Hello,

I'm using a fusesoc system on an Altera Cyclone IV FPGA.
I implemented a third gpio module to control different additional modules with a C-program.
(This works fine.)

Now I want to read out the input (one bit) of the gpio with the C-progam (and print it on the screen for example).
How can this be done?
Is there a simple C-function to read this input?

Best regards,
Jonathan

I got some sample code that I intended to use as some kind of driver/example, but never got around to clean it up. Since it's a pain to paste code into this forum I'll just give you a link to an archived copy https://www.dropbox.com/s/f12dy332tomo36w/gpio_driver.tar.gz?dl=0

Hope this helps,
Olof

Thanks, this helped a lot. It's working now.