[Tinyos-help] Java listen prob

[swathyme07 at yahoo.co.in]

hello people.. 
when i run the RadiocountToLeds program and listen it using the command java net.tinyos.tools.Listen, i am facing this problem can anyone help me out!!!

root at wsn3:/opt/tinyos-2.1.0/apps/RadioCountToLeds# java net.tinyos.tools.Listen
Error on serial@/dev/ttyUSB1:57600: java.io.IOException: Could not open /dev/ttyUSB1: TOSComm JNI library runtime error: get_modem_status: No such device


thanku



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