Hi all,
I want to debug my SoCKit with OpenOCD. Do you achieved any progress
with the USB Blaster II? If I try to connect with GDB, I get the
following error log:
Error: JTAG-DP OVERRUN - check clock, memaccess, or reduce jtag speed
Error: MEM_AP_CSW 0x2800060, MEM_AP_TAR 0x0
Info : accepting 'gdb' connection from 3333
Error: Target not examined yet
in procedure 'halt'
Error: Register map is not available yet, the target is not fully initialised

Is the error related to the USB Blaster II driver/JTAG speed? Could
someone outline what someone needs to do to get it work properly? I
maybe give it a try.

Thanks!

> Hi Frank, sorry I didn't see this go by in November.  Testing was very
>
> limited, I was basically introducing what I knew at the time for further
> development by the community.  But I'm sure you know that by now.  I'm just
> now getting back to altera SoC work, and decided to try out your usb
> blaster II support.  Looks like good progress, but I am getting JTAG-DP
> overrun errors.
> Have you been able to do a debugging session with this driver yet?  Maybe
> you have a few pointers on how to get started.
> Regards,
> Brad
> >
> >
> On Tue, Nov 5, 2013 at 2:10 PM, Franck Jullien <franck.jullien@...>wrote:
> > 2013/11/5 Franck Jullien <franck.jullien@...>:
> > > Ok, it works with the old USB-Blaster.
> > >
> > >> Debug: 227 210 arm_adi_v5.c:665 dap_syssec_kinetis_mdmap(): id doesn't
> > >> match 24770002 != 0x001C0000
> > >
> > > I was worried about this but it seems normal.
> > >
> > >> Debug: 228 257 adi_v5_jtag.c:271 jtagdp_transaction_endcheck():
> > jtag-dp: CTRL/STAT error, 0xf0000003
> > >> Debug: 229 257 adi_v5_jtag.c:291 jtagdp_transaction_endcheck(): MEM-AP
> > Cached values: ap_bank 0x0, ap_csw 0xa2000020, ap_tar 0x0
> > >> Error: 230 257 adi_v5_jtag.c:295 jtagdp_transaction_endcheck(): JTAG-DP
> > OVERRUN - check clock, memaccess, or reduce jtag speed
> > >> Debug: 231 278 adi_v5_jtag.c:315 jtagdp_transaction_endcheck():
> > jtag-dp: CTRL/STAT 0xf0000001
> > >> Error: 232 324 adi_v5_jtag.c:331 jtagdp_transaction_endcheck():
> > MEM_AP_CSW 0x2800060, MEM_AP_TAR 0x0
> > >> Debug: 233 324 openocd.c:147 handle_init_command(): target examination
> > failed
> > >
> > > This is my problem. The USB-Blaster II JTAG clock is much higher than
> > > the old one (25MHz vs 6MHz).
> > > I'll try to slow it down (it's not that easy bec
> >
> > Oups...
> >
> > ...because of the USB Blaster protocol.
> >
> > I'll keep you informed.
> >
> > Franck.
> >

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