Re: [Tinyos-help] Group ID collision avoidance

2009-05-16 Thread Michael Schippling
The general idea is that the radio layers ignore messages tagged with a gourpID that doesn't match the one with which the code was compiled. The radio bandwidth is still used as only one mote, of any group on that channel, can transmit at a time. Another way to avoid overlap is to assign different

[Tinyos-help] Group ID collision avoidance

2009-05-16 Thread Maisa Ben Jamaa
Hi. I saw in some WSN courses that selecting an Active Message GroupID leads to avoid packet collisions. How could this be done? I didn't much realize the influence of a GroupID packet field on a collision avoidance mechanism. Thanks for any help. Regards, m_benj ___

[Tinyos-help] Regarding Telosb radio CC2420

2009-05-16 Thread Nagarjuna
Hello, Is there a way to put CC2420 into low power radio listening state . This can be done for CC1000 using CC1000RadioIntM.setListeningMode(i) . Is there something analogous to this one that works with telosb. Thanks, Krishna. ___ Tinyos-hel

Re: [Tinyos-help] Urgent: S-Mac implementation on TinyOS 2.x

2009-05-16 Thread Omprakash Gnawali
2009/5/15 Fahad Al-Jabarti : > Hi all,, > I'm working on a project where i implement S-MAC protocol on sensor nodes.. > I already got the source code.. the problems are : > > 1) I'm working on tinyOS 2.x where the website says that the code is for > tinyOS 1.x . > 2) My platform is (Micaz) where th

[Tinyos-help] Low power listening in TinyOs-1.x and Telosb

2009-05-16 Thread Nagarjuna
Hello, I am currently working on a project in which i need to put the mote in low power consumption state, when it receives a message from base station, it should reply back and then go to power saving mode. I tried using HPLPowermanagement. But found out that it cannot be used. I figured o