serial port communication for hex to UTF 8 transfer

Question

0.00/5 (No votes)

See more:

I am placing the code for my query, where the data I am sending to the antenna is not converted to ASCII and I am getting error in the communication the bolded values are not converted to ASCII equivalent and I am unable to communicate with the antenna so if I use UTF8 as a converter can I send and recieve the data perfectly?

C#

private void btn_Refresh_Click(object sender, EventArgs e)
       {
           try
           {
               //Reading Command Password
               serialPort1.Write(Hex2Ascii("3A08007A00564953494F4E33363DC20D0A"));
              Thread.Sleep(400);
               string resp = serialPort1.ReadExisting();
               resp = resp.Substring(5, 2);
               if (resp == "04")
               {                   serialPort1.Write(Hex2Ascii("3A08000300313233343536373851AE0D0A"));
....
}

public string Hex2Ascii(string str)
        {
            string x2 = "";
            for (int i = 0; i < str.Length; i = i + 2)
            {
                string m = str.Substring(i, 2);  
                int temp = Int32.Parse(m, NumberStyles.HexNumber);   
                char temp1 = converthex((char)temp);
                string x1 = Convert.ToString(Convert.ToChar(temp1)); /
                x2 = x2 + x1;       
               STRING RETRUNS
            }
            return (x2);
        }


public static char converthex(char c)
        {
            if (c == 0x80) return (char)0x20AC;
            if (c == 0x81) return (char)0xfffd;
            if (c == 0x82) return (char)0x201A;
            if (c == 0x83) return (char)0x0192;
            if (c == 0x84) return (char)0x201E;
            if (c == 0x85) return (char)0x2026;
            if (c == 0x86) return (char)0x2020;
            if (c == 0x87) return (char)0x2021;
            if (c == 0x88) return (char)0x02C6;
            if (c == 0x89) return (char)0x2030;
            if (c == 0x8A) return (char)0x0160;
            if (c == 0x8B) return (char)0x2039;
            if (c == 0x8C) return (char)0x0152;
            //            )  return (char)0x8D;
            if (c == 0x8E) return (char)0x017D;
            //            )  return (char)0x8F;
            //            )  return (char)0x90;
            if (c == 0x91) return (char)0x2018;
            if (c == 0x92) return (char)0x2019;
            if (c == 0x93) return (char)0x201C;
            if (c == 0x94) return (char)0x201D;
            if (c == 0x95) return (char)0x2022;
            if (c == 0x96) return (char)0x2013;
            if (c == 0x97) return (char)0x2014;
            if (c == 0x98) return (char)0x02DC;
            if (c == 0x99) return (char)0x2122;
            if (c == 0x9A) return (char)0x0161;
            if (c == 0x9B) return (char)0x203A;
            if (c == 0x9C) return (char)0x0153;
            //            )  return (char)0x9D;
            if (c == 0x9E) return (char)0x017E;
            if (c == 0x9F) return (char)0x0178;
            return c;
        }

This is the code for which I need your help.

Posted 14-Nov-10 19:23pm

.NET Developer66

Updated 14-Nov-10 19:25pm

JF2015

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

David Ewen · Answer 1 · 2010-11-14T19:51:00

Are you sure you need to be using ASCII over this serial port connection? Take the first highlighted example C2 this is 194 decimal which falls outside the ascii range but is also not a valid UTF8 character by itself, it is part of a multibyte char.

Where are you getting the hex strings in the first place and is there any reason you cant just convert the hex to a byte array and send that over the serial port?

C#

string hex = "3A08007A00564953494F4E33363DC20D0A";
byte[] hexbytes = new byte[hex.Length / 2];
for (int i = 0; i < hex.Length; i += 2)
{
    hexbytes[i/2] = byte.Parse(hex.Substring(i, 2), NumberStyles.HexNumber);
}
serialPort.Write(hexbytes, 0, hexbytes.Length);