TMS320F280049: Nested Interrupt on TMS320F280049

Selec Controls1

Part Number: TMS320F280049

Hello,

In case of a nested interrupt in the same group, we have observed a possibility that the interrupt does not return to the previous interrupt (which it was servicing) after servicing the nested interrupt.

Please advice on this problem.

Regards,

Rishabh P.

over 4 years ago

+1 MatthewPate over 4 years ago

TI__Guru* 80520 points

Rishabh,

I will refer to this wiki article to make sure the steps are being followed under the 1st nesting example. You will see in step 3 there is mention of a 1 cycle delay between clearing the PIEACK and clearing the INTM bit, please make sure this is observed. https://software-dl.ti.com/C2000/docs/c28x_interrupt_nesting/html/index.html

If there is still an issue after looking at the above, I would suggest you to post the ISR handler in question as well as the interrupts that are being nested/active so we can evaluate the nesting code. If there are other interrupts enabled that are in a higher priority group it would be possible those would get serviced 1st even if they came in later.

Best,

Matthew

0 Selec Controls1 over 4 years ago in reply to MatthewPate

Intellectual 280 points

Thank You,

The issue got resolved.

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TMS320F280049: Nested Interrupt on TMS320F280049