DE10-Standard reading states of switches by HPS

[Bruno812]

Hi,

I struggle with reading the states of switches by HPS on the DE10-Standard development kit. Recently I managed to create a design that manipulates LEDs from the HPS side, so I am familiar with the whole process of placing Linux on a microSD card, etc. In the LED project, I used a PIO that was directly connected to the HPS2FPGA lightweight bridge.
Here is my C code for the LED project (PIO name is NARX_input):

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/mman.h>
#include "hps_0.h"

#define REG_BASE 0xff200000
#define REG_SPAN 0x00200000

void *base;
uint32_t *out_HPS;
int fd;

void handler(int signo)
{
    *out_HPS=0;
    munmap(base, REG_SPAN);
    close(fd);
    exit(0);
}

int main()
{
    fd=open("/dev/mem", O_RDWR|O_SYNC);
    if(fd<0)
    {
        printf("Can't open memory.\n");
        return -1;
    }
    base=mmap(NULL, REG_SPAN, PROT_READ|PROT_WRITE, MAP_SHARED, fd, REG_BASE);
    
    if(base==MAP_FAILED)
    {
        printf("Can't open memory.\n");
        close(fd);
        return -1;
    }
    out_HPS=(uint32_t*)(base+NARX_INPUT_BASE);
    signal(SIGINT, handler);
    *out_HPS=0x0;
    while(1)
    {   
        usleep(1);
        *out_HPS = 0b000001000000000000000001;
        usleep(1);
        *out_HPS = 0b000010000000000000000010;
        usleep(1);
        *out_HPS = 0b000011000000000000000100;
        usleep(1);
        *out_HPS = 0b000100000000000000001000;
        usleep(1);
        *out_HPS = 0b000101000000000000010000;
        usleep(1);
        *out_HPS = 0b000110000000000000100000;
        usleep(1);
        *out_HPS = 0b000111000000000001000000;
        
    }
}

I understand that I need to use the FPGA2HPS bridge. How do I prepare the right Platform Designer file and modify my C code to do this?

Thanks in advance.