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();
	}
}