How would I go about adding a delay to just one part of my project instead of the whole code. I know how to code in a delay, just not specific to a certain part. I have a relay activating on say 23c and deactivates 27c.
After the relay activates, once it deactivates, how do I add a delay to just reactivating the relay, but the sensor still continue to pull temp and display on the screen? Say it deactivates, wait x amount of time before allowing it to reactivate while still performing all other functions.
Thanks

 

Delay routines provided as high-level instructions to the compiler are of the devil. Don't use them. Set up a periodic interrupt running at (say) a few kilohertz. Any time you need a delay, set a counter and count it down in the interrupt, then set a flag saying "Perform the action now" when it reaches zero. Meanwhile your main() routine is running in a loop, doing the sensing and display stuff that's required and also checking the flag, ready to perform the action when the flag is found to be set.

 

while(1)
{
temp=check_thermistor();
disp_temp(temp);
 
if(temp==23 && wait_timer)
 relay_on=1;
 
if(temp==27)
 relay_on=0;
 start_timer();
 wait_timer=0;
 
if(timerinterrupt==1 && wait_timer=0)
 wait_timer=check_timer();
}