Hi,
I use the MCB900 board with the ISP to ICP bridge code into it to program a LPC921.
The first time i progam a LPC921 it works all as expected.
However when i try to reprogram the part, only the lowest sector (or block) gets erased and rewritten.
I am pretty sure this has nothing to do with build settings, because when i do a erase in FM of all sectors followed by a blank check, only the lowest sector is blank. Sectors 1 and up remain unchanged. I checked the security bits, they are all 0.
Anyone got a clue of what is going on here? And even better how to fix it?
Is there a way of doing a global erase command with the FM tool (with the ISP to ICP bridge)? Maybe that gets things working again.
I tried 3 different LPC921's all the same problem.
I also noticed that the CRC's never are as expected.
Reprogramming an application what fits entirely into sector 0 does work. However after doing that for a couple of times, the device wont run anymore (bit still is recognized by FM though).
Best regards,
Marc
Could it be that you have glitches on the ICP side of the communications path?
To perform a full device erase ensure you have the ICP bridge selected as the interface and Protect ISP disabled in the advanced options. Then go to ISP -> Erase and choose to erase all the flash.
Andy