增加CPP

seial_test.py

@@ -0,0 +1,37 @@
+import serial
+import time
+
+# 配置串口（请根据实际情况修改设备名）
+PORT = '/dev/ttyS0'  # 或 '/dev/ttyUSB0'
+BAUDRATE = 115200
+
+try:
+    # 打开串口
+    ser = serial.Serial(PORT, BAUDRATE, timeout=1)
+    print(f"✅ 已打开串口 {PORT}")
+
+    # 发送数据
+    data_to_send = b'123456\n'
+
+    # 持续读取数据（注意：此时串口是打开的！）
+    print("📥 开始监听串口数据...")
+    while True:
+        ser.write(data_to_send)
+        print("📤 已发送数据")
+        try:
+            line = ser.readline()
+            if line:
+                print("接收到:", line.hex())
+        except serial.SerialException as e:
+            print("❌ 串口异常:", e)
+            break
+        time.sleep(1)
+
+except serial.SerialException as e:
+    print(f"❌ 无法打开串口 {PORT}: {e}")
+except KeyboardInterrupt:
+    print("\n🛑 用户中断")
+finally:
+    if 'ser' in locals() and ser.is_open:
+        ser.close()
+        print("🔌 串口已关闭")