a beginner needs help with programming !!

[fara793]

a beginner needs help!!

i am working in project, and i dont how to complete, so please help me, its urgent!!

i need this code to be in a loop:

           portA =%00001100     '(1)
           portD =%00001001
           delay_ms (2000)
           portA =%00010010     ' 1-2
           portD =%00001001
           delay_ms (2000)
           portA =%00100001     '(2)
           portD =%00001001
           delay_ms (2000)
           portA =%00010001     ' 2-3
           portD =%00001010
           delay_ms (2000)
           portA =%00001001     ' 3-4
           portD =%00010010
           delay_ms (2000)
           portA =%00001001     '(4)
           portD =%00100001
           delay_ms (2000)
           portA =%00001010     ' 4-1
           portD =%00010001
           delay_ms (2000)

but if portB=%00000001, i need it to stop the loop and do this:

           portA =%00001100
           portD =%00001001
           delay_ms (5000)

and then get back to the beginning of the loop,

and the same thing when portB= %00000010

           portA =%00100001
           portD =%00001001
           delay_ms (5000)

and the same here when portB= %00000100

           portA =%00001001
           portD =%00001100
           delay_ms (5000)

and the same here too when portB= %00001000

           portA =%00001001
           portD =%00100001
           delay_ms (2000)

THANK YOU!!!

 

[btbass]

Re: a beginner needs help!!

In C it's a piece of cake!

void main() 
  {
  while(true)
    {
    portA = %00001100;
    portD = %00001001; 
    delay_ms(2000);

    if(check_port_B){
      continue;
      }
 
    portA = %00010010;      
    portD = %00001001; 
    delay_ms(2000);

    if(check_port_B){
      continue;
      }
 
    portA = %00100001;      
    portD = %00001001; 
    delay_ms(2000);

    if(check_port_B){
      continue;
      }
 
    portA = %00010001;      
    portD = %00001010; 
    delay_ms(2000);

    if(check_port_B){
      continue;
      } 

    portA = %00001001;    
    portD = %00010010; 
    delay_ms(2000);

    if(check_port_B){
      continue;
      }
 
    portA = %00001001;     
    portD = %00100001; 
    delay_ms(2000);

    if(check_port_B){
      continue;
      }
 
    portA = %00001010;     
    portD = %00010001; 
    delay_ms(2000);
    } 
  }

/*--- Check Port B ---*/

Bool check_port_B(void)
  {
  Bool result;
  unsigned char port_value;

  port_value = portB;
  
  switch(port_value)
    {
    case %00000001: portA = %00001100; 
                    portD = %00001001; 
                    delay_ms(5000);
                    result = true;
                    break;

    case %00000010: portA = %00100001; 
                    portD = %00001001; 
                    delay_ms(5000);
                    result = true;
                    break;

    case %00000100: portA = %00001001; 
                    portD = %00001100; 
                    delay_ms(5000);
                    result = true;
                    break;

    case %00001000: portA = %00001001; 
                    portD = %00100001; 
                    delay_ms(2000);
                    result = true;
                    break;

    default:  result = false;
              break;

    }

  return result;
  }

 

[egeorgiev]

a beginner needs help!!

btbass, your code will do nicely unless port B changes in less than ~10000 ms, but you risk to lose a lot of transitions on port B while you execute
delay_ms(2000);
or
delay_ms(5000); in main()!
BTW, there is no need to post the same problem twice - even when urgent!

 

[Tahmid]

a beginner needs help!!

Hi,
I guess this should do the trick:
Make sure you pull-up PORTA4 with a resistor.
The code could have been even smaller, but I tried to make it simple.

program leddance

const PORTAVal as byte[11] = (%00001100, %00010010, %00100001, %00010001, %00001001, %00001001, %00001010, %00001100, %00100001, %00001001, %00001001)
const PORTDVal as byte[11] = (%00001001, %00001001, %00001001, %00001010, %00010010, %00100001, %00010001, %00001001, %00001001, %00001100, %00100001)

dim count, count2, count3 as byte

main:
     TRISB = 255
     TRISA = 0
     TRISD = 0
     PORTA = 0
     PORTD = 0
     ADCON1 = 7
     CMCON = 7
     while true
           while (PORTB = 0)
                 PORTA = PORTAVal[count]
                 PORTD = PORTDVal[count]
                 for count2 = 1 to 200
                     if (PORTB = 0) then
                        delay_ms(10)
                     end if
                 next count2
                 Inc(count)
                 if (count > 6) then
                    count = 0
                 end if
           wend
           count = 0
           if (PORTB = %00000001) then
              delay_ms(30)
              PORTA = PORTAVal[7]
              PORTD = PORTDVal[7]
              for count3 = 1 to 200
                  if (PORTB = 0) or (PORTB = 1) then
                     delay_ms(25)
                  end if
              next count3
           end if
           if (PORTB = %00000010) then
              delay_ms(30)
              PORTA = PORTAVal[8]
              PORTD = PORTDVal[8]
              for count3 = 1 to 200
                  if (PORTB = 0) or (PORTB = 2) then
                     delay_ms(25)
                  end if
              next count3
           end if
           if (PORTB = %00000100) then
              delay_ms(30)
              PORTA = PORTAVal[9]
              PORTD = PORTDVal[9]
              for count3 = 1 to 200
                  if (PORTB = 0) or (PORTB = 4) then
                     delay_ms(25)
                  end if
              next count3
           end if
           if (PORTB = %00001000) then
              delay_ms(30)
              PORTA = PORTAVal[10]
              PORTD = PORTDVal[10]
              for count3 = 1 to 200
                  if (PORTB = 0) or (PORTB = 8) then
                     delay_ms(25)
                  end if
              next count3
           end if
     wend
end.

Tahmid.