C#

Quote:

So show us the relevant code fragments - not the whole project, just the important bits

private void btnSend_Click(object sender, EventArgs e)
        {
            string s = txtSend.Text;

            switch (s)
        {
           case "25520201DE":
           rtxtDataArea.Text = "250C01UHD-4K02.10.09C2";
           break;
           default:
           rtxtDataArea.Text = "busy";
           break;
        }
           
       }

Hope you understood my point. Thankyou for your prompt reply. Really mean to me!

//Convert a string of hex digits (example: E1 FF 1B) to a byte array. 
        //The string containing the hex digits (with or without spaces)
        //Returns an array of bytes. 
        private byte[] HexStringToByteArray(string s)
        {
            s = s.Replace(" ", "");
            byte[] buffer = new byte[s.Length / 2];
            for (int i = 0; i < s.Length; i += 2)
                buffer[i / 2] = (byte)Convert.ToByte(s.Substring(i, 2), 16);
            return buffer;
        }

        private void btnSend_Click(object sender, EventArgs e)
        {
            sendData();
        }

But, if I change the structure with some command  in btnSend_Click(object sender, EventArgs e) then

        private void btnSend_Click(object sender, EventArgs e)
        {
            case "25520201DE":
            rtxtDataArea.Text = "25520C01UHD-4K02.10.09C2"
            break;
            default:
            rtxtDataArea.Text = "busy"
         }

I get waht I want in terminal(richtextbox). This is the result.

Please let me know any other programm i need to write or change anything. Thank you for your support.Hope you understood my point.







        }

Luc Pattyn wrote:

NEVER write software that swallows exceptions;

ComPort.Handshake=Handshake.None;
ComPort.Encoding=Encoding.GetEncoding(28591);	

Request „Read" :
« %R NUM CMD LRC »
Response „Read":
« %R NUM CMD DATA LRC »
__________________________________________________________________________
Request „Write":
« %W NUM CMD Data LRC »
Response „Write":
« %W NUM STAT LRC »
% = Start of message
R/W = Read/Write
CMD = Command
NUM = length of message (all bytes excluding „% R/W NUM")
DATA = real data

LRC = XOR complete message
STAT = ACK (0x06) = OK
NAK (0x15) = not OK
BUSY (0x07) = in process

In case of negative answer (NACK) the request must be repeated until a positive answer
(ACK) has been received. The delay time for a new request has a minimum of 100ms.
In case of answer (BUSY) the sender has to wait until the answer (ACK) has been
received.
In every case; each request must be answered with an response. The host has to wait on
an response.

rtxtDataArea.Text = "250CUHD-4K02.10.09C22";

Read = 0x90 & Read = 0x9F

Write "Key – KEY_WB" request
    
   « %W 0x03 0x02 0xF3 LRC »
____________________________________________
Write "Key – KEY_WB" response
  
   %W 0x02 ACK LRC

Remaining keys command I need to prepare on my own according to this.

% = Start of message
R/W = Read/Write
CMD = Command
NUM = length of message (all bytes excluding „% R/W NUM")
DATA = real data

LRC = XOR complete message
STAT = ACK (0x06) = OK
NAK (0x15) = not OK
BUSY (0x07) = in process

In case of negative answer (NACK) the request must be repeated until a positive answer
(ACK) has been received. The delay time for a new request has a minimum of 100ms.
In case of answer (BUSY) the sender has to wait until the answer (ACK) has been
received.
In every case; each request must be answered with an response. The host has to wait on
an response.

Yes, I have commands for LED as well but first I want to write the commands for above key then I think remaining work can be done.

As per protocol, I have connected both system and serial interface PC through DB9- RJ45 cable which also prepared by manufacturer of system. After this, I have uploaded firmware version through Flashmagic software tool. Now I created GUI for implementing these commands but is not working as I expect becuase of some lacking in knowledge about these specific ack response commands. Now I would like to know about the command in which I can get response with ack byte from microcontroller side.

I think I tried to give you enough information to understand the project. If still need, I can give more information. Please advise me on this for further progress.

Thanks & regards,

Sanjay Siwach wrote:

0xDE is given in the protocol.