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How do you toggle an LED on and off using 12F509

 
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Allen



Joined: 30 Dec 2008
Posts: 3

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How do you toggle an LED on and off using 12F509
PostPosted: Wed Dec 31, 2008 12:39 pm     Reply with quote
I want to toggle on and off an LED when I press a button, I want it to turn on when I press it and I want it to turn off when I press it again. It also has to repeat so I can do it over and over again.

If someone could please give me some code examples it would really help me out.

THANK YOU
ALLEN
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Dec 31, 2008 2:45 pm     Reply with quote
See the program below. This will flash an LED on and off. That's a good
place to start. Connect a series resistor and an LED to pin B2.
Look at Figure 5 (on page 2) of the link below to see a schematic of the
LED and resistor circuit. Do it the same way, except use pin B2 instead
of pin B0. You can use a resistor from 220 to 470 ohms. I assume your
PIC is running at +5v.
http://www.siriusmicro.com/projects/b2.pdf
Then try this program:
Code:
#include <12F509.h>
#fuses INTRC, NOWDT, NOMCLR
#use delay(clock=4000000)

//==================================
void main()
{

while(1)
  {
   output_high(PIN_B2);
   delay_ms(500);
   output_low(PIN_B2);
   delay_ms(500);
  }
 
}
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