*****SPAM***** [Tinyos-help] problem about CC2420 buffer

[Philip Levis]

On May 21, 2007, at 5:54 PM, siya1983 at 126.com wrote:

> Hello,I'm a student in China,I come across a problem when I'm  
> testing the network buffer using TinyOS2.0. I use the BlinkToRadio  
> testcase, and modify the code to make one node to send and the  
> other just to receive .The sending frequency is 20HZ.When I add a  
> periodic(4HZ) busywait task to the receiving node,It seems that  
> when this task run more than 100ms, there is packet lost in the  
> receiving node.But why? The cc2420 can buffer the packets received  
> during the busywait task running.I thought there should not be  
> packet lost at this sending frequency. Please help me figure it  
> out.Thanks a lot.
>

The CC2420 has limited buffering space. The buffer is overflowing.

Phil