Re: [Contiki-developers] Tmote sky low-power modes

[Jonathan L. <jo...@cs...>]

Thanks Joakim,

I'll give those a try once I've fixed some issues I've recently managed to
introduce into our Insense-language compiler. 

I'll let you know what the outcome is re disabling the ADC.

As mentioned before, my main fun is developing a component-based language
(we call it Insense) that runs on Contiki. The language is working pretty
well, but we decided last week to re-write the heart of it (inter-component
communication channels) in order to save some space. I'm debugging the
re-write at present ... ;-)

Anyway, will let you know

Cheers again

	Jon

> -----Original Message-----
> From: Joakim Eriksson [mailto:jo...@si...] 
> Sent: 14 October 2008 18:52
> To: Contiki developer mailing list
> Subject: Re: [Contiki-developers] Tmote sky low-power modes
> 
> Hi,
> 
> Jonathan Lewis wrote:
> > Hi Bjorn,
> > 
> [...]
> > 
> >> Did you try to disable the sht11 and the light sensors?
> >>
> > 
> > I also disabled the sht11, hardly makes any difference. I will 
> > probably try turning off the light sensors as well, but somehow I 
> > doubt they can account for 1.5 mA. We have some tmote-sky boards 
> > without SHT11 or S1087/S1087-1 light sensors (for routing and 
> > processing only) and their current use is maybe 0.1mA below that of 
> > the normal tmote sky boards that do have these sensors.
> 
> Besides the sensors consuming power the ADC12 subsystem 
> itself will consume some power when generating the 2.5 volt 
> reference and sampling the sensors.
> If the light-sensors init is not called, the ADC12 system is 
> not set-up to run (maybe the battery sensor will do some setup too).
> 
> 
> Best regards,
> -- Joakim
> 
> 
> > 
> > Anyway, thanks again, if I come up with the goods I'll post my 
> > solution, in case anyone is interested.
> > 
> > Cheers
> > 
> > 	Jon
> > 
> 
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