Honored Contributor
Honored ContributorI goofed..
The nios connects to the peripherals in qsys via a clock crossing bridge (master port). So, the nios runs at 100mhz, while the I/Os, leds, are connected on a 10mhz clock to the clock crossing bridge's slave port. When I connected the JTAG Bridge, I assumed it should connect to the same master port as the nios, i.e. to the clock crossing bridge. Nope. I moved the jtag to connect to each peripheral directly, and it worked! Kinda strange though, because the Nios has no problem accessing the peripherals only via the clock crossing bridge connection. C'est la vie! Regarding the gui, I've never used Tcl/Tk before, but it's absolutely amazing that a windows application can be generated/modified in seconds with just a few lines of text (I know of course there's a framework lurking underneath, but still!) I'd love to play with making a continuous graph showing the value of a memory address as it changes over time! Are there any resources you recommend for designing tk guis (there seems to be quite a few, VisualTcl, VisualCamel, SpecTcl, etc). And apparently there's also a python wrapper for Tcl/Tk called TKInter, for which there's even more gui builders for (Rapid-Tk, pygubu. ptkgb,etc)... although not sure how easy it is to convert TKinter (python) GUIs to run on TK (tc). Any suggestions?
