io.h

单片机制作PLC

#ifndef	 _IO_H
#define  _IO_H

#include <REGX52.H>

/*输入映像存储区*/
//   输入点			输入端口			输入映像
//	   X0				P0.0			InMap0
//     X1				P0.1			InMap1
//	   X2				P0.2			InMap2
//     X3				P0.3			InMap3
#define   In0    P0_0
#define   In1    P0_1
#define   In2    P0_2
#define   In3    P0_3

extern  bit  InMap0;
extern  bit  InMap1;
extern  bit  InMap2;
extern  bit  InMap3;

/*输出映像存储区*/
//   输入点			输出端口			输出映像
//	  Y0			P1.0				OutMap0
//    Y1			P1.1				OutMap1
//	  Y2			P1.2				OutMap2
//    Y3			P1.3				OutMap3
#define   Out0    P1_0
#define   Out1    P1_1
#define   Out2    P1_2
#define   Out3    P1_3

extern  bit    OutMap0;
extern	bit    OutMap1;
extern	bit    OutMap2;
extern	bit    OutMap3;

#endif