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Altera_Forum
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10 years ago

Hardware interrupts from FPGA to HPS

Hi, I have data bus that I want to send to a PC each time we get an interrupt from FPGA module (maximum interrupt frequency is 1MHZ and the throughput should be 8 Mbytes/sec) through Ethernet. I...
Altera_Forum's avatar
Altera_Forum
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10 years ago

Thank you for quick response.

I'm able to see interrupts like spi, eth, uart, etc(cat /proc/interrupts in Yocto). But I don't know how to get GPIO interrupts (from what I've understood located from 72 to 135).

After the qsys and Quartus compilation what steps I have to do to make GPIO interrupts work?

Should I create/edit device tree and how? How should I create uboot file(using bsp tool or I must use bitbake command to generate it)? Should I create new preloader or I can use preloader which is provided with Altera examples? Should i download Yocto source and compile it with bitbake and load the compiled kernel to sdCard?(could this be avoided?) should I write a driver for linux to be able to see the interrupt and should I compile it the new linux kernel?

I know it's a lot of questions but after trying most of those things and reading forms and youtube videos, I'm confused...

Until now I didn't find any good explanation what should be don't to create hardware interrupt.

I would be very glad to get some help.

Thanks in advance

Boris