F021FLASHAPI: NMI_ISR is called while executing "Fapi_setActiveFlashBank" in C28 on Concerto

Disona

Part Number: F021FLASHAPI
Other Parts Discussed in Thread: CONTROLSUITE

Hello everyone

I'm having a problem with Concerto flash_prog examples.

I try to run an example from controlSUITE "C:\ti\controlSUITE\device_support\f28m35x\v208\F28M35x_examples_Dual\flash_prog\c28\". But the program falls into NMI_ISR() during execution of "Fapi_setActiveFlashBank". Stack shows problem at: "Fapi_setActiveFlashBank(enum <unnamed>)() at FlashStateMachine.c:270 0x00833D".

Actually it worked for a while, until I tried to clear all the flash memory with Fapi_issueAsyncCommandWithAddress(). But memory window showed, that flash wasn't erased. After that I started to get this problem with "setActiveFlashBank". I've tried to run the example "Out-of-box" - without any change - same problem.

My other projects (without invoking FlashAPI) can be flashed and run properly.

over 8 years ago

0 Disona over 8 years ago

Genius 3050 points

I'm not sure, if this was a solution, but I've copied from other example:

    EALLOW;
    FlashEccRegs.ECC_ENABLE.bit.ENABLE = 0x0;
    EDIS;

It helped.

If anyone could explain, please do it.

0 Cedric 40627 over 8 years ago in reply to Disona

Expert 1580 points

Just to double check but do you run your code from RAM ?

0 Disona over 8 years ago in reply to Cedric 40627

Genius 3050 points

Cedric 40627 said:
Just to double check but do you run your code from RAM ?

Yes, Cedric. The projects resides in flash, but all of the functions are placed into "secureRam" with #pragma section and are copied from flash to RAM with "memcpy". I've checked it in disassembly window.

And as I mentioned, disabling ECC fixed this problem somehow. But I'm sure, that there was no problem before even without disabling ECC...

0 Vamsi Gudivada over 8 years ago in reply to Disona

TI__Guru* 87155 points

Disona,

What is the revision of your device? If it is Rev0, you need to disable ECC-check before your application can use Flash API functions. Please check the below advisory in errata.

Advisory: Flash ECC: C28x 'Flash Uncorrectable' Error Generated When Executing F021 Flash API Functions With Flash ECC Enabled

Thanks and regards,

Vamsi

0 Disona over 8 years ago in reply to Vamsi Gudivada

Genius 3050 points

Yes, looks like that was the problem. I believe I have Rev. 0, because I'm using an old ControlCard. Thank you for your advice.

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F021FLASHAPI: NMI_ISR is called while executing "Fapi_setActiveFlashBank" in C28 on Concerto