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Simulator issue with printf?

Max Power

While using the simulator, the values of i in the serial window are shifted by left 8 bits.

#include "stdlib.h"
#include "stdio.h"
#include "reg51.h"

void main (void)
{
    unsigned char i;
    SCON  = 0x50;
    TMOD |= 0x20;
    TH1   = 221;
    TR1   = 1;
    TI    = 1;

    for (i = 0; i < 8; i++)
    {
        printf("%x\n", i);
    }
}

Parents
  • 0 in reply to ImPer Westermark

    I HAVE NOW GOT BETTER CODE WITH INITIALOIZED DATA AND IT IS NOW WORKING BETTER

    IT WORKS WITH MOST NUMBERS 0 TO 99
    BUT IT DOES NOT WORK WITH NUMBERS 100 to 255

    THIS MUST WORK 100% TODAY AND PRINT BCD NUMBERS

    WHAT IS WRONG?

    int printbcd(int value)
{
  printf("%x",binerytobcd(value));
}

int binerytobcd(int binary)
{
  int bcd;      /* answer */

  bcd = 0;      /* initilase variable */

  while (binary > 10) /* while binary is more than 10 */
  {
    bcd = bcd + 16;       /* change bcd */
    binary = binary - 10; /* change binary */
  }

  while (binary > 0)   /* while binary is greater than 1 */
  {
    bcd = bcd + 1;    /* chainge bcd */
    binary = binary - 1; /* change binary */
  }

  return bcd;        /* result */
}

Reply
  • 0 in reply to ImPer Westermark

    I HAVE NOW GOT BETTER CODE WITH INITIALOIZED DATA AND IT IS NOW WORKING BETTER

    IT WORKS WITH MOST NUMBERS 0 TO 99
    BUT IT DOES NOT WORK WITH NUMBERS 100 to 255

    THIS MUST WORK 100% TODAY AND PRINT BCD NUMBERS

    WHAT IS WRONG?

    int printbcd(int value)
{
  printf("%x",binerytobcd(value));
}

int binerytobcd(int binary)
{
  int bcd;      /* answer */

  bcd = 0;      /* initilase variable */

  while (binary > 10) /* while binary is more than 10 */
  {
    bcd = bcd + 16;       /* change bcd */
    binary = binary - 10; /* change binary */
  }

  while (binary > 0)   /* while binary is greater than 1 */
  {
    bcd = bcd + 1;    /* chainge bcd */
    binary = binary - 1; /* change binary */
  }

  return bcd;        /* result */
}

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