[Tinyos-help] Low power operation IRIS

[Charles Elliott]

Any help for the following question:


"I have a question about the minimum power consumption in Iris module and
telosb module when both of them are in sleep state and all of their external
devices are inactive. According to my measurement, the current consumed is
only 7uA by telosb, but is 5mA by Iirs, which is quite high and is
contradict with the specification given by Crossbow.



I did experiments on these two kinds of motes using the program
TestSchedulerC. It is a program under the tinyos2-x/apps/tests directory. In
the program, after the mote is booted, it posts three tasks to toggle the
three led in the mote. According to the component wiring relationship, when
the task queue is empty, the scheduler will finally invoke mcuSleepC module
to get the microcontroller into low power state. I installed the program on
both Iris and telosb, and used a multi-meter to measure the electricity
current.



Can anyone give me some suggestions? Any help will be greatly appreciated!


Jinfu Zheng"

We are using the current tinyos source tree from the CVS

Thanks
Charles
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