步进电机的单片机控制.doc

用MCS-51系列单片机作为控制器；采用两相双极性步进电机为控制对象；采用L297/298驱动芯片为步进电机驱动器；用加速、减速、正转、反转4个键进行相应的控制；用LCD显示步进的电机的工作状态。主程序：#includeLCD1602.hsbit s1=P10; /定义键与51单片机连接的引脚sbit s2=P11;sbit s3=P12;sbit s4=P13;sbit P3_6=P36;sbit P3_7=P37;uchar Speed;uchar SPEEDdis4; /存放转换成液晶显示字符（ASIIC）的数组void delayms (uint x) /延时子函数 uchar i,j; for (i=x;i-;i0) for (j=0; j50)/加速Speed=Speed-10; else Speed=50; s4=1;s2=1;s3=1;disspeed(); if(s2=0) /减速 if(Speed150) Speed=Speed+10; else Speed=150; s1=1; s3=1; s4=1; disspeed(); if(s3=0) P3_6=1; /正转s1=1;s2=1;s4=1;LCD_Prints(5,1,zhengzhuan); if(s4=0) P3_6=0; /反转s1=1;s2=1;s3=1;LCD_Prints(5,1,fanzhuan ); LCD程序：#include #include /此头文件定义有_nop_（）函数#includeLCD1602.huchar LCD_Wait()LcdRs=0;LcdRw=1; _nop_();LcdEn=1; _nop_(); LcdEn=0;return DBPort;#define LCD_COMMAND 0 /命令#define LCD_DATA 1 /数据#define LCD_CLEAR_SCREEN 0x01 /清屏#define LCD_HOMING 0x02 /光标返回点void LCD_Write(bit style,uchar input) LcdEn=0;LcdRs=style; LcdRw=0; _nop_();DBPort=input; _nop_();LcdEn=1;_nop_();LcdEn=0;_nop_();LCD_Wait(); #define LCD_SHOW 0x04 /显示开#define LCD_HIDE 0x00 /显示关#define LCD_CURSOR 0x02 /显示光标#define LCD_NO_CURSOR 0x00 /无光标#define LCD_FLASH 0x01 /光标闪动#define LCD_NO_FLASH 0x00 /光标不闪动void LCD_SetDisplay(uchar DisplayMode)LCD_Write(LCD_COMMAND,0x08|DisplayMode);#define LCD_AC_UP 0x02 /地址计数器递增的方式#defineLCD_AC_DOWN 0x00 /为缺省设置#defineLCD_MOVE 0x01 /画面可平移#defineLCD_NO_MOVE 0x00 /画面不可平移void LCD_SetInput(uchar InputMode)LCD_Write(LCD_COMMAND,0x04|InputMode);void LCD_Initial()LcdEn=0;LCD_Write(LCD_COMMAND,0x38); /8位数据端口，2行显示，5*7点阵LCD_Write(LCD_COMMAND,0x38); /此句不能省LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); /开启显示，无光标LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); /清屏LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); /AC递增，画面不动void LCD_Pos(uchar x,uchar y)if(y=0) LCD_Write(LCD_COMMAND,0x80|x);if(y=1)LCD_Write(LCD_COMMAND,0x80|(x-0x40);void LC