A dll is a dynamically loadable library. And can exist for different processors. The toolchain for the processor and OS that provides the environment must be used to create the dll.
None of this exists for the msp430 tinyos environment. This guy is using concepts from a fairly high level environment and trying to apply them to the embedded tinyos environment. A major reset is needed. On Fri, Apr 15, 2011 at 11:32 AM, Michael Schippling <sc...@santafe.edu>wrote: > A .dll file is compiled for the *86 processor used by the PC > so it has a completely different instruction set from that used > by the MSP. But the worster problem is that the mysql client lib > needs a way to communicate with the mysql server, and there is > no direct link between the mote and that server -- except through > the USB port. > > So you need to write a PC-host level program that gets messages > from your base-station mote and handles the connection to mysql, > kind of like SerialForwarder. There are examples of C host > programs that send and receive TOS messages, but I'm not sure > where since I only use Java now. > > MS > > amira Mnif wrote: > > Thank you for your reply > > > > I want to know why MSP430-gcc compiler of telosb platforms in my > > case, does not compile .dll format library, while gcc and g++ have made > > the linkage with this library when I tested my code with tossim. > > After several tests, I notice that MSP430-ld only accepts .a > > library (static libraries for unix) but MSP430-gcc does not link them to > > the nesc code. > > > > As regards what I want to do: > > I want to achieve a system of authentication of motes in a WSN for that > > I assumes: > > 1- node (1) which sends its identifier via radio communication to a > > node (2) containing the program BaseStation > > 2- This node (2) is connected via USB to a PC containing mysql server > > 3- as soon as the node (2) receives the identifier, it connects to the > > mysql database to see if such a key exists or not in the database > > 4- node (2) returns the authentication result to the node (1) > > please help me if there is something not logical. > > > > ------------------------------------------------------------------------ > > *De :* Michael Schippling <sc...@santafe.edu> > > *À :* amira Mnif <amira_m...@yahoo.fr> > > *Cc :* tinyos-help@millennium.berkeley.edu > > *Envoyé le :* Jeu 14 avril 2011, 20h 15min 27s > > *Objet :* Re: [Tinyos-help] link with mysql library > > > > I gather you are trying to link mysql into a TOS program? > > Most likely libmysql.dll is being ignored because it is > > not in a format acceptable to the telosb linker. > > > > But on a larger scale: How do you propose for the TOS code > > to communicate with the database? TOS is running on the > > "other end" of a USB connection and can't open ethernet > > ports to host level processes. What you probably want to > > do is write a host level program which links the the base- > > station over USB to mysql. > > > > MS > > > > > > > > amira Mnif wrote: > > > Hello, > > > I work with TinyOS-2.x installed under cygwin, and I have a mysql > > server installed into Windows 7. > > > I want to make a connection to a database created in MySQL from a > > component nesc, actually I want the application BaseStation connects to > > the mysql database to verify that an identifier of a node exists or not. > > > For this I have already written a C program that makes the database > > connection and verify that such identifier exists or not, then I run > > this program with *gcc* command in cygwin linking libmysql.dll library: > > > > > > */gcc test.c -lmysql/* > > > */ /* > > > */ > > > /*it works without error but when I copy the code of *test.c* into > > BaseStationP.nc and after adding this line in the makefile of BaseStation > > > */CFLAGS + = -L/usr/local/lib-shared-lmysql /*: to make the linkage > > with libmysql.dll > > > that produced the following errors: > > > $ make telosb > > > > > > /cygdrive/c/Users/Amira/AppData/Local/Temp/ccUTU6G6.o: In function > > `BaseStationP > > > $test': > > > app.c:(.text+0x3b4c): undefined reference to `mysql_init' > > > app.c:(.text+0x3b92): undefined reference to `mysql_real_connect' > > > app.c:(.text+0x3ba2): undefined reference to `mysql_error' > > > app.c:(.text+0x3bac): undefined reference to `mysql_errno' > > > app.c:(.text+0x3bbe): undefined reference to `mysql_close' > > > app.c:(.text+0x3bd6): undefined reference to `mysql_query' > > > app.c:(.text+0x3be2): undefined reference to `mysql_error' > > > app.c:(.text+0x3bf0): undefined reference to `mysql_use_result' > > > app.c:(.text+0x3bfc): undefined reference to `mysql_fetch_row' > > > app.c:(.text+0x3c32): undefined reference to `mysql_free_result' > > > app.c:(.text+0x3c3a): undefined reference to `mysql_close' > > > make: *** [exe0] Error 1 > > > I know that these errors are the result of the non-linkage with > > libmysql.dll > > > how to make a linkage with a library in nesc? > > > Please help me. > > > > > > > > > > ------------------------------------------------------------------------ > > > > > > _______________________________________________ > > > Tinyos-help mailing list > > > Tinyos-help@millennium.berkeley.edu > > <mailto:Tinyos-help@millennium.berkeley.edu> > > > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- Eric B. Decker Senior (over 50 :-) Researcher
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