以下是单片机程序,请高手注释解释一下每句话的含义啊
#define SET_LE() GP4DAT = (GP4DAT | 0x00080000) //P4.3->LE
#define CLR_LE() GP4DAT = (GP4DAT & 0xFFF7FFFF)
#define SET_SCL() GP4DAT = (GP4DAT | 0x00100000) //P4.4->SCL
#define CLR_SCL() GP4DAT = (GP4DAT & 0xffefffff)
#define SET_DATA() GP4DAT = (GP4DAT | 0x00200000) //P4.5->DATA
#define CLR_DATA() GP4DAT = (GP4DAT & 0xffdfffff)
#define SET_DATA_OUT() GP4DAT = GP4DAT | 0x20000000;
#define SET_DATA_IN() GP4DAT = GP4DAT & 0xDFFFFFFF; |