《串口接收一串字符在1602上显示.docx》由会员分享，可在线阅读，更多相关《串口接收一串字符在1602上显示.docx（8页珍藏版）》请在三一办公上搜索。
1、串口接收一串字符在1602上显示#include<reg52.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned int#define INSTR P0sbit rs=P24;sbit rw=P25;sbit en=P26;/uchar code text1= this is first ;/uchar code text2=LCD1602 program ;char receive17; /串口接收缓存uchar b,j,flag;uchar csize=0,temp;bit fan;vo
2、id delay(uint m) /延时函数uint i,j;for(i=m;i>0;i-)for(j=1000;j>0;j-);void UART_init /串口初始化SCON=0x50;PCON&=0x3f;ES=1;EA=1;void time_init /定时器初始化TMOD=0x20;TH1=253;TL1=253;TR1=1;void write_code(uchar cod) /写指令delay(5);en=0;rs=0;rw=0;en=1;INSTR=cod;_nop_;en=0;void write_data(uchar dat) /写数据delay(5);en=0
3、;rs=1;rw=0;en=1;INSTR=dat;_nop_;en=0;rs=0;void busy_check/忙信号检测rs=0;rw=1;en=1;_nop_;while(INSTR&0x80)/忙信号检测关键en=0;_nop_;en=1;_nop_; void init1602/ 1602 初始化delay(15);write_code(0x38);write_code(0x38);write_code(0x38);busy_check;write_code(0x0c);busy_check;write_code(0x06);busy_check;write_code(0x01);
4、void write_byte(uchar x,bit y,uchar byte) /想指定地址写入数据x&=0x0f;if(y)x+=0x40;x+=0x80;busy_check;write_code(x);busy_check;write_data(byte);void write(uchar add,bit y,uchar *first)uchar a;a=add;for(j=0;j<b;j+)write_byte(a+,y,*(first+);b=0;a=0;void mainUART_init;time_init;init1602;while(1)if(flag=1)flag=0;write(0,fan,receive);if(fan)fan=0;void UATR interrupt 4if(RI)ES=0;temp=SBUF;receivecsize=temp;/csize+;if(receivecsize+=.)b=csize-1;flag=1;csize=0;if(temp=#)fan=1;csize=0;if(csize=17)csize=0;b=16;RI=0;ES=1;
