1'''
2DPOT - DPOT_writeByChannel.py with asynchronous mode.
3
4This example demonstrates how to write digital potentiometer resistance to the specefic channel from EthanP.
5-------------------------------------------------------------------------------------
6Please change correct serial number or IP and port number BEFORE you run example code.
7
8For other examples please check:
9 https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
10See README.md file to get detailed usage of this example.
11
12Copyright (c) 2022-2024 WPC Systems Ltd. All rights reserved.
13'''
14
15## Python
16import asyncio
17
18## WPC
19
20from wpcsys import pywpc
21
22
23async def main():
24 ## Get Python driver version
25 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
26
27 ## Create device handle
28 dev = pywpc.EthanP()
29
30 ## Connect to device
31 try:
32 dev.connect("192.168.1.110") ## Depend on your device
33 except Exception as err:
34 pywpc.printGenericError(err)
35 ## Release device handle
36 dev.close()
37 return
38
39 try:
40 ## Parameters setting
41 port = 0 ## Depend on your device
42 channel = 0
43 resistance_ratio = 0.5
44
45 ## Get firmware model & version
46 driver_info = await dev.Sys_getDriverInfo_async()
47 print("Model name: " + driver_info[0])
48 print("Firmware version: " + driver_info[-1])
49
50 ## Open DPOT
51 err = await dev.DPOT_open_async(port)
52 print(f"DPOT_open_async in port {port}, status: {err}")
53
54 ## Write on the channel
55 err = await dev.DPOT_writeByChannel_async(port, channel, resistance_ratio)
56 print(f"DPOT_writeByChannel_async in port {port} channel {channel}, status: {err}")
57
58 ## Close DPOT
59 err = await dev.DPOT_close_async(port)
60 print(f"DPOT_close_async in port {port}, status: {err}")
61
62 except Exception as err:
63 pywpc.printGenericError(err)
64
65 ## Disconnect device
66 dev.disconnect()
67
68 ## Release device handle
69 dev.close()
70
71 return
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))
77if __name__ == '__main__':
78 asyncio.run(main()) ## Use terminal
79 # await main() ## Use Jupyter or IPython(>=7.0)
80 # main_for_spyder() ## Use Spyder