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Altera_Forum's avatar
Altera_Forum
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21 years ago

the program doesn't return from interrupt

I'm using the uart interrupt. when data is received trough the uart the program jump to perform the interrupt the problem is that the interrupt flag of the uart stays on and so th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Are we talking SDK or HAL?

HAL:

By default, the HAL ISRs should handle all of the IRQ clearing activity.

SDK:

I'm honestly not sure what is handled and what isn't. I'm sure others will be able to answer this one though.

If you're not using Nios II, then the latter case would apply.

Also, how do you know that the UART is the cause of your problem? Have you set a breakpoint in your ISR to see if that's where the failure is happening?

Cheers,

- slacker