使用异步await方法从串行端口异步读取 [英] Reading from serial port asynchronously using Async await method
问题描述
我正在使用这种方式从串行端口进行读取:
I'm using this way for reading from serial port :
public static void Main()
{
SerialPort mySerialPort = new SerialPort("COM1");
mySerialPort.BaudRate = 9600;
mySerialPort.Parity = Parity.None;
mySerialPort.StopBits = StopBits.One;
mySerialPort.DataBits = 8;
mySerialPort.Handshake = Handshake.None;
mySerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
mySerialPort.Open();
Console.WriteLine("Press any key to continue...");
Console.WriteLine();
Console.ReadKey();
mySerialPort.Close();
}
private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
{
SerialPort sp = (SerialPort)sender;
string indata = sp.ReadExisting();
Debug.Print("Data Received:");
Debug.Print(indata);
}
我们知道,这种API称为基于事件的异步模式(EAP),我想使用Async Await方法编写以上代码.
as we know This kind of API is called the Event-based Asynchronous Pattern (EAP), I want to write above code using Async Await method.
PS:有时使用上面的代码我得到了错误的数据
预先感谢
PS : with above code sometime I'm getting wrong data
Thanks in Advance
推荐答案
您还可以从SerialPort.BaseStream读取数据.它是Stream类型的,因此支持等待的ReadAsync()方法.将其转换为字符串取决于您,请使用正确的编码. SerialPort的默认值为ASCIIEncoding.
You can also read data from SerialPort.BaseStream. Which is of type Stream so supports the awaitable ReadAsync() method. Converting it to a string is up to you, use the proper Encoding. The default for SerialPort is ASCIIEncoding.
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