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ck/device_a.py

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+"""
+设备A示例 - 发送端
+模拟第一台设备，定期发送站点数据（用户名、线路名称、站点编号）
+"""
+
+from serial_protocol import SerialProtocol, Command
+from data_models import StationData, ResponseData
+import time
+
+
+def on_receive(cmd: int, data: bytes):
+    """接收数据回调函数"""
+    print("\n[设备A] 收到数据:")
+    cmd_name = (Command(cmd).name if cmd in Command._value2member_map_
+                else 'UNKNOWN')
+    print(f"  命令: 0x{cmd:02X} ({cmd_name})")
+
+    if cmd == Command.ACK:
+        print("  >>> 对方已确认接收")
+    elif cmd == Command.DATA_RESPONSE:
+        # 优先尝试解析字典响应
+        response_dict = ResponseData.from_bytes(data)
+        if response_dict and isinstance(response_dict, dict):
+            print("\n  📥 收到设备B的响应字典:")
+            for key, value in response_dict.items():
+                print(f"     {key}: \"{value}\"")
+        else:
+            # 尝试解析站点数据
+            station_data = StationData.from_bytes(data)
+            if station_data:
+                print(f"  >>> 对方发来站点数据: {station_data}")
+            else:
+                print(f"  >>> 对方发来数据: "
+                      f"{data.decode('utf-8', errors='ignore')}")
+
+
+def main():
+    # 创建串口协议实例
+    # Windows: 'COM1', 'COM2', etc.
+    # Linux: '/dev/ttyUSB0', '/dev/ttyS0', etc.
+    device = SerialProtocol(port='COM1', baudrate=115200)
+
+    print("=" * 60)
+    print("设备A - 发送端")
+    print("=" * 60)
+
+    # 打开串口
+    if not device.open():
+        print("❌ 无法打开串口")
+        return
+
+    print(f"✓ 串口已打开: {device.port} @ {device.baudrate}")
+
+    # 启动接收线程
+    device.start_receive(on_receive)
+    print("✓ 接收线程已启动")
+
+    try:
+        # 模拟线路数据
+        lines = ["1号线", "2号线", "3号线", "环线"]
+        users = ["张三", "李四", "王五", "赵六"]
+
+        # 模拟设备运行
+        counter = 0
+        while True:
+            counter += 1
+            print(f"\n{'='*60}")
+            print(f"循环 {counter}")
+            print('='*60)
+
+            # 1. 发送心跳包
+            if device.send_heartbeat():
+                print("✓ 发送心跳包")
+            else:
+                print("✗ 发送心跳包失败")
+
+            time.sleep(2)
+
+            # 2. 发送站点数据
+            station_data = StationData(
+                username=users[counter % len(users)],
+                line_name=lines[counter % len(lines)],
+                station_no=counter
+            )
+            print("\n准备发送站点数据:")
+            print(f"  {station_data}")
+
+            if device.send_data(station_data.to_bytes()):
+                print("✓ 站点数据发送成功")
+            else:
+                print("✗ 站点数据发送失败")
+
+            time.sleep(5)
+
+    except KeyboardInterrupt:
+        print("\n\n用户中断")
+    finally:
+        device.close()
+        print("串口已关闭")
+
+
+if __name__ == '__main__':
+    main()