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  • Case ID: 338180
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in Windows, in NCS v2.9.0, compile error log "UnicodeDecodeError: 'cp950' codec can't decode byte 0xe2 in position 44:"

FrankWang15

Hi, 

    Install NCS SDK v.2.9.0 in MAC by tool manager, compile SDK sample code by VSCode, OK

    However, install NCS SDK v2.9.0 in Windows by tool manager, compile SDK sample code with error: 

   

CMake Error at C:/ncs/v2.9.0/zephyr/cmake/modules/boards.cmake:196 (message):
  Error finding board: nrf52840dk

  Error message: Traceback (most recent call last):

    File "C:\ncs\v2.9.0\zephyr\scripts\list_boards.py", line 469, in <module>
      dump_v2_boards(args)
    File "C:\ncs\v2.9.0\zephyr\scripts\list_boards.py", line 416, in dump_v2_boards
      boards = find_v2_boards(args)
               ^^^^^^^^^^^^^^^^^^^^
    File "C:\ncs\v2.9.0\zephyr\scripts\list_boards.py", line 341, in find_v2_boards
      b, e = load_v2_boards(args.board, board_yml, systems)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "C:\ncs\v2.9.0\zephyr\scripts\list_boards.py", line 230, in load_v2_boards
      b = yaml.load(f.read(), Loader=SafeLoader)
                    ^^^^^^^^

  UnicodeDecodeError: 'cp950' codec can't decode byte 0xe2 in position 44:
  illegal multibyte sequence

However, the NCS v2.8.0 works well in the same windows PC environment.

Could you help to solve the ""UnicodeDecodeError: 'cp950' codec can't decode byte 0xe2 in position 44:" issues,  thanks!

Best Regards

Frank

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  • 0

    Hi, 

    I have the same error, and use the "west boards" command can reproduce the problem. I guess it may just happen in double-byte Windows environment.

    (v2.9.0) C:\ncs\v2.9.0> west boards
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\ncs\toolchains\b620d30767\opt\bin\Scripts\west.exe\__main__.py", line 7, in <module>
  File "C:\ncs\toolchains\b620d30767\opt\bin\Lib\site-packages\west\app\main.py", line 1085, in main
    app.run(argv or sys.argv[1:])
  File "C:\ncs\toolchains\b620d30767\opt\bin\Lib\site-packages\west\app\main.py", line 244, in run
    self.run_command(argv, early_args)
  File "C:\ncs\toolchains\b620d30767\opt\bin\Lib\site-packages\west\app\main.py", line 505, in run_command
    self.run_extension(args.command, argv)
  File "C:\ncs\toolchains\b620d30767\opt\bin\Lib\site-packages\west\app\main.py", line 654, in run_extension
    self.cmd.run(args, unknown, self.topdir, manifest=self.manifest,
  File "C:\ncs\toolchains\b620d30767\opt\bin\Lib\site-packages\west\commands.py", line 194, in run
    self.do_run(args, unknown)
  File "C:\ncs\v2.9.0\zephyr\scripts\west_commands\boards.py", line 100, in do_run
    for board in list_boards.find_v2_boards(args).values():
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\ncs\v2.9.0\zephyr\scripts\list_boards.py", line 341, in find_v2_boards
    b, e = load_v2_boards(args.board, board_yml, systems)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\ncs\v2.9.0\zephyr\scripts\list_boards.py", line 230, in load_v2_boards
    b = yaml.load(f.read(), Loader=SafeLoader)
                  ^^^^^^^^
UnicodeDecodeError: 'cp950' codec can't decode byte 0xe2 in position 44: illegal multibyte sequence

(v2.9.0) C:\ncs\v2.9.0>

  • 0 in reply to Felix Shih

    Hi,

    I try to build NCS v2.9.0 sample in English Win10 virtual machine, it can build successfully, so the root cause is double-byte Win10 environment.

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