main.h
#ifndef __MAIN_H__
#define __MAIN_H__
#define _Nop() _nop_()
#define uint unsigned int
#define uchar unsigned char
/********************电机驱动端口**********************/
sbit PWM1 = P3^0;
sbit PWM4 = P3^5;
sbit PWM2 = P3^1;
sbit PWM3 = P3^4;
/********************键盘接口*************************/
#define LEFT_KEY (!(P2_0))
#define UP_KEY (!(P2_1))
#define DOWN_KEY (!(P2_2))
#define RIGHT_KEY (!(P2_3))
#endif
