ESP32 Bluetooth connection with c# and 32feet.net fails

Projects Programming
1

Hello, I cannot establish a Bluetooth connection to the ESP 32. Everything works fine with an Android app, but with Visual Studio and 32feet.net and Windows 11 you get the error message:
ASSERT_WARN(103 23), in lc_task.c at line 8775ASSERT_WARN(103 24), in lc_task.c at line 8775.

So far I haven't found a solution to the problem. All example sketches lead to no result.
Greetings Andreas

2

First, ensure you are using either Classic Bluetooth or Bluetooth BLE consistently; mixing them is not allowed.
The programmer inserted the message you received. It's called an assertion. If you have read access to the code, look in the source file lc_task.c at line 8775 to see what the assert is testing, and that may give you a clue as to what you need to do to fix the error.

3

I googled that and found the following Closed Issue.
https://github.com/espressif/arduino-esp32/issues/5164

4

I also found another user on this forum had the problem and solved the same way the previous post did.
https://forum.arduino.cc/t/esp32-bluetooth-to-win10/1076257

5

I simply did a google of the error message and found 2 pages of hits. I already posted the two most relevant hits above.

6

There is more information, including some other possible work arounds at the github issues page for the esp32 repo
https://github.com/espressif/arduino-esp32/issues/5053

8

First of all, thank you for the quick feedback. I've already looked at all of these work arounds, but unfortunately I can't find a clear solution here either. I have no problem with calssic bluetooth on the arduino side. My Android app works great. Even if the ESP32 is paired with the PC (Windows 11), I cannot get a Bluetooth connection via Visual Studio. This error message always appears.

9

There are news.
I completely reinstalled the Arduino IDE on a Windows 10 system and loaded an example Bluetooth Classic sketch and transferred it to the ESP32. Then a sketch in Visual Studio c# console and the Bluetooth connection could be established. Also on the Windows 11 system. Now I will also test it on the Windows 11 system and then report the result.

10

Update:
A stable Bluetooth connection with the ESP32 now works. After the complete update of the Arduino IDE to 2.3.6 everything works but only with the ESP32 package version 1.04. With the current version 3.3.0 no Bluetooth connection is possible!!