TMS570LS3137: ccmSelfCheck() test on TMS570LS3137

Kalyan Vagvala61

Part Number: TMS570LS3137
Other Parts Discussed in Thread: HALCOGEN

Hello,

I have a doubt regarding the ccmSelfCheck() code generated by HALCOGEN version 4.7:

Below is the set of instructions in ccmSelfCheck(), why should we check the FIQINDEX for error-forcing mode ccm self test?:

/* Check FIQIVEC to ESM High Interrupt flag is set */
if((vimREG->FIQINDEX & 0x000000FFU) != 1U)
{
/* ESM High Interrupt flag is not set in VIM*/
selftestFailNotification(CCMSELFCHECK_FAIL4);
}

Thanks,

Kalyan

over 6 years ago

0 Sunil Oak over 6 years ago

TI__Mastermind 49120 points

Kalyan,

A CCM error is mapped to ESM group2, which asserts the nERROR pin and also generates a non-maskable (FIQ) interrupt to the CPU. The code segment you pasted is checking if the FIQ request is indeed flagged in the interrupt manager.

Regards, Sunil

0 Kalyan Vagvala61 over 6 years ago in reply to Sunil Oak

Expert 1075 points

Hi Sunil,

Thanks for your response. Since the esmHighInterrupt is mapped to only channel 0, can i use below condition in CCM self check?

if((VIM_REG->fiq_index & 0x00000001UL) != 1UL)

Thanks

Kalyan

0 Sunil Oak over 6 years ago in reply to Kalyan Vagvala61

TI__Mastermind 49120 points

Yes, you can modify the condition check if you are only checking for the ESM interrupt request. Please note that the interrupt channel mapping is also programmable via the VIM CHANCTRL registers, so you will need to update this condition check if you remap the ESM interrupt request to another VIM channel.

Regards,

Sunil

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TMS570LS3137: ccmSelfCheck() test on TMS570LS3137