topic Help!!! Please ltoa() in 8-bit Microcontrollers

Help!!! Please ltoa()

SuperByte — Sat, 22 Oct 2011 13:50:42 GMT

Hi Guys

I am a newbie and appreciate some help PLEASE.

I am using a HC08Jm60 Micro. I want to use ltoa function. I found that you have to use the extras_stdio.h inc

which I did but I get an error ( ; missing but its not ) . I have seen that you have to re build the lib file and

no reference how to. I am sure where to go from here . All I want is to convert a long to a string.

Thanking you in Advance

Cheers

Re: Help!!! Please ltoa()

kef — Sat, 22 Oct 2011 14:50:17 GMT

What compiler are you using?

Conversion functions like atoi or strtod are declared in stdlib.h . itoa and ltoa are not standard C functions and thus are not available in CW libs. CW 6.3 stdlib.h declares _itoa, but no _ltoa or ltoa.

Re: Help!!! Please ltoa()

bigmac — Thu, 29 Oct 2020 09:24:56 GMT

Hello,

Perhaps you need to "roll your own" function. The following code was adapted from that given in a recent thread within these forums.

// Converts signed 32-bit integer number to a decimal string.// The data is stored within 'buff', minimum length 12 bytes// (sign + 10 digits + null termination)void l_to_a( long val, char *buff){   long temp;   byte i;   char s = ' ';      // Fill buffer with spaces   for (i = 0; i < 11; i++) {      *(buff + i) = ' ';   }      // Null termination for string data   *(buff + i) = 0;   if (val < 0) {      val = -val;      s = '-';   }   // Convert binary value to decimal ASCII   i = 10;   do {      temp = val;      val /= 10;      *(buff + i) = temp - (val * 10) + '0';      i--;   } while (val);   *(buff + i) = s;  // Insert sign character}

Regards,

Mac