PIC18 TIMER1 AND IT'S INTERRUPTS

[RandyB]

PIC18 TIMER1

I am using a PIC18F24K20 and would like to know how to set up Timer1 and the interrupts. Does someone have an example I can work from?

 

[wp100]

Hi,

In what language - Assembler, C ..?

Are you trying to make a RTC .. ?

 

[RandyB]

I am working in C. I would like to use the to have an interrupt every ms.

 

[wp100]

Hi,

Afraid I only do Assembler - have sent you some info by PM that might help.

 

[Tahmid]

Hi RandyB,
This code is for mikroC(v8.2):

//mikroC v8.2
//Programmed by Tahmid
//Clock: 20MHz (HS)
//Using TMR1 for interrupt generation every 1ms

void interrupt(){
     PORTC.F0 = ~PORTC.F0; //Toggle RC0
     TMR1H = 0xEC; //Reload Timer
     TMR1L = 0x78;
     PIR1.F0 = 0; //Clear flag
}

void main(void){
     TRISC = 0; //Set PORTC for output
     PORTC = 0;
     INTCON = 0xC0; //Enable GIE and PIE
     PIE1.F0 = 1; //Enable TMR1 interrupt
     T1CON = 1; //Start TMR1
     while (1);
}

Hope this helps.
Tahmid.