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) 2022-2024 WPC Systems Ltd. All rights reserved.
21'''
22
23## Python
24import asyncio
25
26## WPC
27
28from wpcsys import pywpc
29
30
31async def main():
32 ## Get Python driver version
33 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
34
35 ## Create device handle
36 dev = pywpc.USBDAQF1AOD()
37
38 ## Connect to device
39 try:
40 dev.connect("default") ## Depend on your device
41 except Exception as err:
42 pywpc.printGenericError(err)
43 ## Release device handle
44 dev.close()
45 return
46
47 try:
48 ## Parameters setting
49 port = 0 ## Depend on your device
50 ao_value_list = [0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5]
51 channel = 8
52
53 ## Get firmware model & version
54 driver_info = await dev.Sys_getDriverInfo_async()
55 print("Model name: " + driver_info[0])
56 print("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 ## Disconnect device
105 dev.disconnect()
106
107 ## Release device handle
108 dev.close()
109
110 return
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))
117if __name__ == '__main__':
118 asyncio.run(main()) ## Use terminal
119 # await main() ## Use Jupyter or IPython(>=7.0)
120 # main_for_spyder() ## Use Spyder