[Tinyos-devel] more bugging about current consumption on Mica Z in tinyos-2.x

[Philip Levis]

On Aug 1, 2007, at 10:40 AM, Murray, Ben wrote:

>>> With the BOD disabled I get the same results as originally posted
>>> (hundreds
>>> of uA at 3.0V, hundreds or tens of uA in the 2.5-2.8V
>> region, <10uA
>>> at about
>>> 2.3-2.4V, and hundreds again at 2.1-2.2V) With BOD fully enabled
>>> (wr_fuse_l=24) the current stuck at around 8-9mA (note: mA,
>> not uA)
>>> and with
>>> it part-enabled (wr_fuse_l=A4) the same pattern as the
>> original was
>>> observed
>>> between 2.7-3.0V but at anything less than 2.7V the current jumps
>>> up to the
>>> several-mA region.
>>>
>>
>> I ran tests on some micaZs here and didn't see the same
>> behavior. The
>> current jumped to the mA region at about 2.2V, but before that point
>> was 2-6uA.
>>
>> Other folks in core who have micazs are going to test them.
>>
>> Phil
>>
>
> Thanks for trying...I thought it'd just be me!
>
> ...but I have no idea why. Dodgy motes aside, are there any other  
> settings
> aside from the fuses that might be interfering with mcusleep.sleep?  
> Perhaps
> something setting an interrupt that shouldn't be, or something I  
> have failed
> to initialise?
>
> Standard T2 install, unmodified makefiles, unmodified .nc files.
>
> can I ask what your default fuse settings are for fuse_h fuse_l and  
> fuse_e?
>

It could be my setup that's wrong; let's wait on what others see.

I also used a 2.0.2 install, unmodified Makefiles, etc.

Phil