[AVR] problem in AVRStudio timer interrupt subroutine

[MISU.RSG]

hi dear

I faced with a problem when I work with timers interrupt sub routine.
I used avrstudio 6.2. I wrote this code.

// ***************************** Timer 2 compare Subroutine *********************************
//							Start of function
void ISR (int TIMER2_COMP_vect){
	rsig_on;
	OCR2=pulse_value++;
	
	if (pulse_value==256)
	{	pulse_value=190;
	}
reti();
}
//							End of Timer 0 compare Subroutine

// ***************************** Timer 2 overflow Subroutine *********************************
//							Start of function
void ISR( TIMER2_OVF_vect){
	TCNT2=190;
	rsig_off;
	lsig_off;
}
//                          End of overflow Subroutine

after compiling I saw this error:
Error 2 redefinition of 'ISR'
what's my fault?

 

[KlausST]

Hi,

i don´t know much about C programming...

but in other examples there is no "void" before the "ISR". Could this cause the error?

Klaus

 

[Kurenai_ryu]

yep also

void ISR (int TIMER2_COMP_vect){

there's no need for that 'int' you just need to declare ISR(TIMER2_COMP_vect){ ... }

also, don't use reti(); it's only used when declaring a _NAKED_ interrupt routine, as yours aren't those, the compiler will add the correct instruction to return from the interrupt while restoring the rest of registers from stack...