Freescale 56F8322 (56800E) programming probs

Hi,

I'm using CodeWarrior for 56800/E Special Edition v7.2 and a 
parallel port JTAG command converter. For some reason, programming 
the 56f8322 flash with CW does not work. With CCS server running, CW 
connects fine and without complaints over the JTAG adapter, and 
shows sensible hex/asm uploaded data for the compiled source, but a 
P mem dump returns 0xFFFF's and a P mem fill with e.g. 0xABAB gives 
an error. When I disconnect 3.3V power from the 56f8322, CW says 
that the communication with the core was cut - as I'd expect.

So all in all the JTAG comms seems to work fine, but still flash 
programming fails (error & all reads back as 0xffff). Any ideas?

Another odd thing is that all 56f8322 I/O pins are high and put out 
2.5V, while the datasheet seems to suggest this should be 3.3V?! Or?

And, does anyone know if there are better JTAG software tools for 
the 56800E hybrid series?

E.g. for flashing and debugging? Because frankly, the CodeWarrior SE 
debugger sucks big time...

(I'm running the 56f8322 only with 3.3V supply in, decoupling 
capacitors, and jtag cable, no other components connected, and 
already tried pull-up R on !RESET pin but to no avail. 56f8322 draws 
90mA, JTAG works. No code-protect and hopefully no blown chip fuse 
either...)

thanks,
  - Jan

I believe Freescale also makes a USB emulator for too.

"Jan Wagner" <no_spam@thanks.net> wrote in message 
news:dfphpr$6vv$1@nyytiset.pp.htv.fi...
> Hi,
>
> I'm using CodeWarrior for 56800/E Special Edition v7.2 and a parallel port 
> JTAG command converter. For some reason, programming the 56f8322 flash 
> with CW does not work. With CCS server running, CW connects fine and 
> without complaints over the JTAG adapter, and shows sensible hex/asm 
> uploaded data for the compiled source, but a P mem dump returns 0xFFFF's 
> and a P mem fill with e.g. 0xABAB gives an error. When I disconnect 3.3V 
> power from the 56f8322, CW says that the communication with the core was 
> cut - as I'd expect.
>
> So all in all the JTAG comms seems to work fine, but still flash 
> programming fails (error & all reads back as 0xffff). Any ideas?
>
> Another odd thing is that all 56f8322 I/O pins are high and put out 2.5V, 
> while the datasheet seems to suggest this should be 3.3V?! Or?
>
> And, does anyone know if there are better JTAG software tools for the 
> 56800E hybrid series?
>
> E.g. for flashing and debugging? Because frankly, the CodeWarrior SE 
> debugger sucks big time...
>
> (I'm running the 56f8322 only with 3.3V supply in, decoupling capacitors, 
> and jtag cable, no other components connected, and already tried pull-up R 
> on !RESET pin but to no avail. 56f8322 draws 90mA, JTAG works. No 
> code-protect and hopefully no blown chip fuse either...)
>
> thanks,
>  - Jan 

DirtDobber wrote:
> I believe Freescale also makes a USB emulator for too.

Yeah well functionally that's the same as the parallel port JTAG, I 
believe - and as said, the JTAG works fine. Could be I just somehow 
managed to kill the chip (ESD?) or that the datasheet pin-out is 
somehow incorrect, so I now ordered Freescale's very cheap 
MC56F8300DSK developer starter kit and board that has nearly the 
same hybrid-DSP. If the DSK works properly, I'll have to recheck my 
circuit...

  - Jan