Example of Keypad 4x4 Program

Schematic Diagram for 4x4 Keypad

//Keypad Driver: flex_kbd4x4.c

#define row0 PIN_B4 

#define row1 PIN_B5 

#define row2 PIN_B6 

#define row3 PIN_B7 

#define col0 PIN_B0 

#define col1 PIN_B1 

#define col2 PIN_B2 

#define col3 PIN_B3 

// Keypad layout: 

char const KEYS[4][4] = 

{{'7','8','9','/'}, 

 {'4','5','6','X'}, 

 {'1','2','3','-'}, 

 {'*','0','=','+'}}; 

#define KBD_DEBOUNCE_FACTOR 33 // Set this number to apx n/333 where 

// n is the number of times you expect 

// to call kbd_getc each second 

void kbd_init() 

{ 

//set_tris_b(0xF0); 

//output_b(0xF0); 

port_b_pullups(true);  

} 

short int ALL_ROWS (void) 

{ 

if(input (row0) & input (row1) & input (row2) & input (row3)) 

   return (0); 

else 

   return (1); 

} 

char kbd_getc() 

{ 

static byte kbd_call_count; 

static short int kbd_down; 

static char last_key; 

static byte col; 

byte kchar; 

byte row; 

kchar='\0'; 

if(++kbd_call_count>KBD_DEBOUNCE_FACTOR) 

  { 

   switch (col) 

     { 

      case 0: 

        output_low(col0); 

        output_high(col1); 

        output_high(col2); 

        output_high(col3); 

        break; 

    

      case 1: 

        output_high(col0); 

        output_low(col1); 

        output_high(col2); 

        output_high(col3); 

        break; 

      case 2: 

        output_high(col0); 

        output_high(col1); 

        output_low(col2); 

        output_high(col3); 

        break; 

      case 3: 

        output_high(col0); 

        output_high(col1); 

        output_high(col2); 

        output_low(col3); 

        break; 

      } 

   if(kbd_down) 

     { 

      if(!ALL_ROWS()) 

        { 

         kbd_down=false; 

         kchar=last_key; 

         last_key='\0'; 

        } 

     } 

   else 

     { 

      if(ALL_ROWS()) 

        { 

         if(!input (row0)) 

            row=0; 

         else if(!input (row1)) 

            row=1; 

         else if(!input (row2)) 

            row=2; 

         else if(!input (row3)) 

            row=3; 

         last_key =KEYS[row][col]; 

         kbd_down = true; 

        } 

      else 

        { 

         ++col; 

         if(col==4) 

            col=0; 

        } 

     } 

   kbd_call_count=0; 

  } 

return(kchar); 

} 

//**********************************************************

//Main Program

#include <18F4550.h> // PIC18F4550 HEADER FILE

#fuses XT,NOWDT,NOLVP,NOPROTECT // EXTERNAL CLOCK, NO WATCH DOG TIMER, NO LOW VOLTAGE 

#device adc=10 // USE 10 BIT ADC QUANTIZATION

#use delay (clock=4M) // 4 MHZ CRYSTAL

#include <flex_lcd420.c>

#include <flex_kbd4x4.c>

//Main Program

void main()

{  

   char k;

   

   lcd_init();

   kbd_init();

   lcd_putc("\fReady...\n");

   //Pin Configuration

   

   while(true)

   {

      //Program start here

      k=kbd_getc();

      if(k!=0)

        if(k=='*')

         {

          lcd_putc('\f');

          delay_ms(100);

          lcd_putc("\fReady...\n");

         }

        else

          lcd_putc(k);

   }

}

Example of Keypad 4x3 Program

Result

Schematic Diagram

//Example of Program

#include <18F4550.h> // PIC18F4550 HEADER FILE

#fuses XT,NOWDT,NOLVP,NOPROTECT // EXTERNAL CLOCK, NO WATCH DOG TIMER, NO LOW VOLTAGE 

#device adc=10 // USE 10 BIT ADC QUANTIZATION

#use delay (clock=4M) // 4 MHZ CRYSTAL

#include <flex_lcd420.c>
#include <flex_kbd.c>

//Main Program

void main()

{  

   char k;

   

   lcd_init();

   kbd_init();

   lcd_putc("\fReady...\n");

   //Pin Configuration

   

   while(true)

