Ok - now I installed ESP-IDF 5.3.3 -- and used the same example (hpf_hf) that comes with it in the examples folder and it fails as well.

(attached is the compile log)

These are examples compiled as "out of the box" as possible and none of them work.

So something is definitely wrong with the ...

OK - I installed the ESP-IDF (v5.4.1) for CLI building from scratch in a Mint Linux VM using the ESP-IDF instructions.

https://docs.espressif.com/projects/esp-idf/en/stable/esp32/get-started/linux-macos-setup.html

That part's easy -- so then I went to compile the hfp_hf example and it fails the ...

Here are some info about this error message. Did you check these?
https://github.com/espressif/arduino-esp32/issues/6954


This one doesn't help - although I'm also not working with arduino. I'm trying to compile in VScode for a Korvo2.

but regardless, the info isn't helpful.


https ...

Let me check those links and get back to you.

Thanks,

-Ben

After tinkering some more - I've installed v5.3.3 and v5.4.1 of the ESP-IDF.

If I try to compile the more basic bluetooth (using BlueDroid as included) HF example (in the examples lists) and under each version of IDF, none of them compile.

if feels like something is missing from VScode in terms ...

Hi there,

Thanks for the reply.

I'm using IDF 5.2.5 with whatever the VScode plugin "install ESP-ADF" installs. I'm not presented with an option to install variants of the esp-adf. Only the ESP-IDF. Could that be part of the problem?

When I run the idf.py from a VScode terminal shell, the results ...

[SOLUTION]

Somewhere in my reading, I thought somehow that the BlueDroid stack allows for classic_bt functions with the -S3 (BLE only) device. That's not the case. The -S2 is WiFi only.

And with that -- finding that answers all of this.

So. This thread is solved. Hopefully it resolves for ...

And I looked in the source and see SO_REUSEADDR is now included -- so it was just how I was setting up my UDP packet sender.

The last post I searched and saw (from 2019) seemed to imply that SO_REUSEADDR was missing from the http server.

That's no longer the case.

This is in 5.2.x:

/* Enable ...

Hey all,

I have a working serial->UDP application and I recently added an HTTPD server for some user config... and that works too -- EXCEPT....

While the httpd server is running, I'm guessing it set up it's bind with options to NOT use SO_REUSEADDR.

So now, my UDP sending functions get the ...

I have a similar issue I'd like to solve without resorting to ICMP/ping packets.

I wouldn't mind like a 1 or 2 minute timeout.