//-------------------------------------------------------------------------------------
unsigned char IfInterTimeOK(tagInterTime * ptime) {
if(ptime->ucDelay == 0) return 0;
ptime->ucCount = (ptime->ucCount) + 1;
if(ptime->ucCount >= ptime->ucDelay) {
ptime->ucCount = 0;
return 1;
}
return 0;
}
//-----------------------------------------------------------------
typedef struct {
unsigned char ucDelay, ucCount;
}tagInterTime; // Control the interface control time
unsigned char IfInterTimeOK(tagInterTime * ptime);// 1:Action OK
//---------------------------------------------------------------------------------
#define __INTERTIME_DECL(x, y) SUBLIB_EXT tagInterTime g_it##x;
#define __IT_START(x, y) (g_it##x##.ucDelay = y, g_it##x##.ucCount = y)
#define __IT_STOP(x, y) g_it##x##.ucDelay = 0
#define __IT_OK(x, y) IfInterTimeOK(&g_it##x)
//------------------------------------------------------------------------------
#define IT_DECL(x) __INTERTIME_DECL(x)
#define IT_START(x) __IT_START(x)
#define IT_STOP(x) __IT_STOP(x)
#define IT_OK(x) __IT_OK(x)
#define AAA A, 25
下面这是用法，不知道是什么意思？
IT_START(AAA);
if(IT_OK(AAA)) IT_START(AAA);
IT_STOP(AAA);
忘c语言高手指教一下