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Uart Serial Communication C# Code

uart serial communication c# code


Uart Serial Communication C# Code --





















































Uart Serial Communication C# Code


Stack Overflow works best with JavaScript enabled . Besides trying to learn everything I can about it, I've been using it to control an Insteon PowerLinc Modem. Lately Ive seen a lot of questions on how to send and receive data through a serial port, so I thought it was time to write on the topic. As always a red cross or yellow triangle mean somethings up with the install of the hardware. Non-standard baud rates are a no-no however if you can find it MHComm32.ocx from a company called Elltech did provide a means of creating custom baud rates. With the above mods the form represents. Try searching for similar questions Browse our recent questions Browse our popular tags If you feel something is missing that should be here, contact us. I cant say this is the proper way of doing this, however its ugly but it does work, for this example the text is loaded into a text box called txtCommand. I know my setup is functional since I can communicate with the target using Realterm, and i'm receiving the data properly. This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL). The next thing to try once you have the above working is to add another rich text box called rtbOutgoing add the below code to project: private void rtbOutgoingKeyPress(object sender, KeyPressEventArgs e) { if (e.KeyChar == (char)13) // enter key { ComPort.Write("rn"); rtbOutgoing.Text = ""; } else if (e.KeyChar 126) { e.Handled = true; // ignores anything else outside printable ASCII range } else { ComPort.Write(e.KeyChar.ToString()); } } Once a rich text box and the code above is added the KeyPress event must be wired to it by clicking the Event selection (looks like a thunder bolt) going to the KeyPress event and clicking the down arrow and selecting the rtbOutgoingKeyPress this will attach the event. The simplest of all connections is below: Pins 2 and 3 are directly connected (tip: the pin spacing on a standard 9-way D type is just right to all a jumper from the back of an old CD-Rom to be used!) This type of connection is used often to see if the program receives and sends data. #endregion to make it easier when scanning my code. To this I have added the button (name Ports) and a Rich Text Box. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. As with anything you write in .Net you need to add the references to the Namespace's you'll be using: using System; using System.Text; using System.Drawing; using System.IO.Ports; In this application I wanted to give the user the option of what format they wanted to send the message in, either string or binary, so we have an enumeration for that, and an enumerations for the type of message i.e; Incoming, Outgoing, Error, etc. The program detects my one and only COM port, COM12 and adds it to the port drop down box like it should.


Was This Post Helpful? 0 Back to top MultiQuote Quote Reply #15 TenRC New D.I.C Head Reputation: 1 Posts: 1 Joined: 14-January 09 Posted 14 January 2009 - 01:34 PM The downloaded file is corrupt or incomplete. It is displays usually as a number of bit per second, the possible number that can be used are 300, 600, 1200, 2400, 9600, 14400, 19200, 38400, 57600, and 115200 (these come from the UAR 8250 chip is used, if a 16650 the additional rates of 230400, 460800 and 921600) . I took a look at the code and followed the portName variable but was unable to see why it would cut off the 2 in 12. Was This Post Helpful? 0 Back to top MultiQuote Quote Reply #12 ABNcoder New D.I.C Head Reputation: 0 Posts: 1 Joined: 15-April 08 Posted 22 July 2008 - 08:22 AM This is great code. I say fairly as the interrupt handler of the control CommEvents never worked as quickly or as well as I was expecting it to. This method looks identical to our WriteData method, because it has to do the same exact work: #region comPortDataReceived /// /// method that will be called when theres data waiting in the buffer /// /// /// void comPortDataReceived(object sender, SerialDataReceivedEventArgs e) { //determine the mode the user selected (binary/string) switch (CurrentTransmissionType) { //user chose string case TransmissionType.Text: //read data waiting in the buffer string msg = comPort.ReadExisting(); //display the data to the user DisplayData(MessageType.Incoming, msg "n"); break; //user chose binary case TransmissionType.Hex: //retrieve number of bytes in the buffer int bytes = comPort.BytesToRead; //create a byte array to hold the awaiting data byte[] comBuffer = new byte[bytes]; //read the data and store it comPort.Read(comBuffer, 0, bytes); //display the data to the user DisplayData(MessageType.Incoming, ByteToHex(comBuffer) "n"); break; default: //read data waiting in the buffer string str = comPort.ReadExisting(); //display the data to the user DisplayData(MessageType.Incoming, str "n"); break; } } #endregion We have 3 small methods left, and these are actually optional, for the lack of a better word. For further clarification of anything detailed here the book Serial Port Complete (Second Edition) by Jan Axelson (LVR). It was used originally to ensure both ends lined up with each other and the data was sent and received properly. This is a programable device that can send X10 codes through the power lines. Now. Before you can use the software methods below it's always best to have a comm port installed. In the button click: Add: SerialPinChangedEventHandler1 = new SerialPinChangedEventHandler(PinChanged); And attach the delegate as so ComPort.PinChanged = SerialPinChangedEventHandler1; This now causes the program when either DTR or RTS is connected to the pins to change the labels back colour. Handshaking can be none (which is the most common these days) the handshaking was originally used when the speeds were lower and it would cost more time to resend the data, it is used also if a large amount of data is to be sent to ensure it has been correctly received. As above related commands are Read(), ReadByte(), ReadChar(), ReadLine(), and ReadTo(). 102d75a83e

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