stopwatch with AVR

[matin]

hi everyone, could you please add a pause button to this?
I really appreciate it.
I uploaded two files one is a video from the microcontroller operating (stopwatch.rar)

 

[Harald Kapp]

@matin : Unlikely anybody is going to load the full project and analyze it. Also code alone will not suffice to add a pause butto. You'll need to add it in hardware, too. Therefore:

1. show us a schematic diagram of your circuit and wehre you want to add that button.
2. show us the relevant code directly in a code box
   
   
   
3. Make yourself familiar with de-bouncing.
4. Give us a hint where the pause button should be added and what action it should trigger in the code.

 

[matin]

the only problem is that I only know the basics of coding so I cant do it by myself
I guess I should use port D of the microcontroller and interrupts
here is also the schematic

 

[matin]

I found this code but it uses atmega32 but I have only atmega16

 

[Harald Kapp]

Physically connect the pause button in the same way as the other two button. Use e.g. PD2, so you can use the interrupt INT0 to pause the counter.
I tried to load your code. I get an error when loading the project
Anyway I managed to read the C source file "gfuhgj.c" Where did you get it from? It is so ugly formatted no comments to explain what's going on, cryptic filenames ...
"delay()" is used for timing: doesn't make for a precise stopwatch.
Regardless of that: to pause the counter you can insert this code (replace the existing code without if:

while (1)
    {
    ww();
    dg();
    if(PIND.2==1)
       sd();
    }

Then the counter will pause while the pause button is pressed.