DIO loopback port

 1'''
 2DIO - DIO_loopback_port.py with asynchronous mode.
 3
 4This example demonstrates the process of DIO loopback using port from EthanD.
 5It involves using DO port to send signals and DI port to receive signals on a single device, commonly known as "loopback".
 6
 7To begin with, it illustrates the steps required to open the DO and DI port.
 8Next, it performs the operation of writing to a DO pin and reading from a DI pin.
 9Lastly, it concludes by closing the DO and DI port.
10
11-------------------------------------------------------------------------------------
12Please change correct serial number or IP and port number BEFORE you run example code.
13
14For other examples please check:
15    https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
16See README.md file to get detailed usage of this example.
17
18Copyright (c) 2022-2024 WPC Systems Ltd. All rights reserved.
19'''
20
21## Python
22import asyncio
23
24## WPC
25
26from wpcsys import pywpc
27
28
29async def main():
30    ## Get Python driver version
31    print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
32
33    ## Create device handle
34    dev = pywpc.EthanD()
35
36    ## Connect to device
37    try:
38        dev.connect("192.168.1.110") ## Depend on your device
39    except Exception as err:
40        pywpc.printGenericError(err)
41        ## Release device handle
42        dev.close()
43        return
44
45    try:
46        ## Parameters setting
47        DO_port = 0 ## Depend on your device
48        DI_port = 1
49        DO_value = [1, 0, 1, 0]
50
51        ## Get firmware model & version
52        driver_info = await dev.Sys_getDriverInfo_async()
53        print("Model name: " + driver_info[0])
54        print("Firmware version: " + driver_info[-1])
55
56        ## Open DO port with digital output
57        err = await dev.DO_openPort_async(DO_port)
58        print(f"DO_openPort_async in DO_port {DO_port}, status: {err}")
59
60        ## Open DI port with digital input
61        err = await dev.DI_openPort_async(DI_port)
62        print(f"DI_openPort_async in DI_port {DI_port}, status: {err}")
63
64        ## Write DO port to high or low
65        err = await dev.DO_writePort_async(DO_port, DO_value)
66        print(f"DO_writePort_async in DO_port {DO_port}, status: {err}")
67
68        ## Read DI port state
69        state_list = await dev.DI_readPort_async(DI_port)
70        print(f"state_list{state_list}")
71
72        ## Close DO port with digital output
73        err = await dev.DO_closePort_async(DO_port)
74        print(f"DO_closePort_async in DO_port {DO_port}, status: {err}")
75
76        ## Close DI port with digital input
77        err = await dev.DI_closePort_async(DI_port)
78        print(f"DI_closePort_async in DI_port {DI_port}, status: {err}")
79    except Exception as err:
80        pywpc.printGenericError(err)
81
82    ## Disconnect device
83    dev.disconnect()
84
85    ## Release device handle
86    dev.close()
87
88    return
89
90def main_for_spyder(*args):
91    if asyncio.get_event_loop().is_running():
92        return asyncio.create_task(main(*args)).result()
93    else:
94        return asyncio.run(main(*args))
95if __name__ == '__main__':
96    asyncio.run(main()) ## Use terminal
97    # await main() ## Use Jupyter or IPython(>=7.0)
98    # main_for_spyder() ## Use Spyder