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Altera_Forum
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12 years ago

uclinux PIO device driver interrupt handler not execute

Hi, Thanks in advance for any help I can get. I have a NIOS2 w/MMU running uClinux v3.7. It's a DE2-115 development kit with Cyclone IV FPGA. I use the PIO megafunction to monitor input rising ...
Altera_Forum's avatar
Altera_Forum
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12 years ago

Hi Kazu,

You are right. I have left out the virtual memory to be part of the base address. After I included the MMU, the interrupt handler function trigger when there is a rising edge. You have mentioned there is a formal way to set and reset the ienable and status register without implementing directly into the control registers. Which function call are you referring to?

I apologize for another dope question regarding clearing the interrupt flag. Do I have to clear the "edge_capture" register in the interrupt handler function?

*(ALTERA_BASE_ADDRESS + 0x03) = 0x00

Thanks again,

Yeung