电路+程序基于单片机的四相步进电机控制设计 _步进电机

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步进电机控制应用实例
【电路+程序基于单片机的四相步进电机控制设计】- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
设计要求：

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设计思路：

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元件清单：
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实现代码：

#include typedef unsigned char uchar;uchar direction = 0;//0为正转,1为反转uchar onoff = 0; //关为0,开为1uchar n = 0; //每次定时器中断触发时n++,当n==max时电机转动1/4uchar max = 10;uchar index = 0; //通过index指示电机转动,AB,BC,CD,DAsbit LED = P3 ^ 7; //当n==max时LED闪烁提示int main(){/* LED */P2 = 0xff;/* 初始化中断 */EA = 1;EX0 = 1; //要用到的中断是两个外部中断和定时器中断0IT0 = 1;EX1 = 1;IT1 = 1;ET0 = 1;/* 定时器0 */TMOD = 0x01; //使用定时器0,方式1TH0 = (65536 - 10000) / 256; //12MHz晶振下,定时器为10ms触发中断,更方便观察转动情况TL0 = (65536 - 10000) % 256;TR0 = 1;while(1){switch(P0){case 0xfe: //11111110max = 1;P2 = 1;break;case 0xfd: //11111101max = 10;P2 = 2;break;case 0xfb: //11111011max = 50;P2 = 3;break;case 0xf7: //11110111max = 100;P2 = 4;break;}}}void Stop()interrupt 0{onoff++;if (onoff > 1)onoff = 0;}void int1()interrupt 2{direction++;if (direction > 1)direction = 0;}void delay50ms(void){unsigned char a, b;for(b = 173; b > 0; b--)for(a = 143; a > 0; a--);}void time()interrupt 1{TH0 = (65536 - 10000) / 256;TL0 = (65536 - 10000) % 256;if (onoff == 1) //在开状态下{if (n == max) //设定档位速度,经过了max次中断后,步进电机转1/4圈{LED = 0; //每次n==max时LED闪烁delay50ms();LED = 1;if (direction == 0){switch(index) //正转时以AB,BC,CD,DA顺序{case 0:P1 = 0x03;break; //00000011 AB高电平case 1:P1 = 0x06;break; //00000110 BC高电平case 2:P1 = 0x0c;break; //00001100 CD高电平case 3:P1 = 0x09;break; //00001001 DA高电平}index ++; if (index == 4) //步进电机转完一圈时index清零index = 0;n = 0; //到达max,n重置为0}if (direction == 1){switch(index) //反转时以DA,CD,BC,AB顺序{case 0:P1 = 0x09;break;case 1:P1 = 0x0c;break;case 2:P1 = 0x06;break;case 3:P1 = 0x03;break;}index ++;if (index == 4)index = 0;n = 0;}else n = 0;}n++; //n!=max时,n++}else n = 0; //在关状态下,n始终为0,无法触发电机转动}

电路+程序 基于单片机的四相步进电机控制设计

电路+程序基于单片机的四相步进电机控制设计