Lpc2000

On Mar 21, 2006, at 11:53 AM, planiup wrote:

>  I did not initialize the vector table, since I'm only trying to
>  toggle pin P0.0.
>

The bootloader will always get entered on boot-up if the proper 
checksum word is not written. The checksum is the 2's complement of the 
sum of all the vectors.

However, another problem might arise: what is the state on your P0.14 
pins ? If it is floating, the bootloader might start always since a LOW 
on P0.14 on reset causes entry in the bootloader. Add a switch to 
ground on P0.14 with a pull-up to Vdd and keep it depressed while you 
reset to enter bootloader mode.

Of course, if the checksum is not right, it will also enter bootloader. 
The Philips flash utility calculates it for you, though.

Best Regards,

Tennessee Carmel-Veilleux