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PIC18F452 Timers/Counters Interrupts,...

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bobx

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Hello everybody.I want to write a program using PIC18F452&XTAL=20MHZ in C or mikroC to do the followings;

1.Simultaneously turn a timer on[timer0 or...] to count for 1 sec. and
also count the number of High[transition from H to L] state of the
input signal.

2.Turn a timer on[timer0 or...] for 1 sec. and as soon as a input signal injected or entered to a PIC pin the timer[timer0 or...]immediately turned off and calculate the time of passed by that timer.

Would you please help and give me some example codes to write those programs?

Thanks,:?:
 

Here's examples of interrupt and timer use:

PIC Interrupts - Part 1

PIC16F877 Timer Modules tutorials

Introduction to PIC18′s Timers

**broken link removed**

The above examples are have similarities to both your scenarios.

Scenario 1 uses an external interrupt edge transition or external clock input and timer overflow interrupt.

Scenario 2 uses an external interrupt edge transition and timer overflow interrupt.

Hope the info helps in your endeavors.
 

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