C# 读取 HEX 串口数据并发送到 Streamwriter

Question

我正在尝试从以 HEX 格式发送数据的设备中读取串行数据，然后将其写入 azure 中继流写入器以接收应用程序。设备发送这些十六进制值：16 51 1D 65 D4 A6 但是我的程序似乎正在读取：

:

如何让串口读取十六进制数据并通过流式写入器发送？我在下面附上了我的代码。感谢您的帮助！

// Read from the serial and write to the hybrid connection.
            var writes = Task.Run(async () => {
               // var reader = Console.In;
                var writer = new StreamWriter(relayConnection) { AutoFlush = true };
                
                
                do
                {
                    // Read serial data from the serial port.
                    string line = sp.ReadExisting();
                    // Write the line to the hybrid connection (Azure Relay)
                    if(line.ToString() != "")
                    { 
                        await writer.WriteLineAsync(line);

                    }

                    //cancel connection and break loop
                    if (Main.disconnect == true)
                    {
                        break;
                    }

                }
                while (true);
            });

Answer 1

您可以将其读取为字节数组而不是文本：

int length = sp.BytesToRead;
byte[] buf = new byte[length];

sp.Read(buf, 0, length);
System.Diagnostics.Debug.WriteLine("Received Data:" + buf);

Answer 2

我用这段代码解决了我的查询：

do
{
    // Read serial data from the serial port.
    //string line = sp.ReadExisting();
    int length = sp.BytesToRead;
    byte[] buf = new byte[length];
    sp.Read(buf, 0, length);
    // Write the line to the hybrid connection (Azure Relay)
    if(buf.ToString() != "")
    { 
        for(int i = 0; i < length; i++)
        {
            await writer.WriteLineAsync(buf[i].ToString("X2"));
        }
        //await writer.WriteLineAsync(buf.ToString());
    
    }

C# 读取 HEX 串口数据并发送到 Streamwriter

C# Read HEX Serial Port Data and send to Streamwriter

c#

hex

serial-port

streamwriter

azure