1'''
2SD - SD_write.py with asynchronous mode.
3
4This example demonstrates how to read a message from SD card from WifiDAQE3AH.
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) 2022-2025 WPC Systems Ltd. All rights reserved.
14'''
15
16## WPC
17from wpcsys import pywpc
18
19## Python
20import asyncio
21import sys
22sys.path.insert(0, 'src/')
23
24
25async def main():
26 ## Get Python driver version
27 print(f'{pywpc.PKG_FULL_NAME} - Version {pywpc.__version__}')
28
29 ## Create device handle
30 dev = pywpc.WifiDAQE3AH()
31
32 ## Connect to device
33 try:
34 dev.connect("192.168.5.38") ## 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 filename = "WPC_test.txt"
44 read_bytes = 15
45 mode = 1 ## 0 : write, 1 : read
46
47 ## Get firmware model & version
48 driver_info = await dev.Sys_getDriverInfo_async()
49 print(f"Model name: {driver_info[0]}, Firmware version: {driver_info[-1]} ")
50
51 ## Open file in sdcard
52 err = await dev.SD_openFile_async(filename, mode)
53 print(f"SD_openFile_async, status: {err}")
54
55 ## Get sdcard storage
56 storage = await dev.SD_getStorage_async()
57 print(f"SD_getStorage_async: {storage}")
58
59 ## Read data form sdcard
60 read_data = await dev.SD_readFile_async(read_bytes)
61 print(f"SD_readFile_async, data: {read_data}")
62
63 ## Close file in sdcard
64 err = await dev.SD_closeFile_async()
65 print(f"SD_closeFile_async, status: {err}")
66 except Exception as err:
67 pywpc.printGenericError(err)
68
69 finally:
70 ## Disconnect device
71 dev.disconnect()
72
73 ## Release device handle
74 dev.close()
75
76
77def main_for_spyder(*args):
78 if asyncio.get_event_loop().is_running():
79 return asyncio.create_task(main(*args)).result()
80 else:
81 return asyncio.run(main(*args))
82
83
84if __name__ == '__main__':
85 asyncio.run(main()) ## Use terminal
86 # await main() ## Use Jupyter or IPython(>=7.0)
87 # main_for_spyder() ## Use Spyder