北航人 自我总结单片机 与控制步进电机.doc

这是我自己做过的。源码都给你了#include#include#include#include#define uchar unsigned char#define uint unsigned intuint count; /当前计数值uint distance;bit intt=1;unsigned char cont=0;unsigned char co=0;uchar buf;/uchar m,lm,cm;/*针脚定义*/sbit rect_wave=P20; /晶振控制信号sbit RS=P10;sbit RW=P11;sbit EN=P12;sbit CLR=P13;sbit DATA=P14;sbit CLK=P15;sbit d=P21;sbit cp=P22;sbit dir=P23;/*/*函数声明*/void time0over(void); /定时器计时程序void clrlcd(void); /clr LCDvoid c_send(unsigned char y); /发命令void reset(void); / reset LCDvoid d_send(unsigned char x); /发数据void pos(unsigned char pos); /设定显示位置void l_delay(unsigned int t); /长延时void trans(j);void ret(void); /初始化系统void retcont(void); /定时器复位void math(void); /计算测量距离/*/void init(void) TH1=0xf3; TL1=0xf3; PCON=0x80; TR1=1; SCON=0x50; /*串口初始化设置，波特率4800BPS*/*/void send(uchar dat) /*发送子程序*/ /uchar i; /*发送一个数据*/ SBUF=dat; while(TI=0); TI=0; /*/void turn (void) /电机转动控制 unsigned char x; cont+; cp=cp; l_delay(50); cp=cp; co+; if(co = 3) d=d; if(co = 4) d=d; co=0; if (cont = 200) /判断是否进行反转复位 dir=dir; cont=0; for(x=0;x 200;x+) cp=cp; l_delay(5); cp=cp; co+; if(co = 3) d=d; if(co = 4) d=d; co=0; dir=dir; cont=0; /*子程序*/void int0 () interrupt 0 /中断0服务程序 EX0=0; /关闭中断 TR0=0; /关闭定时器 TF0=0; /标志位清零 rect_wave=0; /停止发送超声波 intt=0; void work(void) if(!intt) intt=1; if (distance 400) buf=distance; send(buf); turn(); math(); /计算所测得的距离 l_delay(5); /延时 retcont(); /定时器复位 rect_wave=1; count=0; void math(void) /计算所测得的距离 uchar m,lm,cm; cm=distance%10; /取距离的最低位 distance=distance/10; /取距离的次高位 lm=distance%10; distance=distance/10; /取距离的最高位 m=distance%10; clrlcd(); /输出计算结果 pos(0); d_send(d); d_send(i); d_send(s); d_send(=); /pos(4); d_send(m+0x30); d_send(lm+0x30); d_send(cm+0x30); d_send(c); d_send(m); l_delay(500);void time0over(void) /定时器计时程序 TF0=0; count+; distance=count; /*void trans(j) switch(j) case 0: d_send(0);break; case 1: d_send(1);break; case 2: d_send(2);break; case 3: d_send(3);break; case 4: d_send(4);break; case 5: d_send(5);break; case 6: d_send(6);break; case 7: d_send(7);break; case 8: d_send(8);break; case 9: d_send(9);break; */delay() /延时 int i; for(i=0;i1000;i+);void l_delay(unsigned int t) /延时 unsigned int p; unsigned int j; for(j=0;jt;j+) for(p=0;p1000;p+); void reset(void) / reset LCD delay(); c_send(0x38); c_send(0x01); c_send(0x06); c_send(0x0c); c_send(0x80);void clrlcd(void) / clr LCD delay(); c_send(0x01);void pos(unsigned char pos) /设定显示位置 c_send(pos | 0x80);void c_send(unsigned char y) /发命令 unsigned char i; EN=1; RS=0; RW=0; for(i=0;i8;i+) if(_crol_(y,i)&0x80) DATA=1; else DATA=0; CLK=0; CLK=1; EN=0; delay();void d_send(unsigned char x) /发数据 unsigned char i; EN=1; RS=1; RW=0; for(i=0;i8;i+) if(_crol_(x,i)&0x80) DATA=1; else DATA=0; CLK=0; CLK=1; EN=0; delay();void ret(void) /初始化计数器 TMOD=0x22; /设置定时器计数器1为工作方式2 TH0=0xc6; /设置计数初值高字节 TL0=0xc6; /设置计数初值低字节 count=0; IE=0x00; /禁止中断 TF0=0; /溢出标志位清零 TR0=1; /打开定时器1 rect_wave=1; EA=1; /打开中断 IP=0x01; /外部中断0为高中断优先级 IT0=0; /外部中断低电平触发? EX0=1;void retcont(void) TF0=0; /溢出标志位清零 TR0=1; /打开定时器1 EA=1; /打开中断 IP=0x01; /外部中断0为高中断优