In December 2004 Robert Szewczyk posted to Tinyos-contrib-commit instructions on how to use JTAG functionality through the USB connection of a telosb (via the D2xx FTDI driver and some associated programs/dlls). This is repeated in http://www.cs.utah.edu/~vchakra/msp430-jtag.html
The JTAG functionality uses the HIL and MSP430mspgcc DLL's and appears to be quite limited. Is it possible to use full JTAG functionality through this interface, to allow IDE's like IAR and Code Composer to debug C programs on the telosb? I am wondering whether it might be possible to write a virtual parallel port driver on top of the D2XX driver, in order to emulate a parallel JTAG tools that the JTAG dll of these tools would be able to communicate with. I know that the boards do have pads for a JTAG connector and that Moteiv is recommending using a dedicated JTAG tool to access the processor, but I am thinking about using the boards in an introductory course on embedded computing, which means that (1) I prefer not to need a JTAG tool per student, and (2) I want to start the course with programming the raw hardware in C using a debugger with a JTAG interface (rather than just a boot loader). Thanks, Sivan Toledo
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