   {

      //Program start here

      k=kbd_getc();

      if(k!=0)

        if(k=='*')

         {

          lcd_putc('\f');

          delay_ms(100);

          lcd_putc("\fReady...\n");

         }

        else

          lcd_putc(k);

   }

}

Chapter 5 : Controlling DC Motor

Example of Circuit

//Exercise1Motor.c : Controlling Direction of MotorA and MotorB

#include <18f4550.h> // Header file

#fuses HS, NOWDT, NOPROTECT, NOLVP

#use delay (clock = 20M)

// Pin Definition

#define MOTORA_1     PIN_B0 //IN1

#define MOTORA_2     PIN_B1 //IN2

#define MOTORB_1     PIN_B2 //IN3

#define MOTORB_2     PIN_B3 //IN4

void main(){

     //Set PORTB as output

     set_tris_b(0x00);

     //Configure PWM Pinout

     setup_timer_2(T2_DIV_BY_4,254,1);//PWM OUTPUT CONFIGURATION

setup_ccp1(ccp_pwm); //PWM 1 DUTY CYCLE CONFIGURATION

setup_ccp2(ccp_pwm); //PWM 2 DUTY CYCLE CONFIGURATION

     while(true){

           //Turn On Motor A CW

           output_high(MOTORA_1);

           output_low(MOTORA_2);

           //Turn On Motor B CCW

           output_low(MOTORB_1);

           output_high(MOTORB_2);

     }

}

//*************************************************************

//Exercise2Motor.c : Controlling Speed of MotorA and MotorB

#include <18f4550.h7gt; // Header file

#fuses HS, NOWDT, NOPROTECT, NOLVP

#use delay (clock = 20M)

// Pin Definition

#define MOTORA_1     PIN_B0 //IN1

#define MOTORA_2     PIN_B1 //IN2

#define MOTORB_1     PIN_B2 //IN3

#define MOTORB_2     PIN_B3 //IN4

void main(){

     //Set PORTB as output

     set_tris_b(0x00);

     //Configure PWM Pinout

     setup_timer_2(T2_DIV_BY_4,254,1);//PWM OUTPUT CONFIGURATION

setup_ccp1(ccp_pwm); //PWM 1 DUTY CYCLE CONFIGURATION

setup_ccp2(ccp_pwm); //PWM 2 DUTY CYCLE CONFIGURATION

     while(true){

           //Turn On Motor A CW

           output_high(MOTORA_1);

           output_low(MOTORA_2);

           set_pwm1_duty(200); //Speed of MotorA

           //Turn On Motor B CCW

           output_low(MOTORB_1);

           output_high(MOTORB_2);

           set_pwm2_duty(150); //Speed of MotorB

     }

}

//*************************************************************

//Exercise3Motor.c : Controlling Motor using Buttons

#include <18f4550.h> // Header file

#fuses HS, NOWDT, NOPROTECT, NOLVP

#use delay (clock = 20M)

#include <lcd.c>

//Pin Definition for LCD

#define LCD_ENABLE_PIN     PIN_D0

#define LCD_RS_PIN         PIN_D1

#define LCD_RW_PIN         PIN_D2

#define LCD_DATA4          PIN_D4

#define LCD_DATA5          PIN_D5

#define LCD_DATA6          PIN_D6

#define LCD_DATA7          PIN_D7

//Pin Definition for Buttons

#define    BUTTON1    PIN_B4

#define    BUTTON2    PIN_B5

// Pin Definition For Motor

#define MOTORA_1     PIN_B0 //IN1

#define MOTORA_2     PIN_B1 //IN2

#define MOTORB_1     PIN_B2 //IN3

#define MOTORB_2     PIN_B3 //IN4

void main(){

     //Set PINB0-PINB3 as output PINB4-PINB7 as input

     set_tris_b(0xF0);

     lcd_init();

     //Configure PWM Pinout

     setup_timer_2(T2_DIV_BY_4,254,1);//PWM OUTPUT CONFIGURATION

setup_ccp1(ccp_pwm); //PWM 1 DUTY CYCLE CONFIGURATION

setup_ccp2(ccp_pwm); //PWM 2 DUTY CYCLE CONFIGURATION

     while(true){

           if(!input(BUTTON1)){

                //Turn On Motor A MotorB turn Off

                output_high(MOTORA_1);

                output_low(MOTORA_2);

                output_high(MOTORB_1);

                output_high(MOTORB_2);

                set_pwm1_duty(100); //Speed of MotorA

                printf(lcd_putc,”\fMOTORA Move\nMOTORB Stop”);

                delay_ms(100);

