help usart and LCD

/*
 * Project name:
     Lcd_Test (Demonstration of the LCD library routines)
 * Copyright:
     (c) Mikroelektronika, 2008.
 * Revision History:
     20080930:
       - initial release;
 * Description:
     This code demonstrates how to use LCD 4-bit library. LCD is first
     initialized, then some text is written, then the text is moved.
 * Test configuration:
     MCU:             PIC16F887
     Dev.Board:       EasyPIC5
     Oscillator:      HS, 08.0000 MHz
     Ext. Modules:    LCD 2x16
     SW:              mikroC PRO for PIC
 * NOTES:
     - Turn on LCD backlight switch (SW9.7) on development board.(board specific)
*/

// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections

char txt1[] = "mikroElektronika";    
char txt2[] = "EasyPIC5";
char txt3[] = "Lcd4bit";
char txt4[] = "example";

char i;                              // Loop variable

void Move_Delay() {                  // Function used for text moving
  Delay_ms(500);                     // You can change the moving speed here
}

void main(){
  ANSEL  = 0;                        // Configure AN pins as digital I/O
  ANSELH = 0;
  C1ON_bit = 0;                      // Disable comparators
  C2ON_bit = 0;
  
  Lcd_Init();                        // Initialize LCD

  Lcd_Cmd(_LCD_CLEAR);               // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);          // Cursor off
  Lcd_Out(1,6,txt3);                 // Write text in first row

  Lcd_Out(2,6,txt4);                 // Write text in second row
  Delay_ms(2000);
  Lcd_Cmd(_LCD_CLEAR);               // Clear display

  Lcd_Out(1,1,txt1);                 // Write text in first row
  Lcd_Out(2,5,txt2);                 // Write text in second row

  Delay_ms(2000);

  // Moving text
  for(i=0; i<4; i++) {               // Move text to the right 4 times
    Lcd_Cmd(_LCD_SHIFT_RIGHT);
    Move_Delay();
  }

  while(1) {                         // Endless loop
    for(i=0; i<8; i++) {             // Move text to the left 7 times
      Lcd_Cmd(_LCD_SHIFT_LEFT);
      Move_Delay();
    }

    for(i=0; i<8; i++) {             // Move text to the right 7 times
      Lcd_Cmd(_LCD_SHIFT_RIGHT);
      Move_Delay();
    }
  }
}

sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;

Lcd_Init();                        // Initialize LCD

void Lcd_Out(char row, char column, char *text);

void Lcd_Cmd(char out_char);

Lcd Command Purpose 
_LCD_FIRST_ROW Move cursor to the 1st row 
_LCD_SECOND_ROW Move cursor to the 2nd row 
_LCD_THIRD_ROW Move cursor to the 3rd row 
_LCD_FOURTH_ROW Move cursor to the 4th row 
_LCD_CLEAR Clear display 
_LCD_RETURN_HOME Return cursor to home position, returns a shifted display to its original position. Display data RAM is unaffected. 
_LCD_CURSOR_OFF Turn off cursor 
_LCD_UNDERLINE_ON Underline cursor on 
_LCD_BLINK_CURSOR_ON Blink cursor on 
_LCD_MOVE_CURSOR_LEFT Move cursor left without changing display data RAM 
_LCD_MOVE_CURSOR_RIGHT Move cursor right without changing display data RAM 
_LCD_TURN_ON Turn Lcd display on 
_LCD_TURN_OFF Turn Lcd display off 
_LCD_SHIFT_LEFT Shift display left without changing display data RAM 
_LCD_SHIFT_RIGHT Shift display right without changing display data RAM