16-bit Timer for PIC18F452

[angadaria]

hi i m trying to learn the timer for PIC18F452...please anyone can help me out about how to configure the timer and how to use TMR1L and TMR1H registers...



many thanks
akshay gadaria

 

[errakeshpillai]

hi i m trying to learn the timer for PIC18F452...please anyone can help me out about how to configure the timer and how to use TMR1L and TMR1H registers...
many thanks
akshay gadaria

This pdf file may help you learn the Timers in PIC...
View attachment PIC Microcontrollers An Introduction to Microelectronics 2e.pdf

Also one of the previous Edaboard thread might help you..
What is the procedure for PIC timer0 to generate a 1 ms or 1 sec interrupt?

 

[bigdogguru]

Here are a few tutorials which cover the PIC18F timer modules:

Introduction to PIC18′s Timers – PIC Microcontroller Tutorial

Microchip Timers: Timer0 Tutorial (Part 1)

Microchip Timers: Timer0 Tutorial (Part 2)

YET ANOTHER TIMER TUTORIAL

Tutorial 1-PIC Timer Programming In C

Lab 7: PIC Timers and Counters (Part 1)

Timer0 Programming

BigDog

 

[angadaria]

hi thank you for your suggestions both of you..
accordingly i tried to write the basic code on my own just to check the overflow of the timer but it is not working. timer overflow flag is not getting set.
i m using PIC16F877A with 8MHz frequency and i m using MikroC PRo for PIC IDE. can u please check the code and let me know what is the error or what is missing?

void main()
{
TRISC=0x00; //configure port c as an o/p port
while(1)
{
PIE1=0x01; //enables the timer1 overflow interrupt
PIR1=0x00; //clear the timer overflow flag
INTCON=0xc0; //enables the global and peripheral interrupt
T1CON |=(1<<TMR1ON); //start the timer
while(TMR1IF==0); //polling the overflow flag
PORTC=0x55;
PIR1=0x00; //clear the interrupt flag
}
}