Lpc2000

--- In lpc2000@yahoogroups.com, "unity0724" <unity0724@...> wrote:
>
> Hello!!..  Bootloader...
> Why not you do something more fantastic for group members here:
> 
> =>Something that able is to copy the bootloader from one chip 
> to another.

You could (possibly) use it to upgrade LPC2104 to LPC2106 by simply
copying the boot loader across.  Philips will not like this.

[Newer variants of LPC2104/5/6 are rom'ed, but the same applies to any
other compatible variant that is not rom'ed.]

> ARM7 firmware #1
> - Name "SOURCE.HEX"
> - Burn onto chip #1 with newer bootloader
> 
> ARM7 firmware #2
> - Name "DESTINATION.HEX"
> - Burn onto chip #2 with older bootloader
> 
> Then
> - Connect the 2 chips through UART0.
> - Power up the 2 chips together
> - Bootloader automatically get copied from Chip #1 to Chip #2
> - Chips toggle Txd line at 1Hz once completed copying.

Been there, done that.  Not exactly the way you have described though
but by making the two phases independent of each other.

It would be interesting to know what happened to the case were a
poster here claimed got a bunch of chips labelled as one part, but
whose boot loader reported as a different part.

There may be some clues here if we knew how it was resolved.

> I guess quite some people here will use it.   And no longer need
> to wait for Philips releasing of BootLoader Upgrade.

I did not realise people were waiting on boot loader upgrades.  Why?

> Better if you can make it more plug and play.  You can keep
> your source code.   Only need to promise you do not plant a 
> Trojan-horse onto the chips.  :)

Actually I prefer to open the source code (at least the core
components) so that the user assumes some responsibility.

I say "core" because I like the user to tie the final knot.

> What can philips complain??  as long as you do not modify
> some flash memory area you called "bootsector" (or bootblock??)
> May be philips will thank you, Umm...I mean unofficially   :)

I made the offer to Philips through this forum.  Philips declined to
take up the offer.  I refuse to put myself in a position that may
result in my being rendered the next time step into some foreign soil.

Jaya