TMS570LC4357: TMS570LC4357

dhana lakshmi1

Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN

I am working on PBIST and STC modules on TMS570 microcontroller. Both the self tests are planned to execute during startup only.
Both the tests are working fine when tested one at once.
But when PBIST SRAM(L2RAMW) test is called before STC test, stc test WFI instruction is not working and not entering idle mode (does not kick start the stc self test).
It works when stc module called first.
All interrupts are disabled and esm faults are cleared and re-called memory function _memInit_.
Could you please help if i am missing anything. Or is it mandatory to restart after PBIST SRAM test.

over 3 years ago

0 QJ Wang over 3 years ago

TI__Guru**** 186196 points

Before running STC self-check, please make sure that the pbist test is completed, and call pbistStop() to disable PBIST clocks and disable memory self-test mode.

BTW, there is a bug in pbistStop() which is generated by HALCoGen.

https://e2e.ti.com/support/microcontrollers/hercules/f/hercules-safety-microcontrollers-forum/907541/tms570ls0432-pbist-rom-test-has-unexpected-influence-on-stc/3355586?tisearch=e2e-sitesearch&keymatch=pbistStop%2525252528%2525252529#3355586

0 dhana lakshmi1 over 3 years ago in reply to QJ Wang

Prodigy 120 points

Hi Wang,

Thank you for the suggestions. The pbistStop() bug was already taken care still i was facing the issue. And i found calling below pbist status checking in a function causing the issue. STC WFI issue is resolved when i put this below code as is and not placing in a function and return the status.

while((systemREG1->MSTCGSTAT & 0x1u) == 0x0u);

if ((pbistREG->FSRF0 == 0u) && (pbistREG->FSRF1 == 0u))
{
/* PBIST pass */
}
else
{
/* PBIST fail */
while(1);
}

0 QJ Wang over 3 years ago in reply to dhana lakshmi1

TI__Guru**** 186196 points

Hi Dhana,

Do you mean that calling a function like "while(pbistIsTestCompleted() != TRUE)()" caused the problem?

Just noticed that I posted a wrong image in my previous post. I am sorry for that.

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TMS570LC4357: TMS570LC4357