LPC921

[KS Tan]

Hi,
I notice there is no verify options for LPC921 on the Flash Magic?  I go further and realised that all LPC9xx does not have the verify options as well whereas if you select any non LPC9xx device you will be able to run the verify option.  Anyone knows why the LPC9xx does not or do not support verify options in Flash Magic?

regards,
KS Tan

[Andy Ayre]

Yes, because the LPC9xx devices do not support the reading of Flash Memory via ISP. In order to verify you need to use a CRC feature.

[KS Tan]

Thanks, but the CRC block 0, 1, 2 tallys for both device and memory, but does not match for block 3 and therefore, the overall CRC value does not match at the last row (after block 3).

[Andy Ayre]

The CRCs should match, however if that block contains the bootloader, or if any of the blocks contain filled bytes, checksums or anything else added by Flash Magic, then the CRCs won't match.