电机模块开发：

L9110s：

接通VCC，GND 模块电源指示灯亮。

IA1输入高电平，IA1输入低电平，【OA1 OB1】电机正转；
IA1输入低电平，IA1输入高电平，【OA1 OB1】电机反转；
IA2输入高电平，IA2输入低电平，【OA2 OB2】电机正转；
IA2输入低电平，IA2输入高电平，【OA2 OB2】电机反转；

与C51连接：

验证正反转：

#include "reg52.h"
#include "intrins.h"//右轮
sbit RightCon1A = P3^2;
sbit RightCon1B = P3^3;//左轮
sbit LeftCon1A = P3^4;
sbit LeftCon1B = P3^5;void Delay1000ms()		//@11.0592MHz
{unsigned char i, j, k;_nop_();i = 8;j = 1;k = 243;do{do{while (--k);} while (--j);} while (--i);
}//前进
void go_Forward()
{RightCon1A = 0;RightCon1B = 1;LeftCon1A = 0;LeftCon1B = 1;
}//后退
void go_Back()
{RightCon1A = 1;RightCon1B = 0;LeftCon1A = 1;LeftCon1B = 0;
}//左转
void go_Left()
{RightCon1A = 0;RightCon1B = 1;LeftCon1A = 0;LeftCon1B = 0;
}//右转
void go_Right()
{RightCon1A = 0;RightCon1B = 0;LeftCon1A = 0;LeftCon1B = 1;
}void main()
{while(1){go_Forward();Delay1000ms();Delay1000ms();go_Back();Delay1000ms();Delay1000ms();go_Left();Delay1000ms();Delay1000ms();go_Right();Delay1000ms();Delay1000ms();}
}