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Altera_Forum's avatar
Altera_Forum
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16 years ago

Interrupt problem

Hi, I would like to receive interrupts with pushbuttons in uclinux with MMU as I have done before with uClinux without MMU. The problem that I have is that my uclinux doesn't detect inter...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi,

I have solutioned the problem of the last post, the component was wrong sorry.

The problem that I meet know is that my irq enters while the signal is in high level(During 20 ms) and I only want to notice the falling edge of it.I haved configured request_irq with flags:

--- Quote Start ---

IRQF_DISABLED | IRQF_TRIGGER_FALLING

--- Quote End ---

, I also find the command :

--- Quote Start ---

set_irq_type

--- Quote End ---

to force the trigger.

But It doesn't go as I want, it always enters during high level.

Thanks for help