           }

           else if(!input(BUTTON2)){

                output_high(MOTORA_1);

                output_high(MOTORA_2);

                output_high(MOTORB_1);

                output_low(MOTORB_2);

                set_pwm2_duty(100);

                printf(lcd_putc,”\fMOTORA Stop\nMOTORB Move”);

                delay_ms(100);

           }

           else {

                output_high(MOTORA_1);

                output_high(MOTORA_2);

                output_high(MOTORB_1);

                output_high(MOTORB_2);

                printf(lcd_putc,”\fMOTORA Stop\nMOTORB Stop”);

                delay_ms(100);

           }

     }

}

//*************************************************************

//Exercise4Motor.c : Controlling Speed of Motor using Buttons

#include <18f4550.h> // Header file

#fuses HS, NOWDT, NOPROTECT, NOLVP

#use delay (clock = 20M)

#include <lcd.c>

//Pin Definition for LCD

#define LCD_ENABLE_PIN     PIN_D0

#define LCD_RS_PIN         PIN_D1

#define LCD_RW_PIN         PIN_D2

#define LCD_DATA4          PIN_D4

#define LCD_DATA5          PIN_D5

#define LCD_DATA6          PIN_D6

#define LCD_DATA7          PIN_D7

//Pin Definition for Buttons

#define    BUTTON1    PIN_B4

#define    BUTTON2    PIN_B5

// Pin Definition For Motor

#define MOTORA_1     PIN_B0 //IN1

#define MOTORA_2     PIN_B1 //IN2

#define MOTORB_1     PIN_B2 //IN3

#define MOTORB_2     PIN_B3 //IN4

void main(){

     int32 speed=50; //Speed of motor

     //Set PINB0-PINB3 as output PINB4-PINB7 as input

     set_tris_b(0xF0);

     lcd_init();

     //Configure PWM Pinout

     setup_timer_2(T2_DIV_BY_4,254,1);//PWM OUTPUT CONFIGURATION

setup_ccp1(ccp_pwm); //PWM 1 DUTY CYCLE CONFIGURATION

setup_ccp2(ccp_pwm); //PWM 2 DUTY CYCLE CONFIGURATION

     while(true){

           if(!input(BUTTON1)){

                speed++;

                output_high(MOTORA_1);

                output_low(MOTORA_2);

                output_high(MOTORB_1);

                output_low(MOTORB_2);

                set_pwm1_duty(speed); //Speed of MotorA

                set_pwm2_duty(speed);

                printf(lcd_putc,”\fSpeed = %ld”,speed);

                delay_ms(100);

           }

           else if(!input(BUTTON2)){

                speed--;

                output_high(MOTORA_1);

                output_low(MOTORA_2);

                output_high(MOTORB_1);

                output_low(MOTORB_2);

                set_pwm1_duty(speed); //Speed of MotorA

                set_pwm2_duty(speed);

                printf(lcd_putc,”\fSpeed = %ld”,speed);

                delay_ms(100);

           }

           if(speed>=200){

                speed=200;

           }

           else if(speed<=20){

                speed=20;

           }

     }

}

//*************************************************************

//Exercise5Motor.c : Controlling Speed of Motor using Potentiometer

#include <18f4550.h> // Header file

#fuses HS, NOWDT, NOPROTECT, NOLVP

#device ADC=10

#use delay (clock = 20M)

#include <lcd.c>

//Pin Definition for LCD

#define LCD_ENABLE_PIN     PIN_D0

#define LCD_RS_PIN         PIN_D1

#define LCD_RW_PIN         PIN_D2

#define LCD_DATA4          PIN_D4

#define LCD_DATA5          PIN_D5

#define LCD_DATA6          PIN_D6

#define LCD_DATA7          PIN_D7

//Pin Definition for Buttons

#define    BUTTON1    PIN_B4

#define    BUTTON2    PIN_B5

// Pin Definition For Motor

#define MOTORA_1     PIN_B0 //IN1

#define MOTORA_2     PIN_B1 //IN2

#define MOTORB_1     PIN_B2 //IN3

#define MOTORB_2     PIN_B3 //IN4

void main(){

     int32 speed=250; //Speed of motor

     int32 value;

