DIO loopback port

  1'''
  2DIO - DIO_loopback_port.py with asynchronous mode.
  3
  4This example demonstrates the process of DIO loopback using port from WifiDAQE3AOD.
  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) 2022-2025 WPC Systems Ltd. All rights reserved.
 19'''
 20
 21## WPC
 22from wpcsys import pywpc
 23
 24## Python
 25import asyncio
 26import sys
 27sys.path.insert(0, 'src/')
 28
 29
 30async def main():
 31    ## Get Python driver version
 32    print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
 33
 34    ## Create device handle
 35    dev = pywpc.WifiDAQE3AOD()
 36
 37    ## Connect to device
 38    try:
 39        dev.connect("192.168.5.38")  ## Depend on your device
 40    except Exception as err:
 41        pywpc.printGenericError(err)
 42        ## Release device handle
 43        dev.close()
 44        return
 45
 46    try:
 47        ## Parameters setting
 48        DO_port = 0  ## Depend on your device
 49        DI_port = 3
 50        DO_value = [1, 0, 1, 0]
 51
 52        ## Get firmware model & version
 53        driver_info = await dev.Sys_getDriverInfo_async()
 54        print(f"Model name: {driver_info[0]}, 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    finally:
 83        ## Disconnect device
 84        dev.disconnect()
 85
 86        ## Release device handle
 87        dev.close()
 88
 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))
 95
 96
 97if __name__ == '__main__':
 98    asyncio.run(main())  ## Use terminal
 99    # await main()  ## Use Jupyter or IPython(>=7.0)
100    # main_for_spyder()  ## Use Spyder