单片机程序

// 1602 2*16字符第一行0x80 第二行0xc0// 模式(km/h) 12.5kmh | 999.99km// 24C02存储 0x00-0x03: 99 99 99 99 cm// 0x2e,0x6b,0x6d,0x06,0x07,0x20,0x3d 0x30-0x39开始是数字0-9// . , k , m , ┗，/h ,black, =//------头--------------------------------------------------------//申明#include "REG2051.H"#include "INTRINS.H"#define uchar unsigned char#define uint unsigned int//轮周长1.98m及各位值 0.5ms取 1.98*(1/0.5)*1000*10#define girth 39600#define girth_h 1#define girth_l 98//单片机IO连接#define LCM0802B_IO P1sbit LCM0802B_RS = P3^7;sbit LCM0802B_RW = P3^5;sbit LCM0802B_EN = P3^4;sbit KEY = P3^3;sbit SIGN = P3^2;sbit AT24C02_SDA = P3^1;sbit AT24C02_SCL = P3^0;//液晶驱动函数定义void LCM_RD_BUSY(void); //读忙信号void LCM_WR_CMD(uchar); //写操作命令void LCM_WR_DAT(uchar); //写数据void LCM_WR(uchar,uchar); //输出一个字符//存储IC驱动函数定义void AT24C02_START(void); //开启void AT24C02_STOP(void); //停止void AT24C02_CK(void); //时钟void AT24C02_WR_byte(uchar); //写入单字节uchar AT24C02_RD_byte(void); //读入单字节uchar AT24C02_RD(uchar); //从24c02的地址address中读取一个字节数据void AT24C02_WR(uchar,uchar); //向24c02的address地址中写入一字节数据info //函数定义void _init(void); //软硬件初始化void AT24C02_WRAMD(void); //24c02写入RAM数据void _nus(uchar); //us延时void _nms(uchar); //ms延时void dis_dis(void); //距离数据输出//变量定义uchar d_var[4]={0,0,0,0}; //距离的cm值0x00-0x03双数计算uint timej; //时间周期个数uint int_tp; //周期个数传递bit flg_cal; //允许计算bit sf; //s指示标志uint sj; //s指示计数bit sen; //有更新数据//---- 中断 -----------------------------------------------------//500us周期定时函数void T0_SEV(void) interrupt 1 using 1{TR0 = 0; ET0 = 0;TH0 = 0xff; TL0 = 0x5a; //计时初值timej++; //超过3.5S无中断相应，即判断速度为0，则最低速度2.04km/h if(timej == 7000){int_tp = timej; timej = 0;flg_cal = 1;}if(sj>0){ sj--; }//s计数递减ET0 = 1; TR0 = 1;}//外部中断函数void Int0_SEV(void) interrupt 0 using 0{EX0 = 0;int_tp = timej; timej = 0;flg_cal = 1;//读取计数周期数EX0 = 1;}//------主体--------------------------------------------------------//主函数void main(){_init(); //初始化while(1){if(!KEY){_nms(2); //去抖延时if(!KEY){uchar key_tp = 200;EA = 0; timej = 0;do{ key_tp--; _nms(3); }while(!KEY&&key_tp>0); //长短按计时循环EA = 1;if(key_tp==0){d_var[0] = 0; d_var[1] = 0; d_var[2] = 0; d_var[3] = 0; //清零_nus(20); dis_dis(); //输出距离}//长按//短按长按都要写入数据sj = 3000; sf = 1;LCM_WR(0x80,0x06); //0x06AT24C02_WRAMD(); //24c02写入RAM数据//等待释放按键while(!KEY){ while(!KEY); _nms(2); }}}//按键功能，长按清除历程信息，短按切换ms与kmhif(flg_cal){ //清零输出十分位" 0.0"if(int_tp == 7000){LCM_WR(0x81,0x20); LCM_WR(0x82,0x30); LCM_WR(0x84,0x30); }else{//正常计算输出sen = 1;//速度if(int_tp>143){int_tp = girth/int_tp;int_tp = (int_tp*18)/5; // kmh=3.6*msLCM_WR(0x84,(int_tp%10)+0x30); //输出十分位int_tp = int_tp/10;LCM_WR(0x82,(int_tp%10)+0x30); //输出个位if(int_tp<10) LCM_WR(0x81,0x20); //输出十位0时清除else LCM_WR(0x81,(int_tp/10)+0x30); //输出十位}//在99.9km/h范围内//距离步长1.98md_var[3] += girth_l;if(d_var[3]>99){d_var[3]-=100; d_var[2]++;}d_var[2] += girth_h;if(d_var[2]>99){d_var[2]-=100;if(d_var[1]==99){d_var[1]=0;if(d_var[0]==99) d_var[0]=0;else d_var[0]++;}else