Hi Rahav, 1) Yes, this is probably the best app to start from, unless you also need the real-world-time feature of HostTimeLogging: http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x-contrib/shimmer/apps/HostTimeLogging/README
2/3) These questions are related. 3 channels x 2 bytes each x 170 sample periods = 1020 bytes Mike On Tue, Jul 3, 2012 at 1:12 PM, Rahav Dor (yahoo) <[email protected]> wrote: > Hello everyone, my first post (and first project). > > I would like to change JustFATLogging so it can log more than just the > accelerometers. I would like to keep the new app flexible, so the next > person around will be able to decide if she/he wants to add Gyro reading, > and/or other sensors. This requires that some constants (record length, > etc.) will become constants, preferable in the .h file. I would like it > continue and to not use the radio because the uSD card has lower energy > needs. As I was reading the code I ran into some constants which I do not > understand. > > Here are my questions: > 1) I am trying to add to JustFATLogging. Is there a better app to start > from, or code fragments that I can use from other app and plug it into the > right places in JustFATLoggging? > > 2) The sbuf variables have a size of 512 and they are of type uint16, but > the call to fwrite writes only 1020 Bytes. Why not 512*2B=1024 Bytes? > > 3) I assume that DMA0.transferDone function is triggered when a DMA > transfer is complete, correct? > In that function, what is the constant of 170 used for? > > PS: As I was reading JustFATLogging I added a lot more comments. If anyone > is interested I can post the code. > > Thanks, > Rahav > > _______________________________________________ > Shimmer-users mailing list > [email protected] > https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users > >
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