On Jan 29, 2007, at 2:09 PM, Mirko Bordignon wrote:
Hi there,
briefly speaking: I successfully ported TinyOS-2.x to a generic
AtMega128 dev board (mainly recycling and adjusting mica-family
code), on which I can successfully run all the test applications,
from Blink to TestSerial etc etc (believe me that there are no
problems in that sense, everything is there up and running).
What is strange, and I wonder if anybody does have any hint, is
that I cannot properly use PORTC as an output port: nor using it
with the GeneralIO interface and related components, neither
manually setting DDRC and PORTC I can get high logic values on any
of its pins, while both these two methods -let's say the elegant,
proper way and the debug one- work flawlessy on the other ports.
What is even more strange is that, inspecting DDRC and PORTC values
via debugging, they pretend to be set respectively to output mode
and to high while a multimeter easily reveals they're not (or at
least that the output value is low); I double checked the hardware,
in fact just compiling and uploading a 5 lines C code which just
sets high ouput values on port C (tinkering with the usual DDRC and
PORTC) gets the job done, so it is totally a tinyos related
trouble. Any idea?
No idea. Have you compared the generated assembly? TinyOS has to make
its own versions of a bunch of declarations, it's possible there's a
bug somewhere...
Regardless, if you figure out the problem, I'd be happy to check in
the fix.
Phil
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