weiye at ISI.EDU
Tue Jan 11 12:01:54 PST 2005
If I remember correctly, the issue of occasional radio hanging was
solved by locking on radio state changes. The PhyReset just acts as a
secondary protection. It's a useful feature, but it needs to take care
of the dynamic parameter settings in the long run.
On Tue, 2005-01-11 at 10:17 -0800, Omprakash Gnawali wrote:
> Does this impact the Mica2 implementation ? I remember that we put
> periodic resets because the radio was hanging occassionally. Are we
> talking about the same reset ?
> you wrote:
> > This is a good observation, and thanks for reporting the issue. I think
> > you can comment out all the PhyReset calls, since you're not using Mica
> > motes or the old programming boards. We'll think about a better way for
> > this workaround.
> > -Wei
> > On Tue, 2005-01-11 at 17:35 +0100, Christian Flügel wrote:
> > >
> > > Hi!
> > >
> > > for a test suite I wanted to be able to change transmission power on
> > > the fly so I wired the CC1000Control.SetRFPower into the s-mac
> > > Interface.
> > > It seemed to have no effect whatsoever since even after setting the
> > > output power to -20 dBm the mote was still sending with +5dBm. So I
> > > looked into the problem and found that s-mac keeps resetting the
> > > physical layer (It is resetting it once shortly after startup and may
> > > reset the phy even during operation at some times) this means losing
> > > any custom configurations since they are overwritten by the defaults.
> > > According to the comments this was done to work around some problem
> > > with regard to the mica motes and the old programming board.
> > >
> > > I have an mib510 serial board so is this hack necessary? Is there any
> > > other way to achieve such an workaround?
> > >
> > > Christian
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