1'''
2Relay - Relay_read_counters.py with asynchronous mode.
3
4This example demonstrates how to read counters from EthanL.
5
6-------------------------------------------------------------------------------------
7Please change correct serial number or IP and port number BEFORE you run example code.
8
9For other examples please check:
10 https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
11See README.md file to get detailed usage of this example.
12
13Copyright (c) 2022-2025 WPC Systems Ltd. All rights reserved.
14'''
15
16## WPC
17from wpcsys import pywpc
18
19## Python
20import asyncio
21import sys
22sys.path.insert(0, 'src/')
23
24
25async def main():
26 ## Get Python driver version
27 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
28
29 ## Create device handle
30 dev = pywpc.EthanL()
31
32 ## Connect to device
33 try:
34 dev.connect("192.168.1.110") ## Depend on your device
35 except Exception as err:
36 pywpc.printGenericError(err)
37 ## Release device handle
38 dev.close()
39 return
40
41 try:
42 ## Parameters setting
43 port = 0 ## Depend on your device
44 index = -1 ## Read all the relay counters
45
46 ## Get firmware model & version
47 driver_info = await dev.Sys_getDriverInfo_async()
48 print(f"Model name: {driver_info[0]}, Firmware version: {driver_info[-1]} ")
49
50 ## open relay
51 err = await dev.Relay_open_async(port)
52 print(f"Relay_open_async in port {port}, status: {err}")
53
54 ## Read counters
55 counter = await dev.Relay_read_async(port, index)
56 print(f"Relay_read_async in port {port}: {counter}")
57
58 ## Close relay
59 err = await dev.Relay_close_async(port)
60 print(f"Relay_close_async in port {port}, status: {err}")
61 except Exception as err:
62 pywpc.printGenericError(err)
63
64 finally:
65 ## Disconnect device
66 dev.disconnect()
67
68 ## Release device handle
69 dev.close()
70
71
72def main_for_spyder(*args):
73 if asyncio.get_event_loop().is_running():
74 return asyncio.create_task(main(*args)).result()
75 else:
76 return asyncio.run(main(*args))
77
78
79if __name__ == '__main__':
80 asyncio.run(main()) ## Use terminal
81 # await main() ## Use Jupyter or IPython(>=7.0)
82 # main_for_spyder() ## Use Spyder