recover flash that was interrupted during programming

Jut Shanahan

Other Parts Discussed in Thread: TMS570LS10106

Is it possible to recover flash that was "depleted"? I.E., flash that lost power during programming? My 3.3V power supply was sagging during programming and I cannot program the processor anymore.

Q: How does depletion occur?

A: If the erase operation is interrupted and not allowed to complete, the device may become depleted. When this happens, the device may then begin to fail to erase. The erase algorithm should not be stopped, as this can also affect the CSM passwords. The Flash API has a depletion recovery function to try to recover flash that has been "over-erased". If the flash programming process was interrupted during the erase stage, it is possible that the timed loops that do the erasing process were disturbed.

source: http://processors.wiki.ti.com/index.php/C2000_Flash_Common_Issues/FAQs#Depletion

over 13 years ago

0 A Arora over 13 years ago

TI__Mastermind 30845 points

Jut,

the answer may be different depending on which part you are using. Please let us know the part number in you case.

Regards,

Abhishek

0 Jut Shanahan over 13 years ago in reply to A Arora

Prodigy 230 points

I'm using the tms570ls10106.

0 John Hall over 13 years ago in reply to Jut Shanahan

TI__Genius 9015 points

To recover this device from depletion, you will need to continually run the compaction operation on the device until it finishes successfully. This could take just a few compaction operations or several hundred depending on how bad the device is in depletion.

0 Jut Shanahan over 13 years ago in reply to John Hall

Prodigy 230 points

Please explain the compaction procedure. I don't see options for it in NowFlash.

Thanks,

Jut

0 John Hall over 13 years ago in reply to Jut Shanahan

TI__Genius 9015 points

It is not a published option in nowFlash. You will need to open a command line prompt and switch into the nowFlash directory.

From the nowFlash gui copy the argurments shown above circled in red replacing the -er with -cs and create the following command:

nowFlash -cs -d -emu SDXDS510USB -p 510 -cpu CORTEX_RXX -targets 1

and execute this. This will perform the compaction operation on the device.

0 Jut Shanahan over 13 years ago in reply to John Hall

Prodigy 230 points

Thanks John, that worked -- I was able to program the flash afterwards. I had to play around with the frequency and PLL options quite a bit though to make it work. In other words, I had to keep changing the "Freq" field to match the measured frequency, which seems to randomly change each time you program. Is there any fix for that?

0 John Hall over 13 years ago in reply to Jut Shanahan

TI__Genius 9015 points

Which version of nowFlash are you using? Depending on which emulator you are using, the speed calculation can be problematic due to USB latencies. We made some attempts to make it more robust in the latest version of nowFlash.

0 Jut Shanahan over 13 years ago in reply to John Hall

Prodigy 230 points

I've been using NowFlash version 3.41

Note that I was experiencing speed calculation problems with the low end Blackhawk XDS100, and the high end Spectrum Digital XDS510 USB PLUS.

0 John Hall over 13 years ago in reply to Jut Shanahan

TI__Genius 9015 points

We keep looking for a more robust method for the frequency calculation, but this may not be possible for devices that existed prior to the RM48x/TMS570LS31x devices.

Arm-based microcontrollers

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recover flash that was interrupted during programming