p18f4550

#include
#include

#pragma config FOSC = INTOSCIO_EC //Internal oscillator, port function on RA6, EC used by USB
#pragma config WDT = OFF //Disable watchdog timer

#define LEDPin LATDbits.LATD1 //Define LEDPin as PORT D Pin 1
#define LEDTris TRISDbits.TRISD1 //Define LEDTris as TRISD Pin 1

void main()
{
    LEDTris = 0;//Set LED Pin data direction to OUTPUT
    LEDPin = 1;//Set LED Pin
   
    while(1)
    {
        LEDPin = ~LEDPin;//Toggle LED Pin
        Delay10KTCYx(25);//Delay 250K cycles (1 second at 1MHz since each instruction takes 4 cycles)
    }

}