/*
********************************************************************************
SIEMENS C511/C513 STARTER KIT
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PROGRAM 	ssc1_ma
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MODUL NAME	ssc1_ma2.c
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DESCRIPTION	This module contains functions for reading characters and
		numbers via serial interface. The functions are adapted for
		the use via simulated IO feature of the dScope debugger
		(0x11 is filtered out). Characters are converted to integers
		with atoi() which is basically the same as the library function.
--------------------------------------------------------------------------------
FUNCTIONS	int atoi (char *);
		unsigned int getnumber (void);
		void getline (char *);
--------------------------------------------------------------------------------
NOTE		No precautions are implemented for overflow of line[] buffer
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VERSION 	V1.0
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COMPILER	Keil PK51 Eval V5.02
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SEE ALSO	ssc1_ma1.c
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DATE		16/10/95
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MODIFICATIONS	none
********************************************************************************
*/

/***********************    Compiler Includes	 ******************************/
#include <stdio.h>				 /* define I/O functions */
#include <stdlib.h>				 /* for atoi function */
/***********************    Prototypes		 ******************************/
 /* int atoi (char *);	*/
unsigned int getnumber (void);
void getline (char *);

/***********************    Program Code	 ******************************/

void getline (char *line)  {
  while ((*line = getchar()) != '\n') if (*line != 0x11 ) line++;
}

/*----------------------------------------------------------------------------*/
#if 0
int atoi (char *line)  {
  bit sign;
  int number;

  /* skip white space */
  for ( ; *line == ' ' || *line == '\n' || *line == '\t'; line++);

  /* establish sign */
  sign = 1;
  if (*line == '+' || *line == '-')  sign = (*line++ == '+');

  /* compute decimal value */
  for (number=0; *line >= '0' && *line <= '9'; line++)
    number = (number * 10) + (*line - '0');

  return (sign ? number : -number);
}

#endif
/*----------------------------------------------------------------------------*/

unsigned int getnumber (void)  {
  char line [40];
  
  getline (line);
  return (atoi (line));
}