Convert string to byte array.

2021-12-29T10:26:41.353000Z

I just knew people weren't going to let this go by :-)
The for loop solution js offcourse more elegant and shorter. Anyway Happy New Year!

Convert string to byte array.

2021-12-29T08:10:41.366000Z

    FOR Index := 0 TO 7 DO
        MyBytes[Index] := SHL(HEXinASCII_TO_BYTE(MyStr[Index*2]),4) + HEXinASCII_TO_BYTE(MyStr[Index*2 + 1]);
    END_FOR
    FOR Index := 0 TO 7 DO
        MyStr2[Index*2+1] := TO_BYTE(BYTE_TO_HEXinASCII(MyBytes[Index]));
        MyStr2[Index*2] := TO_BYTE(BYTE_TO_HEXinASCII(SHR(MyBytes[Index],4)));
    END_FOR

Same lib. Please read a little the help.

Convert string to byte array.

2021-12-29T08:10:36.574000Z

    FOR Index := 0 TO 7 DO
        MyBytes[Index] := SHL(HEXinASCII_TO_BYTE(MyStr[Index*2]),4) + HEXinASCII_TO_BYTE(MyStr[Index*2 + 1]);
    END_FOR
    FOR Index := 0 TO 7 DO
        MyStr2[Index*2+1] := TO_BYTE(BYTE_TO_HEXinASCII(MyBytes[Index]));
        MyStr2[Index*2] := TO_BYTE(BYTE_TO_HEXinASCII(SHR(MyBytes[Index],4)));
    END_FOR

Same lib. Please read a little the help.

Convert string to byte array.

2021-12-29T07:44:04.145000Z

Thanks, but what do you think about other conversion. I would like to change byte array :0x44, 0x44, 0x46, 0xFF, 0xFF
on string value :
'444446FFFF' ? How do this ?

Convert string to byte array.

2021-12-29T07:33:34.153000Z

    FOR Index := 0 TO 9 DO
        MyBytes[Index] := HEXinASCII_TO_BYTE(MyStr[Index]);
    END_FOR

Convert string to byte array.

2021-12-27T21:37:30.793000Z

So, maybe have you idea how convert this 1D Array :

ASCIIarray : STRING(255) := 'AFDFAFFFFF';

to 2D ARRAY:

ASCIIarray2 : ARRAY[0..0, 0..4] OF STRING := ['AF', 'DF', 'AF', 'FF', 'FF'];

Convert string to byte array.

2021-12-27T20:24:44.165000Z

So how do I pass a single character from string to my function named: ASCIIstring_TO_BYTE?

Convert string to byte array.

2021-12-27T19:16:51.539000Z

actually, looping from 0 to 10 is 11 loops on a string of 10 chars.

then if you want to get a byte value, don't concatenate 2 chars into a word. just take lower byte once at a time.

Convert string to byte array.

2021-12-27T18:22:36.137000Z

... This examle works:

byteMy:=ASCIIstring_TO_BYTE('A','F');

But in this example is problem:

VAR
ASCIIarray:STRING:='DFAFFF0001';
bytes_array: ARRAY[0..100] OF BYTE;
END_VAR

FOR iCount:=0 TO 10 DO
    IF (iCount MOD 2) = 0 THEN
        TLV_bytes_array[iCountTT] := ASCIIstring_TO_BYTE((ASCIIarray[iCount]),(ASCIIarray[iCount+1]));
        iCountTT:=iCountTT+1;
    END_IF
END_FOR

The error is:
Cannot convert type 'BYTE' to type 'STRING(1)' ...

Function STRING_TO_BYTE not resolved problem. How do I pass one character from STRING to a function?

Convert string to byte array.

2021-12-27T15:18:12.682000Z

Did you had a look at OSCATT lib ? HEX_TO_BYTE seems to apply.

Also there is WORD_AS_STRING, you need the exact opposite.

Maybe a union of string(30) Byte(31) may do the job ? (string is 1 byte longer than character number, to store the null char which ends the string)

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Convert string to byte array.

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Convert string to byte array.

Convert string to byte array.

Convert string to byte array.

Convert string to byte array.

Convert string to byte array.