USART Receiver With PIC18F4520

Title:USART Receiver With PIC18F4520

Program:

//Author : Palak Patel

//Contact No:9173211683

//Title: USART Receiver

//Platform: PIC18f4520

//Software: MPLAB

#include<p18f4520.h>

void cmd(unsigned char);

void dat(unsigned char);

void delay();

void main()

{

         unsigned char i,lcddata;

         TRISD=0x00;

         TRISB=0x00;        

         cmd(0x01);                          //Clear Lcd

         cmd(0x02);                          //4 Bit Specification

         cmd(0x28);                          //4 Bit specification

         cmd(0x0c);

         cmd(0x80);                          //Cursor starting point

               

         RCSTA=0x90;

         SPBRG=31;

         i=0;

         dat('I');

          while(1)

          {

                                while(PIR1bits.RCIF==0);

                                lcddata=RCREG;

                                PORTB=RCREG;

                                dat(lcddata);

                                //i++;

           }

}

void cmd(unsigned char k)

{

        PORTD &=0x0F;

        PORTD |=(k & (0xF0));

        PORTD |=(2<<0);

        delay();

        PORTD=PORTD & 0xFC;

        delay();

        PORTD &=0x0F;

        PORTD |=((k<<4) & (0xF0));

        PORTD |=(2<<0);

        delay();

        PORTD=PORTD & 0xFC;

        delay();

}

void dat(unsigned char k)

{

        PORTD &=0x0F;

        PORTD |=(k & 0xF0);

        PORTD |=(3<<0);

        delay();

        PORTD=PORTD & 0xFD;

        delay();

        PORTD &=0x0F;

        PORTD |=((k<<4) & (0xF0));

        PORTD |=(3<<0);

        delay();

        PORTD=PORTD & 0xFD;

        delay();

}

void delay()

{

                unsigned int i;

                for(i=0;i<40;i++);

}

Simulation:

For Basic Electronics Kindaly follow this Link:

http://basicelectonicspalakpatel.blogspot.in/2014/08/the-mosfet-as-switch.html