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Unexpexted value in flash memory in lpc11c24.

I am using a lpc11c24 (ARM cortexM0) microcontroller. I have remapped the vector addresses after 0x2000. The memory allocation for my code starts from 0xC1. The prior addresses are the default interrupt vector locations. My hex or axf file shows 0x0 value at location 0x1C. But, somehow when I program the file into flash, the location shows a different value only at this location. All the values at other locations match correctly. What is happening here?

Thanks!

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0 Martin Günther over 13 years ago

Hello Amol Khedkar,

NXP Cortex devices rely on a checksum over the first seven vectors. This checksum is calculated and written to the location 0x1C during dowloding your program to Flash.

Best Regards,
Martin Guenther
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0 Martin Günther over 13 years ago

Hello Amol Khedkar,

NXP Cortex devices rely on a checksum over the first seven vectors. This checksum is calculated and written to the location 0x1C during dowloding your program to Flash.

Best Regards,
Martin Guenther
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0 Amol Khedkar over 13 years ago in reply to Martin Günther

Oh.. Right. Thanks Martin!
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