I wonder if you have a timing race condition in your init code?
Just an idea, probably nothing useful...
MS
Nick Soldner wrote:
I posted earlier on this however now I have a bit more intuition as to
the nature of my problem. I have an application which writes data to the
micaz's 512KB flash EEPROM through the logger component. My code first
resets the write pointer whenever the mote is power cycled using
LoggerWrite.resetPointer(), I then issue the LoggerWrite.append(ptr)
command in six second intervals to write data to the EEPROM. I have an
led setup to toggle whenever the LoggerWrite.writedone event fires which
indicates a successful write operation.
After installing this program on multiple motes I find that some motes
successfully write to the EEPROM while others return FAIL. Given that
I'm installing the exact same program on many identical micaz motes I
would expect all motes to act the same; not the case it seems. On the
motes that do successfully write to the EEPROM I have verified that the
write pointer is indeed reset and that the data written is correct.
I have an intuition that the motes which don't successfully write to the
EEPROM have write pointers that point to protected space although the
shouldn't after resetPointer() is called. In theory since I always
execute LoggerWrite.resetPointer() once before I start to write data
there should be no issue trying to write in protected space.
Additionally the pointers are stored in the program code (LoggerM) so
each time I upload the code to a mote they should all have the same
pointers.
The ONLY thing I see that is different is the date codes of my micaz
motes, the ones with date codes of 11-20-06 work fine and the ones with
date codes of 03-13-07 don't work. Is there a way to change the newer
motes to mimic the old ones?
Any advice on how to troubleshoot this?
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--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
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