/*********************************************************************/ /*                     SCI PRINT FOR HCS12                                     FOR HCS12                             2003.4.14                              BY Liuyongyi                                   *//*********************************************************************//*********************************************************************//* printp() ------------ a simply version of printf()                */ /**********************************************************************//* with the help of printp() function, you can get the out format as below:   printp("This first line outputs the format string.\n");   printp("%s\n","This second line outputs a string.");   printp( "Notice that the first %s\n","two output lines had CR/LF at the end.");   printp( "%c%c%c%c line outputs 'This' as chars.\n",'T', 'h', 'i', 's');   printp( "Dec values: %d  %d   Hex value: %x\n",dec_value, neg_value, hex_value);   printp( "Long dec values: %ld  %ld\n",ldec_value,lneg_value);   printp( "Output sized strings: %20s %-20s\n","Right string","Left string");   printp( "Output sized values:  %20d %-20d\n",dec_value,neg_value);   printp( "                      %20x %-20x\n",hex_value,hex_value);   printp( "                      %20ld %-20ld\n",ldec_value,ldec_value);where the variables can be as:   int hex_value = 0x1234;   int dec_value = 1234;   int neg_value = -1234;   long ldec_value = 12345678L;   long lneg_value = -12345678L;修改了部分printp()代碼， 打印時(shí)如果 %后面的x,d為大寫(xiě)，打印的數(shù)不區(qū)分正負(fù)數(shù)                      為小寫(xiě)，區(qū)分正負(fù)數(shù)                 加l為取長(zhǎng)型變量。例如打印如下語(yǔ)句：	printp("\n here i is 0xF123ABCD, j is 0xF123");	printp("\n 1 : %%lX i is: %lX",i);	printp("\n 2 : %%lx i is: %lx",i);	printp("\n 3 : %%lD i is: %lD",i);	printp("\n 4 : %%ld i is: %ld",i);	printp("\n 5 : %%8X i is: %8X",i);	printp("\n 6 : %%8x i is: %8x",i);	printp("\n 7 : %%8D i is: %8D",i);	printp("\n 8 : %%8d i is: %8d",i);	printp("\n 9 :  %%X j is: %X",j);	printp("\n 10:  %%x j is: %x",j);	printp("\n 11:  %%D j is: %D",j);	printp("\n 12:  %%d j is: %d",j);結(jié)果為：	 here i is 0xF123ABCD, j is 0xF123	 1 : %lX i is: F123ABCD	 2 : %lx i is: -EDC5433	 3 : %lD i is: 4045646797	 4 : %ld i is: -249320499	 5 : %8X i is:     F123	 6 : %8x i is:     -EDD	 7 : %8D i is:    61731	 8 : %8d i is:    -3805	 9 :  %X j is: F123	 10:  %x j is: -EDD	 11:  %D j is: 61731	 12:  %d j is: -3805  */ /************************************************************************/#include <ctype.h>#include <string.h>#include <stdarg.h>#ifndef  TRUE#define  TRUE 1#endif#ifndef  FALSE#define  FALSE 0#endif#define Baud_9600  55#define Baud_19200 26#define SCI0CR2     (*((volatile unsigned char*)(0x00CB)))#define SCI0SR1     (*((volatile unsigned char*)(0x00CC)))#define SCI0BDH     (*((volatile unsigned char*)(0x00C8)))#define SCI0BDL     (*((volatile unsigned char*)(0x00C9)))#define SCI0DRL     (*((volatile unsigned char*)(0x00CF)))#define CR_as_CRLF  TRUE             // if true , you can use "\n" to act as CR/LF,                                      // if false , you have to use "\n\r",but can get a higher speedvoid uart_init(void) {SCI0CR2=0x0c;SCI0BDH=0x00;SCI0BDL=0x9C;}void uart_putchar(unsigned char ch){while(!(SCI0SR1&0x80)){}         SCI0DRL=ch;}static int do_padding;static int left_flag;static int len;static int num1;static int num2;static char pad_character;/*---------------------------------------------------*//*                                                   *//* This routine puts pad characters into the output  *//* buffer.                                           *//*                                                   */static void padding( const int l_flag){   int i;   if (do_padding && l_flag && (len < num1))      for (i=len; i<num1; i++)          uart_putchar( pad_character);   }/*---------------------------------------------------*//*                                                   *//* This routine moves a string to the output buffer  *//* as directed by the padding and positioning flags. *//*                                                   */static void outs( char* lp){   /* pad on left if needed                          */   len = strlen( lp);   padding( !left_flag);   /* Move string to the buffer                      */   while (*lp && num2--)      uart_putchar( *lp++);   /* Pad on right if needed                         */   len = strlen( lp);   padding( left_flag);   }/*---------------------------------------------------*//*                                                   *//* This routine moves a number to the output buffer  *//* as directed by the padding and positioning flags. *//*                                                   */     	static void reoutnum(unsigned long num, unsigned int negative, const long base ) {   char* cp;   char outbuf[32];   const char digits[] = "0123456789ABCDEF";      /* Build number (backwards) in outbuf             */   cp = outbuf;   do {      *cp++ = digits[(int)(num % base)];      } while ((num /= base) > 0);   if (negative)      *cp++ = '-';   *cp-- = 0;   /* Move the converted number to the buffer and    */   /* add in the padding where needed.               */   len = strlen(outbuf);   padding( !left_flag);   while (cp >= outbuf)      uart_putchar( *cp--);   padding( left_flag);}static void outnum(long num, const long base ,unsigned char sign)//1, signed  0 unsigned{   unsigned int negative;   if ( (num < 0L) && sign )    {  negative=1;      num = -num;      }   else negative=0;      reoutnum(num,negative,base);  } /*---------------------------------------------------*//*                                                   *//* This routine gets a number from the format        *//* string.                                           *//*                                                   */static int getnum( char** linep){   int n;   char* cp;   n = 0;   cp = *linep;   while (isdigit(*cp))      n = n*10 + ((*cp++) - '0');   *linep = cp;   return(n);}/*---------------------------------------------------*//*                                                   *//* This routine operates just like a printf/sprintf  *//* routine. It outputs a set of data under the       *//* control of a formatting string. Not all of the    *//* standard C format control are supported. The ones *//* provided are primarily those needed for embedded  *//* systems work. Primarily the floaing point         *//* routines are omitted. Other formats could be      *//* added easily by following the examples shown for  *//* the supported formats.                            *//*                                                   */void printp( char* ctrl, ...){   int long_flag;   int dot_flag;   char ch;   va_list argp;   va_start( argp, ctrl);   for ( ; *ctrl; ctrl++) {      /* move format string chars to buffer until a  */      /* format control is found.                    */      if (*ctrl != '%') {         uart_putchar(*ctrl);#if CR_as_CRLF==TRUE                  if(*ctrl=='\n') uart_putchar('\r');#endif                  continue;         }      /* initialize all the flags for this format.   */      dot_flag   =      long_flag  =      left_flag  =      do_padding = 0;      pad_character = ' ';      num2=32767;try_next:      ch = *(++ctrl);      if (isdigit(ch)) {         if (dot_flag)            num2 = getnum(&ctrl);         else {            if (ch == '0')               pad_character = '0';            num1 = getnum(&ctrl);            do_padding = 1;         }         ctrl--;         goto try_next;      }            switch (tolower(ch)) {         case '%':              uart_putchar( '%');              continue;         case '-':              left_flag = 1;              break;         case '.':              dot_flag = 1;              break;         case 'l':              long_flag = 1;              break;         case 'd':              if (long_flag ==1 ) {              		if(ch == 'D')                {outnum( va_arg(argp, unsigned long), 10L , 0);continue;}              	        else  /* ch == 'd' */        {outnum( va_arg(argp, long), 10L,1);continue;}                 }              else {              		if(ch == 'D')                {outnum( va_arg(argp, unsigned int),10L,0);continue;}              		else  /* ch == 'd' */        {outnum( va_arg(argp, int), 10L,1);continue;}                }                         case 'x':    // X 無(wú)符號(hào) ， x  有符號(hào)              if (long_flag ==1 )  {              	        if(ch == 'X')                {outnum( va_arg(argp, unsigned long), 16L,0);continue;}              	        else  /* ch == 'x' */        {outnum( va_arg(argp, long), 16L,1);continue;}                  }              else {              		if(ch == 'X')                {outnum( va_arg(argp, unsigned int), 16L,0);continue;}              		else  /* ch == 'x' */        {outnum( va_arg(argp, int), 16L,1);continue;}                 } //如果按照16進(jìn)制打印，將全部按照無(wú)符號(hào)數(shù)進(jìn)行              continue;         case 's':              outs( va_arg( argp, char*));              continue;         case 'c':              uart_putchar( va_arg( argp, int));              continue;         default:              continue;         }      goto try_next;      }   va_end( argp);   }