First you need to understand the basics of what you are doing. Do you understand how UART communications works and how the interconnect needs to be?
How exactly did you wire Mote0/Uart0 to Mote1/Uart0? You had better have a decent ground and then Mote0/Uart0/TX should go to Mote1/Uart0/RX and vice versa. Then study the UART chapter of the 1611 users guide and write a little C program. (you can embed it in the code called from Boot.booted when the mote boots). You have this little C program, initilize the UART, and then do nothing but check for a TXIFG (means there is space in the outbound transmit queue) and send a well know char of your choice. If you want to be messing around with interconnected embedded systems, you really need to know how to deal with low level programming. And also how to wire things up so that it has a chance of working. That whole thing you tried with the USB denotes a complete lack of understanding of how that stuff is supposed to work. It didn't have a prayer. For USB to work there has to be a controlling host. Hooking two USB devices up back to back doesn't have a prayer. On Sat, Jan 26, 2013 at 1:23 PM, nishad kamdar <[email protected]>wrote: > Hey, > > Thanks for the reply, > > I have also tried the UART 0 on the 10 pin connector and connected the > TelosB motes which did not lead to communication between them. > > I have made the necessary changes, in the PlatformSerialC.nc file for > switching between UART 1 and UART 0. > > Is there anything i am missing to configure like the baud rate or anything > i am not doing what the JAVA code is doing like opening the Ports before > communication? > > Please Advice, > > > > On Sun, Jan 27, 2013 at 1:43 AM, Saeid Yazdani <[email protected]>wrote: > >> I don't think connecting both USB ends of two telosb motes makes sense, >> since the FTDI chip is working only when connected to a proper USB host >> (Such as PC usb port, but not another TelosB mote). >> >> Also the USB on TelosB is connected to UART 1. >> >> If its your only option to use UART1, then you may hardwire two TelosB's >> UART1 by solderin wires directly into the FTDI chip on TelosB (See the >> datasheet). >> >> Other wise you could use UART0 that is on the 10pin header expansion. >> >> Regards, >> Saeid Yazdani >> http://www.eetutorials.com >> >> On 26-1-2013 20:31, nishad kamdar wrote: >> >> Hello all, >> >> I am trying to establish communication between two TelosB motes not via >> the radio but using the UART. >> >> At first I burned the TestSerial Code in both the motes and connected >> their USB ports via a USB Female to Female cable. >> However it did not lead to communication and blinking of the Leds which >> happens normally while using the Java TestSerial Code. >> >> So, i further tried to use the UART 0 using the connectors on the mote. >> I made the required changes in the PlatformSerialC.nc file to use the UART0 >> port. >> But this too did not lead to communication between the motes. >> >> My aim is to interface an Underwater Acoustic modem (SAM 1 from Desert >> Star) to the mote's Serial port through which it can be controlled. >> >> Can anyone please advise me on this matter and help in establishing >> serial communication between TelosB motes. >> >> Thank you in advance. >> >> -- >> Sincerely, >> >> Nishad Kamdar >> Graduate student >> BITS PILANI , K K Birla Goa campu*s* >> Cell: +919503218809 >> >> >> _______________________________________________ >> Tinyos-help mailing >> [email protected]https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> >> >> >> _______________________________________________ >> Tinyos-help mailing list >> [email protected] >> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> > > > > -- > Sincerely, > > Nishad Kamdar > Graduate student > BITS PILANI , K K Birla Goa campu*s* > Cell: +919503218809 > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Eric B. Decker Senior (over 50 :-) Researcher
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