[Tinyos-help] about CC2420

[David Moss]

The default mode for the radio is Rx mode - after it transmits a packet, it
automatically switches back to Rx on the hardware.

 

If you attempt to transmit using STXON without clear channel assessments,
then your radio will not only *not* receive the other transmitter's packet,
but it will cause channel interference that will prevent all other motes in
the area from receiving that packet.  That's the point of backoffs and CCA
(clear channel assessment) - determine if the channel is clear before
attempting a transmission.  



-David

 

 

 

  _____  

From: tinyos-help-bounces at Millennium.Berkeley.EDU
[mailto:tinyos-help-bounces at Millennium.Berkeley.EDU] On Behalf Of roberto
pagliari
Sent: Tuesday, June 19, 2007 3:24 PM
To: tinyos-help at Millennium.Berkeley.EDU
Subject: [Tinyos-help] about CC2420

 

hi all,
within RadioControlM I can see CC2420Control.RxMode(), but, after a packet
has been sent I cant find any call to CC2420.RxMode() or SXON oscillator.
where is it done? 

the second question is: once the transmitter oscillator STXON has been
enabled, if an incoming message arrives, will it be lost? 


thank you

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