How does one convert a byte to a char?

[Spero]

Does anyone know if there any built-in function that I can use to convert a byte into a char? I am reading the time & date from a DS1307 RTC IC (BCD format) and displaying it on a character LCD screen, using the standard routines from LCD.C

Currently I am using a routine that accepts the byte value form the DS1307 and returns the equivalent char ready for displaying; see below.

char convert (byte digit) {
char c;
switch (digit) {
case 0 : c = '0'; break;
case 1 : c = '1'; break;
case 2 : c = '2'; break;
case 3 : c = '3'; break;
case 4 : c = '4'; break;
case 5 : c = '5'; break;
case 6 : c = '6'; break;
case 7 : c = '7'; break;
case 8 : c = '8'; break;
case 9 : c = '9'; break;
}
return(c);

}

Thanks,
Spero.

[treitmey]

I would use sprintf OR if you want quick and dirty,...
check that your data is valid and add 0x30; (48)

[rwyoung]

If you mean an 8-bit value into its ASCII character then just add 0x30 after checking that the 8-bit value is in the range 0 to 9.

[asmallri]

Same thing but a little easier to read..


// assuming mybyte is SIGNED
if (mybyte >= 0 && mybyte < 10) mychar += '0';
// assuming mybyte is UNSIGNED
(if mybyte < 10) mychar += '0';
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