On Oct 21, 2006, at 8:55 PM, Jody M Podpora wrote:

Hi all,

I was wondering if anyone's tried to put a TelosB into "deep sleep" for a timer-defined period (uA current draw range)in TinyOS 2.x. Several years ago, I successfully implemented something similar on a Mica2 (tinyOS1.x) using an external timer and a few golden lines of code. Unfortunately, I've been unable to duplicate this type of funcationality with the TelosB and tinyos2.x.

It seems (from TEP 112) that the only way to achieve this type of functionality would be to empty the task queue in some way -- but I'm not sure how I can reliably guarantee this will happen before I start my timer.

Thanks very much,

In theory, if you turn everything off, then the Telos should enter such a deep sleep state. The approach 2.x takes is to automatically enter the lowest possible power state given which peripherals and MCU resources are active.

Phil


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