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i want to get input state from port A( on/off), if on the down counter start from letting all 4 LED's and soon, then the program loop itself back after all Led is off (or count zero)... if the state if off ( it holds the Led's state )....

here is my work program....


CODE:
void main() {
  int i=0;
  PORTB = 0;
  TRISB = 0;           // PORTB is output
  TRISA = 1;           // PORTA is input

  do {
  if (PORTA != 0x01)
            i++;
  Delay_ms(1000);
  switch (i) {
  case 1: PORTB = 0x0F;
  case 2: PORTB = 0x0E;
  case 3: PORTB = 0x0D;
  case 4: PORTB = 0x0C;
  case 5: PORTB = 0x0B;
  case 6: PORTB = 0x0A;
  case 7: PORTB = 0x09;
  case 8: PORTB = 0x08;
  case 9: PORTB = 0x07;
  case 10: PORTB = 0x06;
  case 11: PORTB = 0x05;
  case 12: PORTB = 0x04;
  case 13: PORTB = 0x03;
  case 14: PORTB = 0x02;
  case 15: PORTB = 0x01;
  case 16: PORTB = 0x00;
}
  Delay_ms(1000);
  } while (1);
}


using mikroC compiler.... it display some error...

how can i solve this porblem???????.....

]]> Tue, 04 Mar 2008 06:20:22 -0800 http://www.8051projects.net/forum-t6482.html Re: binary down counter.... using PIC16F84A http://www.8051projects.net/forum-t6482.html contact@nospam.com (Ajay Bhargav) Tue, 04 Mar 2008 06:26:39 -0800 http://www.8051projects.net/forum-t6482.html Re: binary down counter.... using PIC16F84A http://www.8051projects.net/forum-t6482.html So start a new project,select the proper controller and default configuration.....should compile without problems.]]> contact@nospam.com (Ajay Bhargav) Tue, 04 Mar 2008 10:42:46 -0800 http://www.8051projects.net/forum-t6482.html Re: binary down counter.... using PIC16F84A http://www.8051projects.net/forum-t6482.html so is it working now ]]> contact@nospam.com (Ajay Bhargav) Thu, 06 Mar 2008 03:29:51 -0800 http://www.8051projects.net/forum-t6482.html Re: binary down counter.... using PIC16F84A http://www.8051projects.net/forum-t6482.html
my problem now is that no output was generated when i start to on the portA after i put it to the ciruit board.....
so i developed another program.....

CODE:
void main ()
        {
  int i=0;
        while(1) // loop forever //
        {
        TRISB=0;
        TRISA=1;
          if (PORTA != 0x01)
                  i++;
  if (i=1)
  {delay_ms(1000);
   PORTB = 0x0F;
   delay_ms(1000);
  }
  if (i=2)
  {delay_ms(1000);
   PORTB = 0x0E;
   delay_ms(1000);
  }
  if (i=3)
  {delay_ms(1000);
   PORTB = 0x0D;
   delay_ms(1000);
  }
  if (i=4)
  {delay_ms(1000);
   PORTB = 0x0C;
   delay_ms(1000);
  }
  if (i=5)
  {delay_ms(1000);
   PORTB = 0x0B;
   delay_ms(1000);
  }
  if (i=6)
  {delay_ms(1000);
   PORTB = 0x0A;
   delay_ms(1000);
  }
  if (i=7)
  {delay_ms(1000);
   PORTB = 0x09;
   delay_ms(1000);
  }
  if (i=8)
  {delay_ms(1000);
   PORTB = 0x08;
   delay_ms(1000);
  }
  if (i=9)
  {delay_ms(1000);
   PORTB = 0x07;
   delay_ms(1000);
  }
  if (i=10)
  {delay_ms(1000);
   PORTB = 0x06;
   delay_ms(1000);
  }
  if (i=11)
  {delay_ms(1000);
   PORTB = 0x05;
   delay_ms(1000);
  }
  if (i=12)
  {delay_ms(1000);
   PORTB = 0x04;
   delay_ms(1000);
  }
  if (i=13)
  {delay_ms(1000);
   PORTB = 0x03;
   delay_ms(1000);
  }
  if (i=14)
  {delay_ms(1000);
   PORTB = 0x02;
   delay_ms(1000);
  }
  if (i=15)
  {delay_ms(1000);
   PORTB = 0x01;
   delay_ms(1000);
  }
  if (i=16)
  {delay_ms(1000);
   PORTB = 0x00;
   delay_ms(1000);
   i=0;
  }

  }
}


i have compile this without error and it thus work in counting down (binary)...
when i input on(or 1) to portA..... but then it continues to count down.... my main objective is to control the output if i input signal to portA.... if not it holds the last state......

is there a problem with my new code ?
]]> contact@nospam.com (Ajay Bhargav) Tue, 04 Mar 2008 21:57:28 -0800 http://www.8051projects.net/forum-t6482.html Re: binary down counter.... using PIC16F84A http://www.8051projects.net/forum-t6482.html
CODE:
if (PORTA != 0x01)


write

CODE:
if (PORTA & 0x01 !=  0x01)


move the following statements out of while(1) loop because they are to be configured only once at the starting of main program.

CODE:
TRISB=0;
TRISA=1;


I really don't know why aren't you getting any kind of error or something.. coz your if statements are wrong..

instead of
CODE:
if (i=14)

you have to write
CODE:
if (i==14)

for all if statements... Please make the changes and try again ]]> contact@nospam.com (Ajay Bhargav) Wed, 05 Mar 2008 08:37:51 -0800 http://www.8051projects.net/forum-t6482.html Re: binary down counter.... using PIC16F84A http://www.8051projects.net/forum-t6482.html
if (PORTA & 0x01 != 0x00)

to satisfy the circuitry connection........

thanks....

i really appreciate the help..... ]]> contact@nospam.com (Ajay Bhargav) Wed, 05 Mar 2008 15:29:33 -0800 http://www.8051projects.net/forum-t6482.html