51单片机基于HC-06的蓝牙串口通信(12864液晶显示)

/*********************************** 串口蓝牙接法 RXD -> P3.1 TXD -> P3.0 18B20接P2.2(见ds18b20.h头文件) ************************************/ #include<reg51.h> #include<intrins.h> #include<stdlib.h> #include"ds18b20.h" #define uint unsigned int #define uchar unsigned char sbit led1 = P1^0; sbit led2 = P1^1; sbit led3 = P1^2; sbit led4 = P1^3; sbit s4 = P3^2; //开关触发外部中断0 sbit s5 = P3^3; //开关触发外部中断1 sbit lcden=P3^4; sbit lcdrw=P3^6; sbit lcdrs=P3^5; //sbit psb=P3^1; //串并方式控制 sbit dula=P2^6; sbit wela=P2^7; sbit beep=P2^3; uchar shi,ge; //分离成十位和个位 uchar i,j,t,count,rec=0; //count是定时器1计数变量/rec是接收变量 bit flag,open_flag,close_flag,end_flag;//标志/open标志/close标志/串口结束标志 uchar SenData[10],Sentmp[10]; //接收字符串/暂存字符串 uchar tmp[3]; uchar dis1[]="温度测试程序V1.7"; //第一行显示 uchar code dis2[]={"温度: "}; //第二行显示 uchar code dis3[]={"接收: "}; //第三行显示 uchar code dis4[]={"模式: "}; //第四行显示 uchar dis5[]={"HIGH"}; //温度报警显示 uchar close[]={"掉电模式"}; uchar open[]={"运行模式"}; uchar clear[]={" "}; uchar code table[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};//0-9 void delayms(uint xms) { uint i,j; for(i=xms;i>0;i--) for(j=110;j>0;j--); } /*写指令(命令)到LCD*/ void write_cmd(uchar cmd) { lcdrs=0; lcdrw=0; lcden=0; P0=cmd; delayms(5); lcden=1; delayms(5); lcden =0; } /*写显示数据到LCD*/ void write_dat(uchar dat) { lcdrs=1; lcdrw=0; lcden=0; P0=dat; delayms(5); lcden=1; delayms(5); lcden=0; } /*写显示数据到LCD的第x行第y列*/ void gotoxy(uchar x,uchar y) { uchar pos; if(x==0) x=0x80; else if(x==1) x=0x90; else if(x==2) x=0x88; else if(x==3) x=0x98; pos=x+y; write_cmd(pos); } void lcd_init() { //psb=1; //并口方式 write_cmd(0x30); delayms(5); write_cmd(0x0c); //显示开,关光标 delayms(5); write_cmd(0x01); //清屏 delayms(5); } void keyscan() { /********************* if(s4==0) { delayms(5); if(s4==0) { //beep=0; //蜂鸣器响 while (!s4); //按键释放确认 //beep=1; //蜂鸣器关 } }*/ if(s5==0) { delayms(5); if(s5==0) { led1=0; led2=0; led3=0; led4=0; while(!s5); led1=1; led2=1; led3=1; led4=1; } } } void init() { TMOD = 0x21; // 定时器1工作于8位自动重载模式, 用于产生波特率 0010 TH1 = 0xFD; //11.0592MHZ晶振 波特率9600 TL1 = 0xFD; TH0=(65536-50000)/256; TL0=(65536-50000)%256; SCON = 0x50; // 设定串行口工作方式 0101 0000 //SM0=0;SM1=1;REN=1; PCON &= 0xef; // 波特率不倍增 1110 1111 TR0 = 1; TR1 = 1; // 启动定时器1 ES = 1; EA = 1; EX0 = 1; EX1 = 1; ET0 = 1; //IE = 0x00; // 禁止任何中断 } void main() { uchar i; init(); lcd_init(); while(1) { keyscan(); gotoxy(0,0); i=0; while(dis1[i]!='\0') { write_dat(dis1[i]); i++; } gotoxy(1,0); //显示第二行第一个字符 i=0; while(dis2[i]!='\0') { write_dat(dis2[i]); i++; } gotoxy(2,0); i=0; while(dis3[i]!