Program to display 2 rows of information using PIC16F887 microcontroller interface with LCD 16x2

• Circuit diagram Interface PIC16F887 microcontroller with LCD on Proteus software:

Figure 1. PIC16F887 microcontroller interface with LCD

• Main program:

Display 2 rows of information on LCD.c

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#INCLUDE <16F887.H>

#FUSES NOWDT,PUT,HS,NOPROTECT,NOLVP

#USE DELAY(CLOCK=20M)

#INCLUDE<TV_LCD.C>

UNSIGNED INT I;

const unsigned char HANG1[16]={"   PIC16F887    "};

const unsigned char HANG2[16]={"   LCD  16x2    "};

VOID MAIN()

{

   SET_TRIS_C(0x00); SET_TRIS_D(0x00); OUTPUT_C(0xFF);

   LCD_SETUP();

   LCD_COMMAND(ADDR_LINE1); DELAY_US(10);

   FOR (I=0;I<16;I++) { LCD_DATA(HANG1[I]);}

   LCD_COMMAND(ADDR_LINE2); DELAY_US(10);

   FOR (I=0;I<16;I++) { LCD_DATA(HANG2[I]);}

   while(TRUE) {}

}

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• LCD Library:

TV_LCD.c
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#IFNDEF LCD_RS

#DEFINE LCD_RS PIN_C0

#ENDIF

#IFNDEF LCD_RW

#DEFINE LCD_RW PIN_C1

#ENDIF

#IFNDEF LCD_E

#DEFINE LCD_E PIN_C2

#ENDIF

#IFNDEF OUTPUT_LCD

#define OUTPUT_LCD OUTPUT_D

#ENDIF

#DEFINE FUNCTION_SET 0X38

#DEFINE DISPLAY_CONTROL 0X0F

#DEFINE CLEAR_DISPLAY 0X01

#DEFINE ENTRY_MODE 0X06

#DEFINE SHIFT_LEFT 0X18

#DEFINE SHIFT_RIGHT 0X1C

#DEFINE ADDR_LINE1 0X80

#DEFINE ADDR_LINE2 0XC0

void LCD_COMMAND(UNSIGNED CHAR MDK)

{

   OUTPUT_LOW(LCD_RS); OUTPUT_LCD(MDK);

   OUTPUT_HIGH(LCD_E); DELAY_US(20);

   OUTPUT_LOW(LCD_E); DELAY_US(20);

}

void LCD_DATA(UNSIGNED CHAR MHT)

{ 

   OUTPUT_HIGH(LCD_RS); OUTPUT_LCD(MHT);

   OUTPUT_HIGH(LCD_E); DELAY_US(20);

   OUTPUT_LOW(LCD_E); DELAY_US(20);

}

VOID LCD_SETUP()

{ 

   OUTPUT_LOW(LCD_E);

   OUTPUT_LOW(LCD_RS);

   OUTPUT_LOW(LCD_RW);

   LCD_COMMAND(FUNCTION_SET); DELAY_MS(1);

   LCD_COMMAND(DISPLAY_CONTROL);

   LCD_COMMAND(CLEAR_DISPLAY); DELAY_MS(2);

   LCD_COMMAND(ENTRY_MODE);

}

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Link to download simulation software:

https://drive.google.com/file/d/1iIdvbfK5V-8_DqGxx3hleKbLJPxoSLs5/view