Hi Rafael,
I had the same challenge and the same infrastructure (Mica2-Rx/Mica2Dot-Tx and
the MIB520, with the exception from the sensorboard - I got one ADXL330 acc).
App freq? 100hz, that means Nyquist freq 200hz (sampling+transmission times).
I worked with the Telosb one in the past, but with this XBow ones never. I've
downloaded the MoteWorks installation files and I am currently using single-hop
app (if that's the case for you as well) called TestSensor for tx (Mica2Dot)
and TOSBase (Mica2) for rx. You'll find'em in the installation files.
If you want to increase the tx frequency (or better definition: throughput
(pckts/s)): have to go deep into the radio stack files => CC1000RadioM and
CC1000ControlM. The first one carries out the implementation for tx (since
preamble, sync bytes, payload, crc transmission and ack) and tx (either for
TOSBase or TestSensor). Get rid of ack packets and RSSI measurements for
collision avoidance (you have to go through this code) and packets will be sent
pretty much faster.
I don't know how much time do you have for this, but it's necessary to increase
the throughput and also for your understanding as well.
Cheers,
Edgar Charry
Date: Fri, 9 May 2008 12:33:34 +0100From: [EMAIL PROTECTED]: [EMAIL PROTECTED]:
[Tinyos-help] Sampling Rate and Accelerometer calibration for MTS400
Dear All,
I have a Crossbow professional kit(mica2 platform with the mib520 board and
MTS400 sensors). In this stage of my research actvity I am trying to vary the
sampling rate of the board (I need sampling rates of 100Hz or so on for the
accelerometers). Could anybody help me in finding the right apps for my
sensors? .
I am also trying to calibrate the accelerometers in order to obtain reasonable
lectures and I don't know if there a specific apps to do this.
Thank you very much for your answer and sorry for asking maybe so simple
questions but because of my background (I am civil engineer) it is very
difficult to me to get involved in the nesC language and also in the whole
electronic concepts that this means.
Rafael Aguilar
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