@roland:

What is the IDF version you are using?

I am using:"v3.3-beta1-136-g97eecfa1b".

I fixed a similar issue in https://github.com/espressif/esp-idf/co ... 8d36bfb1c9. Does this fix your issue?

I need to check if this also helps for me.

Now I switched to the CMake build system under Windows cmd.exe. This works tremendously fast! But I still have the problem, that I am not able to quit monitor mode by hitting "Ctrl-]". But in windows cmd.exe I have the option to exit the running script (idf.py) just by hitting "Ctrl+c". This is not ...

ah, o.k. Sorry for the misunderstanding.
But I am really having a problem with this right now: even starting the terminal mode (make monitor) takes sometimes several minutes until I see the first output on my screen.

@mikemoy: The option -jx I know already. This was not the question.
My question is that I am not able to quit the monitor mode (incoked by 'make monitor') using "Ctrl+]" key. This keystroke is simply ignored by WSL.

In the online documentation of the ESP32 I found a warning concerning the use of the SPI interface as slave: Warning: Due to a design peculiarity in the ESP32, if the amount of bytes sent by the master or the length of the transmission queues in the slave driver, in bytes, is not both larger than ei...

Since compilation in windows was too slow I also installed the Windows Subsystem for Linux (WSL). This works really fast. Thank you for the hint so far. But I am having a problem: when I invoke the terminal via "make monitor" I can not exit the terminal using the key "Ctrl+]". How can I accomplish t...

nice answer from ESP_Angus - but why there is no https_mbedtls server example? If mbedtls is the library to prefer I would expect that there are more and better examples...

thank you for your fast answer.
yes, I will be using FAT filesystem with the in esp-idf provided C library. The webpages of course will only be read; so, a simultaneous read of the same file from two different tasks needs to be possible. I guess your answer gives green light for this approach, right?

I am trying to implement a webserver which serves the webpages stored on an SD card. It also should be able to serve more than one simultaneous connection. For this the esp-idf driver for the SD card needs to be reentrant. Is this the case?

Now I saw that there is a bt_spp_acceptor and bt_spp_initiator example available. This seems to be the "missing" BT-classic SPP profile. Has anybody tested it?