I did the excavate thing a while ago and satisfied myself that
the mica2 uses the moral equivalent of the Battery as the Vref.
Since I couldn't find the micaz schematic I just assume that it's
the same. I don't know why the 'Z uses the internal ref and the '2
has an external one. Maybe it's that settling time you mentioned.
I was thinking I would find the full 'Z schematic as a separate
document. But in the User Manual?...strange...Unfortunately it
is not complete, it's missing the controller page. I guess it's
the same as the '2...I hope. From a quick look the Vref section
seems the same.
As for the include path, I meant the implicit path. For instance
nothing explicitly references hardware.h (in most apps anyway),
but it automagically appears in the (pre-)compiled code, and,
various source directories are searched in some (unspecified to me)
order when compiling. I mentioned it because there was just a
statement made about micaz using mica2/HPLUARTC.nc, which might
confuse anyone below the level of prelate in the TOS hierarchy...
oh, and my (hopefully vanilla and regular-guy kinda) TOS 1.1.7
install doesn't find a man page for ncc...is it really part of
the standard install, and I didn't set my MANPATH right?
MS
David Gay wrote:
On 5/19/06, Michael Schippling <[EMAIL PROTECTED]> wrote:
I assume it's the same trick as the mica2 where the ADC Vref IS the
battery, and you get an inverted reading from the internal ref which
increases as the battery voltage droops.
Well I was thinking that too, but I didn't want to spend lots of time
digging through the code to confirm it... (the 1.x code doesn't very
explicitly select which reference voltage to use)
Is there a micaz schematic on the XBOW site? I keep looking for one at
http://www.tinyos.net/scoop/special/hardware
and then give up...
http://www.xbow.com/Support/Support_pdf_files/MPR-MIB_Series_Users_Manual.pdf
(it is on xbow's micaz web page...)
Also, I just referenced your name in vain on having sent me a link to
something that details the nesc include path, which I have lost as usual.
Can you resend that (assuming it was you...)
I don't think it was. But "man ncc" does tell you (at least with the
latest toolchain), and compiling with -v will show you all the -I
directives...
David Gay
_______________________________________________
Tinyos-help mailing list
Tinyos-help@Millennium.Berkeley.EDU
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
