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NordicSemiconductor / pc-ble-driver-py

Python bindings for the ble-driver library
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pc_ble_driver_py DLL missing #115

Closed konovagit closed 5 years ago

konovagit commented 5 years ago

I'm having an issue running the examples provided within the pc_ble_driver_py repository.

When I try running an example, say, advertising.py, I get the following error: ImportError: DLL load failed

I followed the instructions Installing from PyPl specified in https://github.com/NordicSemiconductor/pc-ble-driver-py .

The DLL being loaded is loaded in pc_ble_driver_py/lib/nrf_ble_driver_sd_api_v5.py, line 13: from . import _nrf_ble_driver_sd_api_v5

Version 0.12.0 on Windows 10 Pro Ref but no response: https://devzone.nordicsemi.com/f/nordic-q-a/48489/pc_ble_driver_py-dll-missing

kenr commented 5 years ago

Can you provide the first line printed after starting python REPL? For example:

c:\>python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
konovagit commented 5 years ago

Thank you for your reply.

My python settings :

C:\Users\konova>python3
Python 3.7.2 (tags/v3.7.2:9a3ffc0492, Dec 23 2018, 23:09:28) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
marknolan commented 5 years ago

Same issue for me (as posted here: https://devzone.nordicsemi.com/f/nordic-q-a/47957/pc-ble-python-py-v0-12-0). We got it working on a second PC in the office for the same project so there is no conflict with other libraries.

My python REPL is: Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32

konovagit commented 5 years ago

Response of Michael Portmann from Nordic dev zone:

I found the same problem today.

I used Dependency Walker to examine the DLL provided with the pc-ble-driver-py package for 0.12.0, I think the supplied DLLs have missing dependencies that may be included with Visual Studio (Debug build?)

The change notes for pc-ble-driver-py 0.12.0 mention use of the latest driver 4.1.1, if you go there pc-ble-driver 4.1.1 you can download it and those DLL files do not have the same dependencies, at least on my machine.

I replaced pc_ble_driver_py.lib.nrf-ble-driver-sd_api_v5-mt-gd-4_1_1.dll with a copy of nrf-ble-driver-sd_api_v5-mt-4_1_1.dll and now my installation works.

Works for me !

Suhail-Ahamed commented 5 years ago

By replacing that also I still facing the same issue! Did you faced it initially and figured out anything later thus it working now?

jupe commented 5 years ago

I replaced pc_ble_driver_py.lib.nrf-ble-driver-sd_api_v5-mt-gd-4_1_1.dll with a copy of nrf-ble-driver-sd_api_v5-mt-4_1_1.dll and now my installation works.

That helps for me also. Very annoying bug. Please provide correct dll files for windows, otherwise this causes a lot of headache !

jupe commented 5 years ago

seems that v0.13.0 fixes most of issues with older version, including this one.