d_var[1]++;}dis_dis(); //输出距离}int_tp = 0; flg_cal = 0;//复位}//输出计算的主要数据if(sj == 0){sj = 3000;if(sen){ //有更新数据才写入sen = 0;LCM_WR(0x80,0x06); //0x06sf = 1;AT24C02_WRAMD(); //写入存储器}}if(sf && sj<2000){sf = 0; LCM_WR(0x80,0x20);} //写存储器闪更新}//主循环}void _init(void){EA = 0; _nus(255); //等待外围设备完成加电//初始化液晶，显示"?"LCM_WR_CMD(0x01); //清屏幕0x01LCM_WR_CMD(0x38); //设置数据线模式0x38 8位两行 5X7LCM_WR_CMD(0x0C); //设置显示状态0x0C 整体显示开光标关光标闪烁关LCM_WR_CMD(0x06); //设置输入方式0x06 增量方式不移位LCM_WR_CMD(0x80); //设置光标初始位//LCM_WR(0x80,0x3f);//屏幕初始化输出"?"//输出 bike mileLCM_WR(0x80,0x3d); LCM_WR(0x81,0x62); LCM_WR(0x82,0x69); LCM_WR(0x83,0x6b);LCM_WR(0x84,0x65); LCM_WR(0x85,0x3d); LCM_WR(0x86,0x3d); LCM_WR(0x87,0x3d);//=bike=== LCM_WR(0xc0,0x3d) ;LCM_WR(0xc1,0x3d); LCM_WR(0xc2,0x3d); LCM_WR(0xc3,0x6d);LCM_WR(0xc4,0x69); LCM_WR(0xc5,0x6c); LCM_WR(0xc6,0x65); LCM_WR(0xc7,0x3d);//===mile= //初始化液晶自定义字符库LCM_WR_CMD(0x70); //自定义字符'┗' 在0x06LCM_WR_DAT(0x00); LCM_WR_DAT(0x00); LCM_WR_DAT(0x00); LCM_WR_DAT(0x10);LCM_WR_DAT(0x18); LCM_WR_DAT(0x1C); LCM_WR_DAT(0x1E); LCM_WR_DAT(0x00);LCM_WR_CMD(0x78); //自定义字符'/h' 在0x07LCM_WR_DAT(0x04); LCM_WR_DAT(0x14); LCM_WR_DAT(0x14); LCM_WR_DAT(0x16);LCM_WR_DAT(0x15); LCM_WR_DAT(0x15); LCM_WR_DAT(0x15); LCM_WR_DAT(0x00);//初始化24c02AT24C02_SCL = 1; _nop_(); AT24C02_SDA = 1; _nop_(); _nms(4);//读24c02到RAM 初始化 d_var[]d_var[0] = AT24C02_RD(0x00); d_var[1] = AT24C02_RD(0x01);d_var[2] = AT24C02_RD(0x02); d_var[3] = AT24C02_RD(0x03);if(d_var[0]>99 || d_var[1]>99 || d_var[2]>99 || d_var[3]>99){d_var[0] = 0; d_var[1] = 0; d_var[2] = 0; d_var[3] = 0;//清零AT24C02_WRAMD();}//错误数据判断读取24c02中的距离数据，如果有数据>99，则出错，复位0 KEY = 1; SIGN = 1;//串口初始化TMOD = 0x01; //定时中断0允许方式0 使能offTH0 = 0xff; TL0 = 0x5a; //500us (65536-166) /256=255 %256=90ET0 = 1; TR0 = 0;PX0 = 1; IT0 = 1; EX0 = 0; //外中断0 跳变触使能off//变量初始化timej = 0; int_tp = 0; flg_cal = 0;sf = 0; sj = 3000; sen = 0;_nms(255);//界面初始化LCM_WR_CMD(0x01); //清屏幕0x01LCM_WR(0x82,0x30); LCM_WR(0x83,0x2e); LCM_WR(0x84,0x30); //输出" 0.0" LCM_WR(0x85,0x6b); LCM_WR(0x86,0x6d); LCM_WR(0x87,0x07); //输出" kmh" LCM_WR(0xc3,0x2e); LCM_WR(0xc6,0x6b); LCM_WR(0xc7,0x6d); //输出" . km" dis_dis(); _nms(56);EX0 = 1; TR0 = 1; EA = 1; //开启各种中断 CPU中断使能 TR1 = 1;}//---- 硬件应用层驱动 ------------------------------------------------//距离数据显示void dis_dis(void){//高位3有数据，并且有两位if(d_var[0]>9){LCM_WR(0xc0,(d_var[0]/10)+0x30); LCM_WR(0xc1,(d_var[0]%10)+0x30);}else{//高位3只有低位有数据，或没有数据LCM_WR(0xc0,0x20);//高位3高位没有数据if(d_var[0]>0) LCM_WR(0xc1,d_var[0]+0x30);//高位3低位有数据else LCM_WR(0xc1,0x20);//高位3没有数据}LCM_WR(0xc2,(d_var[1]/10)+0x30);LCM_WR(0xc4,(d_var[1]%10)+0x30);LCM_WR(0xc5,(d_var[2]/10)+0x30);}//24c02写入RAM数据void AT24C02_WRAMD(void){uchar mem_wram;for(mem_wram=0;mem_wram<4;mem_wram++)AT24C02_WR(mem_wram,d_var[mem_wram]);}//短延时void _nus(uchar us){for(;us>0;us--);}//长延时4.6msvoid _nms(uchar ms){for(;ms>0;ms--)_nus(255);}/*----液晶驱动函数定义------------------------------------------------------------ void