Hi michael You wrote to correctly set the MOTECOM environment, would you please explain me how to set them in XP without Cygwin.
//////////////////////////////////////////////////////////////////////////////////////////////////////// Please send messages to the help list... If Listen works on receive, you should be able to send using the same MOTECOM setting, e.g., mine is: ser...@com5:mica2 You do need to specify the platform name rather than a baud-rate because the TOS I/O code changes some formatting based on the type. Debugging into the null-pointer should be instructive. MS ashkan ekhtiari wrote: Well, I tried Listen on windows it works and I get result line by line, I didn't see any RawListen in tools folder. anyway I also noticed that the problem might be becase on Linux we use serial@/dev/USB0:57600 for example to connect however I do it on Xp by just COMn as its port name to connect. I will try debugger to see what happens on makePacketSource() function. Yes you are right and I think also that if I get data from my application and Listen application so it supposed to be a correct connection and it should work. for output stream also I get that and it's name is retrieved: Native lib Version = RXTX-2.1-7 Java lib Version = RXTX-2.1-7 Is about to open a port Now Instantiating serial port ////////////////////////////// Serial Port params: 57600 , parity : 0 stop bits : 1 databits : 8 output serial port is : gnu.io.rxtxport$serialoutputstr...@c20e24 < mailto:gnu.io.rxtxport$serialoutputstr...@c20e24<gnu.io.rxtxport$serialoutputstr...@c20e24> > input serial port is : gnu.io.rxtxport$serialinputstr...@2e7263 < mailto:gnu.io.rxtxport$serialinputstr...@2e7263<gnu.io.rxtxport$serialinputstr...@2e7263> > @@@@@@@@@@@@@@@@@@@@@@@@@ serial port name : //./COM7 \\\\\\\\\\\\\\\\\\\ Encountered Exception : java.lang.NullPointerException H = 12 min = 29 sec= 58 /////////////// Exception on writing to mote : java.lang.NullPointerException java.lang.NullPointerException this is the output that my application prints out and the output stream has been named as above sign of being a proper valid stream. I am actualy confused why it shouldn't work. Regards, Ashkan -- Best Regards Ashkan Ekhtiari
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