at89c52单片机与1602液晶显示器第一行显示200115009，第二行显示FENGJINFU。a:从屏幕右侧移入，遇到屏幕左侧停止

您可以参考以下代码实现您的需求：

#include <reg52.h>
#include <intrins.h>

#define LCD_RS P2_0
#define LCD_RW P2_1
#define LCD_EN P2_2
#define LCD_DATA P0

void delay_ms(unsigned int ms) {
    unsigned int i, j;
    for(i = 0; i < ms; i++) {
        for(j = 0; j < 1141; j++);
    }
}

void lcd_init() {
    LCD_RS = 0;
    LCD_RW = 0;
    LCD_EN = 0;
    LCD_DATA = 0x38;  // function set: 8-bit mode, 2-line display, 5x7 font
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 1;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 0;
    delay_ms(5);

    LCD_DATA = 0x0c;  // display control: display on, cursor off, blink off
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 1;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 0;
    delay_ms(5);

    LCD_DATA = 0x01;  // clear display
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 1;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 0;
    delay_ms(5);

    LCD_DATA = 0x06;  // entry mode set: increment cursor, no shift
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 1;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 0;
    delay_ms(5);
}

void lcd_write_cmd(unsigned char cmd) {
    LCD_RS = 0;
    LCD_RW = 0;
    LCD_EN = 0;
    LCD_DATA = cmd;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 1;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 0;
    delay_ms(5);
}

void lcd_write_data(unsigned char dat) {
    LCD_RS = 1;
    LCD_RW = 0;
    LCD_EN = 0;
    LCD_DATA = dat;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 1;
    _nop_();
    _nop_();
    _nop_();
    LCD_EN = 0;
    delay_ms(5);
}

void lcd_set_cursor(unsigned char row, unsigned char col) {
    unsigned char addr;
    if(row == 0) {
        addr = 0x80 + col;
    } else {
        addr = 0xc0 + col;
    }
    lcd_write_cmd(addr);
}

void lcd_shift_right() {
    lcd_write_cmd(0x1c);
}

void lcd_display() {
    lcd_write_data('2');
    lcd_write_data('0');
    lcd_write_data('0');
    lcd_write_data('1');
    lcd_write_write_data('1');
    lcd_write_data('5');
    lcd_write_data('0');
    lcd_write_data('0');
    lcd_write_data('9');
    lcd_write_data(' ');
    lcd_write_data(' ');
    lcd_write_data(' ');
    lcd_write_data('F');
    lcd_write_data('E');
    lcd_write_data('N');
    lcd_write_data('G');
    lcd_write_data('J');
    lcd_write_data('I');
    lcd_write_data('N');
    lcd_write_data('F');
    lcd_write_data('U');
    while(1) {
        lcd_write_cmd(0x1c);  // shift display right
        delay_ms(500);
    }
}

void main() {
    lcd_init();
    lcd_display();
}

该代码实现了1602液晶显示器的初始化和显示功能，并且在显示完信息后将屏幕向右移动并且不停止。您可以根据需要调整移动速度和停止位置。