Mikro C pro code help

[akter]

i m new in microcontroller, please help me,
i want to add another condition like this

if PortA=0x0F for 20 Seconds then Portd.f1=0;

otherwise everything will remain same.
please any one help me.

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Code C++ - [expand]
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void main()
 
 
 
{
 
 
  CMCON = 0x07;
  ADCON1 = 0x06;
  
  TRISA = 0x0F;          //  input
  PORTA = 0x00;
 
  TRISD = 0x80;          //  output
  PORTD = 0x00;
 
 
 
 do
 
  {
 
 
   if(PORTA == 0x0F)
 
   {
       PORTD.F1 = 1;
    }
 
 
 
   else if(PORTA == 0x00)
   {
       PORTD.F1 = 0;
   }
}
while(1);            // Endless loop
}

---

 

[horace1]

I have a timer running (usually 1mSec interrupts) and a function with prototype

// retrun true if  time in mSec has elapsed   - reset to start if reset is true
int mSecElapsed(const int reset, const long unsigned int time)

then the code would be something along the lines of

mSecElapsed(1,0);     //reset timer
// wait 20 seconds if PortA = 0x0F
while ((PortA==0x0F) && !mSecElapsed(0, 20000)) ;
// if 20 seconds elapsed and PortA = 0x0F
if((PortA==0x0F) && mSecElapsed(0, 20000)) 
   Portd.f1=0;

I am sure the logic can be improved with a bit of thought!

do you want to do anything else while waiting for the 20 seconds?

or would this work?

mSecElapsed(1,0);     //reset timer
while(1)
{
if(PortA!=0x0F)
   // PortA !=0x0F  reset timer etc
   { mSecElapsed(1,0);   Portd.f1=1; }
else
   // if 20 seconds elapsed and PortA = 0x0F
   if( mSecElapsed(0, 20000)) 
         Portd.f1=0;)
...     // do other things

}

 

[akter]

thank you very much