     //Set PINB0-PINB3 as output PINB4-PINB7 as input

     set_tris_b(0xF0);

     lcd_init();

     //Configure Analog Input

     setup_adc_ports (ALL_ANALOG);

     setup_adc (ADC_CLOCK_INTERNAL);

     //Configure PWM Pinout

     setup_timer_2(T2_DIV_BY_4,254,1);//PWM OUTPUT CONFIGURATION

setup_ccp1(ccp_pwm); //PWM 1 DUTY CYCLE CONFIGURATION

setup_ccp2(ccp_pwm); //PWM 2 DUTY CYCLE CONFIGURATION

     while(true){

        set_adc_channel(2);

         value=read_adc();

         value=value*100/1023;

        

         if(value>=80)

         {           

            speed = speed+10;

            delay_ms(100);

         }

         else if (value<=30)   

         {

            speed = speed-10;

            delay_ms(100);

         }

        

         if (speed >= 100)

         {

            speed = 100;

         }

         else if(speed<=2)

         {

            speed=2;        

         }

        

         output_high(MOTORA_1);

         output_low(MOTORA_2);

         output_high(MOTORB_1);

         output_low(MOTORB_2);

         set_pwm1_duty(speed);

         set_pwm2_duty(speed);

         printf(lcd_putc,"\fSPEED %ld",speed);

         printf(lcd_putc,"\nPercentage=%d%%",(int)value);        

         delay_ms(10); 

   }

}

Chapter 4 : ADC Programming

Example of Circuit

 

 

Exercise 1 :

 

//ExerciseADC1:Display Voltage Percentage and Temperature

#include <18f4550.h> //Header File
#fuses HS, NOWDT, NOLVP, NOPROTECT //Hardware Configuration
#device ADC=10 //Select 10 bit resolution
#use delay(clock=20M)
#include <lcd.c> //Driver for LCD

//Pin Definitions for LCD
#define   LCD_ENABLE_PIN   PIN_D0
#define   LCD_RS_PIN       PIN_D1
#define   LCD_RW_PIN       PIN_D2
#define   LCD_DATA4        PIN_D4
#define   LCD_DATA5        PIN_D5
#define   LCD_DATA6        PIN_D6
#define   LCD_DATA7        PIN_D7

//Main Function
void main(){
   //Variable declaration
   int32 value1, voltage, value2, temp, percent;

   //initialize LCD
   lcd_init();

   //ADC configuration
   setup_ADC(ADC_CLOCK_INTERNAL);
   setup_ADC_ports(ALL_ANALOG);

   while(true){
      //Program Start Here

      //Voltage
      set_adc_channel(0);
      value1=read_adc(); //Read analog signal
      voltage=value1*5/(1024-1); //Calculate conversion

      //Percentage
      percent=value1*100/(1024-1); //Calculate conversion
      //Temperature Sensor LM35
      set_adc_channel(1);
      value2=read_adc(); //Read analog signal
      temp=value2*5*100/1023; //Conversion
        
      //Display on LCD
      printf(lcd_putc,"\fVoltage = %dV",(int)voltage);
      printf(lcd_putc,"\nPercentage=%d%%",(int)percent);
      delay_ms(500);
      printf(lcd_putc,"\fSuhu=%.2f Degree",(float)temp);
      delay_ms(500);

   }
}

 

//**********************************************************

 

Exercise 2:

 

//ExerciseADC2: 3 LEDs will turn ON base on temperature

#include <18f4550.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#device ADC=10
#use delay(clock=20M)
#include <lcd.c>

//Pin Definition
//Pin Definitions for LCD
#define   LCD_ENABLE_PIN   PIN_D0
#define   LCD_RS_PIN       PIN_D1
#define   LCD_RW_PIN       PIN_D2
#define   LCD_DATA4        PIN_D4
#define   LCD_DATA5        PIN_D5
#define   LCD_DATA6        PIN_D6
#define   LCD_DATA7        PIN_D7

 

//Pin Definition for LED
#define   RED      PIN_C0
#define   YELLOW   PIN_C1
#define   GREEN    PIN_C2

//Main Function
void main(){
   int32 value1, temperature;
  
   lcd_init();

