On Fri, May 29, 2009 at 10:08 AM, Duane Ellis <open...@duaneellis.com> wrote: > I'm talking about basic continuity and pin drive, and ability to read a > digital value on a pin. > > If I had a program that could take the Schematic netlist + the BSDL files > for a couple complex chips - and give me a SVF file or something like that - > to verify basic connectivity on the board - wow!
I think this is what the expensive testers and some mid-cost JTAG tools are doing. > For those pins attached to a memory device - a simple memory test > would be powerful. > If I could get OpenOCD to 'wiggle' a pin - that would be great. > > Imagine > (1) being able to plug OpenOCD/JTAG into the board. > (2) using some gerber view program - view the PCB > (3) Double click on a pin, or a trace with a mouse > (4) The trace starts blinking > (5) And openocd makes the trace toggle 0/1 > > That alone would be a powerful debug tool, no debug software to write, no > flash to program, no nothing. > Thanks. Indeed this sounds like a great tool for hardware tests. But I am not so sure about how difficult to integrate this with a Gerber View program (or full-fledged E-CAD programs). Back to the basic, how can OpenOCD to wiggle a pin (forget about the PCB Gerber View integration part)? Is this possible? I am not so familiar with JTAG. But intuitively I think this is already difficult. Without downloading a small program to the chips, how do you toggle an I/O pin? -- Xiaofan http://mcuee.blogspot.com _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
