add example for generic multimeter via TCP, like Siglent SDM3045X

Author: rambo

examples/multimeter_tcp.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+"""Example/test script for using the Generic multimeter via TCP"""
+import atexit
+import os
+import sys
+
+from scpi.transports import TCPTransport
+from scpi.devices.generic import MultiMeter
+from scpi.wrapper import AIOWrapper
+
+# pylint: disable=R0801
+
+if __name__ == "__main__":
+    if len(sys.argv) < 3:
+        print(f"run with python -i {__file__} IP PORT")
+        sys.exit(1)
+    # Then put to interactive mode
+    os.environ["PYTHONINSPECT"] = "1"
+    xport = TCPTransport(ipaddr=sys.argv[1], port=int(sys.argv[2]))
+    aiodev = MultiMeter(xport)
+    dev = AIOWrapper(aiodev)
+
+    atexit.register(dev.quit)
+
+    print(dev.identify())

src/scpi/transports/__init__.py

@@ -2,3 +2,5 @@
 
 from .rs232 import RS232Transport
 from .tcp import TCPTransport
+
+__all__ = ["RS232Transport", "TCPTransport"]