XBee Pro Custom App =>very low power????

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pkuban
 
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Joined: Sun Aug 16, 2009 5:15 pm

XBee Pro Custom App =>very low power????

Post by pkuban »

I have developed a custom app which runs on an XBee 802.15.4
chip (this contains a Freescale MC13213). Everything works
wonderfully on the non-pro chip. However, when I use the
Pro chip (MC13123, plus LNA, PA, digital pot) , I get very low
power output. I have performed all of the documented code
changes, but it still appears as if: 1) the digital pot is not being
programmed or 2) the PA is not being turned on. This is a
hard to debug issue, since all of the code that programs the
POT is compiled into the PHY library, so my only debug option
is to look at assembly code. For those of you unfamiliar with
this chip, it is a CPU and RF modem in one, so you don't need
an external processor as is the case with most of the earlier
XBee stuff. Anyway, if anybody out there can help out, I would
appreciate it. A good clue would be the part number of the
PA IC.

Thanks,

Paul K

pkuban
 
Posts: 2
Joined: Sun Aug 16, 2009 5:15 pm

Re: XBee Pro Custom App =>very low power????

Post by pkuban »

Update... I have determined that the DOZE function in the 802.15.4 library code
is causing the low power issue.

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