New At PIC's, need some help with code

[SOHCKing03]

Hi everyone,

I am currently in the works of making a car product where I need to make LED's sequence down a line. i.e 0=off 1=on so...

0000
1000
1100
1110
1111
0111
0011
0001
0000

I think I have come up with a good code but I don't know how to increment the PIN number in my code during a DO LOOP. Each LED is driven by one output and so I need to increment the outputs to sequence them. Will I have turn on the LED from one output in one LOOP then do another in another LOOP and so on?

If I'm not clear then I'll try to explain it better.

-Brad

[sayzer]

Hi Joe,

Take a look at this.

http://www.picbasic.co.uk/forum/showthread.php?t=3753



Regards.

[paul borgmeier]

BRAD,

What PIC? You posted in the PBC section and not PBP - is this correct? If you are using PBC, try

'Example for 16F628A with PBC (Not PBP)

POKE $86, 0	' all of PORTB output (optional line but good programming practice) 
POKE $06, 0	' all of PORTB low (optional line but good programming practice) 

MAIN:
PAUSE 500     ' no LED on

FOR B0 = 0 to 3
     HIGH B0      ' turn ON  RB0, then RB1, then RB2, then RB3
     PAUSE 500 ' pause half a second
NEXT B0

FOR B0 = 0 to 3
     LOW B0      ' turn OFF  RB0, then RB1, then RB2, then RB3
     PAUSE 500 ' pause half a second
NEXT B0

PAUSE 500     ' no LED on

GOTO MAIN

END

You might also want to check out Melanie's excellent post here

http://tinyurl.com/gpt6b

and search the forum for "rider" (as in knight rider) for more visual ideas.

Any questions?

[SOHCKing03]

Thanks for the replies...

I think I will test out a code I created using some of the elements from the code you guys gave me...

Hopefully it'll work and I can get this thing going...

-Brad

[SOHCKing03]

Okay well I will use the code from the link Sayzer gave me...

I am making an LED Underbody Kit though and so one PIC will control the front left, one will control the left side, one will control the the back left, and the same for the right side. So I will need my PIC's to communicate. When the last LED on the front left is turned on I want the side to start sequencing and same goes for the transition from side to back.

To do this will I have to set the final output on the front left to go high and then have it connected to an input on the side PIC? That way I could tell the side PIC not to do anything until that input receives a "high" signal from the other PIC. I could do that correct? If so, how would I program it?

Thanks again for all your help guys.

-Brad

[sayzer]

If I understood correct, this should be it. Just an example though.

Wait:

IF PORTA.1 = 1 THEN GOTO Loop
'This is the pin you get the input signal from the other PIC.

GOTO Wait


Loop:

'Your loop code should be here....
'When the last loop index is achieved, 
'you will HIGH a pin to activate the next PIC
'and you will go back to "Wait"


GOTO loop