1'''
2DIO - DO_write_port.py with asynchronous mode.
3
4This example illustrates the process of writing a high or low signal to a DO port from EthanD.
5
6To begin with, it demonstrates the steps required to open the DO port.
7Next, voltage output is written to the DO port.
8Lastly, it concludes by closing the DO port.
9
10-------------------------------------------------------------------------------------
11Please change correct serial number or IP and port number BEFORE you run example code.
12
13For other examples please check:
14 https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
15See README.md file to get detailed usage of this example.
16
17Copyright (c) 2022-2025 WPC Systems Ltd. All rights reserved.
18'''
19
20## WPC
21from wpcsys import pywpc
22
23## Python
24import asyncio
25import sys
26sys.path.insert(0, 'src/')
27
28
29async def main():
30 ## Get Python driver version
31 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
32
33 ## Create device handle
34 dev = pywpc.EthanD()
35
36 ## Connect to device
37 try:
38 dev.connect("192.168.1.110") ## Depend on your device
39 except Exception as err:
40 pywpc.printGenericError(err)
41 ## Release device handle
42 dev.close()
43 return
44
45 try:
46 ## Parameters setting
47 port = 0 ## Depend on your device
48 DO_value = [1, 0, 1, 0]
49
50 ## Get firmware model & version
51 driver_info = await dev.Sys_getDriverInfo_async()
52 print(f"Model name: {driver_info[0]}, Firmware version: {driver_info[-1]} ")
53
54 ## Open port with digital output
55 err = await dev.DO_openPort_async(port)
56 print(f"DO_openPort_async in port {port}, status: {err}")
57
58 ## Write port to high or low
59 err = await dev.DO_writePort_async(port, DO_value)
60 print(f"DO_writePort_async in port {port}, status: {err}")
61
62 ## Wait for seconds to see led status
63 await asyncio.sleep(3) ## delay [sec]
64
65 ## Close port with digital output
66 err = await dev.DO_closePort_async(port)
67 print(f"DO_closePort_async in port {port}, status: {err}")
68 except Exception as err:
69 pywpc.printGenericError(err)
70
71 finally:
72 ## Disconnect device
73 dev.disconnect()
74
75 ## Release device handle
76 dev.close()
77
78
79def main_for_spyder(*args):
80 if asyncio.get_event_loop().is_running():
81 return asyncio.create_task(main(*args)).result()
82 else:
83 return asyncio.run(main(*args))
84
85
86if __name__ == '__main__':
87 asyncio.run(main()) ## Use terminal
88 # await main() ## Use Jupyter or IPython(>=7.0)
89 # main_for_spyder() ## Use Spyder