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Thu Apr 16 08:11:01 PDT 2009


ted count value should be 11. But it shows the value as 66. I checked with =
other pulse frequencies also. All the values are multiplied by 6. Also, it =
shows two different count values. For few data reporting periods, Moteview =
shows count value 66 and some times it shows 43.=20

Anyone can tell the reason?=20


A.Sivagami  Senior Research Fellow,  Department of=A0Electronics and Commun=
ication Engineering,=A0  CEG=A0campus,   Anna University,  Chennai - 600 02=
5  =A0=0A=0A=0A      Now surf faster and smarter ! Check out the new Firefo=
x 3 - Yahoo! Edition http://downloads.yahoo.com/in/firefox/
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Content-Transfer-Encoding: quoted-printable

<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"=
top" style=3D"font: inherit;">I am using Crossbow's IRIS motes. Using Motew=
orks, I would like to count the number of pulses in a given duration using =
MDA 300 Data Acquisition Board. I have modified XMDA300M.nc file to read th=
e count value for the default time<br>&nbsp; &nbsp; &nbsp;&nbsp; #define MI=
SC_SAMPLING_TIME&nbsp;&nbsp;&nbsp;&nbsp; 110&nbsp; (110ms)<br><br>From the =
pulse generator , I have set the frequency as 100Hz, and the expected count=
 value should be 11. But it shows the value as 66. I checked with other pul=
se frequencies also. All the values are multiplied by 6. Also, it shows two=
 different count values. For few data reporting periods, Moteview shows cou=
nt value 66 and some times it shows 43. <br><br>Anyone can tell the reason?=
 <br><br><br><div id=3D"RTEContent"><div><div><div><strong><font color=3D"#=
ff4040" face=3D"comic sans ms"><em>A.Sivagami</em></font></strong></div>=20
 <div><strong><font color=3D"#8000ff" face=3D"times new roman">Senior Resea=
rch Fellow,</font></strong></div>  <div><strong><font color=3D"#8000ff" fac=
e=3D"times new roman">Department of&nbsp;Electronics and Communication Engi=
neering,&nbsp;</font></strong></div>  <div><strong><font color=3D"#8000ff" =
face=3D"Times New Roman">CEG&nbsp;campus, </font></strong></div>  <div><str=
ong><font color=3D"#8000ff" face=3D"times new roman">Anna University,</font=
></strong></div>  <div><strong><font color=3D"#8000ff" face=3D"times new ro=
man">Chennai - 600 025</font></strong></div>  <div><strong><font color=3D"#=
ff4040"></font></strong>&nbsp;</div></div></div></div></td></tr></table><br=
>=0A=0A=0A      <!--3--><hr size=3D1></hr> Now surf faster and smarter ! Ch=
eck out the new Firefox 3 - Yahoo! Edition * <a href=3D"http://in.rd.yahoo.=
com/tagline_firefox_1/*http://downloads.yahoo.com/in/firefox/"> Click here!=
</a>
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