That shouldn't be necessary. TimerB5 does not interfere with TimerB4.
These are the current hardware timer allocations in TinyOS 1.x for
the Telos platform:
TimerA0 is used by msp430/MSP430ADC12.nc
TimerA1 is used by msp430/MSP430ADC12.nc
TimerB1 is used by telos/HPLCC2420C.nc
TimerB3 is used by msp430/TimerC.nc
TimerB4 is used by telos/TimerJiffyAsyncC.nc
That leaves you TimerA2, TimerB0, TimerB2, TimerB5, and TimerB6 as
entirely safe timers to use -- none of them should impact radio
communication.
- Cory
On 12/9/05, Giang Nguyen <[EMAIL PROTECTED]> wrote:
>
> > i have tmotes.
> > i need to use an async timer that has tick (1/32768) resolution and it
> should fire accurately also. i think what i need is exactly what the
> CC2420RadioM uses as the BackoffTimerJiffy.
> >
> > is one available?
> >
> > i've been playing around with platform/telos/TimerJiffyAsync* but have not
> been successful.
> >
>
> i've made a copy of platform/telos/TimerJiffyAsync{C,M}.nc
> and simply changed the timer B4's to B5's.
> my copy appears to run pretty well.
>
> questions:
> 1) do the B4's and B5's interfere with each other?
> 1) any other precautions?
>
> please help. thanks.
>
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>
>
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