CCS/TMS570LS3137: The EMAC sample code causes a FlashECC error

shunyun.deng

Part Number: TMS570LS3137
Other Parts Discussed in Thread: SEGGER

Tool/software: Code Composer Studio

When I use the officially provided LWIP sample code, I have no problem using it directly.

But when I enabled FlashEcc in sys_startup.c, initialized the ESM module and enabled the Interrupt，there are some error.

this is the code :

_coreEnableFlashEcc_();
.......
esmInit();
esmSetInterruptLevel(0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF);
esmEnableInterrupt(0xFFFFFFFFFFFFFFFF);

And Then I found that the first load was over without a problem,

But the second time I Debug it, I find that it enters an endless loop of sys_startup.c

Read the ESM_stat3 register to indicate an ESM Group3 Channel7 error.

At this point, I think that this sample code causes a FlashECC error.

My other local programs, which had FlashEcc and ESM capabilities , did not make this mistake, but the same thing happened when I ported the official EMAC sample code.It's going to go into this loop.

So that's my question

Thank you for your help

over 4 years ago

0 shunyun.deng over 4 years ago

Prodigy 190 points

TMS570LS3137 EMAC例程会导致FLASHECC错误 - Hercules™ ARM®安全微控制器 - Hercules™ ARM®安全微控制器 - E2E™ 中文支持论坛 (ti.com)

I also submitted the same question on the Chinese forum

0 QJ Wang over 4 years ago in reply to shunyun.deng

TI__Guru**** 196566 points

Where do you enable the flash ECC in startup.c? Is the ESM flag is set by the selftest?

0 shunyun.deng over 4 years ago in reply to QJ Wang

Prodigy 190 points

The code location is as follows:

0 QJ Wang over 4 years ago in reply to shunyun.deng

TI__Guru**** 196566 points

Tested, it works without ECC error.

Please check the ESM status registers to find which channel is set.

0 shunyun.deng over 4 years ago in reply to QJ Wang

Prodigy 190 points

Thank you for your reply,

I downloaded the demo code again, and the tests found that the problem was there.

this is the git log, the master branch is your original code, then I made the following changes:

1.Modify the emulator type to SEGGER J-LINK.

2.Modify the compiler version TI V18.12.2.lTS to TI V20.2.0.lTS

3.Modify the IP address to be static IP

4.Add the ftest code : flasheccenable end esm set Interrupt，As I said in my last reply.

Then, when I did the second debugging, the problem recurred。

log:

error loop:

The original code:

hercules_examples/hercules_examples - Software Examples for Hercules Processors (ti.com)

I also saw on the forum that I am not the only one who has encountered this problem, and judging from the reply, their problem has not been solved.

Please have a test again. Thank you.

0 QJ Wang over 4 years ago in reply to shunyun.deng

TI__Guru**** 196566 points

Can you please check the value of ESM status registers? I'd like to know which ESM channel causes this issue.

0 shunyun.deng over 4 years ago in reply to QJ Wang

Prodigy 190 points

The screenshot of the problem description page already contains most of the ESM register values.

0 shunyun.deng over 4 years ago in reply to QJ Wang

Prodigy 190 points

Hello, are you still reading this question? I think it may be the problem of EMAC linked list.

0 QJ Wang over 4 years ago in reply to shunyun.deng

TI__Guru**** 196566 points

Hello Shunyun,

I am sorry for late response. I finally replicated the same issue. The ESM 3.7 is set.

The Flash uncorrected error address is at 0x8FD78 which is a blank space with invalid ECC code. One instruction dhcp_start() reads this location accidently, but it doesn't happen every time. The solution is program the ECC for whole flash using linker cmd file.

0 shunyun.deng over 4 years ago in reply to QJ Wang

Prodigy 190 points

Hello QJ，

I'm so glad you repeated the question.

But I still have a few questions：

1.Are you saying that the function DHcp_start () accesses a blank address that does not have a valid ECC code and then triggers the ESM module?Why does this function access this invalid address?Is memory out of bounds?

2.My example program does not run DHCP normally, so I always use static mode. The static mode does not have the function DHcp_start (), but it must show an error every time. So, is the question really caused by DHcp_start ()?

3.Is there an instruction on “program the ECC for whole flash using linker cmd file"？

0 QJ Wang over 4 years ago in reply to shunyun.deng

TI__Guru**** 196566 points

Hello Shunyun,

I am sorry. I am still investigating the root cause. I think programming the ECC for the whole flash won't solve the problem.

0 shunyun.deng over 4 years ago in reply to QJ Wang

Prodigy 190 points

Hello QJ,

I saw you leave me a message saying "Program the ECC for whole Flash doesn't solve this problem".
Are you still studying this question? Besides the three questions I mentioned above, please have a look again. Thank you very much.

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CCS/TMS570LS3137: The EMAC sample code causes a FlashECC error