pca_9555.h

别人的C51菜单程序

#ifndef _PCA_9555_H_
#define _PCA_9555_H_
#include "common.h"

#define WriteDeviceAddress_9555 	0x40
#define ReadDeviceAddress_9555 		0x41
#define Commond_input0  	0x00
#define Commond_input1  	0x01
#define Commond_output0  	0x02
#define Commond_output1  	0x03
#define Commond_polarity0  	0x04
#define Commond_polarity1  	0x05
#define Commond_config0  	0x06
#define Commond_config1  	0x07
extern void readregister(uchar data *) ;
extern void writeconfig(uchar,uchar);
extern void writeoutput(uchar,uchar);
extern void pca9555_init(void);
#endif