LCM_WR_CMD(uchar); //写操作命令void LCM_WR_DAT(uchar); //写数据void LCM_WR(uchar,uchar); //输出一个字符void LCM_RD_BUSY(void); //读忙信号--------------------------------------------------------------------------------*///读忙信号void LCM_RD_BUSY(void){uchar lcm_rdby = 0x00;LCM0802B_RS = 0; //RS 0LCM0802B_RW = 1; //RW 1LCM0802B_EN = 1; //EN 1 读忙信号LCM0802B_IO = 0xff;do{ lcm_rdby = LCM0802B_IO; }while(lcm_rdby&0x80); //MSB=0x80 _nop_();}//写操作命令void LCM_WR_CMD(uchar lcm_cmd){LCM_RD_BUSY();LCM0802B_RS = 0; //RS 0LCM0802B_RW = 0; //RW 0LCM0802B_EN = 1; //跳跃,写入数据LCM0802B_IO = lcm_cmd; _nop_();LCM0802B_EN = 0; _nop_();}//写数据void LCM_WR_DAT(uchar lcm_wrdat){LCM_RD_BUSY();LCM0802B_RS = 1; //RS 1LCM0802B_RW = 0; //RW 0LCM0802B_EN = 1; //跳跃,写入数据LCM0802B_IO = lcm_wrdat; _nop_();LCM0802B_EN = 0; _nop_();}//输出一个字符void LCM_WR(uchar lcm_xy,uchar lcm_dat){EA = 0;//设置光标位置LCM_WR_CMD(lcm_xy); //第一行0x80，第二行0xc0LCM_WR_DAT(lcm_dat);EA = 1;}/*---------------- 24C02驱动 --------------------------------------void AT24C02_START(void); //开启void AT24C02_STOP(void); //停止void AT24C02_CK(void); //时钟void AT24C02_WR_byte(uchar); //写入单字节uchar AT24C02_RD_byte(void); //读入单字节uchar AT24C02_RD(uchar); //从24c02的地址中读取一个字节数据void AT24C02_WR(uchar,uchar); //向24c02的地址中写入一字节数据-----------------------------------------------------------------*///24c02启动void AT24C02_START(){AT24C02_SDA = 1; _nop_(); AT24C02_SCL = 1; _nop_();AT24C02_SDA = 0; _nop_(); AT24C02_SCL = 0; _nop_();}//24c02停止void AT24C02_STOP(){AT24C02_SDA = 0; _nop_(); AT24C02_SCL = 1; _nop_(); AT24C02_SDA = 1; _nop_(); }//24c02写入单字节void AT24C02_WR_byte(uchar mem_wrbt){uchar mem_wrtp,mem_wrbtp;mem_wrbtp = mem_wrbt;for (mem_wrtp=8;mem_wrtp>0;mem_wrtp--){mem_wrbtp = mem_wrbtp<<1;AT24C02_SCL = 0; _nop_();AT24C02_SDA = CY; _nop_(); //(bit)(mem_wrbtp&0x80) AT24C02_SCL = 1; _nop_();}AT24C02_SCL = 0; _nop_(); AT24C02_SDA = 1; _nop_(); }//24c02读入单字节uchar AT24C02_RD_byte(){uchar mem_rdtp,mem_rdbit,mem_rdbt=0;AT24C02_SCL = 0; _nop_(); AT24C02_SDA = 1;for(mem_rdtp=8;mem_rdtp>0;mem_rdtp--){_nop_(); AT24C02_SCL = 1; _nop_();if (AT24C02_SDA) mem_rdbit = 1;else mem_rdbit = 0;mem_rdbt=(mem_rdbt<<1)|mem_rdbit;AT24C02_SCL = 0;}_nop_();return mem_rdbt;}//24c02时钟等待void AT24C02_CK(){uchar mem_ck = 255;AT24C02_SCL = 1; _nop_();while((AT24C02_SDA)&&(mem_ck>0)) mem_ck--;AT24C02_SCL = 0; _nop_();}//24c02读入uchar AT24C02_RD(uchar mem_rdaddr){uchar mem_rd; //在刚启动时使用，故EA不需复位AT24C02_START();AT24C02_WR_byte(0xa0); AT24C02_CK();AT24C02_WR_byte(mem_rdaddr); AT24C02_CK();AT24C02_START();AT24C02_WR_byte(0xa1); AT24C02_CK();mem_rd = AT24C02_RD_byte();AT24C02_STOP(); _nms(4);return mem_rd;}//24c02写入void AT24C02_WR(uchar mem_wraddr,uchar mem_wrinfo) {EA = 0; AT24C02_START();AT24C02_WR_byte(0xa0); AT24C02_CK();AT24C02_WR_byte(mem_wraddr); AT24C02_CK();AT24C02_WR_byte(mem_wrinfo); AT24C02_CK();AT24C02_STOP(); EA=1;_nms(3);}//----END---------------------------------------------------------------。