TMS570LS0714: LS0714 dabort question

Huihuang Chen

Part Number: TMS570LS0714
Other Parts Discussed in Thread: HALCOGEN

Hello Champ,

Customer met a issue that when access to ePWM register in ePWM initial function ,like below instruction, The CPU will jump to dabort?

etpwmREG1->TBCTL = (uint16)0U << 7U;

Could you advise the reason ? and how to settle this issue?

over 7 years ago

0 Sunil Oak over 7 years ago

TI__Mastermind 49120 points

Hello,
Is the clock to the ePWM1 module enabled? It is enabled by default, so check if the initialization code is disabling it.

Regards,
Sunil

0 Huihuang Chen over 7 years ago in reply to Sunil Oak

TI__Expert 4010 points

Hello Sunil,

The clock be enabled, could you advise the possible reason?

0 Sunil Oak over 7 years ago in reply to Huihuang Chen

TI__Mastermind 49120 points

Hi Huihuang,

Can you send me a sample CCS code project that shows this issue? I will be able to identify the issue quicker in that case.

Regards,
Sunil

0 Huihuang Chen over 7 years ago in reply to Sunil Oak

TI__Expert 4010 points

Hello Sunil,
This is customer project, any suggestion how to check the reason?

0 Sunil Oak over 7 years ago in reply to Huihuang Chen

TI__Mastermind 49120 points

Huihuang,

Is the initialization code generated by HALCoGen or has it been modified significantly? Follow these steps for debugging this issue:

- Check the status of the PINMMR37 register bit 8. It needs to be set (default) for the clock to be ON to the ePWM1 module.
- Next, check if the VCLK4 domain itself is disabled in the CDDIS register (Clock Domain Disable). This would be bit 9, it must be 0.
- Also check the MPU to make sure that the ePWMx register space is not configured to be non-writable memory space.

Regards,
Sunil

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TMS570LS0714: LS0714 dabort question