microcontroller 15

LED Blinking Sequence using PIC Microcontroller

Project Code

/ 'C' source line config statements

// CONFIG
#pragma config FOSC = HS        // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = ON       // Brown-out Reset Enable bit (BOR enabled)
#pragma config LVP = OFF        // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF        // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF        // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF         // Flash Program Memory Code Protection bit (Code protection off)

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

#include <xc.h>

    #define _XTAL_FREQ 20000000 //Specify the XTAL crystall FREQ

/*******Sequence blink*******/
sblink(int get) //Function definition with "get" as parameter  
{
  for (int i=0; i<=7 && RB0==0; i++) 
        {
       PORTD = get << i;  //LED move Left Sequence 
       __delay_ms(50);
        }
          for (int i=7; i>=0 && RB0==0; i--)
        {
       PORTD = get << i;  //LED move Left Sequence 
       __delay_ms(50);
        }      
}

/*******MAIN Function*******/
void main() //The main function
{
TRISB0=1; //Instruct the MCU that the PORTB pin 0 is used as input for button.
TRISD = 0x00; //Instruct the MCU that all pins are output 
PORTD=0x00; //Initialize all pins to 0
OPTION_REG= 0b00000000;//Enable pull up R on port B

while(1) //Get into the Infinite While loop
{
    
    if (RB0==0)
    {
    
        sblink(1); //FUNCTION CALL 1 with parameter 1 
        sblink(3); //FUNCTION CALL 3 with parameter 3
        sblink(7); //FUNCTION CALL 7 with parameter 7
        sblink(15); //FUNCTION CALL 4 with parameter 15
        
        while(RB0==0) //If button is still pressed
        {
            PORTD=0xFF; //Turn ON all LEDs
        }
    }
   
}
}