00001 00003 #include "t89c51cc02.h" 00004 #include "datatypes.h" 00005 00007 #define PHOTOSENSOR_OFF 0x03 00008 00009 #define Photosensor_PowerOff() P3=(P3 & PHOTOSENSOR_OFF) 00010 00011 #define Photosensor_select(s) psensor=s; P3=((P3 & PHOTOSENSOR_OFF)|psensor_select[psensor & 0x07]) 00012 00013 #define PHOTOSENSORS_NR 5 00014 00015 void Photosensor_init(void); 00016 void Photosensor_toggle(void); 00017 WORD Photosensor_read(BYTE); 00018 00019