How to use the niosii interrupt service program

[Altera_Forum]

How to use the niosii interrupt service program,where are there example???

[Altera_Forum]

Please see the count_binary example. It registers an interrupt handler for the buttons which change the way it counts.

[Altera_Forum]

thank!!!!!

[Altera_Forum]

i use this example but the interupt can not responde 

when i press the button but the led can not change

[Altera_Forum]

please tell a little bit more, 

what version of quartus, nios, hardware are you using  can you start the proram in debugger ? can you set a breakpoint in the interrupt ? does it enter the interrupt routine ?  static void handle_button_press(alt_u8 type, FILE *lcd) {  /* Button press actions while counting. */  if (type == &#39;c&#39;) // <-- set breakpoint here