About interrupt.

[alcidesramos]

Hello in timer1 example show.

Code: Select all

procedure Timer1Int(); iv IVT_TIMER_1; ilevel 7; ics ICS_SRS;
begin
  T1IF_bit := 0;             // Clear T1IF
  LATB := not PORTB;         // Invert PORTB
end;

and the mail program put the new the priority 7:
T1IP0_bit := 1;            // set interrupt
  T1IP1_bit := 1;            // priority
  T1IP2_bit := 1;     

it is necesary define in the procedure and the mail program.


i can put only in tha main program?


thank you.


Kind regard.

[filip]

Hi,

Yes, you can put the interrupt routine in some other unit, just tested it.

Regards,
Filip.

[jpc]

Filip,

i think you did not understand the question ( maybe i do not either) but the way i read this is : why is it necessary to set the priority-level of an ISR in the initialisation as this is already part of the ISR declaration as produced by the interript assistant.
The way i see this is that this Ilevel is only there to inform the compiler at what interrupt priority this ISR will be operating in order to allow correct handling, the actual priority has to be set by the code and it is the programmers responsability to guarantee that the 2 correspond, correct me if i am wrong please.