24, 2008 at 1:56 PM, ian cooper <[EMAIL PROTECTED]> wrote: > Kevin > > I've made good progress. Of course you have to change the sensor directory > in > the java Makefile as well in order to see the results! It all seems to be > working with a sampling frequency of 5 minutes (much more convenient for > debugging than 1 hour). > > I had trouble with your line: > > PFLAGS += -DSAMPLING_INTERVAL=(60*1024*60) > > and in the end I just edited the value in LowPowerSensingConstants.h > > > Regards > > Ian > > > > On Sunday 24 February 2008 18:19, you wrote: > > > > Hi Ian. > > > > You're right about the README file, its not there and I can't seem to > > find it anywhere :) I know I created it at the time I checked the app > > in, but somehow it must have gotten lost in the shuffle somehow. I > > 'll see about writing a new one when I get some time soon. For now > > though, what sort of questions do you have exactly that I could answer > > now? See below for answers to the rest fo your comments.... > > > > > I also noticed that the Sampler part wouldn't compile - I fixed this by > > > changing > > > > > > SampleSend.getPayload(&sample_msg, sizeof(nx_sample)); > > > > > > to: > > > > > > SampleSend.getPayload(&sample_msg); > > > > I think the problem here is that the app exists in cvs where a newer > > version of the Packet interface has been defined for the upcoming 2.1 > > release. The application therefore uses the newer version of the > > interface instead of the one used in the tinyos-2.0.2 release. (I > > assume this is the version you are using, no?). Your fix is > > completely valid for this release. > > > > > Anyway I got the basestation & sampler compiled and loaded onto tmote > > > skys, started a serialforwarder and ran the java application. Values > > > were returned although I'm a bit confused about the sample.sin_value that > > > is returned. > > > > So the sample.sin_value is the result of using a general purpose > > sensor so that the application will compile on a cross-platform basis. > > The sensor is in fact a "software sensor" that simply runs through > > and generates values consistent with a sign wave. > > > > > What I want to do is return all four sensor readings and set the sample > > > rate to be approx once every hour (not 3000 milliseconds as in your > > > demo). > > > > To do this you need to change just two flags sent in to the makefile > > when compiling the Sampler app. So if you open up the makefile > > LowPowerSensing/Sampler/Makefile, and change the line: > > > > CFLAGS += -I.. -I../sampleLog -I../universal_sensors > > > > to > > > > CFLAGS += -I.. -I../sampleLog -I../tmote_onboard_sensors > > > > and then add this line directly after that: > > > > PFLAGS += -DSAMPLING_INTERVAL=(60*1024*60) > > > > This should do exactly what you want. (By the way, this is the sort > > of stuff that was originally in that readme that somehow seems to have > > never made it into cvs.....) > > > > Let me know how it goes. > > > > Oh, and I'm forwarding this to tinyos-help so that others can benefit > > from your question. > -- ~Kevin _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
