TMS320F280039: Stuck in Fapi_setActiveFlashBank()

Zane Wei

Part Number: TMS320F280039

Hi Team,

In the main loop, we run Example_CallFlashAPI(), and when we run to oReturnCheck = Fapi_setActiveFlashBank(Fapi_FlashBank0); At this step, it will get stuck, causing the main loop to no longer run.
There is a 10Us interrupt in the program, and we found that when the 10Us interrupt runs for too long (7.7us), it gets stuck in oReturnCheck = Fapi_setActiveFlashBank (Fapi_FlashBank0),
When the interrupt run time of 10Us is reduced (4.28us), it is work, oReturnCheck = Fapi_setActiveFlashBank(Fapi_FlashBank0);don't get stuck The execution time is 118uS.

We have try in the follow post, but it can't work on this issue.

[FAQ] TMS320F28003x,TMS320F28004x: Flash API usage advisory/errata - C2000 microcontrollers forum - C2000︎ microcontrollers - TI E2E support forums

What causes this problem? Is there another solution?

Best Regards,

Zane

over 1 year ago

0 Vamsi Gudivada over 1 year ago

TI__Guru* 87145 points

Hi Zane,

Where is flash API executed from? Which flash bank are you trying to erase/program?

Thanks and regards,

Vamsi

0 Vamsi Gudivada over 1 year ago in reply to Vamsi Gudivada

TI__Guru* 87145 points

Hi Zane,

Do you need further support on this? Or can I close this post?

Thanks and regards,
Vamsi

0 Zane Wei over 1 year ago in reply to Vamsi Gudivada

TI__Intellectual 1685 points

I need you support!

My customer still have this issue. Now they disable interrupt before Fapi_setActiveFlashBank() and re-enable interrupt after Fapi_setActiveFlashBank() finished, it can work. Can you give me some comment?

Why use this mothed can solve this problem?

Best Regards,

Zane

0 Vamsi Gudivada over 1 year ago in reply to Zane Wei

TI__Guru* 87145 points

Hi Zane,

Maybe the ISR was executing from the same flash bank when the flash API calls were active for that bank?

Thanks and regards,

Vamsi

0 Zane Wei over 1 year ago in reply to Vamsi Gudivada

TI__Intellectual 1685 points

Hi Vamsi,

ISR load from Flash, and run in RAMGS0GS1.

Debug found that when flashing and writing, the main loop will not only get stuck in Fapi_setActiveFlashBank(), but some interrupts will also stop responding, but the highest priority 10us interrupts and the 40us interrupt is still executing.

But in thoes case, Fapi_setActiveFlashBank() can successed:

1. mask the 40us interrupt

2. expand the 40us interrupt to a 60us interrupt

3. shut down the 40us interrupt before the execution of Fapi_setActiveFlashBank(), and then re-enable

Best Regards,

Zane

0 Vamsi Gudivada over 1 year ago in reply to Zane Wei

TI__Guru* 87145 points

Hi Zane,

I can review and get back to you Tuesday next week.

Thanks and regards,

Vamsi

0 Vamsi Gudivada over 1 year ago in reply to Zane Wei

TI__Guru* 87145 points

Hi Zane,

Can you share the linker command file/map file?

Thanks and regards,
Vamsi

0 Vamsi Gudivada over 1 year ago in reply to Vamsi Gudivada

TI__Guru* 87145 points

Hi Zane,

I am closing this post since I did not hear back from you in the last two weeks. If you have further questions, please open a new post.

Thanks and regards,

Vamsi

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280039: Stuck in Fapi_setActiveFlashBank()