问LCD显示随机字符(MPLAB)

EN

// single bit for selecting command register or data register 
#define instr 0 #define data 1

// These #defines create the pin connections to the LCD in case they 
are changed on a future demo board
#define LCD_PORT     PORTD
#define LCD_PWR      PORTDbits.RD7   // LCD power pin
#define LCD_EN       PORTDbits.RD1   // LCD enable
#define LCD_RW       PORTDbits.RD6   // LCD read/write line
#define LCD_RS       PORTDbits.RD0   
#define LCD_D4       PORTDbits.RD2
#define LCD_D5       PORTDbits.RD3
#define LCD_D6       PORTDbits.RD4
#define LCD_D7       PORTDbits.RD5

// LCD register select line

#define NB_LINES    2   // Number of display lines
#define NB_COL      16  // Number of 
characters per line

#include "mcc_generated_files/mcc.h"
#include "lcd.h"
#define _XTAL_FREQ 4000000

 void main(void)
 {
 // initialize the device
 SYSTEM_Initialize();

 // initialize LCD
 LCD_Initialize();

LCDGoto(4, 1);           // go to column 4, row 1
LCDPutChar("test1");
LCDGoto(3, 2);           // go to column 3, row 2
LCDPutStr("test2");

while (1)
{

}
}