TMS570LS1114: Random prefetch abort when writing to flash

Edwin B.

Part Number: TMS570LS1114

Tool/software:

Hello,

when I flash my firmware over CAN to sector 8 (0x40_000 - 0x60_000-1) I get random prefetch aborts. CAN responses stop and when I pause with debugger I see the current position is in prefetch abort. This does not happen every time, sometimes I can flash the whole sector 8 times without any problems. The problem might be connected to the flash driver (F021_API_CortexR4_BE_V3D16.lib) but I'm not 100% sure here.

I checked the fault registers but it didn't lead to anything so far. What I can check further to locate the problem. If it is the flash driver what I can do to prevent the aborts?

Best regards

9 months ago

0 jagadish gundavarapu 9 months ago

TI__Guru 70391 points

Hi Edwin,

I never came across this kind of issue before,

And even i don't have this board to try an experiment on my side, so i am requesting you to setup one live debugging session for my understanding of issue.

I will be available from 10AM to 8PM IST (Indian Standard Time), can you please setup one live demo session for me?

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Thanks & Regards,
Jagadish.

0 Edwin B. 9 months ago

Prodigy 15 points

Unfortunately, this is still a problem and could not be solved in the live session. Would be nice if someone could give me tips on what else to look for here.

Best regards

Edwin

0 jagadish gundavarapu 9 months ago in reply to Edwin B.

TI__Guru 70391 points

Hi Edwin,

Can you please refer below exception troubleshooting FAQ once?

(+) [FAQ] TMS570LC4357: Troubleshooting the Abort Exceptions on Hercules Devices - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

I think we already tried this right? Maybe we are not seeing proper address in R14 register? However, can you refer it again to make sure we are not missing anything.

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Thanks & regards,
Jagadish.

0 Edwin B. 8 months ago in reply to jagadish gundavarapu

Prodigy 15 points

Hi Jagadish,

I saw this FAQ before but the examples show different cases. The instruction fault address in my case points to 0xC and not to a location with my code. The sporadic occurrence makes the search even more difficult.

Is there an older flash driver available for testing?

Best regards
Edwin

0 jagadish gundavarapu 8 months ago in reply to Edwin B.

TI__Guru 70391 points

Hi Edwin,

My apologies for the delay, i was OFF for few days due to festival,

Edwin B. said:
Is there an older flash driver available for testing?

The only other version i could see is that "01.00.00.00", you can get this from below link:

HERCULES-F021FLASHAPI Support software | TI.com

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Thanks & regards,
Jagadish.