《嵌入式固件开发》一书的源码

				#include "config.h"				#include "genlib.h"				#include "stddefs.h"								char *MstatHelp[] = {				    "Monitor status",				    "-[b:]",				    " -b {baud}  set baud rate",				    0,				};								int				Mstat(int argc,char *argv[])				{				    extern  int InitUART(int);				    void    mstatshow(void);				    int     opt;								    /* If no args, just dump current status. */				    if (argc == 1) {				        mstatshow();				        return(0);				    }								    while ((opt=getopt(argc,argv,"b:")) != -1) {				        switch(opt) {				        case 'b':				            InitUART(atoi(optarg));				            break;				        default:				            return(0);				        }				    }				    if (argc != optind)				        return(-1);				    return(0);				}								void				InitMonSTATUS(ulong state)				{				}								void				SetMonSTATUS(void)				{				}								void				mstatshow(void)				{				    monHeader(0);				    mstatshowcom();				}