i want C code for 4x4 keypad for the PIC18F45K20 microchip controller

[siram kumar]

i have a code but it was not working, i am using batch file to compiling the C Code and for simulating i am using proteus simulator. I am sending my code please any one can check the code and suggest me how to write a correct code for the PIC18F45k20 controller.



This is My Code...........

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Code C - [expand]
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#include "p18f45k20.h"
#include "xlcd.h"
#include "delays.h"
 
#pragma config FOSC = INTIO67 ,IESO = OFF
#pragma config WDTEN = OFF, MCLRE = OFF, LVP = OFF
 
#define COL_0 PORTDbits.RD4
#define COL_1 PORTDbits.RD5
#define COL_2 PORTDbits.RD6
#define COL_3 PORTDbits.RD7
 
#define ROW_A PORTDbits.RD0
#define ROW_B PORTDbits.RD1
#define ROW_C PORTDbits.RD2
#define ROW_D PORTDbits.RD3
 
void DelayFor18TCY(void)
{
    Nop();Nop();Nop();Nop();
    Nop();Nop();Nop();Nop();
    Nop();Nop();Nop();Nop();
}
void delay(void)
{
    int i;
    for(i = 0; i < 5000; i++);
}
void DelayPORXLCD(void)
{
    Delay1KTCYx(120);//Delay of 15ms
    //cycles = (TimeDelay * FOSC)/4
    //cycles = (15ms * 16MHz)/4
    //cycles = 60,000
    return;
}
void DelayXLCD(void)
{
    Delay1KTCYx(20);//Delay of 5ms
    //cycles = (TimeDelay * FOSC)/4
    //cycles = (5ms * 16MHz)/4
    //cycles = 20,000
    return; 
}
 
typedef unsigned char Byte;
Byte row,Key_Value;
Byte Keypad_Value[4][4] = {'0','1','2','3',
                           '4','5','6','7',
                           '8','9','A','B',
                           'C','D','E','F'};
Byte Keypad(void);
void Lcddisplay_Str(Byte *Str);
 
void main(void)
{
    Byte data[10] = "Keypad";
    TRISD = 0b11110000;
    TRISB = 0b00000000;
    OSCCONbits.IRCF = 0x03;
    //configure Lcd
    OpenXLCD(FOUR_BIT & LINES_5X7);
    while(BusyXLCD());  //Wait if LCD busy
    WriteCmdXLCD(SHIFT_DISP_LEFT); //set lcd write left to right
    while(BusyXLCD());
    Lcddisplay_Str(data);
    
    row = 0;
    while(1)
    {
        Key_Value = Keypad();
        WriteCmdXLCD(0xC0);
        while(BusyXLCD());
        WriteDataXLCD(Key_Value);
    }
}
Byte Keypad(void)
{
    COL_0 = COL_1 = COL_2 = COL_3 = 1;
    delay();
    ROW_A = ROW_B = ROW_C = ROW_D = 0;
    if(!COL_0 || !COL_1 || !COL_2 || !COL_3)
    {
        while(1)
        {
            ROW_A = 0; ROW_B = 1; ROW_C = 1; ROW_D = 1;
            if(!COL_0 || !COL_1 || !COL_2 || !COL_3)
            {
                row = 0;
                break;
            }
            ROW_A = 1; ROW_B = 0; ROW_C = 1; ROW_D = 1;
            if(!COL_0 || !COL_1 || !COL_2 || !COL_3)
            {
                row = 1;
                break;
            }
            ROW_A = 1; ROW_B = 1; ROW_C = 0; ROW_D = 1;
            if(!COL_0 || !COL_1 || !COL_2 || !COL_3)
            {
                row = 2;
                break;
            }
            ROW_A = 1; ROW_B = 1; ROW_C = 1; ROW_D = 0;
            if(!COL_0 || !COL_1 || !COL_2 || !COL_3)
            {
                row = 3;
                break;
            }
        }
        if(COL_0 == 0 && COL_1 == 1 && COL_2 == 1 && COL_3 == 1)
        {
            return (Keypad_Value[row][0]);
        }
        else if(COL_0 == 1 && COL_1 == 0 && COL_2 == 1 && COL_3 == 1)
        {
            return (Keypad_Value[row][1]);
        }
        else if(COL_0 == 1 && COL_1 == 1 && COL_2 == 0 && COL_3 == 1)
        {
            return (Keypad_Value[row][2]);
        }
        else if(COL_0 == 1 && COL_1 == 1 && COL_2 == 1 && COL_3 == 0)
        {
            return (Keypad_Value[row][3]);
        }
        else
        {
            //do noting
        }
    }
    //return 0xFF;
}
void Lcddisplay_Str(Byte *Str)
{
    while(*Str)
    {
        WriteDataXLCD(*Str++);
        delay();
    }
}

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