Using PIC16F887 microcontroller to control 8 single leds on and off using timer interrupt T1

• Requirements: Use a PIC16F887 microcontroller to control 8 single leds on and off using the timer interrupt T1 with a delay period of 262ms.
•  Circuit diagram on Proteus simulation software 

Figure 1. Controlling 8 LEDs to turn on and off using interrupts

• Main program:

File: main.c

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#INCLUDE <16F887.H>

#FUSES NOWDT,PUT,HS,NOPROTECT,NOLVP

#USE DELAY(CLOCK=20M)

UNSIGNED INT8 X;

#int_timer1

void interrupt_timer1()

{

   X=~X;

   OUTPUT_D(X);

}

VOID MAIN()

{ 

   SET_TRIS_D(0x00); X=0X00; OUTPUT_D(X);

   SETUP_TIMER_1(T1_INTERNAL | T1_DIV_BY_8);

   SET_TIMER1(0);

   ENABLE_INTERRUPTS(GLOBAL); ENABLE_INTERRUPTS(INT_TIMER1);

   WHILE(TRUE) {}

}

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Link download: https://drive.google.com/file/d/1e_8QOGfguNwGeuFN-T0MR9-vJyvMLAmz/view