Hi Hafid, You should use the tinyos-main repository from google code, that has MDA300 drivers that you might find useful. Regarding your first question: we have a code here
http://szte-wsn.svn.sourceforge.net/viewvc/szte-wsn/tinyos-2.x/trunk/apps/test/mts300/MicReadStreamTest/ that samples the MIC at 17 khz and transmits it over the radio to the basestation. It uses this framework http://szte-wsn.svn.sourceforge.net/viewvc/szte-wsn/tinyos-2.x/trunk/tos/lib/Atm128FastAdc/ I do not know the answer to your second question though. Best, Miklos On Thu, Jul 21, 2011 at 10:31 AM, hafid oussaadi <[email protected]> wrote: > Dear all, > I want to implement the ultrasonic pulse echo technique on MDA300 + IRIS > platform. So I have to attach an ultrasonic transmitter to the sensorboard's > GND and 2.5V excitation pins and another ultrasonic receiver to ADC_1 > channel and GND pins. I am using Tinyos 2.1 and MDA300 drivers downloaded > from > http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x-contrib/uoit/mda300ca/. > Thus, I have a couple of questions: > > Has anyone succeeded in getting a sampling frequency 2-3 KHz in free running > mode (ie: radio chip switched-off) using MDA300? > How to put high and down the 2.5 v excitation pin? this post > http://www.mail-archive.com/[email protected]/msg24083.html describe > it for the 3.3 v excitation pin > > I appreciate your help in advance, > Regards, > HAFID > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
