Hello ,
i am working on simple project ,in project few components are there like
Atmega32,
led ,
buzzer,4 push button (2 for set time up,down with +15 or-15 min time slot) (2 for set intensity up down in range 0-5)
by these 4 push button i am generating 2 values in different variable.
After setting this both time and intensity value i had save these in 2 different integer x,y( x for time)(y for intensity)
so the problem is i want to glow Led depends on value of x & y

and at last stage before time goes out for 5 sec want to on buzzer ,
and how we no that last 5 second are remaining so we want to on buzzer ??
what kind of logic need to apply for this condition??

 

Just thinking aloud.............

Can you break the time variable into 2 parts, one that contains total time less 5 seconds & one that contains just 5 seconds, count\monitor the first value, when that expires turn the buzzer on the count the second value down.

Tho you would have to allow for a condition where the time set is less than 5 seconds, if the time can be set less than 5 seconds. I guess you're using PWM for intensity ?

yes i am using PWM for intensity ..but the problem with only timer ...i think i want to set timer according to counter..then count that pulse up x value , and at last 5 sec buzzer will on.....is it like this??

 

is it like this

You should probably step back and see how to fit what you are trying to do within the confines of your target.

 

Time to draw a flow diagram.