key.h

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//--------------------------------------------------------------------------------
                       //按键处理
//--------------------------------------------------------------------------------
#ifndef  __KEY_H__
#define  __KEY_H__
//--------------------------------------------------------------------------------

//--------------------------------------------------------------------------------
#define uchar unsigned char 
#define SETBIT(x,y)   (x|=(1<<y))      //set bit y in byte x 
#define CLRBIT(x,y)   (x&=(~(1<<y)))   //clear bit y in byte xx 
//-------------------------------------------------------------------------------
uchar key(void);
//-------------------------------------------------------------------------------

#endif