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F28335 eZdsp flash error: Data verification failed at address 0x338978. Please verify target memory and memory map.

Hello,

I'm working on a project using eZdsp F28335. It receives data from CAN and then burns it into the internal flash memory (Zone 7 external SRAM was used for buffering). The software worked in debug mode (with JTAG connection) but stopped working in standalone mode (JTAG is disconnected).  I suspected that it may because I did not initialize the Zone 7 external memory. So I added the sample code init_zone7() from "C:\tidcs\c28\DSP2833x\v131\DSP2833x_examples\dma_xintf_to_ram\Example_2833xDMA_xintf_to_ram.c".  Then I programmed the .out file into flash using the plug-in flash utility in CCS3.3.  However since then I have been receiving the following error message whenever I try to re-program the flash:

"Data verification failed at address 0x338978. Please verify target memory and memory map."

Could anyone give me some ideas on how to fix it?  Is the F28335 internal flash corrupted?  In CCS 3.3 I'm able to connect to the eZdsp F28335 and I can see the content of internal flash (sector A, B ...).  I can see the values from 0x33FFF8 through 0x33FFFF are all 0xFFFFs, so I believe the flash is not locked.

Thanks a lot for your help in advance!

Danny