Thank you for the advice, I will try writing the C code for serial communication in 1611 and try getting the results.
On Sun, Jan 27, 2013 at 3:06 AM, Eric Decker <[email protected]> wrote: > 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 > > -- Sincerely, Nishad Kamdar Graduate student BITS PILANI , K K Birla Goa campu*s* Cell: +919503218809
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