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Discussion Groups | 68HC12 | MC9S12NE64 Wiped top 256 bytes of Flash
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
MC9S12NE64 Wiped top 256 bytes of Flash - griglack - Apr 7 14:09:00 2005
I was adding code to erase and write a sector of flash, when I
accidentally erased the top 256 bytes of flash (0xff00 - 0xffff)
because I am working with multiple products/chipsets and thought the
NE64 had 256 byte sector instead of the 512 bytes it does. This
contains the memory map for the BDM. Now, I can no longer talk with
the board via the BDM and the P&E Micro Multilink USB cable.
I fail to believe that I am the first one to screw this up (so seldom
do we screw up in truly unique ways), so there has to be a proceedure
to restore things so that my multilink cable can talk to the board
again. Can you please tell me where I can find such a proceedure?
Thanks,
Jeff
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Re: MC9S12NE64 Wiped top 256 bytes of Flash - Dr. David A. Perreault - Apr 7 15:08:00 2005
In the process, you secured the device. Go to P&E's website
(www.pemicro.com) and download the free utility unsecure_12. This should
probably fix your problem.
Dave griglack wrote: > I was adding code to erase and write a sector of flash, when I
> accidentally erased the top 256 bytes of flash (0xff00 - 0xffff)
> because I am working with multiple products/chipsets and thought the
> NE64 had 256 byte sector instead of the 512 bytes it does. This
> contains the memory map for the BDM. Now, I can no longer talk with
> the board via the BDM and the P&E Micro Multilink USB cable.
>
> I fail to believe that I am the first one to screw this up (so seldom
> do we screw up in truly unique ways), so there has to be a proceedure
> to restore things so that my multilink cable can talk to the board
> again. Can you please tell me where I can find such a proceedure?
>
> Thanks,
> Jeff >
>
> ------------------------------------------------------------------------
> >.
[Non-text portions of this message have been removed]
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
(www.pemicro.com) and download the free utility unsecure_12. This should
probably fix your problem.
Dave griglack wrote: > I was adding code to erase and write a sector of flash, when I
> accidentally erased the top 256 bytes of flash (0xff00 - 0xffff)
> because I am working with multiple products/chipsets and thought the
> NE64 had 256 byte sector instead of the 512 bytes it does. This
> contains the memory map for the BDM. Now, I can no longer talk with
> the board via the BDM and the P&E Micro Multilink USB cable.
>
> I fail to believe that I am the first one to screw this up (so seldom
> do we screw up in truly unique ways), so there has to be a proceedure
> to restore things so that my multilink cable can talk to the board
> again. Can you please tell me where I can find such a proceedure?
>
> Thanks,
> Jeff >
>
> ------------------------------------------------------------------------
> >.
[Non-text portions of this message have been removed]
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Re: MC9S12NE64 Wiped top 256 bytes of Flash - griglack - Apr 14 11:41:00 2005
I finally got back around to trying "unsecure_12" out. In the mean
time, I had just grabbed another proto board out of the box. It fixed
the problem for me. Thank you.
--- In 68HC12@68HC..., "Dr. David A. Perreault" <dap@p...> wrote:
> In the process, you secured the device. Go to P&E's website
> (www.pemicro.com) and download the free utility unsecure_12. This
should
> probably fix your problem.
>
> Dave > griglack wrote:
>
> >
> > I was adding code to erase and write a sector of flash, when I
> > accidentally erased the top 256 bytes of flash (0xff00 - 0xffff)
> > because I am working with multiple products/chipsets and thought the
> > NE64 had 256 byte sector instead of the 512 bytes it does. This
> > contains the memory map for the BDM. Now, I can no longer talk with
> > the board via the BDM and the P&E Micro Multilink USB cable.
> >
> > I fail to believe that I am the first one to screw this up (so seldom
> > do we screw up in truly unique ways), so there has to be a proceedure
> > to restore things so that my multilink cable can talk to the board
> > again. Can you please tell me where I can find such a proceedure?
> >
> > Thanks,
> > Jeff
> >
> >
> >
> >
> >
------------------------------------------------------------------------
> > >.
> >
> > [Non-text portions of this message have been removed]
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