从串口调试工具发送一字符串到单片机，在lcd1602上显示.txt

从串口调试工具发送一字符串到单片机

/*==================================== 
*名称：lcd_str.c 
*功能：从串口调试工具发送一字符串到单片机，在lcd1602上显示【未加入校验】 
*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写命令函数 
void lcdwrite_com( uchar com ) 
{ 
        lcdrs = 0; 
        lcdrw = 0; 
        P0 = com; 
        delay(5); 
        lcden = 1; 
        delay(5); 
        lcden = 0; 
} 
//lcd写数据 
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 );//显示模式设置 
        lcdwrite_com( 0x0e );//显示光标 
        lcdwrite_com( 0x01 );//清屏 
        lcdwrite_com( 0x80 + 2 );//数据指针设置 
} 
//串口初始化 
void serial_init() 
{ 
        TMOD = 0x20; 
        TH1 = 0xfd;         //9600赫兹 
        TL1 = 0xfd; 
        TR1 = 1;        //开启时间中断 

        SCON = 0x50;//方式2 
        SM2 = 1;        //可以向cpu请求中断 
        EA = 1;                //开总中断 
        ES = 1;                //开串口中断         
} 
void putchar( uchar ch )//发送数据 
{ 
        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#终止写 
        { 
                table[i] = SBUF; 
                i++; 
        } 
        else 
                flag = 1; 
}