/*==================================== 
*名稱：lcd_str.c 
*功能：從串口調(diào)試工具發(fā)送一字符串到單片機(jī)，在lcd1602上顯示【未加入校驗(yàn)】 
*作者：flying 09-2-23 
*修改： 
======================================*/ 
#include<reg51.h> 
#define uchar unsigned char 
#define uint unsigned int 
sbit lcden = P3^5; 
sbit lcdrw = P3^6; 
sbit lcdrs = P3^7; 
uchar table[10]; 
uchar i, j, flag; 
void delay(uint n) 
{ 
        uint x,y; 
        for( x = n; x > 0; x--) 
                for( y = 110; y > 0; y-- ); 
} 
//lcd寫命令函數(shù) 
void lcdwrite_com( uchar com ) 
{ 
        lcdrs = 0; 
        lcdrw = 0; 
        P0 = com; 
        delay(5); 
        lcden = 1; 
        delay(5); 
        lcden = 0; 
} 
//lcd寫數(shù)據(jù) 
void lcdwrite_date( uchar date ) 
{ 
        lcdrs = 1; 
        lcdrw = 0; 
        P0 = date; 
        delay(5); 
        lcden = 1; 
        delay(5); 
        lcden  = 0; 
} 
//lcd初始化 
void lcd_init() 
{ 
        lcden = 0; 
        lcdwrite_com( 0x38 );//顯示模式設(shè)置 
        lcdwrite_com( 0x0e );//顯示光標(biāo) 
        lcdwrite_com( 0x01 );//清屏 
        lcdwrite_com( 0x80 + 2 );//數(shù)據(jù)指針設(shè)置 
} 
//串口初始化 
void serial_init() 
{ 
        TMOD = 0x20; 
        TH1 = 0xfd;         //9600赫茲 
        TL1 = 0xfd; 
        TR1 = 1;        //開啟時(shí)間中斷 

        SCON = 0x50;//方式2 
        SM2 = 1;        //可以向cpu請(qǐng)求中斷 
        EA = 1;                //開總中斷 
        ES = 1;                //開串口中斷         
} 
void putchar( uchar ch )//發(fā)送數(shù)據(jù) 
{ 
        SBUF = ch; 
        while( !TI ); 
        TI = 0; 
} 
void main() 
{ 
        lcd_init(); 
        serial_init(); 
        while(1) 
        {         
                delay(20); 
                while( table[j] != '\0' && flag == 1 ) 
                { 
                        j = j >= 10 ? 0 : j; 
                        putchar( table[j] ); 
                        lcdwrite_date( table[j] ); 
                        j++; 
        //                delay(10); 
                } 
        } 
} 
void Serial() interrupt 4 
{ 
        RI = 0; 
        if( SBUF != '#')//遇到#終止寫 
        { 
                table[i] = SBUF; 
                i++; 
        } 
        else 
                flag = 1; 
}