[Tinyos-devel] lost packets from PC to the mote

[Razvan Musaloiu-E.]

Hi!

I just noticed that when a mote sends a lot of packets to a the PC, the 
packets from the PC to the mote doesn't go reach the user application 
layer some of the time. In the attached archive there is a test program 
that is exposing this. The mote program is sending packets back-to-back 
while the PC program (in Java) is receiving the packets and sends to the 
mote one packets each second. I run the program on telosb in the following 
way:

(console 1)$ ./sf 9001 /dev/ttyUSB0 115200
(console 2)$ java StressSerialTest -comm sf at localhost:9001

The mote is toggling the blue led each time it receives a packet and it 
should change state each time the RX led from the USB blinks. This doesn't 
always happen: the RX led indicates a receive but the blue doesn't always 
change its state. The (console 1) also shows lines like this:
 	Note: write failed
 	Note: write failed
 	Note: write failed
 	Note: write failed

Did anyone else notice this behavior?

--
Razvan ME
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