Help how to use avalon interface

Hi everyone,

I'm using a DE1-SoC board.

I'd like to transfer data from FPGA to HPS and I have to use the avalon interface but I never used this interface. Anyone can have some document or example?

My project consist in acquire data from the FPGA pins and then send data in a SDRAM that is shared with the HPS and finally send to the PC throught the ethernet interface.

Anyone can help me?

Thank you

Gianluca