Nios II PS2 Keyboard

In QSYS I added a PS/2 Controller IP Core and wired it in Verilog.

#include <stdio.h># include <stdlib.h># include "system.h"
# include <altera_up_avalon_ps2.h># include <altera_up_ps2_keyboard.h>
alt_up_ps2_dev *ps2;
KB_CODE_TYPE *decode_mode;
alt_u8 buf;
char ascii;
int main()
{
    ps2 = alt_up_ps2_open_dev("/dev/ps2");
    alt_up_ps2_init(ps2);
    printf("Detected device: %d\n",ps2->device_type);
    while (1)
    {
        decode_scancode(ps2,decode_mode,&buf,&ascii);
        if (*decode_mode != 6)
            printf("Decode mode: %d Buffer: 0x%X ASCII: %c\n",*decode_mode,buf,ascii);
    }
    return 0;
}