defining Qsys input on DE0

try this code.

when you run the code, press button / switch.

each return value on PIOi represent condition of button / switch.

try it anyway.

//--------------------------------------------------------------------------------

# include <stdio.h>

# include "system.h"

# include <io.h>

int main()

{

unsigned char PIOi;

PIOi = IORD_8DIRECT(LED_BASE,0);

printf("NiosII's got 0x%02X\n",PIOi);

return 0;

}

//--------------------------------------------------------------------------------