Re: [OpenOCD-devel] Reset values resolved...

[Jens B. <jen...@gp...>]

Hi Brandon.

On Fri, 8 Nov 2013 17:31:01 -0500, Brandon Warhurst wrote:
>  I suspected that an incorrectly pulled NTRST was screwing me up.  It 
> appears that I still get the same bogus IDCODE however.  I expected 
> to see the TI icepick, but instead I'm getting 0xfe3ff81f, which 
> MIGHT be a correct value, but I suspect it's bogus.

I've seen incorrect ID values whenever I had ~RESET wired up incorrectly.
(and for that matter, whenever I forgot to turn on target power).
Sometimes I checked the connections, re-checked them, re-checked them a third time...
I couldn't see anything wrong, everything looked fine.
But in fact, my ~RESET /was/ connected incorrectly, which is why I often speak about checking the connections.
...Sometimes checking a different way might be a good idea: disconnect the JTAG, then use a multimeter to check the voltage levels on the JTAG pins to see if the pull-up resistors are connected correctly.
(And don't always trust that a board you've bought will be usable. I bought one which can never be flashed, due to incorrect JTAG wiring!)

...But it's good to hear that you're on the right track.


Love
Jens