Hi Omar, Use this library (works only for IRIS so far)
http://szte-wsn.cvs.sourceforge.net/viewvc/szte-wsn/tinyos/tos/lib/Atm128FastAdc/ and this sample application to sample the mic at 9 KHz. http://szte-wsn.cvs.sourceforge.net/viewvc/szte-wsn/tinyos/apps/MicReadStreamTest/ Miklos On Tue, Jun 29, 2010 at 2:08 PM, Omar Bouzid <o.m.bou...@newcastle.ac.uk> wrote: > Hi all, > > I would really appreciate if someone can reply and guide me with this problem. > > Is it possible to modify the soundlocalizer example explained in Tinyos > programming book, chapter 13 so that it can sample the mic sensor > continuously? > > In fact, I tried to do it by putting the "Atm128AdcSingle.getData" command > inside a for loop and each time the event "Atm128AdcSingle.dataReady" is > signalled, the data will be added to a buffer as shown in the code below. > However, it does not work as I expected. It seems to be that, although I can > see that the "Atm128AdcSingle.getData" command is executed several times > depends on the buffer size, the event "Atm128AdcSingle.dataReady" is > signalled only once (I don't know why?). > > Pleas correct me if what I did is wrong. > > void Cont_Sample() { > for(i = 0; i < BUFFER_SIZE; ++i) > call Atm128AdcSingle.getData(call MicAdcChannel.getChannel(), > ATM128_ADC_VREF_OFF, FALSE, > ATM128_ADC_PRESCALE_32); > printf("Here is a ith value: %d\n", i); > printfflush(); > } > ///////////// > > async event void Atm128AdcSingle.dataReady(uint16_t data, bool precise) { > Add_DataToBuffer(data); > } > //////////// > > void Add_DataToBuffer(uint16_t Mic_data){ > MicRead[i] = Mic_data; > if (i == BUFFER_SIZE) > { > printf("last iteration value: %x\n", i); > printfflush(); > post stopMicrophone(); > } > } > > BTW: I am using Tinyos-2.x, Micaz and mts300. > > I would be very grateful if someone can help. > > Thanks in advance, > Omar > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
