DIO loopback pins

 1'''
 2DIO - DIO_loopback_pins.py with synchronous mode.
 3
 4This example demonstrates the process of DIO loopback using pins from EthanEXD.
 5It involves using DO pins to send signals and DI pins 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 pins.
 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 pins.
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
25def main():
26    ## Get Python driver version
27    print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
28
29    ## Create device handle
30    dev = pywpc.EthanEXD()
31
32    ## Connect to device
33    try:
34        dev.connect("192.168.1.110")  ## Depend on your device
35    except Exception as err:
36        pywpc.printGenericError(err)
37        ## Release device handle
38        dev.close()
39        return
40
41    try:
42        ## Parameters setting
43        timeout = 3  ## [sec]
44        DO_port = 0  ## Depend on your device
45        DI_port = 2
46        DO_pins = [0, 1, 2, 3]
47        DI_pins = [0, 1, 2, 3]
48        DO_value = [1, 0, 1, 0]
49
50        ## Get firmware model & version
51        driver_info = dev.Sys_getDriverInfo(timeout)
52        print(f"Model name: {driver_info[0]}, Firmware version: {driver_info[-1]} ")
53
54        ## Open pins with digital output
55        err = dev.DO_openPins(DO_port, DO_pins, timeout)
56        print(f"DO_openPins in DO_port {DO_port}, status: {err}")
57
58        ## Write pins to high or low
59        err = dev.DO_writePins(DO_port, DO_pins, DO_value, timeout)
60        print(f"DO_writePins in {DO_port}, status: {err}")
61
62        ## Open pins with digital iutput
63        err = dev.DI_openPins(DI_port, DI_pins, timeout)
64        print(f"DI_openPins in DI_port {DI_port}, status: {err}")
65
66        ## Read pins state
67        state_list = dev.DI_readPins(DI_port, DI_pins, timeout)
68        print(f"state_list in DI_port {DI_port}: {state_list}")
69
70        ## Close pins with digital output
71        err = dev.DO_closePins(DO_port, DO_pins, timeout)
72        print(f"DO_closePins in DO_port {DO_port}, status: {err}")
73
74        ## Close pins with digital input
75        err = dev.DI_closePins(DI_port, DI_pins, timeout)
76        print(f"DI_closePins in DI_port {DI_port}, status: {err}")
77    except Exception as err:
78        pywpc.printGenericError(err)
79
80    finally:
81        ## Disconnect device
82        dev.disconnect()
83
84        ## Release device handle
85        dev.close()
86
87
88if __name__ == '__main__':
89    main()