Relay set channel

 1'''
 2Relay - Relay_set_channel.py with asynchronous mode.
 3
 4This example demonstrates how to write channel from EthanL.
 5
 6-------------------------------------------------------------------------------------
 7Please change correct serial number or IP and port number BEFORE you run example code.
 8
 9For other examples please check:
10    https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
11See README.md file to get detailed usage of this example.
12
13Copyright (c) 2022-2024 WPC Systems Ltd. All rights reserved.
14'''
15
16## Python
17import asyncio
18
19## WPC
20
21from wpcsys import pywpc
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.EthanL()
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        DO_port = 0
43
44        ## Get firmware model & version
45        driver_info = await dev.Sys_getDriverInfo_async()
46        print("Model name: " + driver_info[0])
47        print("Firmware version: " + driver_info[-1])
48
49        ## Open relay
50        err = await dev.Relay_open_async(port)
51        print(f"Relay_open_async in port {port}, status: {err}")
52
53        ## Toggle digital state for 10 times. Each times delay for 0.5 second
54        for i in range(10):
55            if i%2 == 0:
56                value = [0, 0, 0, 0, 0, 0]
57            else:
58                value = [1, 1, 1, 1, 1, 1]
59
60            await dev.DO_writePort_async(DO_port, value)
61            print(f'Port: {DO_port}, digital state= {value}')
62
63            ## Wait
64            await asyncio.sleep(0.5)  ## delay [s]
65
66        ## Close relay
67        err = await dev.Relay_close_async(port)
68        print(f"Relay_close_async in port {port}, status: {err}")
69    except Exception as err:
70        pywpc.printGenericError(err)
71
72    ## Disconnect device
73    dev.disconnect()
74
75    ## Release device handle
76    dev.close()
77
78    return
79
80def main_for_spyder(*args):
81    if asyncio.get_event_loop().is_running():
82        return asyncio.create_task(main(*args)).result()
83    else:
84        return asyncio.run(main(*args))
85
86if __name__ == '__main__':
87    asyncio.run(main()) ## Use terminal
88    # await main() ## Use Jupyter or IPython(>=7.0)
89    # main_for_spyder() ## Use Spyder