Cannot connect Bluetooth HF-AG SLC while SPP channel is open (IDFGH-12964)

DirkMeintjiesCtrack commented 4 weeks ago

Answers checklist.

[X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
[X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
[X] I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

5.2.1

Espressif SoC revision.

ESP32 Rev01

Operating System used.

Windows

How did you build your project?

Eclipse IDE

If you are using Windows, please specify command line type.

PowerShell

Development Kit.

Custom board

Power Supply used.

External 3.3V

What is the expected behavior?

When calling esp_hf_ag_slc_connect() while having active SPP connection then HF_AG callback with ESP_HF_CONNECTION_STATE_EVT and state ESP_HF_CONNECTION_STATE_SLC_CONNECTED should occur.

What is the actual behavior?

When calling esp_hf_ag_slc_connect() while SPP channel is connected I get HF_AG callback with ESP_HF_CONNECTION_STATE_EVT and connection state ESP_HF_CONNECTION_STATE_DISCONNECTED instead of ESP_HF_CONNECTION_STATE_SLC_CONNECTED.

FIY: When calling esp_hf_ag_slc_connect() without having active SPP connection then HF_AG callback with ESP_HF_CONNECTION_STATE_EVT and state ESP_HF_CONNECTION_STATE_SLC_CONNECTED occurs successfully.

Steps to reproduce.

Init both SPP server and HF_AG module after Bluedroid init completes.
Open an incoming SPP connection
Call esp_hf_ag_slc_connect() to establish connection to HF_AG device.

Debug Logs.

No response

More Information.

No response

DirkMeintjiesCtrack commented 3 weeks ago

Can I bump this issue back to the top?

ESP-YTGerd commented 1 week ago

Hi @DirkMeintjiesCtrack Sorry for the late reply. I combined our IDF HF-AG and SPP-acceptor/initiator examples and ran them together. The AG module acts as an SPP server, maintaining an SPP connection while connecting to HF. The logs show that the HF-AG connection was successfully established.

DirkMeintjiesCtrack commented 1 week ago

MMM, that is strange. When I close all my SPP connections, even though the SPP server is still running, then I can connect to HF kit successfully, but not while a SPP connection is active.

Once the HF kit connection is established I can reconnect the SPP connections successfully.

Did you test this on 5.2.1?

Could it be a (out of) memory related issue?

ESP-YTGerd commented 1 week ago

MMM, that is strange. When I close all my SPP connections, even though the SPP server is still running, then I can connect to HF kit successfully, but not while a SPP connection is active.

Once the HF kit connection is established I can reconnect the SPP connections successfully.

Did you test this on 5.2.1?

Could it be a (out of) memory related issue?

Yes, It works for me on both release/v5.2.1 and master. Currently, we support Max 8 RFCOMM connections, so it shouldn't be related to insufficient memory. Maybe can provide some detailed logs to help us with debugging?

DirkMeintjiesCtrack commented 1 week ago

I will try to capture some logs, thank you.

espressif / esp-idf