Sometimes it turns out the host application tries to send data to the basestation node (via the tinyos.jar or the SF) but the basestation itself has troubles in getting them. When that happen i notice the 'UART write led' on the side of the usb connector keeps blinking weakly. Actually, most of the time is the alarm signal that the node is going to die soon :D - Raf
2009/8/25 Xiaogang Yang <[email protected]> > Nope, I just use telosb. So it seems like you also have the same problem? > > On Tue, Aug 25, 2009 at 3:39 PM, Raffaele Gravina < > [email protected]> wrote: > >> Hi, >> did you tried with another basestation node? I use tmoke sky/telosb nodes >> and sometimes the usb connectors start to don't work happily anymore! >> >> - Raffaele >> >> 2009/8/25 Xiaogang Yang <[email protected]> >> >>> Hello, everybody: >>> I encounter a problem in my recent research as follows: >>> I cannot send message from pc to mote reliably, so I turn on the DEBUG of >>> Packetizer.java >>> Then I found when PC send msg to mote through serialport, ack timeout >>> happen frequently. >>> I doubt whether my application has problem, so I change to Octopus which >>> could send msg to mote, >>> and I found success of sending msg has low probability. So I doubt >>> whether there is some tricky thing between support/sdk/java/tinyos.jar >>> and serial port. >>> >>> Does anyone has such kind of experiences? downstream of data cannot >>> transmitted reliably at all, most time even just fail, but when I restart >>> the mote, >>> at the beginning, the probability of success is high, then lower. >>> >>> Thanks >>> >>> -- >>> Xiaogang Yang >>> Sensorweb Research Laboratory >>> http://sensorweb.vancouver.wsu.edu/ >>> Washington State University Vancouver >>> >>> _______________________________________________ >>> Tinyos-help mailing list >>> [email protected] >>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>> >> >> >> > > > -- > Xiaogang Yang > Sensorweb Research Laboratory > http://sensorweb.vancouver.wsu.edu/ > Washington State University Vancouver >
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