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 time
17
18## WPC
19
20from wpcsys import pywpc
21
22def main():
23 ## Get Python driver version
24 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
25
26 ## Create device handle
27 dev = pywpc.EthanP()
28
29 ## Connect to device
30 try:
31 dev.connect("192.168.1.110") ## Depend on your device
32 except Exception as err:
33 pywpc.printGenericError(err)
34 ## Release device handle
35 dev.close()
36 return
37
38 try:
39 ## Parameters setting
40 port = 0 ## Depend on your device
41 channel = 0
42 resistance_ratio = 0.5
43 timeout = 3 ## second
44
45 ## Get firmware model & version
46 driver_info = dev.Sys_getDriverInfo(timeout)
47 print("Model name: " + driver_info[0])
48 print("Firmware version: " + driver_info[-1])
49
50 ## Open DPOT
51 err = dev.DPOT_open(port, timeout)
52 print(f"DPOT_open in port {port}, status: {err}")
53
54 ## Write on the channel
55 err = dev.DPOT_writeByChannel(port, channel, resistance_ratio, timeout)
56 print(f"DPOT_writeByChannel in port {port} channel {channel}, status: {err}")
57
58 ## Close DPOT
59 err = dev.DPOT_close(port, timeout)
60 print(f"DPOT_close in port {port}, status: {err}")
61 except Exception as err:
62 pywpc.printGenericError(err)
63
64 ## Disconnect device
65 dev.disconnect()
66
67 ## Release device handle
68 dev.close()
69
70 return
71
72if __name__ == '__main__':
73 main()