[Tinyos-help] MSP430 ADC first reading

[Dimas Abreu Dutra]

I am actually *SURE* that the value was stable since I measured it on the
oscilloscope and saw no artifacts. Also, the accelerometer's power comes
from an I2C chip which is not affected by the microcontroller reset, and I
turned it on before reseting the mote. It is hard trying with another
voltage source since the circuit is smd, but if you think it is necessary I
can try it with the tmote mini.

~Dimas~

On Mon, Jun 23, 2008 at 8:28 PM, Michael Schippling <schip at santafe.edu>
wrote:

> Now, is it possible that the accelerometer is "warming up".
> Previously you said that you were _sure_ the the value was
> stable when the first measurement was made. Can you try it
> with a truly fixed voltage on the A0,1 input? The fact that
> the InternalVoltage is OK would indicate that initial S/H
> time might not be the culprit...
>
> MS
>
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