1'''
2AIO - AIO_one_channel_loopback.py with asynchronous mode.
3
4This example demonstrates the process of AIO loopback with specific channels of USBDAQF1AOD.
5It involves using AO pins to send signals and AI pins to receive signals on a single device, commonly referred to as "loopback".
6The AI and AO pins are connected using a wire.
7
8Initially, the example demonstrates the steps required to open the AI and AO.
9Next, it reads AI data and displays its corresponding values.
10Following that, it writes digital signals to the AO pins and reads AI on-demand data once again.
11Lastly, it closes the AO and AI ports.
12
13-------------------------------------------------------------------------------------
14Please change correct serial number or IP and port number BEFORE you run example code.
15
16For other examples please check:
17 https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
18See README.md file to get detailed usage of this example.
19
20Copyright (c) 2022-2025 WPC Systems Ltd. All rights reserved.
21'''
22
23## WPC
24from wpcsys import pywpc
25
26## Python
27import asyncio
28import sys
29sys.path.insert(0, 'src/')
30
31
32async def main():
33 ## Get Python driver version
34 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
35
36 ## Create device handle
37 dev = pywpc.USBDAQF1AOD()
38
39 ## Connect to device
40 try:
41 dev.connect("default") ## Depend on your device
42 except Exception as err:
43 pywpc.printGenericError(err)
44 ## Release device handle
45 dev.close()
46 return
47
48 try:
49 ## Parameters setting
50 port = 0 ## Depend on your device
51 ao_value_list = [0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5]
52 channel = 8
53
54 ## Get firmware model & version
55 driver_info = await dev.Sys_getDriverInfo_async()
56 print(f"Model name: {driver_info[0]}, Firmware version: {driver_info[-1]} ")
57
58 ## Open AI
59 err = await dev.AI_open_async(port)
60 print(f"AI_open_async in port {port}, status: {err}")
61
62 ## Set AI channel
63 err = await dev.AI_enableChannel_async(port, channel)
64 print(f"AI_enableChannel_async in port {port}, status: {err}")
65
66 ## Open AO
67 err = await dev.AO_open_async(port)
68 print(f"AO_open_async in port {port}, status: {err}")
69
70 ## Read data acquisition
71 ai_list = await dev.AI_readOnDemand_async(port)
72 print(f"AI data in port {port}: {ai_list}")
73
74 ## Write AO vaule in channel 0
75 err = await dev.AO_writeOneChannel_async(port, 0, ao_value_list[0])
76 print(f"In port {port} channel 0, the AO value is {ao_value_list[0]}, status: {err}")
77
78 ## Write AO vaule in channel 1
79 err = await dev.AO_writeOneChannel_async(port, 1, ao_value_list[1])
80 print(f"In port {port} channel 1, the AO value is {ao_value_list[1]}, status: {err}")
81
82 ## Write AO vaule in channel 2
83 err = await dev.AO_writeOneChannel_async(port, 2, ao_value_list[2])
84 print(f"In port {port} channel 2, the AO value is {ao_value_list[2]}, status: {err}")
85
86 ## Write AO vaule in channel 3
87 err = await dev.AO_writeOneChannel_async(port, 3, ao_value_list[3])
88 print(f"In port {port} channel 3, the AO value is {ao_value_list[3]}, status: {err}")
89
90 ## Read data acquisition
91 ai_list = await dev.AI_readOnDemand_async(port)
92 print(f"AI data in port {port}: {ai_list}")
93
94 ## Close AI
95 err = await dev.AI_close_async(port)
96 print(f"AI_close_async in port {port}, status: {err}")
97
98 ## Close AO
99 err = await dev.AO_close_async(port)
100 print(f"AO_close_async in port {port}, status: {err}")
101 except Exception as err:
102 pywpc.printGenericError(err)
103
104 finally:
105 ## Disconnect device
106 dev.disconnect()
107
108 ## Release device handle
109 dev.close()
110
111
112def main_for_spyder(*args):
113 if asyncio.get_event_loop().is_running():
114 return asyncio.create_task(main(*args)).result()
115 else:
116 return asyncio.run(main(*args))
117
118
119if __name__ == '__main__':
120 asyncio.run(main()) ## Use terminal
121 # await main() ## Use Jupyter or IPython(>=7.0)
122 # main_for_spyder() ## Use Spyder