课设基于单片机的直流电动机控制

#include <regx52.h> #include "lcd.h" #include "lcdoyyh.h" typedef unsigned char u8; typedef unsigned short u16; int sprintf(char *buffer, const char *format, ...); char str[4]; sbit IN0=P2^0; sbit IN1=P2^1; sbit E =P2^2; sbit LED=P2^3; sbit k1=P3^0; sbit k2=P3^1; sbit k3=P3^2; sbit k4=P3^3; //定义按键端口 #define KEY1 1 #define KEY2 2 #define KEY3 3 #define KEY4 4 char a1,b1,c1; u8 stop_flag; u8 pn_flag; int speed; u8 timenum=0; u8 valueh[]={0xf8,0xe0}; u8 valuel[]={0x30,0xc0}; u16 count=0; void Delay_ms(unsigned int n); //按键扫描 //mode=0 单次 1：连续 u8 KeyScan(u8 mode) { static u8 keyen=1; if(mode==1) { keyen=1; } if(keyen==1&&(k1==0||k2==0||k3==0||k4==0)) { Delay_ms(10); //消抖处理 keyen=0; if(k1==0)return KEY1; else if(k2==0)return KEY2; else if(k3==0)return KEY3; else if(k4==0)return KEY4; } else if(k1==1&&k2==1&&k3==1&&k4==1) { keyen=1; } return 0; } void LcdGotoXY(uchar line,uchar column) { // 第一行 if(line==0) LcdWriteCom(0x80+column); // 第二行 if(line==1) LcdWriteCom(0x80+0x40+column); } /*********************************************************/ // 液晶输出字符串函数 /*********************************************************/ void LcdPrintStr(uchar *str) { while(*str!='\0') LcdWriteData(*str++); } //更改名字,启动界面 void LcdShowInit() { LcdGotoXY(0,0); LcdPrintStr(" Hi,Name "); LcdGotoXY(1,0); LcdPrintStr(" Welcome. "); } void LcdShowInit2() { LcdGotoXY(0,0); LcdPrintStr("Duty :000 P "); LcdGotoXY(1,0); LcdPrintStr("stop_start: stop"); } void Lcdclear() { LcdGotoXY(0,0); LcdPrintStr(" "); LcdGotoXY(1,0); LcdPrintStr(" "); } //延迟 n-ms void Delay_ms(unsigned int n) //@12MHz { u8 i, j; u16 k; for(k=0;k<n;k++) { i = 2; j = 239; do { while (--j); } while (--i); } } //正反转控制 void motor_N() { IN0=0; IN1=1; } void motor_P() { IN0=1; IN1=0; } //20ms定时 void init_timer() { TMOD=0X01; TH0=(65536-20)/256;//20us TL0=(65536-20)%256; ET0=1; EA=1; TR0=1; IN1=0; } void key1x() { stop_flag++; if(stop_flag==2) stop_flag=0; if(stop_flag==0) LED=0,LcdGotoXY(1,11),LcdPrintStr(" stop"); else LED=1,LcdGotoXY(1,11),LcdPrintStr("start"); } void key2x() { pn_flag=!pn_flag; if(pn_flag==0) motor_P(),LcdGotoXY(0,13),LcdPrintStr("P"); else motor_N(),LcdGotoXY(0,13),LcdPrintStr("N"); } void key3x() { speed+=10; if(speed>=100) speed=100; a1=speed/100; b1=(speed%100)/10; c1=speed%10; str[3] = '\0'; // 确保字符串结尾有空字符'\0' str[2] = c1 + '0'; // 个位数转换为字符 str[1] = b1 % 10 + '0'; // 十位数转换为字符 str[0] = a1 + '0'; // 百位数转换为字符 LcdGotoXY(0,6),LcdPrintStr(str); } void key4x() { speed-=10; if(speed<=0) speed=0; a1=speed/100; b1=(speed%100)/10; c1=speed%10; str[3] = '\0'; // 确保字符串结尾有空字符'\0' str[2] = c1 + '0'; // 个位数转换为字符 str[1] = b1 % 10 + '0'; // 十位数转换为字符 str[0] = a1 + '0'; // 百位数转换为字符 LcdGotoXY(0,6),LcdPrintStr(str); } void main() { u8 key; LED=0; LcdInit(); LcdShowInit(); Delay_ms(1000); Lcdclear(); LcdShowInit2(); init_timer(); while(1) { key=KeyScan(0); switch(key){ case 1: key1x(); break; case 2: key2x(); break; case 3: key3x(); break; case 4: key4x(); break; default:break; } } } void timer_isr() interrupt 1 { timenum+=10; if(timenum>=100) timenum=0; if((speed>timenum)&&stop_flag) E=1; else E=0; }