You can of course write your own serial code by following the TEPs and that octaveTech paper on the format. It's actually pretty easy if you are only receiving because you can skip all the CRC stuff.
However, in my experience with T1, the transmission rate seems to be limited by the baud-rate and the cycle time in the Base-station. Even using Java, 'modern' computers should be able to keep up with it, and probably even write the results to a disk or net port for sustained periods. Perhaps you have some other bottleneck? MS antonio gonga wrote: > Hey all, > I'm trying to create a Packet analyzer in nesc/tinyos like Whireshark. > I started by modifying the BaseStation. My first approach was to resize > the messages at the BS so that a timestamp and other relevant packet > header fields could be inserted into the payload. This allows the Java > parser to decode any type of fields in the incoming message. I also use > a configuration file(XML) that indicates the position and size of some > fields in the incoming array of bytes. > > The process of resizing seems to consume so much time because it > creates an additional packet, so I decide to relay the data traffic as > the BaseStation does, and to send an addicional packet containing the > timestamp and other header fields for each received packet. In both > cases I use a circular buffer as the input buffer. It does not work as I > expect it to work. The problem seems to be in the part sending to the > serial port. > My question is: What´s the maximum number of packets can I send to the > serial Interface? I'm testing the sniffer with a sensor sending data as > fast as it can, but It seems that the Sniffer does not handle all the > incoming packets. I do store them into an input buffer, but the speed of > sending to the serial port seems to be the main issue. > > Is it possible to use or write directly to the serial port from a nesc > App without using the serialActiveMessageC component? > I'm thinking to embed a C code into a nesC app, so that I could access > directly to the UART, and send the packet as sequence of bytes as It > arrives. > > Thanks in Advance. > -Antonio > > > ------------------------------------------------------------------------ > Connect to the next generation of MSN Messenger Get it now! > <http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline> > > > ------------------------------------------------------------------------ > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- Platform: WinXP/Cygwin TinyOS version: 1.x, Boomerang Programmer: MIB510 Device(s): Mica2, MicaZ, Tmote Sensor board: homebrew _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
