On Monday 12 October 2009, Jiří Kubias wrote:
> Im using Amontec JTAGkey2 with FT2232H with LPC2364.  The Openocd often
> reports me this error:
> Error: couldn't read the requested number of bytes from FT2232 device (76 < 
> 81)
> Error: couldn't read from FT2232
> 
> Im using libftdi. Usually I get this error consecutively for random times.
> But after couple restarts it start working.

Someone with FT2232H experience may have ideas.  Do you know whether
it's trying to use the higher speed clock rate?  Or adaptive clocking?


> I also get this error
> Error: EmbeddedICE v7 handling might be broken

That suggests problems to me.  The LPC2364 uses ARM7TDMI-S rev4, yes?

Docs on that are a bit confused.  infocenter.arm.com says that the
EmbeddedICE version there should be 1, not 7.  Yet it also says that
the CTRL and STAT registers have sizes that don't match other v1 parts.
I suspect some docs are wrong...


If you can, try to sort out the issues with the r4 ARM7TDMI-S core
with some JTAG adapter that's not so shiny new ... maybe an older
FT2232 adapter (not FT2232H).  If there are no such issues, that
suggests strongly that you have just one problem, $SUBJECT related.
Otherwise you might well have two problems ... or just one, that's
not related to $SUBJECT.

- Dave

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