8147 lost interrupt

ting zhang76616

Prodigy 90 points

Do anybody meet this:8147 lost hwi?

I use edma to copy data,but sometime cann't get edma complete interrupt to release semphore,so dsp will blocked.

In which situation can 8147 lost hwi?

over 13 years ago

0 ting zhang76616 over 13 years ago

Prodigy 90 points

somebody help me ,thank you

0 Andrew Elder over 13 years ago

Expert 1680 points

I don't think it is a good idea to use semaphores inside a HWI.

0 HardikShah over 13 years ago in reply to Andrew Elder

TI__Mastermind 20245 points

Hi,

Semaphores can be used in HWI, you can only post a semaphore in HWI, you cannot pend on semaphore on HWI since it may sleep, and which in turn can create a deasdlock of the system.

Regards,

Hardik Shah

0 ting zhang76616 over 13 years ago in reply to HardikShah

Prodigy 90 points

I think so.

but I cann't understand HWI just be losted

0 Andrew Elder over 13 years ago

Expert 1680 points

Does it sometimes work ?

0 ting zhang76616 over 13 years ago in reply to Andrew Elder

Prodigy 90 points

yes , it happened occasionally, and work normal most time

0 Andrew Elder over 13 years ago in reply to ting zhang76616

Expert 1680 points

Can you post the code for you EDMA HWI ?

Are you using a loop to check the IPR flags before you exit the HWI routine ?

At what rate are the EDMA HWI occurring ?

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8147 lost interrupt