TMS570LS3137: about Register check

whong zhao

Genius 4190 points

Part Number: TMS570LS3137

Hello

I use this code in loop

Reg_Read_Compare(RTI,REBASELINE);

retVal = Reg_Read_Compare(RTI。OMPARE);
INCREMENT_PASS_FAIL_COUNTER(ST_PASS, retVal);

if after this code “Reg_Read_Compare(RTI,REBASELINE);”RTI interrupt function break，and execute rtiREG1->CMP[2U].UDCPx = 20000 change the rtiREG1->CMP[2U].UDCPx

and return execute this “

retVal = Reg_Read_Compare(RTI。OMPARE);
INCREMENT_PASS_FAIL_COUNTER(ST_PASS, retVal);” Is the verification failed?

over 5 years ago

0 QJ Wang over 5 years ago

TI__Guru**** 200656 points

Hi Whong,

I didn't get exception after I called Reg_Read_Compare(RTI,REBASELINE).

I will do more test, then come back to you later.

0 whong zhao over 5 years ago in reply to QJ Wang

Genius 4190 points

Hello

Thank you

In principle, the test should be inconsistent

0 whong zhao over 5 years ago in reply to QJ Wang

Genius 4190 points

Hello

Is there a result?

0 QJ Wang over 5 years ago in reply to whong zhao

TI__Guru**** 200656 points

Did many test, did not get exception.

Reg_Read_Compare() only reads the registers' value, and compares with the baseline value. It will not affect other functions' execution which uses the RTI registers' value.

0 whong zhao over 5 years ago in reply to QJ Wang

Genius 4190 points

Hello

thank you

if after this code “Reg_Read_Compare(RTI,REBASELINE);”RTI interrupt function break,and change the rti registers. this code rtiREG1->CMP[2U].UDCPx = 20000.and execute Reg_Read_Compare(RTI,COMPARE); so I think the RTI registers' value is changed.and Reg_Read_Compare(RTI,COMPARE) Check failed.Do I understand right?Did your test do this？

0 QJ Wang over 5 years ago in reply to whong zhao

TI__Guru**** 200656 points

Yes, the register's value is changed between: Reg_Read_Compare(RTI,REBASELINE) and Reg_Read_Compare(RTI,COMPARE).

1. Reg_Read_Compare(RTI,REBASELINE)

2. Interrupt ISR to change the RTI register: UDCPx

3. Reg_Read_Compare(RTI,COMPARE): --> will return FALSE and get into a while() loop, but will not generate exception

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TMS570LS3137: about Register check