how can i display one number after point float number

[ali genidy]

hi dear
i wrote a code to read encoder that encoder measure a distance cm and mm
i success to do that but my issue is many many of numbers appears after point i used (FloatToStr_FixLen) now it appear only 3 numbers after point
i want only one number after point like ( 000.0 )
so please can you help me to do that ?
here is my code

[paulfjujo]

hello,



you can manage a more easy function

Code: Select all

char Result[6];

void Value_converter(unsigned int adc_value, char *T)
{ 
  long vout ;
  unsigned int value;
    vout= (long)adc_value * 5000 >>10;
    value = (unsigned int) vout;
       T[0] =  value/1000+48;   //Add 48 to get the ASCII character
       T[1]='.' ;
       T[2] = ( value/100)%10+48;
       T[3] =  (value/10)%10 +48;
       T[4] = ( value %10) +48;
       T[5]=0;
}

k=ADC_Read();
 Value_converter(k,Result);
LCD_Out(Result);

or

Code: Select all

char CRam[20];
float F1;


void Float2Ascii (float x, unsigned char *str,char precision)
{
 // converts a floating point number to an ascii string
 // version limitée à 5 decimales maximum
 // x is stored into str, which should be at least 30 chars long
 int ie, i, k, ndig;
 double y;
 if (precision>=5) precision=5;  else precision++;
 ndig =   precision;

 ie = 0;
 // if x negative, write minus and reverse
 if ( x < 0.00000)
 {
   *str++ = '-';
   x = -x;
 }
 // put x in range 1 <= x < 10
 if (x > 0.000000) while (x < 1.000000)
 {
   x *= 10.000;                // a la place de =*
   ie--;
 }
 while (x >= 10.0000)
 {
   x = x/10.0000;
   ie++;
 }
 // in f format, number of digits is related to size
 ndig += ie;                                // a la place de =+
 //round. x is between 1 and 10 and ndig will be printed to
 // right of decimal point so rounding is ...
 for (y = i = 1; i < ndig; i++)
 y = y/10.0000;
 x += y/2.0000;
 if (x >= 10.0000) {x = 1.0000; ie++;}
 if (ie<0)
 {
   *str++ = '0'; *str++ = '.';
   if (ndig < 0) ie = ie-ndig;
   for (i = -1; i > ie; i--)  *str++ = '0';
 }
 for (i=0; i < ndig; i++)
 {
   k = x;
   *str++ = k + '0';
   if (i ==  ie ) *str++ = '.';
   x -= (y=k);
   x *= 10.0000;
  }
 *str = '\0';
}


k=ADC_Read();
F1=(float)K * 5000.0/1024.0;
 Float2Ascii (F1,CRam,1);  // 1 digit after point
 LCD_Out(CRam);

[ali genidy]

thank you o much
it is working good now