TMS320F28377S: data translation error in cla

coke kou

Dear TI engineers,

Now, I used cla task1\task2\task3 tripped by timer2 to do some calculation. All of these tasks would use a function. The problem would happened in this action.

Before cla task quoted the function named sCla1TaskX, global variable uwCHxx would be assigned a related constant. The related code shown in below pic.

In order to verify uwCHxx translate specified constant, I write a debug logic in sCla1TaskX().

The correct result should be fdebug1==cCH1,fdebug2==cCH2,fdebug3==cCH3. But it is not, in fact. Also, different compiler version caused different result. When I use TI v22.6.0.LTS, if uwCHxx is even num, the result is right. If uwChxx is odd number, value is right but address is wrong. For example, if uwChxx is cCH2(1), fdebug1 would become 1. Correct result is fdebug2 equal 1.

All of variable mentioned above is define in RAMLS4, and initialization shown in pic.

So, could you give me some suggestion？

Looking forward for yours.

coke.

over 3 years ago

0 coke kou over 3 years ago

Intellectual 310 points

So, anyone here?

0 Veena Kamath over 3 years ago in reply to coke kou

TI__Mastermind 32655 points

Hi,

Could you share the generated asm code for these snippets?

Regards,

Veena

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, thanks for your reply. But, what did you mean the asm code? I write cla logic by C code.

bests,

coke.

0 Veena Kamath over 3 years ago in reply to coke kou

TI__Mastermind 32655 points

I meant the compiler generated assembly code. You can enable the following option to keep the asm the file:

Alternatively, you can also view the asm instructions the Disassembly window while executing.

Regards,

Veena

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, when I follow your advise, I found the line num in C file and asm file could be related. I do not know whether it is right. In this way, the related pic shown in below.

bests,

coke.

0 Veena Kamath over 3 years ago in reply to coke kou

TI__Mastermind 32655 points

Hi,

I do not see any major issue with the assembly code. I would recommend you step inside the function for further debug.

Regards,

Veena

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, I connected the cla in ccs. But, it had a mistake like pic shown.

I know cla debug should add __mdebugstop() in program wrote by C from manual.

So, how to debug cla correctly.

best,

coke.

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, I could debug cla code now.

I set parameter named uwCHxx equal 1. Then it would call function named sCla1TaskX. In this function, I write some debug code to confirm whether the parameter value is right. When I do single step debug, I found that it would step into right logic, but value is wrong.

The picture below shown some information.

So, do you have some suggestion?

best,

coke.

0 coke kou over 3 years ago in reply to coke kou

Intellectual 310 points

Hi,

anyone here? Long time no see.

best,

coke.

0 Veena Kamath over 3 years ago in reply to coke kou

TI__Mastermind 32655 points

Hi,

I am looking into this. Will get back to you by tomorrow

Regards,

Veena

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, do you have time to give me some suggestion?

best,

coke.

0 Veena Kamath over 3 years ago in reply to coke kou

TI__Mastermind 32655 points

Hi,

Is it possible to share your project, or a subset of your project so that I could reproduce the issue at my end. I am not able to figure out any issues with the asm code you have shared.

Also, note that if you single step a write instruction and immediately read the register or memory, you may not find the updated value since the pipeline may not have proceeded

Regards,

Veena

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, thanks for your reply.

Veena Kamath said:
Is it possible to share your project, or a subset of your project so that I could reproduce the issue at my end. I am not able to figure out any issues with the asm code you have shared.

The completed code was not easy to send for you because of rule by company. But, if only contain cla code, it maybe have access. So, do you need other part of code?

Veena Kamath said:
Also, note that if you single step a write instruction and immediately read the register or memory, you may not find the updated value since the pipeline may not have proceeded

I did not know this clearly. If a write instruction in front of a read instruction, value would be changed because code was run by sequence.

Best,

coke.

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, could you give me a reply as soon as possible? After that, I could prepare code which you need.

Best,

coke.

0 Veena Kamath over 3 years ago in reply to coke kou

TI__Mastermind 32655 points

Hi,

Apologies for the delayed response. I was out of office.

coke kou said:
I did not know this clearly. If a write instruction in front of a read instruction, value would be changed because code was run by sequence.

What I meant was, in case you do a asm level single stepping, you may not see the actual write if you just step over the write instruction. It would be reflected once the write phase of the CLA pipeline is completed,

Regards,

Veena

0 coke kou over 3 years ago in reply to Veena Kamath

Intellectual 310 points

Hi,

Veena, sorry for late reply. So many work task have troubled me.

I simplify my code of cla. And test yesterday and today. It seems to be well working in my designed.So, I would close this question. If the issue have new discovery. I would consult you again.

Thanks for your kind help.

Best wishes,

coke.

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TMS320F28377S: data translation error in cla