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Altera_Forum's avatar
Altera_Forum
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20 years ago

a weird issue

Hi all, I encountered a weird issue that I enabled one PIO interrupt by using: alt_irq_register(STROBE_PIO_IRQ, edge_capture_ptr, command_receive_interrupt); STROBE_PIO_IR...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

just an update.

I have 5 interrupts, so I tried to modify the interrupt level,

When I tried:

module interrupt level

lcd controller 0

video_0 1

video_1 2

strobe 3

jtag_uart 4

the strobe interrupt can't enable due to the reason above.

when I tried:

module interrupt level

lcd controller 0

video_0 1

video_1 2

strobe 4

jtag_uart 6

the video_1 interrupt can't enable due to the reason above.

when I tried:

module interrupt level

lcd controller 0

video_0 2

video_1 3

strobe 5

jtag_uart 7

the video_1 and jtag_uart interrupts can't enable due to the reason above.

when I tried:

module interrupt level

lcd controller 0

video_0 2

video_1 4

strobe 6

jtag_uart 8

All the interrupts are enabled and everything is OK.

I think it's a very wierd issue, maybe someone can help me with the interrupt architecture of NiosII. Do anyone know about that in which condition the ienable register will be modified or can't be wrote?

Thanks any help,

David