MessageBox.Show("Please check the hexadecimal data format error") We have to traverse themĭata = Convert.ToByte(str.Substring(j, 2), 16) //substring is a hexadecimal number that takes 2 bytes of str string from the position of j If (str = ' ')//Our sending statements are separated by spaces.
#Visual studio c serial port example serial
If (serialPort1.IsOpen)//Judge whether our serial port is openįor (int j = 0 j < str.Length j++)//Traversing our sending statements, bloggers now send one by one String str = textBox2.Text //Get the data of the send boxīyte Data = new byte //As a container for sending Private void button1_Click(object sender, EventArgs e) MessageBox.Show("Port error,Please check the serial port", "error") button3.Enabled = true // Close the serial port SerialPort1.StopBits = StopBits.OnePointFive īutton2.Enabled = false //The open serial port button is not available SerialPort1.DataBits = Convert.ToInt32(comboBox3.Text, 10) SerialPort1.BaudRate = Convert.ToInt32(comboBox2.Text, 10) Private void button4_Click(object sender, EventArgs e) SerialPort1.Close() //Close the serial port SerialPort1.PortName = Buffer //Get COM informationĬomboBox1.Text = Buffer //Add serial port to get Recordset Private void SearchAndAddSerialToComboBox(object sender, EventArgs e)Ĭ() //Records scanned before the beginning of the Qing Dynastyīuffer = "COM" + i.ToString() //Obtain COM1-20 CheckForIllegalCrossThreadCalls = false For details, refer to the previous article. Pay attention to whether the controls of the interface correspond to the function trigger of the blogger, not to change the trigger of the interface.
#Visual studio c serial port example code
Double click the send button to automatically generate the method function and write the method we sent:ġ.4 the code is as follows: it can be used directly, provided that your interface is the same as that of the blogger. text: the string to write to the output buffer. Writes the specified string and System.IO. value to the output buffer. count: the number of characters to write. buffer: character array containing the data to be written to the port. Writes the specified number of characters to the serial port using the data in the buffer. Public void Write(char buffer, int offset, int count) Writes the specified string to the serial port. Offset: the byte offset from zero in the buffer parameter, from which bytes are copied to the port. buffer: an array of bytes containing the data to be written to the port. Writes the specified number of bytes to the serial port using the data in the buffer. )First, we need to set the interface, including send box, receive box and send buttonġ.2 let's first learn about the sending of serialPort, which provides several interfaces: public void Write(byte buffer, int offset, int count) If I can't, I can see the previous article of the blogger and put a link(.
Once a day to prevent puppy love:ġ.SerialPort serial port control sending configuration 1.1 take the item of the previous article. It is convenient for you to use and easy to use.
This serial port communication control provides a lot of methods for the communication between host computer and single chip microcomputer.
In this issue, we will explain the sending and receiving of serial port. Last time, the blogger explained the configuration of serial port control for you. Sending and receiving of C# Serialport preface:
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