弹性连接设备添加

2026-07-20 13:33:27 +08:00
parent 2a363d37cd
commit 48492973c3
4 changed files with 545 additions and 0 deletions
--- a/DeviceCommand/Flexible/FSerialPort.cs
+++ b/DeviceCommand/Flexible/FSerialPort.cs
@@ -0,0 +1,104 @@
+using Common.Attributes;
+using System;
+using System.IO.Ports;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DeviceCommand.Flexible
+{
+    [ADPCommand]
+    public static class FSerialPort
+    {
+        private static readonly SemaphoreSlim _commLock = new(1, 1);
+
+        private static SerialPort CreatePort(string portName, int baudRate, Parity parity, int dataBits, StopBits stopBits, int sendTimeout,int receiveTimeout)
+        {
+            return new SerialPort(portName, baudRate, parity, dataBits, stopBits)
+            {
+                Encoding = Encoding.UTF8,
+                WriteTimeout = sendTimeout > 0 ? sendTimeout : SerialPort.InfiniteTimeout,
+                ReadTimeout = receiveTimeout > 0 ? receiveTimeout : SerialPort.InfiniteTimeout
+            };
+        }
+
+        #region 最常用：只发送字符串
+
+        public static async Task SendAsync(string portName,int baudRate,Parity parity,int dataBits,StopBits stopBits,int sendTimeout,int receiveTimeout,string command,CancellationToken ct = default)
+        {
+            await _commLock.WaitAsync(ct);
+            try
+            {
+                using var port = CreatePort(
+                    portName, baudRate, parity, dataBits, stopBits, sendTimeout, receiveTimeout);
+
+                port.Open();
+
+                using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct);
+                if (sendTimeout > 0)
+                    cts.CancelAfter(sendTimeout);
+
+                var bytes = port.Encoding.GetBytes(command);
+                await port.BaseStream.WriteAsync(bytes, 0, bytes.Length, cts.Token);
+                await port.BaseStream.FlushAsync(cts.Token);
+            }
+            finally
+            {
+                _commLock.Release();
+            }
+        }
+
+        #endregion
+
+        #region 最常用：发送字符串并读取字符串
+
+        public static async Task<string> SendReadAsync(string portName,int baudRate, Parity parity, int dataBits, StopBits stopBits,int sendTimeout, int receiveTimeout,string command,string delimiter = "\n", CancellationToken ct = default)
+        {
+            await _commLock.WaitAsync(ct);
+            try
+            {
+                using var port = CreatePort(
+                    portName, baudRate, parity, dataBits, stopBits, sendTimeout, receiveTimeout);
+
+                port.Open();
+
+                // Send
+                var sendBytes = port.Encoding.GetBytes(command);
+                await port.BaseStream.WriteAsync(sendBytes, 0, sendBytes.Length, ct);
+                await port.BaseStream.FlushAsync(ct);
+
+                // Read
+                delimiter ??= "\n";
+                var sb = new StringBuilder();
+                byte[] buffer = new byte[256];
+
+                using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct);
+                if (receiveTimeout > 0)
+                    cts.CancelAfter(receiveTimeout);
+
+                while (!cts.Token.IsCancellationRequested)
+                {
+                    int read = await port.BaseStream.ReadAsync(
+                        buffer, 0, buffer.Length, cts.Token);
+
+                    if (read == 0)
+                        break;
+
+                    sb.Append(port.Encoding.GetString(buffer, 0, read));
+
+                    int index = sb.ToString().IndexOf(delimiter, StringComparison.Ordinal);
+                    if (index >= 0)
+                        return sb.ToString(0, index).Trim();
+                }
+
+                throw new TimeoutException("串口读取超时");
+            }
+            finally
+            {
+                _commLock.Release();
+            }
+        }
+
+        #endregion
+    }
+}