   //Set PORT C as output
   set_tris_c(0x00);
   output_c(0x00); //Initialize PORT C
  
   //ADC configuration
      setup_ADC(ADC_CLOCK_INTERNAL);
      setup_ADC_ports(ALL_ANALOG);
   while(true){
      //Read Analog Signal
      set_adc_channel(1);
      value1=read_adc();
      temperature=value1*100*5/1023;
     
      if(temperature>=100){
  printf(lcd_putc,"\fSuhu Alert \n%.2f Celcius",(float)temperature);
         output_high(RED);
         output_low(YELLOW);
         output_low(GREEN);
         delay_ms(500);
      }
      else if(temperature<=95&&temperature>=25){
 printf(lcd_putc,"\fSuhu Normal \n%.2f Celcius",(float)temperature);
         output_low(RED);
         output_high(YELLOW);
         output_low(GREEN);
         delay_ms(500);  
      }
      else if(temperature<=20){
     printf(lcd_putc,"\fSuhu Low\n%.2f Celcius",(float)temperature);
         output_low(RED);
         output_low(YELLOW);
         output_high(GREEN);
         delay_ms(500);  
      }
   }
}

//**********************************************************

Exercise 3:

//ExerciseADC3 : Manipulating LCD for displaying ADC
#include <18f4550.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#device ADC=10
#use delay(clock=20M)
#include <lcd.c>
//Pin Definition
//Pin Definitions for LCD
#define   LCD_ENABLE_PIN   PIN_D0
#define   LCD_RS_PIN       PIN_D1
#define   LCD_RW_PIN       PIN_D2
#define   LCD_DATA4        PIN_D4
#define   LCD_DATA5        PIN_D5
#define   LCD_DATA6        PIN_D6
#define   LCD_DATA7        PIN_D7
//Main Function
void main(){
   //Variable declaration
   int32 value1, voltage, value2, temp, percent;
   //initialize LCD
   lcd_init();
   //ADC configuration
   setup_ADC(ADC_CLOCK_INTERNAL);
   setup_ADC_ports(ALL_ANALOG);
   while(true){
      //Program Start Here
      //Voltage
      set_adc_channel(0);
      value1=read_adc(); //Read analog signal
      voltage=value1*5/(1024-1); //Calculate conversion
      //Percentage
      percent=value1*100/(1024-1); //Calculate conversion
      //Temperature Sensor LM35
      set_adc_channel(1);
      value2=read_adc(); //Read analog signal
      temp=value2*5*100/1023; //Conversion
        
      //Display on LCD
      printf(lcd_putc,"\fVoltage = %dV",(int)voltage);
      delay_ms(500);
      printf(lcd_putc,"\fSuhu=%.2f Degree",(float)temp);
      delay_ms(500);
   }
}

//**********************************************************
 
Exercise 4:

 


//ExerciseADC4: Controlling Motor via ADC

#include <18f4550.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#device ADC=10
#use delay(clock=20M)
#include <lcd.c>

//Pin Definitions for LCD
#define   LCD_ENABLE_PIN   PIN_D0
#define   LCD_RS_PIN       PIN_D1
#define   LCD_RW_PIN       PIN_D2
#define   LCD_DATA4        PIN_D4
#define   LCD_DATA5        PIN_D5
#define   LCD_DATA6        PIN_D6
#define   LCD_DATA7        PIN_D7
//Pin Definition for LED
#define   Motor1_L      PIN_C4
#define   Motor1_R      PIN_C5
#define   Motor2_L      PIN_C6
#define   Motor2_R      PIN_C7

//Main Function
void main(){
   int32 value1, voltage;
  
   lcd_init();
   //Set PORT C as output
   set_tris_c(0x00);
   output_c(0x00); //Initialize PORT C
  
   //ADC configuration
      setup_ADC(ADC_CLOCK_INTERNAL);
      setup_ADC_ports(ALL_ANALOG);
   while(true){
      //Read Analog Signal
      set_adc_channel(0);
      value1=read_adc();
      voltage=value1*5/1023;
     
      if(voltage>=3){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_high(Motor1_L);
         output_low(Motor1_R);
         output_low(Motor2_L);
         output_low(Motor2_R);
         delay_ms(500);
      }
      else if(voltage<=2){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_low(Motor1_L);
         output_low(Motor1_R);
         output_high(Motor2_L);
         output_low(Motor2_R);
         delay_ms(500);  
      }
      else{
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_low(Motor1_L);
         output_low(Motor1_R);
         output_low(Motor2_L);
         output_low(Motor2_R);
         delay_ms(500);  
      }
   }
}

