[SOLVED] 2 7-segment display in proteus

[fawadbutt]

hi i write the code 2 seven segment code in C,
i test on proteus 6.9,
fluctuating in display,
i m use
for(a=0;a<1275;a++)for(b=0;b<5;b++);
timing.
plz solve my proble.

 

[pmar_kpj]

hi!

i do not understand what you mean! if you need a delay use delay_ms(miliseconds) function!

 

[fawadbutt]

i m use keil ,
i m using for loop for delay,
i mean that what i use proper function to 2 digit can be still display?
and thanx for replay!

 

[incomplete_jerin]

For delay in Keil you can use for functions for the delay sub routine.
Here is an eg:

char i;
for(i = 0;i< 1000;i++);

The no: of time you increase the value of 'i',the delay will be that much longer.
Regards,
Jerin. ;-)

 

[pmar_kpj]

hi !

char i; is not good because is 8 bits values (max 255) ! you need to use a integer type !

 

[fawadbutt]

how i make 1 sec delay loop in C,

 

[incomplete_jerin]

If you are using MikroC compiler,
then write the code,
Delay_ms(1000); to get 1 sec delay.
Else you'll have to calculate the no: of times the for loop have to be executed to get a period of 1 sec as explained above.
Regards,
Jerin. ;-)

 

[Tahmid]

Hi fawadbutt,
In mikroC, it'd go like:

   delay_ms(1000);

In keil, I don't know about the library functions.
As for for...loop,
With XTAL freq=10MHz,

void MSDelay(unsigned int itime)
{
   unsigned int i; unsigned char j;
   for(i=0;i<itime;i++)
      for(j=0;j<165;j++);
}

Now just call MSDelay(1000);

Hope this helps.
Tahmid.

 

[incomplete_jerin]

The no: of times you call a for loop depend on the instruction speed of the controller i.e how much time it takes to execute 1 instruction. It may be in most probably us to ns range. So to get 1 second delay we have execute that much times the for loop instruction which is to found out by us. Tahmid has shown you one example of how to generate 1 sec delay with for loop.
Regards,
Jerin. ;-)