如题，请大神们看看是不是程序的问题！#include <pic18.h>#include <stdio.h>#include <stdlib.h>
#define uint unsigned int#define uchar unsigned char #define res     PORTCbits.RC5#define sce     PORTCbits.RC4        //片选PORTAbits.RA0 #define dc      PORTCbits.RC3         //1些数据，0写指令#define sdin    PORTCbits.RC6         //数据#define sclk    PORTCbits.RC7         //时钟

void LCD_init(void);void init(void);void LCD_write_byte(unsigned char dt,unsigned char command);void delay(uint x);void LCD_set_XY(unsigned char X,unsigned char Y);void LCD_clear(void);void LCD_write_char(unsigned char x,unsigned char y,unsigned char c);void LCD_write_english_string(unsigned char X,unsigned char Y,char *s);
void main(void){    init();    LCD_init();//初始化LCD模块    LCD_clear();//清屏    while(1)    {          LCD_write_english_string(0,0," Welcome to  ");        LCD_write_english_string(0,1," Amy  studio ");        LCD_write_english_string(0,2,"amy-studio.com");        LCD_write_english_string(0,3," Nokia5110 LCD");    }//    while(1)  //  {//        asm("CLRWDT");//    }}
void init(void)  //单片机初始化{    asm("CLRWDT");    ADCON1=0x06;    TRISC=0x00;    PORTB=0x00;}
void LCD_write_byte(unsigned char dt,unsigned char command){    unsigned char i;    sce = 0;        //片选    dc = command;   //1写数据，0写指令    for(i=0;i<8;i++) //循环传送8个bit    {        if(dt&0x80)            sdin=1;        else            sdin=0;        dt=dt<<1;        sclk = 0;        asm("CLRWDT");        asm("CLRWDT");        sclk=1;     //在时钟上升沿采样    }    dc=1;    sce=1;    sdin=1;}
void LCD_init(void)     //LCD初始化{    res=0;    delay(10);    res=1;    sce=0;      //sce为高时，串行口被初始化。sce为高时忽略始时钟信号。    delay(10);    sce=1;    LCD_write_byte(0x21,0);//0b0010 0001LCD功能设置：芯片活动，水平寻址，使用扩展指令    LCD_write_byte(0xc6,0);//设置VOP值    LCD_write_byte(0x06,0);//温度校正    LCD_write_byte(0x13,0);//1:48    LCD_write_byte(0x20,0);//LCD功能设置：新品活动，水平寻址，使用基本指令    LCD_clear();    LCD_write_byte(0x0c,0);//设定显示配置：普通模式
    sce=0;}
void LCD_set_XY(unsigned char X,unsigned char Y)// 位置选择{    LCD_write_byte(0x40|Y,0);    LCD_write_byte(0x80|X,0);}
void LCD_clear(void)    //清屏{    unsigned char t;    unsigned char k;    LCD_set_XY(0,0);    for(t=0;t<6;t++)    {        for(k=0;k<84;k++)        {            LCD_write_byte(0x00,1);            asm("CLRWDT");        }    }}
void LCD_write_char(unsigned char x,unsigned char y,unsigned char c)//写数据{    unsigned char line;    c -= 32;    LCD_set_XY(x*6,y);    for(line=0;line<6;line++)        LCD_write_byte(font6x8[c][line],1);}
void delay(uint x)//延时程序{    uint a,b;    for(a=x;a>0;a--)        for(b=110;b>0;b--);}
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s){    LCD_set_XY(X,Y);    while(*s)    {        LCD_write_char(X,Y,*s);        s++;    }}