1'''
2DIO - DO_write_pins.py with asynchronous mode.
3
4This example illustrates the process of writing a high or low signal to a DO pin from USBDAQF1AD.
5
6To begin with, it demonstrates the steps required to open the DO pin.
7Next, voltage output is written to the DO pin.
8Lastly, it concludes by closing the DO pin.
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.USBDAQF1AD()
35
36 ## Connect to device
37 try:
38 dev.connect("default") ## 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 pin_index = [0, 1, 2, 3]
49 DO_value = [1, 0, 1, 0]
50
51 ## Get firmware model & version
52 driver_info = await dev.Sys_getDriverInfo_async()
53 print(f"Model name: {driver_info[0]}, Firmware version: {driver_info[-1]} ")
54
55 ## Open pins with digital output
56 err = await dev.DO_openPins_async(port, pin_index)
57 print(f"DO_openPins_async in port {port}, status: {err}")
58
59 ## Write pins to high or low
60 err = await dev.DO_writePins_async(port, pin_index, DO_value)
61 print(f"DO_writePins_async in port {port}, status: {err}")
62
63 ## Wait for seconds to see led status
64 await asyncio.sleep(3) ## delay [sec]
65
66 ## Close pins with digital output
67 err = await dev.DO_closePins_async(port, pin_index)
68 print(f"DO_closePins_async in port {port}, status: {err}")
69
70 except Exception as err:
71 pywpc.printGenericError(err)
72
73 finally:
74 ## Disconnect device
75 dev.disconnect()
76
77 ## Release device handle
78 dev.close()
79
80
81def main_for_spyder(*args):
82 if asyncio.get_event_loop().is_running():
83 return asyncio.create_task(main(*args)).result()
84 else:
85 return asyncio.run(main(*args))
86
87
88if __name__ == '__main__':
89 asyncio.run(main()) ## Use terminal
90 # await main() ## Use Jupyter or IPython(>=7.0)
91 # main_for_spyder() ## Use Spyder