Xiaohiu: Please see my answers below.
Janos On Wed, Dec 5, 2012 at 4:24 PM, Xiaohui Liu <xiao...@wayne.edu> wrote: > Hi Janos, > > (1) SFD capture is disabled during both transmission and reception. Does > CC2420x timestamping still work if it is enabled? > There are some weird edge cases that we want to avoid. For instance, we might receive a message after we call send() but before we actually issue the STXON strobe that puts the radio chip into send mode. I suggest that you don't change that logic unless you understand what you're doing. Otherwise you risk breaking the whole radio stack, not just timestamping. (2) What is *Tasklet* for? If it is used to make code async, then why not > just use function call directly? That is, to replace *Tasklet.schedule()* with > what is inside *Tasklet.run() {}*. > It's like tasks, but are executed in interrupt context, piggybacking on the interrupt handler routines. The define TASKLET_IS_TASK=1 replaces them with regular tasks. > (3) What is keyword *spi_atomic*? > I might just left it in there. It resolves to an empty string. (see #define spi_atomic in the beginning of the file). > I'll be truly grateful if you could have me understand these questions. > > -Xiaohui > > On Tue, Dec 4, 2012 at 2:00 PM, Janos Sallai > <sal...@isis.vanderbilt.edu>wrote: > >> transmission > > > > > -- > -Xiaohui Liu > TelosB > TinyOS 2.1.2 > www.cs.wayne.edu/xliu/ > >
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