//**********************************************************
 
Exercise 5:

//ExerciseADC5: Controlling LED bargraph
#include <18f4550.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#device ADC=10
#use delay(clock=20M)
#include <lcd.c>
//Pin Definition
//Pin Definitions for LCD
#define   LCD_ENABLE_PIN   PIN_D0
#define   LCD_RS_PIN       PIN_D1
#define   LCD_RW_PIN       PIN_D2
#define   LCD_DATA4        PIN_D4
#define   LCD_DATA5        PIN_D5
#define   LCD_DATA6        PIN_D6
#define   LCD_DATA7        PIN_D7

//Main Function
void main(){
   int32 value1, voltage;
  
   lcd_init();

   //Set PORT B as output
   set_tris_b(0x00);
   output_b(0x00); //Initialize PORT C
  
   //ADC configuration
      setup_ADC(ADC_CLOCK_INTERNAL);
      setup_ADC_ports(ALL_ANALOG);
   while(true){
      //Read Analog Signal
      set_adc_channel(0);
      value1=read_adc();
      voltage=value1*5/1023;
   
   if(voltage==0){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_b(0);
         delay_ms(500);
      }
      else if(voltage==1){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_b(3);
         delay_ms(500);  
      }
      else if(voltage==2){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_b(15);
         delay_ms(500);  
      }
   else if(voltage==3){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_b(31);
         delay_ms(500);  
      }
   else if(voltage==4){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_b(63);
         delay_ms(500);  
      }
   else if(voltage==5){
         printf(lcd_putc,"\fVoltage \n%dV",(int)voltage);
         output_b(255);
         delay_ms(500);  
      }
   }
}

Chapter 3 : LCD Programming

LCD Circuit

//Exercise1LCD : Display “WELCOME”

#include <18f4550.h> //Header File

#fuses HS, NOWDT, NOLVP ,NOPROTECT

#use delay (clock=20M)

//Define LCD PIN

#define LCD_ENABLE_PIN  PIN_D0

#define LCD_RS_PIN      PIN_D1

#define LCD_RW_PIN      PIN_D2

#define LCD_DATA4       PIN_D4

#define LCD_DATA5       PIN_D5

#define LCD_DATA6       PIN_D6

#define LCD_DATA7       PIN_D7

 

//Include LCD Library

#include //Library LCD

 

//Main Function

Void main()

{

   lcd_init(); //Initialize LCD

  

   While(true)

   {

         Printf(lcd_putc,”\fWELCOME\nMY FRIEND”);

 

 

                      delay_ms(100);

 

     }

 

}

 

/**************************************************************/

 

 

//Exercise2LCD : Display “WELCOME” at correct coordinate

 

#include <18f4550.h>//Header File

#fuses HS, NOWDT, NOLVP ,NOPROTECT

#use delay (clock=20M)

 

//Define LCD PIN

#define LCD_ENABLE_PIN  PIN_D0

#define LCD_RS_PIN      PIN_D1

#define LCD_RW_PIN      PIN_D2

#define LCD_DATA4       PIN_D4

#define LCD_DATA5       PIN_D5

#define LCD_DATA6       PIN_D6

#define LCD_DATA7       PIN_D7

 

//Include LCD Library

#include //Library LCD

 

//Main Function

 

Void main()

{

     Lcd_init(); //Initialize LCD

    

     While(true)

     {

          Lcd_putc(“\f”); //Clear screen

          Lcd_gotoxy(3,1);

          Lcd_putc(“PRAY TO”);

          Lcd_gotoxy(5,2);

          Lcd_putc(“MH370”);

          Delay_ms(100);

 

 

     }

 

}

 

/**************************************************************/

 

//Exercise3LCD : Message blink

 

#include <18f4550.h>//Header File

#fuses HS, NOWDT, NOLVP ,NOPROTECT

#use delay (clock=20M)

 

//Define LCD PIN

#define LCD_ENABLE_PIN  PIN_D0

#define LCD_RS_PIN      PIN_D1

#define LCD_RW_PIN      PIN_D2

#define LCD_DATA4       PIN_D4

#define LCD_DATA5       PIN_D5

#define LCD_DATA6       PIN_D6

#define LCD_DATA7       PIN_D7

 