='\0') { write_dat(dis3[i]); i++; } gotoxy(3,0); i=0; while(dis4[i]!='\0') { write_dat(dis4[i]); i++; } /***********读取一次温度数据**************************/ ReadTemp(); if((b&0xf8)!=0x00)//判断高五位 得到温度正负标志 { fuhao=1; a=~a; //低4位取反 b=~b; //高4位取反 tltemp=a+1; //低位加1 a=tltemp; if(tltemp>255) b++; //如果低8位大于255，向高8位进1 temp_value=b*16+a/16; //实际温度值=(b*256+a)/16,即：b*16+a/16 //这样得出的是温度的整数部分,小数部分被丢弃了 } else fuhao=0; /*******************写符号***************************/ if(fuhao==1) { gotoxy(1,3); write_dat(0x2d); //写'-' shi=temp_value/10; ge=temp_value%10; write_dat(0x30+shi); write_dat(0x30+ge); } else { gotoxy(1,3); write_dat(0x2b); //写'+' shi=temp_value/10; ge=temp_value%10; write_dat(0x30+shi); write_dat(0x30+ge); } /**************温度判断*********************/ if(temp_value>=temp_max) { beep = 1; gotoxy(1,5); i=0; while(dis5[i]!='\0') { write_dat(dis5[i]); i++; } } else { //beep = 0; gotoxy(1,5); i=0; //while(clear[i]!='\0') while(i<5) { write_dat(clear[i]); i++; } } /************串口判断*********************/ if (flag==1) { ES=0; if(fuhao==1) tmp[0] = 0x2d; else tmp[0] = 0x2b; tmp[1] = 0x30+shi; tmp[2] = 0x30+ge; for(i=0;i<3;i++) //发送字符串 { SBUF=tmp[i]; while(!TI); TI=0; } SBUF=0x0d; //发送回车 while(!TI); TI=0; flag=0; ES=1; /*每隔一段时间清一次接收数据 gotoxy(2,3); i=0; while(clear[i]!='\0') { write_dat(clear[i]); i++; }*/ gotoxy(2,3); i=0; while(SenData[i]!='\0') { write_dat(SenData[i]); i++; } //write_dat(SenData); } /*************模式判断**********************/ if(open_flag==1&&close_flag==0) { gotoxy(3,3); i=0; while(open[i]!='\0') { write_dat(open[i]); i++; } } else if(close_flag==1&&open_flag==0) { gotoxy(3,3); i=0; while(close[i]!='\0') { write_dat(close[i]); i++; } PCON = 0x02; } /* if(*SenData == "clear") { gotoxy(3,3); i=0; while(clear[i]!='\0') { write_dat(clear[i]); i++; } PCON = 0x01; }*/ } } void S4_INT0() interrupt 0 { open_flag=1; close_flag=0; PCON = 0; } void S5_INT1() interrupt 2 { //PCON = 0x02; open_flag=0; close_flag=1; } void timer() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; count++; if(count==20) { count=0; rec=0; //for(j=0;j<10;j++) // Sentmp[j]=0x20; } } /**************************************************** 串口中断程序(能接收字符串) ******************************************************/ void ser(void) interrupt 4 { //if(RI == 1) //RI接受中断标志 //{ if(rec==0) { for(j=0;j<10;j++) SenData[j]=clear[j]; rec++; } if(rec!=0&&rec<=10) { RI = 0; //清除RI接受中断标志 SenData[rec-1] = SBUF; //SUBF接受/发送缓冲器 //SenData[rec]=Sentmp[rec]; flag=1; rec++; } //} /************************ RI=0; t=0; SenData[t]=SBUF; for(t=0;t<4;t++) SenData[t+1]=SenData[t]; flag=1; */ }