#ifdef ANTENNA_SWITCH
#ifdef ANT_CTL2
#define MC13192_ANT_CTRL  TBD_PTBD4
#define MC13192_ANT_CTRL2  TBD_PTBD5 // Second Control line used in MC13192DS12
#define MC13192_ANT_CTRL_PORT  TBDD_PTBDD4
#define MC13192_ANT_CTRL2_PORT  TBDD_PTBDD5 // Second Control line used in MC13192DS12
#define ANT_CTRL_OFF 0 // Logic low is off
#define ANT_CTRL_ON 1 // Logic high is on
#else
#define MC13192_ANT_CTRL  TBD_PTBD4
#define MC13192_ANT_CTRL2  TBD_PTBD4 // Second Control line not used in MC13192EVB
#define MC13192_ANT_CTRL_PORT  TBDD_PTBDD4
#define MC13192_ANT_CTRL2_PORT  TBDD_PTBDD4 // Second Control line not used in MC13192EVB
#define ANT_CTRL_OFF 0 // Logic low is off
#define ANT_CTRL_ON 1 // Logic high is on
#endif ANT_CTL2
#endif ANTENNA_SWITCH
这里面MC13192_ANT_CTRL具体是什么含意啊?,这段程序的目的是干什么的?
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