Ufdjrw

I am new to PIC programming. I am strucked with a task, where i have
to display a letter "A" on LCD when i press a particular switch three times.Please help me if anyone knows. Thanks in advance.

 I used MPLAB X IDE V5.0.





// CONFIG
 #pragma config FOSC = EXTRC // Oscillator Selection bits (RC 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 = OFF // Brown-out Reset Enable bit (BOR disabled)
 #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)



 #include <xc.h>
 void command(unsigned char cmd);
 void data(unsigned char dat);
 void display_string(const char *s);
 void delay();

 void main(void) 

 TRISB=0X00;
 PORTB=0X00;
 TRISE=0X00;
 PORTE=0X00;
 ADCON1=0X06;// reference the Hyperlink

 command(0x01);//clear display
 delay();
 command(0x0C);//Turn on the display and off cursor blinking
 delay();
 command(0x05);//increment the cursor after byte each byte written
 delay();
 command(0x38);//set 8-bit interface 
 delay();
 command(0x80);//set DRAM address
 delay();

 while(1)
 
 command(0x80);//set DRAM address

 display_string("A"); //display A 
 data('A'); // or dat like A
 data(65); // ASCII key A=65



 


 

 void command(unsigned char cmd)
 
 PORTE=0X04;
 PORTB=cmd;
 delay();
 RE2=0;

 
 void data(unsigned char dat)
 
 PORTE=0X05;
 PORTB=data;
 delay();
 RE2=0;

 

 void display_string(const char *s)
 
 while(*s)
 data(*s++);
 
 void delay()
 
 for(int i=0;i<255;i++);
 

Output