Lpc2000

Where this code came from ? Do you have the full source code for any of 
the LPC boot loaders ?
Thanks, Mauricio



jayasooriah wrote:
> --- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@a...> wrote:
>
> > I was hoping for something a little more substantive
> > than the third party link to the site you already posted.
>
> Google search on "Philips SP uC ProdOv" gives quite a few hits, and I
> am quite sure they are from the same source in Philips.
>
> > Philips, you need to clarify this.  Can these parts be
> > parallel programmed or not?  Is the literature on your
> > site wrong or is the letter that was sent to Jaya wrong.
> > They cannot both be right.
>
> I am as anxious as you are to clarification by Philips.
>
> > >I am not sure about others, but from what I learnt in the
> > >last couple of weeks in relation to: a) on-chip flash
> > >programming algorithm; b) parallel programming info;
> > >c) errata sheets for LPC2105; and d) source for the
> > >supplied boot loader code, it is now pretty clear to
> > >me why Philips has chosen to provide boot loader code
> > >so that they do not *have* to release the kind of
> > >information I discovered.
> >
> > Well, don't just leave us hanging ;)
>
> For example, from version 1.48 of boot loader for LPC2104/5/6, one
> could derive code to erase entire on-chip flash as follows:
>
> > // select all sectors
> > FMDEV[7] = 0xff0000ff;
> > FMDEV[6] = 4;
> > fmDelay(90);
> > FMDEV[6] = 0;
>
> > // wipe marked sectors(s)
> > FMDEV[10] = CCLK/200;
> > FMDEV[11] = (400*CCLK)/2048 + 1;
> > FM_DEV[6] = 2;
> > fmDelay(CCLK/90 + (400*CCLK + 2048)/9);
> > FM_DEV[6] = 0;
>
> > // wait for completion ...
> > while ((FMDEV[6] & 0x1f) != 0)
> >     ;
> > while ((FMDEV[36]) & 4) == 0)
> >     ;
>
> Accidentally trashing FM_DEV[6] can result in disaster!
>
> FMDEV[10] and FMDEV[11] appear to hold on-chip charge pump parameters
> for generating erase (and write) voltages.  It is possible trashing
> these locations can fry the part for good.
>
> Now do you see why Philips would withold release of such information?
>
> Jaya
>
>
>
>
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