1'''
2AIO - AIO_one_channel_loopback.py with synchronous mode.
3
4This example demonstrates the process of AIO loopback with specific channels of STEM.
5It involves using AO pins to send signals and AI pins to receive signals on a single device, commonly referred to as "loopback".
6The AI and AO pins are connected using a wire.
7
8Initially, the example demonstrates the steps required to open the AI and AO.
9Next, it reads AI data and displays its corresponding values.
10Following that, it writes digital signals to the AO pins and reads AI on-demand data once again.
11Lastly, it closes the AO and AI ports.
12
13If your product is "STEM", please invoke the function `Sys_setAIOMode` and `AI_enableCS`.
14Example: AI_enableCS is {0, 2}
15Subsequently, the returned value of AI_readOnDemand and AI_readStreaming will be displayed as follows.
16data:
17 CH0, CH1, CH2, CH3, CH4, CH5, CH6, CH7, CH0, CH1, CH2, CH3, CH4, CH5, CH6, CH7
18 | | |
19 |---------------- CS0-----------------|---------------- CS2------------------|
20[sample0]
21[sample1]
22 .
23 .
24 .
25[sampleN]
26
27-------------------------------------------------------------------------------------
28Please change correct serial number or IP and port number BEFORE you run example code.
29
30For other examples please check:
31 https://github.com/WPC-Systems-Ltd/WPC_Python_driver_release/tree/main/examples
32See README.md file to get detailed usage of this example.
33
34Copyright (c) 2022-2024 WPC Systems Ltd. All rights reserved.
35'''
36
37## Python
38import time
39
40## WPC
41
42from wpcsys import pywpc
43
44
45def main():
46 ## Get Python driver version
47 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
48
49 ## Create device handle
50 dev = pywpc.STEM()
51
52 ## Connect to device
53 try:
54 dev.connect("192.168.1.110") ## Depend on your device
55 except Exception as err:
56 pywpc.printGenericError(err)
57 ## Release device handle
58 dev.close()
59 return
60
61 try:
62 ## Parameters setting
63 slot = 1 ## Connect AIO module to slot
64 chip_select = [0]
65 ao_value_list = [0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5]
66 timeout = 3 ## second
67
68 ## Get firmware model & version
69 driver_info = dev.Sys_getDriverInfo(timeout)
70 print("Model name: " + driver_info[0])
71 print("Firmware version: " + driver_info[-1])
72
73 ## Get slot mode
74 slot_mode = dev.Sys_getMode(slot, timeout)
75 print("Slot mode:", slot_mode)
76
77 ## If the slot mode is not set to "AIO", set the slot mode to "AIO"
78 if slot_mode != "AIO":
79 err = dev.Sys_setAIOMode(slot, timeout)
80 print(f"Sys_setAIOMode in slot {slot}, status: {err}")
81
82 ## Get slot mode
83 slot_mode = dev.Sys_getMode(slot, timeout)
84 print("Slot mode:", slot_mode)
85
86 ## Open AI
87 err = dev.AI_open(slot, timeout)
88 print(f"AI_open in slot {slot}, status: {err}")
89
90 ## Enable CS
91 err = dev.AI_enableCS(slot, chip_select, timeout)
92 print(f"AI_enableCS in slot {slot}, status: {err}")
93
94 ## Open AO
95 err = dev.AO_open(slot, timeout)
96 print(f"AO_open in slot {slot}, status: {err}")
97
98 ## Read data acquisition
99 ai_list = dev.AI_readOnDemand(slot, timeout)
100 print(f"AI data in slot {slot}: {ai_list}")
101
102 ## Write AO vaule in channel 0
103 err = dev.AO_writeOneChannel(slot, 0, ao_value_list[0], timeout)
104 print(f"In slot {slot} channel 0, the AO value is {ao_value_list[0]}, status: {err}")
105
106 ## Write AO vaule in channel 1
107 err = dev.AO_writeOneChannel(slot, 1, ao_value_list[1], timeout)
108 print(f"In slot {slot} channel 1, the AO value is {ao_value_list[1]}, status: {err}")
109
110 ## Write AO vaule in channel 2
111 err = dev.AO_writeOneChannel(slot, 2, ao_value_list[2], timeout)
112 print(f"In slot {slot} channel 2, the AO value is {ao_value_list[2]}, status: {err}")
113
114 ## Write AO vaule in channel 3
115 err = dev.AO_writeOneChannel(slot, 3, ao_value_list[3], timeout)
116 print(f"In slot {slot} channel 3, the AO value is {ao_value_list[3]}, status: {err}")
117
118 ## Read data acquisition
119 ai_list = dev.AI_readOnDemand(slot, timeout)
120 print(f"AI data in slot {slot}: {ai_list}")
121
122 ## Close AI
123 err = dev.AI_close(slot, timeout)
124 print(f"AI_close in slot {slot}, status: {err}")
125
126 ## Close AO
127 err = dev.AO_close(slot, timeout)
128 print(f"AO_close in slot {slot}, status: {err}")
129 except Exception as err:
130 pywpc.printGenericError(err)
131
132 ## Disconnect device
133 dev.disconnect()
134
135 ## Release device handle
136 dev.close()
137
138 return
139
140if __name__ == '__main__':
141 main()