Error interrupt funcition with MPLAB X v5.30 XC8

Question

I am programming a pic18f4550. When I try to compile the project I get two errors.

According to what the console indicates, they are caused by the following function.

void interrupt interupciones()
{
   //do something.
}

The errors are the following:

control.c: 126: 6: error: variable has incomplete type 'void' void interrupt interrupts ()

control.c: 126: 15: error: expected ';' after top level declarator void interrupt interrupts ()

I have tried the following but the error persists.

void __interrupt my_interr(void)
{
  //do something.
}

If I remove the interrupt from the function then the project compiles correctly.

But doing the simulation doesn't work.

Answer 1

In XC8, you need to define interrupts this way (the myISR can be changed to whatever you want):

void __interrupt() myISR(void)
{
    //Do something
}

Provided you are compiling against C99. The old void interrupt myISR(void) syntax is from XC8 2.00 or lower. They changed the way interrupts are defined after that. If you are not compiling against C99, you can also try void interrupt() myISR(void) { ... }.