//Include LCD Library

#include //Library LCD

 

//Main Function

 

Void main()

{

     Int I;

     Lcd_init(); //Initialize LCD

    

     While(true)

     {

          For(i=0; i<=4; i++)

          {

             

              Lcd_putc(“\f”); //Clear screen

              Delay_ms(250);

              Lcd_gotoxy(3,1);

              Lcd_putc(“PRAY TO”);

              Lcd_gotoxy(5,2);

              Lcd_putc(“MH370”);

              Delay_ms(250);

          }

 

 

     }

 

}

 

/**************************************************************/

 

//Exercise4LCD : Scroll Message Left Right

 

#include <18f4550.h>//Header File

#fuses HS, NOWDT, NOLVP ,NOPROTECT

#use delay (clock=20M)

 

//Define LCD PIN

#define LCD_ENABLE_PIN  PIN_D0

#define LCD_RS_PIN      PIN_D1

#define LCD_RW_PIN      PIN_D2

#define LCD_DATA4       PIN_D4

#define LCD_DATA5       PIN_D5

#define LCD_DATA6       PIN_D6

#define LCD_DATA7       PIN_D7

 

//Include LCD Library

#include //Library LCD

 

//Main Function

 

Void main()

{

     Int I;

     Lcd_init(); //Initialize LCD

    

     While(true)

     {

          For(i=1; i<=2; i++)

          {

             

              Lcd_putc(“\f”); //Clear screen

              Lcd_gotoxy(i,1);

              Lcd_putc(“PRAY TO”);

              Lcd_gotoxy(16-i,2);

              Lcd_putc(“MH370”);

              Delay_ms(250);

          }

 

 

     }

 

}

 

/**************************************************************/

//Exercise5LCD : Scroll Message Up Down

 

#include <18f4550.h>//Header File

#fuses HS, NOWDT, NOLVP ,NOPROTECT

#use delay (clock=20M)

 

//Define LCD PIN

#define LCD_ENABLE_PIN  PIN_D0

#define LCD_RS_PIN      PIN_D1

#define LCD_RW_PIN      PIN_D2

#define LCD_DATA4       PIN_D4

#define LCD_DATA5       PIN_D5

#define LCD_DATA6       PIN_D6

#define LCD_DATA7       PIN_D7

 

//Include LCD Library

#include //Library LCD

 

//Main Function

 

Void main()

{

     Int I;

     Lcd_init(); //Initialize LCD

    

     While(true)

     {

          For(i=1; i<=2; i++)

          {

             

              Lcd_putc(“\f”); //Clear screen

              Lcd_gotoxy(5,i);

              Lcd_putc(“PRAY TO”);

              Lcd_gotoxy(5,i-1);

              Lcd_putc(“MH370”);

              Delay_ms(250);

          }

 

 

     }

 

}

 

/**************************************************************/

 

//Exercise4LCD : Button

 

#include <18f4550.h>//Header File

#fuses HS, NOWDT, NOLVP ,NOPROTECT

#use delay (clock=20M)

 

//Define LCD PIN

#define LCD_ENABLE_PIN  PIN_D0

#define LCD_RS_PIN      PIN_D1

#define LCD_RW_PIN      PIN_D2

#define LCD_DATA4       PIN_D4

#define LCD_DATA5       PIN_D5

#define LCD_DATA6       PIN_D6

#define LCD_DATA7       PIN_D7

#define BUTTON          PIN_B0

//Include LCD Library

#include //Library LCD

//Main Function 

Void main()

{

     Set_tris_b(0xff);

     Int I;

     Lcd_init(); //Initialize LCD 

     While(true)

     {

          If(input(BUTTON))

          {

              Lcd_putc(“\fNO BUTTON\nPRESSED”);

              Delay_ms(100);

          }

          Else

          {

               For(i=1; i<=16; i++)

               {

                   Lcd_putc(“\f”); //Clear screen

                   Lcd_gotoxy(i,1);

                   Lcd_putc(“PRAY TO”);

                   Lcd_gotoxy(16-i,2);

                   Lcd_putc(“MH370”);

                   Delay_ms(250);

              }

          }

          }

     }

} 

/**************************************************************/