51单片机两相四线步进电机程序

这里是一个简单的使用 51 单片机控制两相四线步进电机的程序：

sbit Coil_A1 = P1^0;
sbit Coil_A2 = P1^1;
sbit Coil_B1 = P1^2;
sbit Coil_B2 = P1^3;

void main() {
  Coil_A1 = 0;
  Coil_A2 = 0;
  Coil_B1 = 0;
  Coil_B2 = 0;

  while (1) {
    // 步进电机正转
    Coil_A1 = 1;
    Coil_A2 = 0;
    Coil_B1 = 1;
    Coil_B2 = 0;
    delay(1000);

    // 步进电机停止
    Coil_A1 = 0;
    Coil_A2 = 0;
    Coil_B1 = 0;
    Coil_B2 = 0;
    delay(1000);

    // 步进电机反转
    Coil_A1 = 0;
    Coil_A2 = 1;
    Coil_B1 = 0;
    Coil_B2 = 1;
    delay(1000);

    // 步进电机停止
    Coil_A1 = 0;
    Coil_A2 = 0;
    Coil_B1 = 0;
    Coil_B2 = 0;
    delay(1000);
  }
}

这个程序与 Arduino 控制器的程序类似，也是通过交替地激活两相四线步进电机的两组线圈（A组和B组），来实现正转、停止和反转操作。不同的是，这个程序使用了 51 单片机的 IO 引脚来控制步进电机的线圈。具体的操作顺序和延迟时间也可以根据具体需求进行修改。