Forums

Using Parallel Interface Cable with flash_over_Jtag

Started by Jean-Philippe Arbic September 22, 2003
I am curently working on a DSP56F807. I'm wondering how is it
possible
to directly upload my s-record in the DSP without using a EVM. I
tried
to use a Parallel Interface Cable as described in this document:
http://e-www.motorola.com/files/dsp/doc/ref_manua
l/DSP56F807EVMUM.pdf
.
I connected the pin of the JTAG end of the Cable to the coresponding
pin of the DSP. When I use the flash_over_jtag program after that I
got an error " Target chip refused to enter Debug mode! "

Is this technique supposed to work?



Are you using your own target board with your own parallel
port command converter? Did you copy the EVM schematics
exactly, connections and the parallel port parts?

If you are, does your parallel port command converter work with
your EVM using CodeWarrior (the on board command converter
needs to be disabled)?

Does CodeWarrior work with your target application board and
your parallel port command converter?

Which parallel port are you using? Anything other than LPT1
requires using the command line switch with flash_over_jtag.

Can you use flash_over_jtag with the EVM?

Can you see the JTAG lines wiggle at the DSP when you try to
use flash_over_jtag? Is there a burst of pulses on TCK, TDI and
TDO when you do? [BTW, if you don't already have CodeWarrior, 6.0 is now available
with a permanent license free for download and will generate up
to 8k words of code and data. (Larger applications require the
purchase of a license.)]

Regards,
david --- In , "Jean-Philippe Arbic"
<alphaaqua@y...>
wrote:
> I am curently working on a DSP56F807. I'm wondering how is it
> possible
> to directly upload my s-record in the DSP without using a EVM. I
> tried
> to use a Parallel Interface Cable as described in this document:
> http://e-www.motorola.com/files/dsp/doc/ref_manua
> l/DSP56F807EVMUM.pdf
> .
> I connected the pin of the JTAG end of the Cable to the
coresponding
> pin of the DSP. When I use the flash_over_jtag program after that I
> got an error " Target chip refused to enter Debug mode! "
>
> Is this technique supposed to work?