How to access Pins from HPS (In Linux)?

Hi ,

You can enable the FPGA2HPS bridge in the Qsys and then use the peripheral pin multiplexing technique to access FPGA data through GPIO in HPS.

Please refer to Connecting Unassigned Pins to GPIO

section in the below document

https://www.intel.co.jp/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-v/cv_5v4.pdf

also the below link from terasic can also help in understanding about the bridges., between HPS and FPGA.

http://www.terasic.com.tw/wiki/DE10_Advance_revC_demo:_AXI_bridges_in_Intel_SoC_FPGA

The following video can also help to get a start

https://www.youtube.com/watch?v=RTmDgNXIwKQ

Please let us know the progress.

Thanks and Regards

Anil