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Hex to decimal to character string conversion

 
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Patrick OKeefe
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Hex to decimal to character string conversion
PostPosted: Sat Nov 10, 2001 5:20 pm     Reply with quote

I need to convert a 32 bit hexidecimal integer to decimal, and then to a string of characters that represent the decimal conversion to output to the LCD routine lcd.c in the PICC examples. Anyone ever accomplish this?

Any hints appreciated.

Thanks,
Pat O'Keefe
___________________________
This message was ported from CCS's old forum
Original Post ID: 1048
Tomi
Guest







Re: Hex to decimal to character string conversion
PostPosted: Sun Nov 11, 2001 9:40 am     Reply with quote

I assume that you are talking about a string contains hex data.
In this case you can use a modified version of the gethex() function in "input.c":

byte gethex1(char digit) {
if(digit<='9')
return(digit-'0');
else
return((toupper(digit)-'A')+10);
}

int32 gethex(char *inputString) {
int32 retval;
#byte retvalL = retval
#byte retvalH = retval+1
#byte retvalHL = retval+2
#byte retvalHH = retval+3

retvalHH = gethex1(inputString[0]);
retvalHH <<=4;
retvalHH += gethex1(inputString[1]);
retvalHL = gethex1(inputString[2]);
retvalHL <<=4;
retvalHL += gethex1(inputString[3]);
retvalH = gethex1(inputString[4]);
retvalH <<=4;
retvalH += gethex1(inputString[5]);
retvalL = gethex1(inputString[6]);
retvalL <<=4;
retvalL += gethex1(inputString[7]);
return(retval);
}

main()
{
int32 lResult;
char toConvert[9];
strcpy(toConvert,"1234ABCD"); // fill out the sample string
lResult = gethex(toConvert); // convert the string
printf(LCD_PUTC,"\%lu",lResult); // write it as decimal
}


:=I need to convert a 32 bit hexidecimal integer to decimal, and then to a string of characters that represent the decimal conversion to output to the LCD routine lcd.c in the PICC examples. Anyone ever accomplish this?
:=
:=Any hints appreciated.
:=
:=Thanks,
:=Pat O'Keefe
___________________________
This message was ported from CCS's old forum
Original Post ID: 1054
Charlie U
Guest







Re: Hex to decimal to character string conversion
PostPosted: Sun Nov 11, 2001 9:17 pm     Reply with quote

:=I need to convert a 32 bit hexidecimal integer to decimal, and then to a string of characters that represent the decimal conversion to output to the LCD routine lcd.c in the PICC examples. Anyone ever accomplish this?
:=
:=Any hints appreciated.
:=
:=Thanks,
:=Pat O'Keefe

Pat,
You can use the printf() function to do this. Check the manual and the help.
___________________________
This message was ported from CCS's old forum
Original Post ID: 1059
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