TMS320F280041: Question on prevent an ADC interrupt overflow

Sheldon He

Part Number: TMS320F280041

Hi Vivek,

I'd like to ask some question based on this thread: https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/750511?TMS320F280041-F280041-ADC-Interrupt-Overflow-Issue#pi320995=1

Regarding your reply to Ricky, you suggest us to clear INT1E before clear ADC interrupt and ADC INT overflow flag, after that set this bit to high.

Could you help me understanding the reason behind? It do works but I think in this circumstance not ADC INT overflow flag will be set. Is my understanding right?

My customer meet the same problem and would like to know the mechanism.

Thanks!

over 6 years ago

0 Vivek Singh over 6 years ago

TI__Guru** 115191 points

Hi,

Please refer section " ADC: Interrupts may Stop if INTxCONT (Continue-to-Interrupt Mode) is not Set" in this document. This is ERRATA document for a different device but applicable to this device as well.

Regards,

Vivek Singh

0 Sheldon He over 6 years ago in reply to Vivek Singh

TI__Expert 8585 points

Hi Vivek,

Since this issue is also on F280049, will this item be added in future silicon errata?

Thanks

Sheldon

0 Vivek Singh over 6 years ago in reply to Sheldon He

TI__Guru** 115191 points

Yes Sheldon, it'll be added in next release of the document.

Regards,

Vivek Singh

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TMS320F280041: Question on prevent an ADC interrupt overflow