CCMR4 self-test

Vaclav Cechticky

Other Parts Discussed in Thread: HALCOGEN

Hello,

I have suddenly difficulties to reproduce results of the CCMR4 self-test. The 8th bit for the CCM-R4F status register (CCMSR) is not set, which would mean that the self-test is not completed.

I've updated my code with newly generated code base from HalCoGen 3.00.01, which shouldn't be and the issue because even the former version of my software has difficulties this particular test now.

Any idea why this happened? I cannot believe that hardware is defect.

// Setting the Self-test mode
CCMR4Reg->CCMKEYR = 0x00000006;

 // Waiting for STC flag (Self-Test Complete)
while ((CCMR4Reg->CCCMSR & 0x100) != 0x100);

Thank you

Vaclav

over 13 years ago

0 Prathap over 13 years ago

TI__Genius 14205 points

Are you in Debug mode while running this selftest? I think CCM Self test cannot be run in debug mode.

Try the same test by flashing the code disconnect the debugger and hit reset to run.. You can have some pin toggle just to make sure the test has completed.

Best Regards
Prathap

0 Vaclav Cechticky over 13 years ago in reply to Prathap

Intellectual 560 points

Hi Prathap,

I was running the CCM Self Test for several months without any problem, in non-debug mode. I just observed strange degradation of the whole test sequence. First failed the Error Forcing Test, now also the Self Test and also Self Test Error Forcing Test. I'm still investigating the issue ...

Regards

Vaclav

0 Vaclav Cechticky over 13 years ago in reply to Prathap

Intellectual 560 points

Hi Prathap,

I just found the bug in my code. I apologize for confusion and thank you for help.

Regards

Vaclav

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CCMR4 self-test