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Rotate LED

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PCM programmer

Joined: 06 Sep 2003
Posts: 21708

Posted: Wed Aug 27, 2014 1:33 pm

This code lights up LEDs on PortB, bits 0 to 3. They are turned on
sequentially. Once turned on, the Leds stay on. This program
shows how to read from an array. I used PortB because that's the
way my hardware board is setup.

Code:

#include <18F452.h>
#fuses XT, BROWNOUT, PUT, NOWDT, NOLVP
#use delay(clock=4M)
#use rs232(baud=9600, UART1, ERRORS)

int LED_LookupTable[8]={0,1,2,3,4,5,6,7};

#byte PORTB = getenv("SFR:PORTB")

//===================================
void main()
{
int i;

output_b(0x00); // All Leds off initially, and PortB TRIS = all outputs

for(i = 0; i < 4; i++)
{
bit_set(PORTB, LED_LookupTable[i]);
delay_ms(500);
}

while(1);
}

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