C # open the serial port appear such mistakes do

CodePudding user response:

Com5 is the name of your objects, its how the port Settings, com1 on your computer

CodePudding user response:

SerialPort Comport=new SerialPort ();

//serial port
Comport. PortName="COM5";
//serial port baud rate
Comport. BaudRate=9600;
//serial data bits
Comport. DataBits=8;

CodePudding user response:

Nicknamed "brother chun" woman,

Nickname is a nickname, you can't from the nickname for determining troat elder brother must be a man

CodePudding user response:

You first use the

 

SerialPort. GetPortNames (); 
To get inside the machine all the COM 

The specific method is introduced as follows, 

//
//abstract: 
//get the current array of computer serial port name, 
//
//return the result: 
//array of current computer serial port name, 
//
//exception: 
//T:System.Com ponentModel. Win32Exception: 
//can't query serial port name, 
Public static string [] GetPortNames (); 

CodePudding user response:

A serial port parameters configured, including serial port, with SerialPort. GetPortNames () to obtain the machine all available serial ports,
COM5 the SerialPort instantiation?

CodePudding user response:

Refer to the following code:

Using System. Linq;

 string [] cOMPorts=System. IO. Ports. SerialPort. GetPortNames (); 
If (cOMPorts. FirstOrDefault (w=& gt; W.E quals (" COM5 "))!=null) 
{
System. IO. Ports. SerialPort SerialPort=new System. IO. Ports. SerialPort (" COM5 ", 9600);//constructor can set other parameters 
if (! SerialPort. IsOpen) 
{
SerialPort. The Open (); 
} 

}