TMS320F28377S: the problem of switching tasks in an interrupt program while running UCOS ii

Bingo Wu

Hi.

I port ucos-II programs in TMS320F28377S,find that if I switch tasks in the interrupt ISR (e.g., perform OSQPost() in timer0 ISR to get task A ready and switch to task A), the next time Timer0 ISR will not respond until task A has been executed.

I think the reason which prevented the entry of the next interrupt is that time0 ISR did not complete when switching task A-------The instruction "asm(" TRAP #16")" in OSIntCtxSw() will be executed directly even if the global interrupt is masked(INTM = 1).

How can I solve this problem?

over 5 years ago

0 Bingo Wu over 5 years ago

Prodigy 170 points

2.If I enable interrupt nesting in Timer0 ISR( IER |= M_INT1;PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;), will the next time0 ISR be responded again before the time0 ISR is finished executing?

0 KARTHIKEYAN RAJAMANICKAM over 5 years ago in reply to Bingo Wu

TI__Genius 11645 points

We may not have expertise with UCOS ii, can you pls check with uC/OS-II support forums.

0 Bingo Wu over 5 years ago in reply to KARTHIKEYAN RAJAMANICKAM

Prodigy 170 points

Hi:

thanks for your reply,Karthik.

If I enable interrupt nesting in Timer0 ISR( IER |= M_INT1;PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;), will the next time0 ISR be responded again before the time0 ISR is finished executing?

0 Marlyn Rosales Castaneda20 over 5 years ago in reply to Bingo Wu

TI__Mastermind 27040 points

Hi,

Please refer to this page that explains interrupt nesting in detail

Best Regards,

Marlyn

C2000™︎ microcontrollers

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TMS320F28377S: the problem of switching tasks in an interrupt program while running UCOS ii