How can I beep every 00:00 ?

Guys,

I created a clock using DS1307,
How can I beep it everytime it's reaching zero ?

I have created:

Any ideas ?
thanks

You can't compare a string like that, you have to check each character individually


- - - Updated - - -

by the way "minute" and "second" represent the address of the first character of the array , the same as "&minute[0]" and "&second[0]"

I think the second and minute are integer or char variables they cant be a stiring because they are assigned in the above statement so
the exact code shd be

like this ?
thanks

Venkadesh_M said:

I think the second and minute are integer or char variables they cant be a stiring because they are assigned in the above statement

Click to expand...

That may be so but in the given code there is no definition of these variables and there is a num2str function, if that function doesn't return a string then why is it named like that?

Code:

minute = num2str(ds1307_addr[1]);
second = num2str(ds1307_addr[0]);

Click to expand...

yeah but what are you going to do in beep sound function?? If you just enabled buzzer then It will beep continuously after match 00, so add a else case to make it reset...
or do the both in the beep sound function......

- - - Updated - - -

alexan_e said:

That may be so but in the given code there is no definition of these variables and there is a num2str function, if that function doesn't return a string then why is it named like that?

Click to expand...

I didnt look on the function names but if it is a function which returns char pointer and second and minute are char pointers then surely it will be like element checking as you mentioned, but the code shown in #4 shd work fine...