[Tinyos-help] 2kHz on MDA300

[Balvis Alessandro (EXT DP TOS)]

Hy,

I would know if someone can me help for implement a function to sample
with MDA300 and MicaZ at 2kHz on the analog channel (or the
differential). I asked to Crossbow, but they answered me that the
hardware is capable to work at that rate, but they haven't developped
the driver.

I tried to see the entire components in the MDA300 driver directory, but
I'm not very able to modify some of it. Crossbow said me too, that I
need to modify only the Sample driver. I checked only that the max
sampling rate is 10Hz passing the "interval argument" to the getSample
command.
I searched some pre-definied value (for example something like a
pre-scaler) to modify the clock rate of the ADC, but without results.

Any kind of advice will be appreciated.
Thanks.

Ing. Alessandro Balvis



PS: I post the Crossbow answer
"Most of our XMesh based apps are geared towards low power, low data
rate. We don't have anything that is tested for data rates >3 Hz. You
can certainly try to modify the XSensorMDA300 app and see if you can get
it to work at 10Hz rate. The MDA300 hardware is capable of sampling up
to 2 kHz"

-------------------------------------------
Centro Ricerche ENEL - Pisa 
alessandro.balvis at enel.it
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