Hex online to Text Decoder

I'm trying to send commands to an ESC/POS printer. I found this document:https://www.neodynamic.com/articles/How-to-print-raw-ESC-POS-commands-from-Javascript/

How can I convert the commands to bytes with HEX notation like the example:ESC ! 8 will be \x1B!\x08 ?

They also placed this message:

Notice that ESC needs to be specified as \x1B and the integer parameter value is NOT digit 8 char (hex 38) BUT byte hex 08!!! Be aware of the way you must specify commands & params values as a misunderstanding on this subject might carry unexpected printing results or no printing output at all.

It would be great if this can be done with some code, so I can simply convert some commands directly.

Edit:I also found this code in the online example JSPrintManager.

\x1b@\x1bE\x01ESC POS Printed from JSPrintManager\x1bd\x01\x1dk\x04987654321\x00\x1bd\x01987654321\x1dV\x41\x03

this will print 'ESC Pos Printed from JSPrintManager' and a barcode with value 987654321 on a new line.

Hi I'm trying to transform a string containing special characters like û and ….

In my research and tests I almost succeeded using the following function:

public static string ToHex(this string input){    char[] values = input.ToCharArray();    string hex = "0x";    string add = "";    foreach (char c in values)    {        int value = Convert.ToInt32(c);        add = String.Format("{0:X}", value).Length == 1 ?             "0" + String.Format("{0:X}", value) + "00"             : String.Format("{0:X}", value) + "00";        hex += add;    }    return hex;}

If I try to decode ´o¸sçPQ^ûË\u000f±d it does it correctly and turns it into this 0xB4006F00B8007300E700500051005E00FB00CB000F00B1006400,

instead when I try to decode ´o¸sçPQ](ÂF\u0012…a it fails and turns it into 0xB4006F00B8007300E700500051005D002800C200460012002026006100 instead of this 0xB4006F00B8007300E700500051005D002800C2004600120026206100.

Making a minimum of debug I saw that the string is transformed from ´o¸sçPQ](ÂF\u0012…a to ´o¸sçPQ](ÂF.a, I wouldn't want that to be the problem but I'm not sure.

EDIT

0xB4006F00B8007300E700500051005D002800C2004600120026206100                  ´o¸sçPQ](ÂF…a           CORRECT0xB4006F00B8007300E700500051005D002800C200460012002026006100                ´o¸sçPQ](ÂF.a       MY OUTPUT0xB4006F00B8007300E700500051005D003D00CB0042000C00A50061006000AD004500BB00  ´o¸sçPQ]=ËB¥a`­E»         CORRECT0xB4006F00B8007300E700500051005D003D00CB0042000C00A50061006000AD004500BB00  ´o¸sçPQ]=ËB¥a`­E»         MY OUTPUT0xB4006F00B8007300E700500051005D002F00D30042001900B7006E006100              ´o¸sçPQ]/ÓB·na          CORRECT0xB4006F00B8007300E700500051005D002F00D30042001900B7006E006100              ´o¸sçPQ]/ÓB·na      MY OUTPUT0xB4006F00B8007300E700500051005F001A20BC006B0021003500DD00                  ´o¸sçPQ_‚¼k!5Ý          CORRECT0xB4006F00B8007300E700500051005F00201A00BC006B0021003500DD00                ´o¸sçPQ_'¼k!5Ý          MY OUTPUT0xB4006F00B8007300E700500051005D002F00EE006B00290014204E004100              ´o¸sçPQ]/îk)—NA         CORRECT0xB4006F00B8007300E700500051005D002F00EE006B0029002014004E004100            ´o¸sçPQ]/îk)-NA         MY OUTPUT0xB4006F00B8007300E700500051005D003800E600690036001C204C004F00              ´o¸sçPQ]8æi6“LO         CORRECT0xB4006F00B8007300E700500051005D003800E60069003600201C004C004F00            ´o¸sçPQ]8æi6"LO         MY OUTPUT0xB4006F00B8007300E700500051005D002F00F3006200390014204E004700C602          ´o¸sçPQ]/ób9—NGˆ        CORRECT0xB4006F00B8007300E700500051005D002F00F300620039002014004E0047002C600       ´o¸sçPQ]/ób9-NG^        MY OUTPUT0xB4006F00B8007300E700500051005D003B00EE007200330078014100                  ´o¸sçPQ];îr3ŸA          CORRECT0xB4006F00B8007300E700500051005D003B00EE0072003300178004100                 ´o¸sçPQ];îr3YA          MY OUTPUT0xB4006F00B8007300E700500051005D003000F20064003E009D004B00                  ´o¸sçPQ]0òd>K           CORRECT0xB4006F00B8007300E700500051005D003000F20064003E009D004B00                  ´o¸sçPQ]0òd>?K          MY OUTPUT0xB4006F00B8007300E700500051005D002F00E60075003E00                          ´o¸sçPQ]/æu>            CORRECT0xB4006F00B8007300E700500051005D002F00E60075003E00                          ´o¸sçPQ]/æu>            MY OUTPUT0xB4006F00B8007300E700500051005D002F00EE006A003000DC024500                  ´o¸sçPQ]/îj0˜E          CORRECT0xB4006F00B8007300E700500051005D002F00EE006A0030002DC004500                 ´o¸sçPQ]/îj0~E          MY OUTPUT

I thank you in advance for every reply or comment,

greetings.

A function which take input a ASCII string and output equivalent hexadecimal values, as:

uint8_t *fun_string2hex(char *str,uint8_t *hex){  uint64_t i=0,j=0;   /*converting str character into Hex */    for(i=0,j=0;i<strlen(str);i++,j+=2)    {          sprintf((char*)hex+j,"%02X",str[i]);    }    hex[j]='\0';    return hex;}

It works fine for small input length but very slow when input size increases.Is there some alternate solution or recommend some changes in function to speedup.

I'm using the Scanner class to get input from the console. I'm trying to get my input as integer(.nextInt()) but it does not accept any hexadecimal values. How can start my Program? How to take inputs as HexaDecimal Numbers and Process it?

I am trying to do convert to string to hexadecimal value in android.

for example:

String data= "C0819000001";

Expected result is:

byte[] b = {0x0C,0x30,0x38,0x31........0x01};

Please can anyone help on this one