键盘控制步进电机正反转和调速c语言程序 #include //51芯片管脚定义头文件 #include //内部包含延时函数 _nop_(); #define uchar unsigned char #define uint unsigned int uchar code FFW[8]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09}; uchar code REV[8]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01}; sbit K1 = P3^5; //正转 sbit K2 = P3^3; //反转 sbit K3 = P3^5; sbit K4 =P3^6 ; sbit K5 =P3^7; //停止