Hi all,

I am working 
            on CC2430 mote with cc2420 as soc and 8051 as microcontroller.  I 
have two doubts

1. In tinyos-2.x-contrib/diku/mcs51/tos/chips/ there are two implementations, 
one is "tinyos-2.x-contrib/diku/mcs51/tos/chips/cc2430/radio" and other is 
"tinyos-2.x-contrib/diku/mcs51/tos/chips/cc2430/cc2420". 

I used TTXDemo application where it is using first implemenation drivers ( i.e 
tinyos-2.x-contrib/diku/mcs51/tos/chips/cc2430/radio ).  Here the problem is, 
when I start running motes, for the first few minutes motes are able to send 
packets and later on the each mote is stopped sending the data. And the 
application uses SimpleMac.send() command. 

2. Then later I used second implemenation drivers (i.e 
tinyos-2.x-contrib/diku/mcs51/tos/chips/cc2430/cc2420 ).In this the radio 
itself  is not enabling i.e the variable "state = S_XOSC_STARTED" is not 
setting and so radio is not enabling. 

What could be the problem for the first doubt, is there a SimpleMac issue. And 
is Simple Mac uses CSMA-CA? . If not how to use it?. 
And how to resolve the second problem.

Thanks & Regards,
I.Trilok

                                          
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