[Tinyos-help] CCA value

[Aleksandr N. Sadkov]

Unfortunately, I don't know exactly, there is no information about range in
Datasheet.

It's 8 bit value, and I guess it's same range as RSSI value.

 

Regards, Aleksandr.

 

 

wbr, Sadkov Aleksandr

axel at wl.unn.ru

www.sumkino.com

www.wl.unn.ru

  _____  

From: JeongKwanhee [mailto:khjeong at gist.ac.kr] 
Sent: Tuesday, July 03, 2007 1:38 PM
To: 'Aleksandr N. Sadkov'
Cc: tinyos-help at Millennium.Berkeley.EDU
Subject: RE: [Tinyos-help] CCA value

 

Hello

 

I forgot it. 

I have one more question.

What is range of CCA?

I don't know the smallest reset value for CCA.

 

 

From: Aleksandr N. Sadkov [mailto:axel at wl.unn.ru] 
Sent: Tuesday, July 03, 2007 6:18 PM
To: 'JeongKwanhee'
Cc: tinyos-help at Millennium.Berkeley.EDU
Subject: RE: [Tinyos-help] CCA value

 

Hello,

 

You forgot about -45 offset (is the same as for RSSI).

The reset value for CCA is about -77 dBm.

 

Regards, Aleksandr.

 

 

 

wbr, Sadkov Aleksandr

axel at wl.unn.ru

www.sumkino.com

www.wl.unn.ru

  _____  

From: tinyos-help-bounces at millennium.berkeley.edu
[mailto:tinyos-help-bounces at millennium.berkeley.edu] On Behalf Of
JeongKwanhee
Sent: Tuesday, July 03, 2007 10:15 AM
To: 'roberto pagliari'
Cc: tinyos-help at millennium.berkeley.edu
Subject: RE: [Tinyos-help] CCA value

 

Hello! 

I'm using the micaz to Tinyos 1.1.15 version.

In cc2420data sheet, the default value of CCA_THR is -35.

 

 

From: roberto pagliari [mailto:bobtinyos07 at gmail.com] 
Sent: Monday, July 02, 2007 11:56 PM
To: JeongKwanhee
Cc: tinyos-help at millennium.berkeley.edu
Subject: Re: [Tinyos-help] CCA value

 

which kind of platform and distribution are u using? In tinyos 1.0.7 the
default value for micaz platform is -128. You should change it going to
HPLCC2420Control.init()

On 7/1/07, JeongKwanhee <khjeong at gist.ac.kr> wrote:

Hello all!

 

I knew CCA default value is -32. 

And I found CCA_MODE that decided whether data received or not.

So, if I want to decide CCA Threshold, what I have to do?

I think that I just change default value(E0). Is right???

 

Plz, give me send many email whether it is right or not.

Thank you.


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