Counter and Interrupts

[ZaeemAhmad]

Using 8051, how can I achieve the following thing:

During the normal execution of a code (in an infinite while loop), I am simultaneously counting pulses from Timer 1 and as soon as the count reaches a particular value, I want to stop the normal execution of program (i.e. the while loop and call an interrupt) and go to a particular code (probably a custom interrupt handler)?

Thanks!

 

[ravi1488]

Yes, you can do that. continously read the value of the timer in the while loop. As soon as it reaches set point call another function.

 

[ZaeemAhmad]

Thanks brother! Another question: Can the counting go faster than the execution of a single line of code (e.g. count increases by 10, but only one assembly line code is executed by that time). What to do in that case? Can I use some kind of interrupt for that situation, because I want to terminate the loop at some exact count of the counter?

 

[ravi1488]

what is the speed of the pulses? like 200 pulse per second.. You can use an external interrupt to count pulses. So you can easily program it to stop the count at exact number.

---------- Post added at 04:09 ---------- Previous post was at 04:07 ----------

count() interrupt 0
{
pulse++;
if(pulse >= setpoint)
required_function();
}
// you can write like this